法国专利FR3021730A1 LIGHTING UNIT AND LAMP FOR VEHICLE

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专利摘要:
A lighting unit (10, 110, 210, 310, 410, 510, 610, 710, 810) comprises a transparent substrate (20, 320, 420, 520, 820), a light source (12, 312, 412). , 512, 812A, 812B), a first half-mirror (32, 132, 232, 332, 432, 532, 632, 832) and a mirror (34, 134, 234, 334, 434, 534, 734, 834) . The light source (12, 312, 412, 512, 812A, 812B) is mounted on the transparent substrate (20, 320, 420, 520, 820). The first half-mirror (32, 132, 232, 332, 432, 532, 632, 832) is disposed on the front side of the transparent substrate (20, 320, 420, 520, 820). The mirror (34, 134, 234, 334, 434, 534, 734, 834) is disposed rearwardly of the transparent substrate (20, 320, 420, 520, 820). The light emitted by the light source (12, 312, 412, 512, 812A, 812B) is reflected repeatedly between the first half-mirror (32, 132, 232, 332, 432, 532, 632, 832) and the mirror (34, 134, 234, 334, 434, 534, 734, 834), while being transmitted through the transparent substrate (20, 320, 420, 520, 820), so as to be output to the before from the first half mirror (32, 132, 232, 332, 432, 532, 632, 832).
公开号:FR3021730A1
申请号:FR1555030
申请日:2015-06-03
公开日:2015-12-04
发明作者:Ken Watanabe；Hiromi Nakamura
申请人:Koito Manufacturing Co Ltd；
IPC主号:

专利说明:

[0001] BACKGROUND 1. Field Embodiments of the invention are directed to a lighting unit in which a light source is mounted on a transparent substrate and a vehicle lamp provided with a light source. 'lighting. 2. Associated technique JP 2013-214492 A for example describes a vehicle lamp having a configuration such that a light source is mounted on a transparent substrate.
[0002] In a vehicle lamp disclosed in a third exemplary embodiment of JP 2013-214492 A, the transparent substrate is disposed in a lamp chamber defined by a transparent cover and a lamp body. The inner surface of the lamp body is configured to be a reflective surface. With this configuration, light that is emitted by the light source to be directed backward is reflected by the reflective surface of the lamp body to be directed forward. In addition, a portion of the reflected light is reflected back from the transparent substrate towards the rear, so that the light is then reflected back to be directed forward by the reflecting surface of the lamp body. In the vehicle lamp described in JP 2013-214492 A, the light emitted by the light source is reflected several times (multiple reflection) between the transparent substrate and the reflective surface of the lamp body, thereby improving the appearance of the lamp when the lamp is on. However, in the vehicle lamp which uses the multiple reflection technique such as this, further improvement of the appearance of the vehicle lamp when the lamp is on is desired.
[0003] Another improvement in the appearance of a lamp of a general lighting unit when the lamp is on is also desired, as is the lamp for a vehicle. EXECUTIVE SUMMARY Exemplary embodiments of the invention have been made taking into account the above circumstances and provide (i) a lighting unit including a light source mounted on a transparent substrate and capable of improving its appearance when the lighting unit is on and (ii) a vehicle lamp including the lighting unit.
[0004] In an exemplary embodiment, a half-mirror and a mirror that is arranged to have a predetermined positional relationship are provided to provide the lighting unit and the vehicle lamp described above. (1) According to an exemplary embodiment, a lighting unit comprises a transparent substrate, a light source, a first half-mirror and a mirror. The light source is mounted on the transparent substrate. The first half mirror is disposed on the front side of the transparent substrate. The mirror is disposed on the back side of the transparent substrate. The light emitted by the light source is reflected repeatedly between the first half-mirror and the mirror, while being transmitted through the transparent substrate, so as to be outputted forward from the first half mirror. The application of the "lighting unit" is not particularly limited, since the lighting unit is configured so that the light source is mounted on the transparent substrate. The configuration of the "transparent substrate" is not particularly limited, since the substrate has transparency with respect to light. For example, a transparent or opaque wiring pattern may be formed on a surface of a transparent substrate or within a transparent substrate. The type of "light source" is not particularly limited, since the light source is mounted on the transparent substrate. Examples of a "light source" include a light emitting diode and an organic EL element. The number of light sources may be greater than or equal to one.
[0005] 3 0 2 1 73 0 3 Insofar as the "first half-mirror" and the "mirror" are arranged to have a positional relationship such that the light emitted by the light source can be reflected repeatedly between the "first half-mirror" and the "mirror", while the light is transmitted through the transparent substrate, the positional relationship between the first half-mirror, the mirror and the transparent substrate is not particularly limited. As shown in the configuration described above, the lighting unit according to (1) is configured as follows. That is, the first half mirror is disposed on the front side of the transparent substrate on which the light source is mounted. The mirror is disposed on the back side of the transparent substrate. On the other hand, the light emitted by the light source is reflected repeatedly between the first half-mirror and the mirror, while being transmitted through the transparent substrate, so as to be outputted forwards. since the first half mirror. Accordingly, the following advantageous effects can be obtained. That is, when the illuminated lighting unit is viewed from the outside, the light that is reflected many times between the first half-mirror and the mirror brings an image of the light source 20 to appear as if a number of light images of light sources were aligned in the front-back direction. As a result, the appearance of the lighting unit, in which the light source is mounted on the transparent substrate, when it is turned on can be improved.
[0006] Moreover, by adopting this configuration, when the lighting unit which is not lit is observed from the outside, the transparent substrate and the light source mounted on it are hidden behind the first half-mirror so as to be invisible from the outside. Thus, the appearance of the lighting unit can be further improved, not only when the lighting unit is on, but also when it is not turned on. (2) The lighting unit according to (1) may further include a first transparent element. The first transparent element is disposed between the transparent substrate and the first half-mirror. The first transparent member is disposed so that a first surface of the first transparent member is in contact with the transparent substrate and a second surface of the first transparent member is in contact with the first half mirror. (3) The lighting unit according to (1) may further include a second transparent element. The second transparent element is disposed between the transparent substrate and the mirror. The second transparent element is arranged so that a first surface of the second transparent element is in contact with the transparent substrate and a second surface of the second transparent element is in contact with the mirror. (4) The lighting unit according to (1) may further include a first transparent element and a second transparent element. The first transparent element is disposed between the transparent substrate and the first half-mirror. The second transparent element is disposed between the transparent substrate and the mirror. The first transparent element is arranged so that a first surface of the first transparent element is in contact with the transparent substrate and a second surface of the first transparent element is in contact with the first half mirror. The second transparent element is arranged so that a first surface of the second transparent element is in contact with the transparent substrate and a second surface of the second transparent element is in contact with the mirror. With the configurations according to (2) to (4), the distance between the transparent substrate and the first half-mirror and / or the distance between the transparent substrate and the mirror can be easily kept constant. When this occurs, it is also possible to form the first half-mirror and / or mirror by applying a metal deposit to the second surface of the transparent member. (5) The illumination unit according to any of (2) to (4) may further include a second half-mirror which is disposed between the transparent substrate and the mirror.
[0007] With this configuration, when the lighting unit which is lit is observed from the outside, (i) the light which is reflected several times between the first half-mirror and the mirror and (ii) the light which is reflected several times between the first half mirror and the second half mirror bring an image of the light source to appear as if a number of light images of light sources were aligned in the front-to-back direction. (6) In the lighting unit according to (5), the transparent substrate, the first half mirror and the second half mirror may extend along a predetermined curved surface. The end portions of the transparent substrate, the end portions of the first half mirror and the end portions of the second half mirror may be attached to the mirror. With this configuration, the light that is reflected several times between the first half mirror and the second half mirror causes an image of the light source to appear as if a number of light images of light sources were aligned in a mirror image. Which direction is at right angles to the predetermined curved surface. On the other hand, the mirror causes the image of the light source to appear as if the brightness of the number of light images of the light sources increases several times. (7) According to another exemplary embodiment, a vehicle lamp comprises the lighting unit according to any one of (1) to (6), a transparent cover and a lamp body. The transparent cover and the lamp body define a lamp chamber. The lamp chamber contains the lighting unit. The transparent substrate and the first half mirror extend along the transparent cover.
[0008] When the lighting unit which is not lit is observed from the outside, the first half-mirror which is arranged on the front side of the transparent substrate allows the interior of the lamp chamber to be invisible from the light. 'outside. When this occurs, it is also possible to form the first half-mirror by applying a metal deposit to the inner surface of the transparent cover. The type of "vehicle lamp" is not particularly limited. For example, the vehicle lamp may be a traffic light such as a tail light, a brake light, a direction light, a clearance light and the like. In a variant, the vehicle lamp may be a lamp which is different from the signal lamps and which is intended to be a lamp which is dedicated to a function making it possible to warn neighboring vehicles and the like. In addition, alternatively, the vehicle lamp may be a lamp for decorative purposes. (8) According to another exemplary embodiment, a lighting unit comprises a transparent substrate, a light source, a half-mirror and a mirror. The light source is mounted on a transparent substrate. The half-mirror is disposed on the rear side of the transparent substrate. The mirror is arranged on the back side of the half-mirror. When the lighting unit which is lit is observed from the outside, the light which is reflected on the half-mirror and the light which is reflected several times between the half-mirror and the mirror brings an image of the source. of light to appear as if a number of bright images of light sources were aligned in the front-back direction. Accordingly, when this configuration is adopted, the appearance of the lighting unit that is turned on is improved. In addition, depending on the configuration of the transparent substrate on which the light source is mounted, the light source can be made hardly visible when the lighting unit which is not lit is observed from the outside. Thus, by adopting this configuration, the appearance of the lighting unit can be improved not only when the lighting unit is on, but also when the lighting unit is not turned on. (9) The lighting unit according to (8) may further include a first transparent element and a second transparent element. The first transparent element is disposed between the transparent substrate and the half-mirror. The second transparent element is disposed between the half-mirror and the mirror. With this configuration, the distance between the transparent substrate and the half-mirror and the distance between the half-mirror and the mirror can be easily kept constant. (10) In the lighting unit according to any one of (8) to (9), the transparent substrate, the half-mirror and the mirror may extend along a curved surface which is convex towards the front side of the lighting unit. With this configuration, the image of the light source is made to appear as if a number of light images of light sources were aligned in radial directions. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be well understood and its advantages will be better understood on reading the following detailed description. The description refers to the drawings shown below, which are given by way of example. Fig. 1 is a perspective view showing a lighting unit according to a first exemplary embodiment; Figure 2 is a sectional side view of the illumination unit through the line II-II of Figure 1; Fig. 3 is a sectional view showing in detail a portion indicated by III in Fig. 2; Figure 4 is a view similar to Figure 1 and shows how the lighting unit operates in the first exemplary embodiment; Fig. 5 is a view similar to Fig. 2 and showing a lighting unit of a first exemplary modification of the first exemplary embodiment; Fig. 6 is a view similar to Fig. 2 and showing a lighting unit of a second exemplary modification of the first exemplary embodiment; Fig. 7 is a view similar to Fig. 3 and shows a lighting unit of a third exemplary modification of the first exemplary embodiment; Fig. 8 is a perspective view showing a lighting unit according to a second exemplary embodiment of the patent application; Fig. 9 is a view similar to Fig. 8 and shows how the lighting unit of the second exemplary embodiment operates; Fig. 10 is a sectional side view showing a vehicle lamp including a lighting unit according to a third exemplary embodiment of the invention; Fig. 11 is a view similar to Fig. 10 and shows a vehicle lamp of a first exemplary modification of the third exemplary embodiment; Fig. 12 is a view similar to Fig. 10 and shows a vehicle lamp of a second exemplary modification of the third exemplary embodiment; Fig. 13 is a sectional side view showing a vehicle lamp including a lighting unit according to a fourth exemplary embodiment of the invention; Fig. 14A is a front view showing the lighting unit 5 according to the fourth exemplary embodiment; Fig. 14B is a front view showing how the lighting unit of the fourth exemplary embodiment operates; Fig. 15 is a perspective view showing a lighting unit according to a fifth exemplary embodiment of the invention; Figure 16 is a detailed sectional view through line XVI-XVI of Figure 15; and Fig. 17 is a view similar to Fig. 15 and showing the operation of the lighting unit of the fifth exemplary embodiment. DETAILED DESCRIPTION Examples of embodiments of the invention will be described below in detail with reference to the accompanying drawings. Figure 1 is a perspective view showing a lighting unit 10 according to a first exemplary embodiment of the invention. Fig. 2 is a sectional side view showing the illumination unit 10 through the line II-II of Fig. 1.
[0009] As shown in FIGS. 1 and 2, the lighting unit 10 according to the first exemplary embodiment comprises a transparent substrate 20, a plurality of light sources 12, a first half mirror 32 and a mirror 34. The transparent substrate 20 is arranged to extend along a vertical plane. The light sources of the plurality of light sources 12 are mounted on the transparent substrate 20 so as to be arranged in grid-like form, vertically and horizontally. The first half-mirror 32 is disposed on the front side of the transparent substrate 20. The mirror 34 is disposed on the rear side of the transparent substrate 20.
[0010] Figure 3 is a detailed view of a portion indicated by III in Figure 2.
[0011] As shown in FIG. 2, the lighting unit 10 is configured so that the light emitted by the light sources 12 is outputted forwards from the first half mirror 32, while being reflected. repeatedly between the first half-mirror 32 and the mirror 34. A specific configuration of this lighting unit 10 will then be described. In this transparent substrate 20, a wiring pattern 26 is disposed between first and second transparent films 22, 24, which are made of a transparent resin (eg PET). The wiring pattern 26 is formed on the front surface of the second transparent film 24 which is located on the back side of the transparent substrate 20. The wiring pattern 26 is formed by cutting a portion of an opaque conductive film having a meshed shape. The first and second transparent films 22, 24 are attached to each other via a transparent adhesive 28. A tab 20a is formed at the central portion of the upper end of the transparent substrate 20 so as to project upward. The wiring pattern 26 is exposed in the position where the tab 20a is provided. An end portion 20b is mounted on the wiring pattern 26. Each light source 12 is comprised of light-emitting diodes that emit red light and have a light-emitting chip having light-emitting surfaces on both its front surfaces. and back. The light sources 12 are attached to the wiring pattern 26 so as to establish electrical communication with each other while being arranged between the first and second transparent films 22, 24. The first half-mirror 32 and the mirror 34 are arranged so as to extend along the vertical plane and located at an equal distance from the transparent substrate 20. The first half-mirror 32 is a film made of a transparent resin (eg PET). A metal deposition process or the like is applied to the rear surface of the first half mirror 32 so that the rear surface of the first half mirror 32 serves as a half-mirror surface 32a. On the other hand, the mirror 34 is also a film made of a transparent resin (eg PET). A metal deposition process or the like is applied to the front surface of the mirror 34 so that the front surface of the mirror 34 serves as a mirror surface 34a. A transparent member 42 is disposed between the transparent substrate 20 and the first half-mirror 32. The transparent member 42 is a plate-like member made of a transparent resin (eg PET) and has a constant thickness. The transparent element 42 is arranged so that its rear surface is in contact with the transparent substrate 20 and its front surface is in contact with the first half-mirror 32. The transparent element 42 is thus fixed to the transparent substrate 20 and to the first half-mirror 32. On the other hand, a transparent element 44 is disposed between the transparent substrate 20 and the mirror 34. The light-transmitting element 44 is a plate-shaped element made of a transparent resin ( for example PET) and has a constant thickness.
[0012] The transparent element 44 is arranged so that its front surface is in contact with the transparent substrate 20 and its rear surface is in contact with the mirror 34. The transparent element 44 is thus fixed to the transparent element 20 and to the transparent element 20. mirror 34. The transparent substrate 20 has a frame 50. The frame 50 is disposed along the outer circumferential edge portions of the first half-mirror 32, the mirror 34, and the transparent members 42, 44, so as to surround the first half-mirror 32 half-mirror 32, mirror 34 and transparent elements 42, 44. Frame 50 has a first frame portion 52 and a second frame portion 54. The second frame portion 54 supports the transparent substrate 20 and the like since its back side. The tab 20a of the transparent substrate 20 passes through the second frame part 54 in its upper part. On the other hand, the first frame portion 52 is attached to the second frame portion 54 in a state in which the first frame portion 52 supports the transparent substrate 20 from its front portion. Fig. 4 is a perspective view showing a state in which the light sources 12 are lit. As shown in FIG. 4, when the lighting unit 10 which is lit is viewed from the outside, the light which is reflected several times between the first half-mirror 32 and the mirror 34 brings an image I of the a light source to appear as if a number of light images of light sources were aligned in the forward-to-back direction at a plurality of locations. On the other hand, as shown in FIG. 1, when the lighting unit 10 which is not lit is observed from the outside, since the external light is reflected by the first half mirror 32, the substrate transparent 20 and the light sources 12 are almost invisible. A description will then be given of how the lighting unit 10 of the first exemplary embodiment operates.
[0013] As has been described in detail so far, the lighting unit 10 according to the first exemplary embodiment is configured so that the first half-mirror 32 is disposed on the front side of the transparent substrate 20 on which are mounted the light sources of the plurality of light sources 12, while the mirror 34 is disposed rearwardly of the transparent substrate 20. As a result, the light emitted by the light sources 12 is emitted forward from the first half mirror 32 while being reflected repeatedly between the first half-mirror 32 and the mirror 34 so as to be transmitted through the transparent substrate 20. The following advantageous effects can thus be obtained.
[0014] That is, when the lighting unit 10 which is lit is observed from the outside, the light which is reflected several times between the first half-mirror 32 and the mirror 34 brings the image I of the light source to appear as if a number of light images of light sources were aligned in the front-back direction. On the other hand, when the lighting unit 10 which is not lit is observed from the outside, the transparent substrate 20 and the light sources 12 mounted on the transparent substrate 20 can be hidden behind the first half. -mirror 32 so as to be invisible from the outside. According to the first exemplary embodiment, the appearance of the lighting unit 10 in which the light sources of the plurality of light sources 12 are mounted on the transparent substrate 20 can be improved not only when the lighting unit 10 is on, but also when the lighting unit 10 is not lit. In the first exemplary embodiment, the transparent member 42 is disposed between the transparent substrate 20 and the first half-mirror 32 so that (i) the back surface (example of the first half-mirror) of the transparent element 42 is in contact with the transparent substrate 20 and (ii) the front surface (example of the second surface) of the transparent element 42 is in contact with the first half-mirror 32. As a result, the distance between the transparent substrate 20 and the first half-mirror 32 can be kept constant. On the other hand, the transparent element 44 is disposed between the transparent substrate 20 and the mirror 34 so that (i) the front surface (example of the first surface) of the transparent element 44 is in contact with the transparent substrate 20 and (ii) the back surface (example of a second surface) of the transparent member 44 is in contact with the mirror 34. Accordingly, the distance between the transparent substrate 20 and the mirror 34 can be kept constant. This allows the image I of each light source 12 to appear as if a number of light images of light sources were precisely aligned at constant intervals in the front-to-back direction. In the first exemplary embodiment, it is assumed that the light sources of the plurality of light sources 12 are arranged in grid-like form, vertically and horizontally. However, any other configuration may be adopted in place of that described above. On the other hand, in the first exemplary embodiment, it is assumed that the wiring pattern 26 of the transparent substrate 20 is formed by cutting off the portion of the opaque conductive film having a meshed shape. However, any other configuration may be adopted in place of that described above. For example, the wiring pattern 26 of the transparent substrate 20 may be a transparent conductive film (for example ITO (indium tin oxide)). In addition, in the first exemplary embodiment, it is assumed that the light sources 12 are the light emitting chips each having the light-emitting surfaces on both their front and back surfaces. Alternatively, the light sources 12 may be light emitting chips each having a light-emitting surface only on one or both of their front surface or rear surface thereof.
[0015] Examples of modifications of the first exemplary embodiment will next be described.
[0016] First, a first exemplary modification of the first exemplary embodiment will be described. Figure 5 is a view similar to Figure 2 and shows a lighting unit 110 according to the first modification example.
[0017] As shown in FIG. 5, the basic configuration of this modification example is similar to that of the first exemplary embodiment. However, in this modification example, a first half mirror 132 is formed on the front surface of a transparent member 42 by applying a metal deposition process or the like, and a mirror 134 is formed on the back surface of a transparent element 44 by applying to it a metal deposition process or the like. In combination with this configuration, the shape of the frame 150 differs from that of the first exemplary embodiment. With the configuration of this modification example, the lighting unit 110 can be made simple and the thickness of the lighting unit 110 can be made thin. A second example of modification of the first exemplary embodiment will then be described. Figure 6 is a view similar to Figure 2 and shows a lighting unit 210 of this modification example. As shown in Fig. 6, the basic configuration of this modification example is similar to that of the first exemplary embodiment. However, in this modification example, a second half-mirror 236 is disposed between a transparent substrate 20 and a mirror 234. That is, in this modification example, the mirror 234 is disposed in a position which is spaced rearwardly with respect to a transparent member 44. A metal deposition process or the like is applied to the front surface of the mirror 234 so that the front surface of the mirror 234 serves as the mirror surface 234a. On the other hand, the second half-mirror 236 is formed by applying a metal deposition process or the like on the rear surface of the transparent member 44. An annular spacer 260 is disposed between the transparent member 44 and the mirror 234. In combination with the adoption of this configuration, the shape of the frame 250 differs partially from that of the first modification example.
[0018] By adopting the configuration of this modification example, when the lighting unit 210 which is lit is observed from the outside, (i) the light which is reflected several times between the first half-mirror 232 and the mirror 234 and (ii) the light reflected several times between the first half-mirror 232 and the second half-mirror 236 cause an image I of the light source to appear as if a larger number of light images of light sources were aligned in the front-to-back direction. A third exemplary modification of the first exemplary embodiment will next be described. Figure 7 is a view similar to Figure 3 and shows the main part of the lighting unit 310 according to this modification example. As shown in Fig. 7, the basic configuration of this modification example is similar to that of the first exemplary embodiment. However, in this modification example, a transparent substrate 320 and a plurality of light sources 312 have a different configuration than the first exemplary embodiment. On the other hand, in this modification example, a first half-mirror 332 is formed by applying a metal deposition process or the like on the back surface of a transparent member 342 and a mirror 334 is formed by applying a process of metal deposit or the like on the back surface of a transparent member 344. The transparent substrate 320 is configured to form a wiring pattern 324 on the front surface of a substrate main body 322 made of a transparent resin ( for example PET). On the other hand, track portions (e.g. flats) 326 are formed at a plurality of positions on the wiring pattern 324. The light sources of the plurality of light sources 312 are mounted on the front surface of the transparent substrate. 320 in a form resembling a grid, vertically and horizontally. The respective light sources 312 are then fixed in the positions where the beach portions 326 are formed so as to be in electrical communication with the beach portions 326.
[0019] These light sources 312 are light-emitting diodes that emit red light. A ceramic case containing each light emitting chip is filled with a luminescent material. A surface of the luminescent material constitutes a light emitting surface 312a. The transparent element 342 is a plate-like element made of a transparent resin (eg PET) and has a constant thickness. The transparent element 342 is arranged to be separated by a constant distance from the transparent substrate 320. In addition, the transparent element 344 is also a plate-like element made of a transparent resin (eg PET) and has a constant thickness. The main substrate body 322 of the transparent substrate 320 is then affixed to the front surface of the transparent element 344. The light emitted by the respective light sources 312 constitutes light which travels forward from its light-emitting surface. light 312a and a portion of the light passes through the transparent member 342 to be directed forward, while the remaining portion of the light is reflected by the first half-mirror 332 which is formed on the back surface of the element The reflected light then passes through the main substrate body 322 of the transparent substrate 320 and the transparent element 344 is reflected by the mirror 334 which is formed on the back surface of the transparent member 344 to be emitted to forward from the main substrate body 332 and reaches the transparent element 342 again. That is, in this modification example, when the unit 25 illumination 310 which is lit is observed from the outside, the light which is reflected several times between the first half-mirror 332 and the mirror 334 causes an image I of each light source 312 to appear as if a number of bright light source images were aligned in the front-to-back direction. On the other hand, when the lighting unit 310 which is not lit is observed from the outside, the transparent substrate 320 and the plurality of light sources 312 which are mounted on it can be made invisible. thanks to the presence of the first half-mirror 332. A second exemplary embodiment of the invention will next be described.
[0020] Figure 8 is a perspective view showing a lighting unit 410 according to the second exemplary embodiment. As shown in FIG. 8, the lighting unit 410 according to the second exemplary embodiment is configured as follows. That is, a transparent substrate 420 is an elongated half-cylinder. A light transmitting member 442 is disposed on the outer circumferential surface side of the transparent substrate 420. A transparent member 444 is disposed on the inner circumferential surface side of the transparent substrate 420.
[0021] The configurations of the transparent substrate 420 and a plurality of light sources 412 which are mounted thereon are similar to those of the first exemplary embodiment. The transparent elements 442, 444 are both plate-shaped elements made of a transparent resin (eg PET) and are formed into a half-cylinder having a constant thickness. The transparent member 442 is attached to the transparent substrate 420. Specifically, the inner circumferential surface of the transparent member 442 is attached to the transparent substrate 420. On the other hand, the transparent member 444 is attached to the transparent substrate 420. Specifically, the outer circumferential surface of the transparent member 444 is attached to the transparent substrate 420. A metal deposition process or the like is applied to the outer circumferential surface of the transparent member 442 to form a first half. On the other hand, a metal deposition process or the like is applied to the inner circumferential surface of the transparent member 444, so as to form a second half-mirror 436. The transparent substrate 420 and the transparent elements 442, 444 are attached to a mirror 434 at their two end positions in relation to the direction in which tend the transparent substrate 420 and the transparent members 442, 444 (that is to say, wherein the half cylinders extend). The mirror 434 is shaped in a flat shape. A mirror surface 434 facing the transparent substrate 420 is configured to serve as a mirror surface 434a. Flange portions 434b are formed on both side end portions of the mirror 434. The transparent substrate 420 and the transparent members 442, 444 are positioned by the pair of flange portions 434b. A tab 420a of the transparent substrate 420 passes through an insertion hole (not shown) formed in the mirror 434.
[0022] Fig. 9 is a perspective view showing the lighting unit 410 in a state in which the light sources 412 are lit. As shown in Fig. 9, when the illumination unit 410 which is lit is observed from the outside, the light which is reflected several times between the first half mirror 432 brings an image I of each light source 412. to appear as if a number of light images of light sources were aligned radially at a plurality of locations. On the other hand, these images I illuminate the mirror surface 434a and can be observed.
[0023] On the other hand, as shown in FIG. 8, when the lighting unit 410 which is not lit is observed from the outside, since the external light is reflected on the first half-mirror 432, the substrate 420 transparent and 412 light sources are almost invisible.
[0024] By adopting the configuration of the second exemplary embodiment, the light that is reflected several times between the first half-mirror 432 and the second half-mirror 436 causes the images I of the light sources 412 to appear as if a number Bright images of light sources were aligned in a direction that is at right angles to the cylindrical surface. In addition, the mirror 434 causes the images I of the light sources 412 to appear as if the brightness of the number of images I of the light sources 412 increases several times. In this second exemplary embodiment, it is assumed that the transparent substrate 420 is an elongated half-cylinder. Alternatively, the transparent substrate 420 may be any other elongated curved surface. On the other hand, in this second exemplary embodiment, it is assumed that the mirror surface 434a of the mirror 434 is shaped in a flat shape. Alternatively, the mirror surface 434a may have a curved surface shape.
[0025] A third exemplary embodiment of the invention will next be described. Fig. 10 is a sectional side view showing a vehicle lamp 500 according to the third exemplary embodiment.
[0026] As shown in FIG. 10, the vehicle lamp 500 is a lamp such as a rear light, for example. The vehicle lamp 500 is configured so that a lamp chamber defined by a transparent cover 502 and a lamp body 504 contains a lighting unit 510.
[0027] The transparent cover 502 has a vertical sectional shape that extends along a curve of arc-like shape. The illumination unit 510 has a vertical sectional shape in which a transparent substrate 520 extends along the transparent cover 502 so as to have a shape resembling an arc. A transparent member 542 is disposed on the side of the outer circumferential surface of the transparent substrate 520. On the other hand, a transparent member 544 is disposed on the side of the inner circumferential surface of the transparent substrate 520.
[0028] The configurations of the transparent substrate 520 and a plurality of light sources 512 which are mounted thereto are similar to those of the first exemplary embodiment. The transparent elements 542, 544 are both plate-shaped elements made of transparent resin (eg PET), have a constant thickness and have an arc-shaped section. The transparent member 542 is attached to the transparent substrate 520. Specifically, the inner circumferential surface of the transparent member 542 is attached to the transparent substrate 520. On the other hand, the transparent member 544 is attached to the transparent substrate 520. Specifically, the outer circumferential surface of the transparent member 544 is attached to the transparent substrate 520. A metal deposition process or the like is applied to the outer circumferential surface of the transparent member 542 to form a first half. On the other hand, a metal deposition process or the like is applied to the inner circumferential surface of the transparent member 544, so as to form a mirror 534.
[0029] The transparent substrate 520 and the transparent elements 542, 544 are attached to the lamp body 504 at their two end portions in a direction in which the arcuate sectional shapes of the transparent substrate 520 extend and the transparent elements 542, 544. The lamp body 504 comprises a lamp body main member 504A and a cover 504B. The cover 504B is attached to the lamp body main member 504A so as to cover a tab 520a of the transparent substrate 520. By adopting the configuration of the third exemplary embodiment, when the lighting unit 510 which is The light which is illuminated from the outside through the transparent cover 502, is reflected several times between the first half-mirror 532 and the mirror 534 causing an image I of each light source 512 to appear as if a number of Bright images of light source images were aligned in radial directions. On the other hand, when the lighting unit 510 which is not lit is observed from the outside through the transparent cover 502, since the external light is reflected on the first half-mirror 532, the transparent substrate 520 and the light sources 512 are almost invisible. Examples of modifications of the third exemplary embodiment will next be described. First, a first exemplary modification of the third exemplary embodiment will be described.
[0030] Fig. 11 is a view similar to Fig. 10 and shows a vehicle lamp 600 according to this exemplary embodiment. As shown in Fig. 11, the basic configuration of this modification example is similar to that of the third exemplary embodiment. However, this modification is different from the third exemplary embodiment in that an element corresponding to the transparent element 542 of the third exemplary embodiment is not provided and that a metal deposition process or analogous is applied to the inner surface of a transparent cover 602, so as to form a first half-mirror 632.
[0031] In combination with this difference, the configuration of a lamp body 302 is partially different from that of the third exemplary embodiment. By adopting the configuration of this modification example, when the lighting unit 610 which is lit is observed from the outside through the transparent cover 602, the light which is reflected several times between the first half-mirror 632 and a mirror 534 causes an image I of each light source 512 to appear as if a number of light images of light source images were aligned in radial directions.
[0032] On the other hand, when the lighting unit 610 which is not lit is observed from the outside through the transparent cover 602, since the external light is reflected on the first half-mirror 632, a transmitting substrate 520 light and 512 light sources are almost invisible.
[0033] On the other hand, by adopting the configuration of this modification example, the configuration of the vehicle lamp 600 can be simplified and the vehicle lamp 600 can be made thin. A second example of modification of the third exemplary embodiment will then be described.
[0034] Fig. 12 is a view similar to Fig. 10 and shows a vehicle lamp 700 according to this modification example. As shown in Fig. 12, the basic configuration of this modification example is similar to that of the third exemplary embodiment. However, this modification example is different from the third exemplary embodiment in that an element corresponding to the transparent element 544 of the third exemplary embodiment is not provided and in that a lamp body 704 provides the function of the mirror 534 of the third exemplary embodiment. That is, the lamp body 704 of this modification example is configured so that a lamp body main member 704A extends to have an arc-like shape along the length of the lamp body 704A. a transparent substrate 520 in a vertical plane with a constant distance from the transparent substrate. A metal deposition process or the like is applied to the inner surface of the lamp body main member 704A to form a mirror 734.
[0035] By adopting the configuration of this modification example, when the lighting unit 710 which is lit is observed from the outside through the transparent cover 502, the light which is reflected several times between a first half Mirror 532 and mirror 734 causes an image of each light source 512 to appear as if a number of light images of light source images were aligned in radial directions. On the other hand, when the lighting unit 710 which is not lit is observed from the outside through the transparent cover 502, since the external light is reflected on the first half-mirror 532, a transmitting substrate 520 light and 512 light sources are almost invisible. On the other hand, by adopting the configuration of this modification example, the configuration of the vehicle lamp 700 can be simplified and the vehicle lamp 700 can be thinned. A fourth exemplary embodiment of the invention will then be described. Fig. 13 is a side sectional view showing a vehicle lamp 800 according to the fourth exemplary embodiment.
[0036] As shown in Fig. 13, the vehicle lamp 800 is a lamp such as a rear light, for example. The vehicle lamp 800 is configured so that a lamp chamber defined by a transparent cover 802 and a lamp body 804 contains a lighting unit 810.
[0037] The illumination unit 810 comprises a transparent substrate 820, a plurality of light sources 812A, 812B, a transparent element 840 and a pair of upper and lower transparent elements 842. The transparent substrate 820 is arranged in such a way that extend along a vertical plane. The light sources 812A, 812B are mounted on the transparent substrate 820. The transparent element 840 is disposed on the front side of the transparent substrate 820. The elements of the pair of upper and lower transparent elements 842 are arranged in the vicinity of the transparent substrate. 820. The lighting unit 810 has a vertically symmetrical shape.
[0038] Similar to the transparent substrate 20 of the first exemplary embodiment, the transparent substrate 820 is configured so that a wiring pattern is disposed between first and second transparent films 822, 824. The FIG. 14A is a front view showing the lighting unit 810.
[0039] As shown in Fig. 14A, the light sources of the plurality of light sources 812A are arranged at relatively short intervals in the right-left direction in the central vertical portion of the transparent substrate 820. The light sources of the plurality of Light sources 812B are disposed in positions that are vertically spaced from the vertical center portion. On the other hand, the light sources 812B are arranged in the right-left direction at intervals which are longer than those in which the light sources of the plurality of light sources 812A are arranged. Light sources 812A, 812B are light-emitting diodes that emit red light and consist of light-emitting chips each having light emitting surfaces on both their front and back surfaces. The light sources 812A, 812B are attached to the wiring pattern so as to be in electrical connection therewith. The light sources 812A, 812B are disposed between the first and second transparent films 822, 824. A tab 820a is formed at the side end portion of the transparent substrate 820 so as to project to the side. An end portion 820b of the wiring pattern is mounted on this tab 820a. As shown in Fig. 13, the transparent member 840 has a vertical plate portion 840A and a horizontal plate portion 840B. The vertical plate portion 840A extends in the vertical direction along the front surface of the transparent substrate 820. The horizontal plate portion 840B extends forwardly from a vertically central portion of the portion. in the form of a vertical plate 840A. The vertical plate-shaped portion 840A is attached to the transparent substrate 820. Specifically, the rear surface of the vertical plate-shaped portion 840A is attached to the transparent substrate 820.
[0040] The horizontal plate-shaped portion 840B is formed such that the width in the vertical direction decreases progressively. The front end surface 840Ba of the horizontal plate portion 840B extends in the right-left direction to form an elongate thin strip. A light scattering member such as a boss is applied to the front end surface 840Ba. Each of the transparent elements 842 is a triangular element that extends in the right-left direction along the vertical plate portion 840A and the horizontal plate portion 840B of the transparent member 840. The surfaces lower and the rear surfaces of the transparent element 842 are in contact with the transparent element 840. The front surface of one of the transparent elements 842 extends obliquely upwards and backwards relative to the position of the transparent element 842. the front end surface 840Ba of the horizontal plate portion 840B to an upper end portion of the vertical plate portion 840A. The front surface of the other transparent elements 842 extends obliquely downward and rearward from the position of the front end surface 840Ba of the horizontal plate portion 840B to the portion of lower end of the vertical plate portion 2040A. A metal deposition process or the like is applied to the front surface of each transparent member 842 to form a first half mirror 832. A portion of the transparent cover 802 which is located in front of the horizontal plate portion 840B of the transparent member 840 extends in the right-left direction to form an elongate thin strip. The other portions of the transparent cover 802 on the upper and lower sides of the transparent cover portion 802 extend rearwardly while being inclined obliquely upwardly and downwardly obliquely. The transparent cover 802 abuts with the transparent substrate 820 at the upper and lower end portions of the transparent cover 802 while positioning the vertical plate portion 840A of the transparent member 840. The lamp body 804 is spaced rearward to some extent with respect to the transparent substrate 820 at a vertically central portion of the lamp body 804. A portion of the lamp body 804 extends forwardly and obliquely upward from its vertically central portion towards an upper end portion of the lamp body 804. Another portion of the lamp body 804 extends forwardly and obliquely downward toward a lower end portion of the lamp body 804. The lamp body 804 supports the transparent cover 802 in a state in which the upper and lower end portions of the lamp body 804 and the transparent cover 80 2 sandwich the transparent substrate 820 together. A metal deposition process or the like is applied to a pair of upper and lower inclined surfaces which are located away from the transparent substrate 820 and which constitute portions of the inner surface of the lamp body 804. A mirror 834 is thus formed. As shown in Fig. 13, the light emitted forwards by the light sources 802 is mainly guided toward the front end surface 840Ba while being reflected internally by total reflection on both the upper and lower surfaces. bottom of the horizontal plate portion 840B of the transparent member 840 repeatedly and is outputted forward from the front end surface 840Ba as scattered light.
[0041] On the other hand, the light emitted backwards by the light sources 812A is reflected on the mirror 834 and is then outputted forwards through the transparent substrate 820 and the transparent elements 840, 842. When this occurs, a portion of the light is internally reflected on the first half-mirror 832.
[0042] On the other hand, the light emitted forwards by the light sources 812B is outputted forwards through the transparent substrate 820 and the transparent elements 840, 842. When this happens, some light is reflected internally on the first half-mirror 832.
[0043] In addition, the light emitted backwards by the light sources 812B is reflected on the mirror 834 and is then outputted forwards through the transparent substrate 820 and the transparent elements 840, 842. When this occurs, some of the light is reflected internally on the first half-mirror 832.
[0044] Fig. 14B is a front view of the lighting unit 810 in a state in which the light sources 812A, 812B are lit.
[0045] As shown in FIG. 14B, when the lighting unit 810 that is lit is viewed from the outside, the front end surface 840Ba of the horizontal plate portion 840B of the transparent member 840 appears In a uniformly luminous illumination, elements of the pair of upper and lower transparent elements 842 appear to illuminate in the manner of an interval spot in the right-left direction at a plurality of positions and the entire surface of the transparent elements 842. seems to light up weakly. When this occurs, the reason why the front end surface 840Ba of the horizontal plate-shaped tab 840B seems to illuminate in a uniformly bright manner is that the sources of the large number of light sources 812A are arranged in the right direction and that most of the light emitted forwards by the light sources 812A is guided to the horizontal plate shaped portion 840B to be outputted forward from the end surface before 840Ba (example of light scattering surface). On the other hand, the reason why the elements of the pair of upper and lower transparent elements 842 seem to illuminate at the plurality of their positions in the manner of an interval spot in the right-left direction is that the light emitted forwards by the light sources 812B is outputted forward from the front surfaces of the transparent elements 842. The front surfaces of the transparent elements 842 are configured to serve as the first half-mirror 832 The amount of light emitted is reduced to such an extent that light is reflected internally. As a result, the brightness in the respective positions is less than the brightness at the front end surface 840Ba of the horizontal plate portion 840B.
[0046] In addition, the reason that all the surfaces of the elements of the pair of upper and lower transparent elements 842 seem to faintly illuminate is that the light emitted backwards by the light sources 812A, 812B is reflected on the mirror 834. and is then outputted forwards through the transparent substrate 820 and transparent elements 840, 842 and the light emitted forwards or backwards by the light sources 812A, 812B is reflected On the inside of the first half-mirrors 832, it is then repeatedly reflected in different parts such as the mirror 834 and is then outputted forwards from the front surfaces of the transparent elements 842.
[0047] Even in the case where the configuration of the fourth exemplary embodiment is adopted, when the lighting unit 810 which is turned on is observed from the outside through the transparent cover 802, the light including the light which is reflected several times between the first half-mirrors 832 and the mirror 834 causes all the surfaces of the elements of the pair of upper and lower transparent elements 842 to appear to illuminate weakly. In addition, the front end surface 804Ba of the horizontal plate portion 840B of the transparent member 840 appears to illuminate uniformly brightly and the elements of the upper and lower transparent pair of elements 842 appear to illuminate in the plurality of positions in the manner of an interval spot in the right-left direction. On the other hand, when the lighting unit 810 which is not lit is observed from the outside through the transparent cover 802, since the external light is reflected on the first half-mirrors 832, the transparent substrate 820 and 812B light sources are almost invisible. On the other hand, since the front end surface 840Ba of the horizontal plate portion 840B is configured to serve as a light scattering surface, the light sources 812A are almost invisible.
[0048] A fifth exemplary embodiment of the invention will next be described. Fig. 15 is a perspective view showing a lighting unit 910 according to the fifth exemplary embodiment of the invention.
[0049] As shown in Fig. 15, the illumination unit 910 according to the fifth exemplary embodiment is configured as follows in a manner similar to the illumination unit 410 of the second exemplary embodiment. That is, a transparent substrate 920 is an elongated half-cylinder. A transparent member 944 and disposed on the inner circumferential surface side of the transparent substrate 920. However, the fourth exemplary embodiment is different from the second exemplary embodiment in that a transparent member is not provided on the outer circumferential surface side of the transparent substrate 920 and in that a transparent member 946 is further disposed on the inner circumferential surface side of the transparent member 944.
[0050] FIG. 16 is a detail sectional view through line XVI-XVI of FIG. 15. As shown in FIG. 16, the transparent substrate 920 is configured such that a wiring pattern 926 is disposed between the first and second transparent films 922, 924 which are made of transparent resin. The wiring pattern 926 is formed on an outer circumferential surface of the second transparent film 924 which is located on the back side of the transparent substrate 920. The wiring pattern 926 is formed by cutting a portion of a transparent conductive film having a mesh shape. The first and second transparent films 922, 924 are affixed to each other via a transparent adhesive 928. Each light source 912 is a light emitting diode which emits red light and which has a lowercase A light emitting chip having a light emitting surface on both its front and back surfaces. The light sources 912 are attached to the wiring pattern 926 so as to be in electrical communication with the wiring pattern 926 while being interposed between the first and second transparent films 922, 924. The transparent elements 944, 946 are Plate-shaped elements made of a transparent resin (eg PET) are semi-cylindrical and have a constant thickness. The transparent element 944 is fixed to the transparent substrate 920. Specifically, the outer circumferential surface of the transparent element 944 is fixed to the transparent substrate 920. The transparent element 946 is attached to the transparent element 944. Specifically the outer circumferential surface of the transparent member 946 is attached to the transparent member 944. A metal deposition process or the like is applied to an inner circumferential surface of the transparent member 944 so as to form a half-mirror 936. On the other hand, a metal deposition process or the like is applied to an inner circumferential surface of the transparent member 946 so as to form a mirror 934.
[0051] As shown in FIG. 15, the transparent substrate 920 and the transparent elements 944, 946 are attached to a support 960 at their two end portions in relation to the direction in which the half portions extend. and cylinders 920 transparent substrate and transparent elements 944, 946. The support 960 has a shape resembling a flat plate. Flange portions 960b are formed at the two lateral end portions of the support 960. The transparent substrate 920 and the transparent members 944, 946 are positioned by the pair of flange portions 960b. A tab 920a of the transparent substrate 920 is inserted through an insertion hole (not shown) which is formed in the holder 960. As shown in FIG. 16, the light emitted by the light sources 912 towards the outer circumferential side is outputted to outer circumferential space as such. On the other hand, the light emitted by the light sources 912 towards the inner circumferential side reaches the half-mirror 936 which constitutes the inner circumferential surface of the transparent element 944, so that a part of the light is reflected on the half-mirror 936 to be outputted to the space of the outer circumferential side through the transparent substrate 920, while the remaining light reaches the mirror 934 which constitutes the inner circumferential surface of the transparent member 946 such as what. The light that is reflected on the mirror 934 is then partially reflected on the half-mirror 936, while the remaining light is output to the outer circumferential-side space through the transparent substrate 920. FIG. 17 is a perspective view showing the lighting unit 910 in which the light sources 912 are lit. As shown in Fig. 17, when the lighting unit 910 which is turned on is viewed from the outside, the light which is emitted directly from the light sources 912 to the outer circumferential side brings an image of each source. of light 912 to appear illuminate in a luminous way. On the other hand, the light which is reflected several times between the half-mirror 936 and the mirror 934 causes the image of each light source 912 to appear as if a number of light source images Ib were illuminating. several 302 1 7 30 29 positions. Accordingly, the image of each light source 912 is made to appear as if the image 1a and the number of images Ib were aligned in radial directions in a series positional relationship.
[0052] On the other hand, as shown in Fig. 15, when the lighting unit 910 which is not lit is observed from the outside, although the transparent substrate 920 is directly visible, since the wiring pattern 926 is formed by cutting a portion of the conductive transparent film having the meshed form and the light sources 912 are made of tiny light emitting chips, the presence of the transparent substrate 920 is barely visible. In the case where the configuration of the fifth exemplary embodiment is adopted, when the illumination unit 910 which is lit is observed from the outside, the light which is emitted directly by the light sources 912 to the side outer circumferential causes the image 1a of each light source 912 to appear to illuminate brightly. On the other hand, the light which is reflected several times between the half-mirror 936 and the mirror 934 causes the image of each light source 912 to appear as if the number of light images Ib illuminate in the different positions. Accordingly, the image of each light source 912 is made to appear as if the image 1a and the number of images Ib were aligned in radial directions in a series positional relationship. It thus becomes possible to further improve the appearance of the lighting unit 910 when the lighting unit 910 is turned on. Moreover, in the fifth exemplary embodiment, when the lighting unit 910 which is not lit is observed from the outside, the presence of the light wiring pattern 926 and the light sources 912 of the substrate transparent 920 is barely visible. Thus, the appearance of the lighting unit 910 can be improved not only when the lighting unit 910 is turned on but also when the lighting unit 910 is not turned on. On the other hand, in the fifth exemplary embodiment, the transparent element 944 (example of first transparent element) is disposed between the transparent substrate 920 and the half-mirror 936. The transparent element 946 (example of second transparent element) is disposed between the half-mirror 936 and the mirror 934. Accordingly, the distance between the transparent substrate 920 and the half-mirror 936 and the distance between the half-mirror 936 and the mirror 934 can be easily kept constant.
[0053] Further, in the fifth exemplary embodiment, the transparent substrate 920, the half-mirror 936 and the mirror 934 are formed to extend along the curved surface which is convex forward. Accordingly, the image of each light source 912 is caused to appear as if the light image 1a and the number of light images Ib were aligned in radial directions. Note that the numerical values and parameters of the above exemplary embodiments and their exemplary modifications are presented only as examples. These numerical numbers and parameters can of course be set to different values as needed. In addition, the invention is not limited to the configurations described in the exemplary embodiments and their modification examples. Thus, other configurations can be obtained by modifying the exemplary embodiments and their modification examples.

权利要求:
Claims (10)
[0001]
REVENDICATIONS1. A lighting unit (10, 110, 210, 310, 410, 510, 610, 710, 810) characterized in that it comprises: a transparent substrate (20, 320, 420, 520, 820); a light source (12, 312, 412, 512, 812A, 812B) which is mounted on the transparent substrate (20, 320, 420, 520, 820); a first half-mirror (32, 132, 232, 332, 432, 532, 632, 832) which is disposed on the front side of the transparent substrate (20, 320, 420, 520, 820, 920); and a mirror (34, 134, 234, 334, 434, 534, 734, 834) which is disposed rearwardly of the transparent substrate (20, 320, 420, 520, 820), wherein the light emitted by the light source (12, 312, 412, 512, 812A, 812B) is reflected repeatedly between the first half mirror (32, 132, 232, 332, 432, 532, 632, 832) and the mirror (34, 134, 234). , 334, 434, 534, 734, 834), while being transmitted through the transparent substrate (20, 320, 420, 520, 820), so as to be outputted forward from the first half-mirror (32, 132, 232, 332, 432, 532, 632, 832).
[0002]
The illumination unit (10, 110, 210, 410, 510, 710) according to claim 1, further comprising: a first transparent member (42, 442, 542) which is disposed between the transparent substrate (20, 420); 520) and the first half-mirror (32, 132, 232, 432, 532), wherein the first transparent element (42, 442, 542) is arranged such that a first surface of the first transparent element (42, 442, 542) is 442, 542) is in contact with the transparent substrate (20, 420, 520) and a second surface of the first transparent element (42, 442, 542) is in contact with the first half-mirror (32, 132, 232, 432 , 532).
[0003]
The lighting unit (10, 110, 210, 310, 510, 610) according to claim 1, further comprising: a second transparent member (44, 344, 544) which is disposed between the transparent substrate (20, 320); 520) and the mirror (34, 334, 534), wherein the second transparent member (44, 344, 544) is arranged such that a first surface of the second transparent member (44, 344, 544) is 302 Wherein a second surface of the second transparent member (44, 344, 544) is in contact with the mirror (34, 334, 534).
[0004]
The illumination unit (10, 110, 210) according to claim 1, further comprising a first transparent member (42) which is disposed between the transparent substrate (20) and the first half mirror (32, 132, 232); and a second transparent element (44) which is disposed between the transparent substrate (20) and the mirror (34), wherein the first transparent element (42) is arranged such that a first surface of the first transparent element (42) ) is in contact with the transparent substrate (20) and a second surface of the first transparent element (42) is in contact with the first half-mirror (32, 132, 232), and the second transparent element (44) is arranged so that a first surface of the second transparent element (44) is in contact with the transparent substrate (20, 320) and a second surface of the second transparent element (44) is in contact with the mirror (34).
[0005]
The illumination unit (210, 410) according to any one of claims 2 to 4, further comprising a second half-mirror (236, 436) which is disposed between the transparent substrate (20) and the mirror ( 234, 434).
[0006]
The lighting unit (410) according to claim 5, wherein the transparent substrate (420), the first half mirror (432) and the second half mirror (436) extend along a surface predetermined curvature, and the end portions of the transparent substrate (420), the end portions of the first half mirror (432) and the end portions of the second half mirror (436) are affixed to the mirror (434) . 30
[0007]
A vehicle lamp (500, 600, 700) comprising: the lighting unit (510, 610, 710) according to any one of claims 1 to 6; a transparent cover (502, 602); and a lamp body (504, 604, 704) in which the transparent cover (502, 602) and the lamp body (504, 604, 704) define a lamp chamber, the lamp contains the lighting unit (510, 610, 710), and the transparent substrate (520) and the first half mirror (532, 632) extend along the transparent cover (502, 602, 702.
[0008]
A lighting unit (910) comprising: a transparent substrate (920); a light source (912) which is mounted on a transparent substrate (920); a half mirror (936) which is disposed rearwardly of the transparent substrate (920); and a mirror (934) which is disposed at the rear side of the half-mirror (936).
[0009]
The lighting unit (910) of claim 8, further comprising: a first transparent member (944) which is disposed between the transparent substrate (920) and the half-mirror (936), and a second transparent member (946) which is disposed between the half-mirror (936) and the mirror (934).
[0010]
The lighting unit (910) according to any of claims 8 to 9, wherein the transparent substrate (920), the half-mirror (936) and the mirror (934) extend along a curved surface that is convex toward the front side of the lighting unit.

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同族专利:

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FR3021730B1|2019-07-26|

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US20150345740A1|2015-12-03|

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US10145537B2|2018-12-04|

DE102015210288A1|2015-12-03|

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法律状态:
2016-05-13| PLFP| Fee payment|Year of fee payment: 2 |

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2018-06-29| PLSC| Search report ready|Effective date: 20180629 |

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优先权:

申请号 | 申请日 | 专利标题

JP2014114685|2014-06-03|

JP2015081925|2015-04-13|

JP2015081925A|JP6518114B2|2014-06-03|2015-04-13|Lighting unit and vehicle lamp|

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