• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A lighting device (1) for a vehicle comprises a light source, an optical element (31), a holding element (32), a first reflector (4), a first shutter, a power supply element, a second reflector, second and third flaps. The second reflector is disposed between the optical element (31) and the first flap to reflect a portion of the light reflected by the first reflector (4) to the optical element (31). The second flap is disposed between the optical element (31) and the first flap to block a portion of the light that is not blocked by the first flap. The third flap is arranged to block the sunlight passing through the optical element (31) and reaches the holding element and / or the energy supply element. The second reflector and the second and third flaps are parts of a one-piece component made of the same material.
    公开号:FR3037379A1
    申请号:FR1655115
    申请日:2016-06-06
    公开日:2016-12-16
    发明作者:Teruaki Yamamoto
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    [0001] This application claims the priority of the Japanese patent application JP 2015-117720, filed on June 10, 2015, the content of which the skilled person can refer to. FIELD [0001] The present invention relates to a lighting device intended to be mounted on a vehicle. BACKGROUND [0002] An illumination device disclosed in Patent Document 1 includes a light source, an optical element, a rotating shutter, a driving source, and a power supply element. The optical element radiates the light emitted by the light source in a predetermined direction. The rotating shutter is disposed between the light source and the optical element. The rotary shutter is configured to be able to block some of the light emitted by the light source by rotating it about an axis. The drive source generates a force to rotate the rotary shutter. The energy supply element delivers energy to the drive source. [0003] Patent Document 1: Japanese Patent Open Publication 3P2014-010969. As described above, the optical element is arranged to radiate the light emitted by the light source in the predetermined direction. However, depending on the positional relationship between a vehicle and the sun, sunlight may pass through the optical element and be focused on the illumination device. It is necessary to take measures to prevent the components of the lighting device from being damaged by sunlight focused in this manner. SUMMARY [0005] It is an object of this invention to provide a configuration capable of preventing the components of a lighting device from being damaged by sunlight at low cost. . To achieve the above objective, a first aspect of the present invention provides a lighting device to be mounted on a vehicle.
    [0002] The lighting device comprises: a light source; an optical element configured to radiate light emitted from the light source in a predetermined direction; a holding member made of resin and configured to support the optical element; a first reflector configured to reflect a portion of light emitted by the light source to the optical element; a first flap disposed between the light source and the optical element and capable of blocking a portion of the light emitted by the light source by rotating or pivoting about an axis; a drive source configured to generate a force to rotate or pivot the first flap; a power supply element made of resin and configured to deliver power to the drive source; a second reflector disposed between the optical element and the first flap and configured to reflect a portion of the light reflected by the first reflector toward the optical element; a second flap disposed between the optical element and the first flap so as to block a portion of the light that is not blocked by the first flap; and a third shutter arranged to block the sunlight passing through the optical element and reaches the holding element and / or the energy supply element, wherein the second reflector, the second shutter and the third shutter. The shutter forms parts of a one-piece component made of the same material. As a one-piece component forming an integral part of the second reflector or the second flap which is required to be placed between the optical element and the first flap, the third component shutter is provided to protect resin components that are relatively susceptible to thermal damage. In this way, it is possible to provide a configuration capable of preventing the components of the lighting device from being damaged by sunlight at low cost. In order to achieve the above objective, a second aspect of the present invention provides a lighting device for mounting on a vehicle. The lighting device comprises: a light source; an optical element configured to radiate light emitted from the light source in a predetermined direction; a holding member made of resin and configured to support the optical element; A first reflector configured to reflect a portion of light emitted by the light source to the optical element; a first flap disposed between the light source and the optical element and capable of blocking a portion of the light emitted by the light source by rotating or pivoting about an axis; A drive source configured to generate a force to rotate or pivot the first flap; a power supply element made of resin and configured to deliver power to the drive source; a second reflector disposed between the optical element and the first flap and configured to reflect a portion of light reflected from the first reflector to the optical element; a second flap disposed between the optical element and the first flap so as to block a portion of the light that is not blocked by the first flap; and a third flap arranged to block the sunlight passing through the optical element and reaches the holding member and / or the energy supply element, wherein the second reflector constitutes a part of a first member formed of a first material, wherein the second flap and / or the third flap constitutes a portion of a second member formed of a second material different from the first material, and wherein the first member and the second member element are integrated by link. [0009] According to this configuration, the first element mainly performing a reflector function is provided separately from the second element primarily performing a light masking function. In this way, the degree of freedom in choosing an optimum material for each element is increased. In the case for example where the first element is formed of a stainless steel material, it is unnecessary to perform a surface treatment to obtain a stable reflective surface. Accordingly, it is possible to provide a configuration capable of preventing the components of the lighting device from being damaged by sunlight at a lower cost. The lighting device according to each aspect described above can be configured as follows.
    [0003] The first component is a rotary shutter. When the rotary shutter in which it is theoretically difficult to avoid a light leak on the side of the optical element is used as the first component, the effects of the second shutter become noticeable. The lighting device according to each aspect described above can be configured as follows. The illumination device comprises a support member for supporting the holding member, the first flap and the driving source, and the support member has a portion disposed between the first flap and the second reflector. That is to say, the shaft of the first flap and the second reflector 5 are arranged on opposite sides on either side of the support member. According to this configuration, it is possible to easily suppress the increase of the dimensions of a structure in the direction in which the first component, the support element and the second reflector are arranged, while guaranteeing a certain degree of freedom in the choice. 10 of the shape and arrangement of the second reflector, with respect to a configuration in which both the first flap shaft and the second reflector are disposed in front of the support member. In this case, the lighting device according to each aspect described above can be configured as follows. The support member is pivotable about a pivot axis, and the pivot axis extends between the first flap and the second reflector. According to this configuration, a pivot control for changing the radiation direction of light passing through the optical element in a plane perpendicular to the pivot axis can be executed.
    [0004] BRIEF DESCRIPTION OF THE DRAWINGS The invention will be well understood and its advantages will be better understood on reading the detailed description which follows. The description refers to the following drawings, which are given by way of example. Figure 1 is a partial sectional perspective view showing an aspect of a lighting device according to one embodiment. Fig. 2 is an exploded perspective view showing a configuration of the illumination device shown in Fig. 1.
    [0005] FIG. 3 is an exploded perspective view showing a configuration of a shutter unit of the illumination device shown in FIG. 1. FIG. 4A is a view showing a configuration of the illumination device. Figure 4B is a sectional view taken along line IVB-IVB of Figure 4A. Fig. 5A is a view showing another example of a multifunctional element of the lighting device shown in Fig. 1.
    [0006] Fig. 5B is a view showing another example of a multifunctional element of the illumination device shown in Fig. 1. DETAILED DESCRIPTION [0017] An explanatory embodiment will be described in detail below with reference to the accompanying drawings. . On the other hand, on each of the drawings used in the following description, the scale of each element is appropriately modified to have recognizable dimensions. Figure 1 is a perspective view in partial section showing an aspect of a lighting device 1 according to one embodiment. Fig. 2 is an exploded perspective view showing a configuration of the illumination device 1. The illumination device 1 is for example a headlight device for mounting on a vehicle. As shown in FIGS. 1 and 2, the lighting device 1 comprises a light source unit 2, a lens unit 3, a reflector 4 and a shutter unit 5. [0019] The source unit of light 2 comprises a light source 21, a heat sink 22, a drive control part 23 and an air cooling fan 24. As a light source 21, a light source can suitably be used A light bulb such as an incandescent lamp and a halogen lamp and a semiconductor light emitting element such as a light emitting diode, a laser diode or an organic EL element. The heat sink 22 supports the light source 21. The heat sink 22 is formed of a heat conductive material such as a metal. The heat sink 22 dissipates the heat caused by light emission from the light source 21. The drive control portion 23 has a circuit which receives a control signal from an external control device (not shown ) and controls the switching on / off of the light source 21. The air cooling fan 24 blows air towards the heat sink 22, so as to increase the heat dissipation effect. [0020] The lens unit 3 comprises a projection lens 31 (example of an optical element) and a lens holder 32 (example of a holding element). The projection lens 31 is formed of a transparent material. The projection lens 31 is configured to radiate the light emitted by the light source 21 in a predetermined direction. The lens holder 32 supports the projection lens 31. The lens holder 32 is formed of resin. The reflector 4 is attached to the light source unit 2. The reflector 4 is configured to reflect the light emitted by the light source 21 towards the projection lens 31. [0022] FIG. is an exploded perspective view showing a configuration of the shutter unit 5. The shutter unit 5 comprises a rotatable shutter 51, a support member 52, a motor 53, a transmission gear 54 and a connector. motor 55. [0023] The rotary flap 51 comprises a rotation shaft 51a and an input gear 51b. The support member 52 has a carrier arm portion 52a. The rotation shaft 51a is supported on the carrying arm portion 52a so as to be rotatable about the rotation shaft 51a. The motor 53 (exemplary drive source) has an output shaft 53a provided with a pinion gear. The rotation of the output shaft 53a is transmitted to the input gear 51b of the rotary flap 51 via the pinion gear and the transmission gear 54. That is to say, that the motor 53 generates a force to rotate the rotary flap 51. The motor connector 55 (example of a power supply element) is provided to supply power to control the motor 53. The motor connector 55 comprises a housing made of resin. As shown in FIGS. 1 and 2, the shutter unit 5 has a power supply connector 56 (example of a power supply element). The power supply connector 56 includes a first housing 56a, a power supply cable 56b and a second housing 56c. One end of the power supply cable 56b is electrically connected to a terminal provided in the first housing 56a. The other end of the power supply cable 56b is electrically connected to a terminal provided in the second housing 56c. The first housing 56a is connected to a mating connector (not shown) and receives a signal to control the control of the motor 53. The second housing 56c is connected to the motor connector 55. The first housing 56a, the outer housing the power supply cable 56b and the second housing 56c are made of resin. FIG. 4A is a front view showing the appearance of the lighting device 1. FIG. 4B is a sectional view along the line IVB-IVB of FIG. 4A. The rotary shutter 51 (example of the first shutter) is disposed between the light source 21 and the projection lens 31. The rotary shutter 51 has several types of end face 51c, 51d, 51e, which have different shapes depending on the circumferential angular position around the rotation shaft 51a. The rotary flap 51 is configured to be able to block a portion of the light emitted by the light source 21. As shown for example in FIG. 4B, when the end face 51c is disposed above, the light L1 passing over the end face 51c reaches the projection lens 31 without being blocked by the rotary shutter 51. The light L1 passing through the projection lens 31 forms, for example, a dipped beam pattern in front of a 303 7 3 7 9 9 vehicle. The shape of the end edge of the end face 51c is projected as a cutting line in front of the vehicle. On the other hand, in this state, the light L2 is blocked by the rotary shutter 51. When the motor 53 rotates the rotary shutter 51, and thus, it reaches a rotational angle position 5 in which the face end 51d is turned upwards, the light L2 reaches the projection lens 31 without being blocked by the rotary shutter 51, as shown by the dashed line. The light L2 having passed through the projection lens 31 forms, for example, a portion of a high beam pattern in front of the vehicle. As shown in FIGS. 3 and 4B, the shutter unit 5 comprises a multifunctional element 57. The multifunctional element 57 comprises an additional reflecting part 57a, a masking part of the trailing light 57b, a first sunlight masking portion 57c and a second sunlight masking portion 57d. The reflector 4 (example of the first reflector) has an additional reflective surface 42 for reflecting the light L3, in addition to a reflecting surface 41 for reflecting the light L1, L2, described above. The additional reflective portion 57a (example of second reflector) is disposed between the projection lens 31 and the rotatable shutter 51. The light L3 (i.e., a portion of the light emitted by the reflector 4) reflected by the additional reflective surface 42 is reflected towards the projection lens 31 by the additional reflecting portion 57a. The light L3 passing through the projection lens 31 forms, for example, an additional light distribution pattern for the illumination of an overhead warning sign in front of the vehicle. Overhead sign means here a signpost 30 located above the head on a road, etc. The rotary flap 51 may have a rotational angle position in which it is theoretically difficult to avoid forward light leakage. In the example shown in FIG. 4B, when the rotary flap 51 is rotated and thus the end face 51d is turned upwards, the light L4 emitted by the light source 21 passes below. The end face 57b turned downward. The masking part of the trailing light 57b (example of the second shutter) is disposed between the projection lens 31 and the shutter 51 so as to block the light L4 (that is to say a part of the light which is not blocked by the rotary flap 51). In this way, forward light leakage is prevented, regardless of the position of the rotation angle of the rotary shutter 51. [0031] Depending on the positional relationship between the vehicle and the sun, the light the sun can pass through the projection lens 31 and be focused on the lighting device 1. The first part of masking of the sunlight 57c (example of third shutter) is arranged so as to block the sunlight which passes through the projection lens 31 and reaches the lens holder 35 by internal reflection or the like. In this way, the lens holder 35 which is made of resin and is relatively susceptible to thermal damage can be protected from the focused light of the sun. Further, the second sunlight masking part 57d (third flap example) is arranged to block the sunlight passing through the projection lens 31 and reaches the motor connector 35 or the supply connector. of energy 56 by internal reflection or the like. In this manner, the motor connector 55 and the power supply connector 56 which are made of resin and are relatively susceptible to thermal damage can be shielded from the focused light of the sun. In the present embodiment, the additional reflective portion 57a, the masking portion of the trailing light 57b, the first masking portion of the sunlight 57c and the second masking portion of the sunlight. 57d are parts of the multifunctional element 57 which is a one-piece component made of the same material. The multifunctional element 57 is formed for example by die casting. [0033] On the other hand, in the present embodiment, as a one-piece component integral with the additional reflective portion 57a and the masking portion of the trailing light. 57b to be placed between the projection lens 31 and the rotating shutter 51, the first sunlight masking portion 57c and the second sunlight masking portion 57d, 5 are provided to protect the resin components. which are relatively susceptible to thermal damage. In this way, it is possible to provide a configuration capable of preventing the components of the lighting device from being damaged by sunlight at low cost. Figure 5A shows a multifunctional member 570 according to a modified example. The multifunctional member 570 includes a first member 571 and a second member 572. The first member 571 includes an additional reflecting portion 57a and a first joining portion 57e. The second element 572 is formed of a stainless steel plate or a plated steel plate (example of first material). The first element 571 is formed of a steel plate or an aluminum plate (example of a second material). The second member 572 includes the first sunlight masking portion 57c, the second sunlight masking portion 57d, and a second junction portion 57f. As shown in FIG. 5B, the multifunctional element 570 is integrally formed by connecting the first element 571 and the second element 572. Specifically, the first joining portion 57e of the first element 571 is connected to the second joining portion 57f of the second element 572. The joining is performed by welding, melting or bonding or by using a fastening element (caulking or rivet, etc.). The first connecting portion 57e and the second connecting portion 57f which are connected serve as a masking portion of the leakage light 57b. On the other hand, the portion serving as masking portion of the leakage light 57b is not necessarily formed by both the first joining portion 57e and the second joining portion 57f. Only one of the first junction portion 57e and the second junction portion 57f can serve as a masking portion of the leakage light 57b. Since the multifunctional member 57 described above has a complicated shape, the multifunctional member 57 is manufactured by die casting or the like. However, a surface treatment such as plating is necessary to stabilize the reflectivity of the additional reflection portion 57a. In the case of this modified example, the first element 571 primarily performing a reflector function is provided separately from the second element 572 primarily performing a light masking function. In this way, the degree of freedom in choosing the optimum material for each element is improved. In the case for example where the first member 571 is formed of a stainless steel material, it is unnecessary to perform a surface treatment to obtain a stable reflective surface. Accordingly, it is possible to provide a configuration capable of preventing the components of the lighting device from being damaged by sunlight at a lower cost. As shown in FIGS. 1 to 4, the lighting device 1 comprises a support element 58. The support element 58 comprises a plate portion 58a in which an opening 58a is formed. The base portion 52b is mounted on the front surface (surface of the side facing the projection lens 31) of the plate portion 58b of the support member 58. At this time, the carrying arm portion 52a on which the flap The rotational support 51 is rotatably supported, extends towards the rear side (side facing the light source 21) through the opening 58a of the support member 58. In this manner, the rotary flap 51 is disposed on the rear face of the plate portion 58b of the support member 58. The light source unit 2 is attached to the rear face of the plate portion 58b. The motor 53 and the multifunctional element 57 are mounted on the base part 52b of the support element 52. Thus, the motor 53 and the multifunctional element 57 are supported by the support element 58. Further, as shown in Fig. 1, the lens holder 32 is mounted on the plate portion 58b of the support member 58. Thus, the lens holder 32 is supported by the support member 58. Accordingly, the plate portion 58b of the support member 58 is disposed between the rotary shutter 51 and the additional reflecting portion 57a. That is to say that the additional reflecting portion 57a and the shaft 51a of the rotary flap 51 are disposed on the opposite faces on either side of the plate portion 58b of the support member 58 According to this configuration, it is possible to easily suppress the increase in dimensions in the longitudinal direction of the lighting device 1 while guaranteeing a certain degree of freedom in the choice of the shape and the arrangement of the additional reflecting part. 57a, with respect to a configuration in which both the shaft 51a of the rotary flap 51 and the additional reflecting portion 57a are disposed in front of the plate portion 58a. As shown in FIGS. 1, 3 and 4B, a pivot shaft portion 58c is provided at the upper and lower ends of the plate portion 58b of the support member 58. The support member 58 is pivotable around a pivot axis A passing through the pivot shaft portion 58c in a plane perpendicular to the pivot axis A.
    [0007] That is, the pivot axis A extends between the rotary flap 51 and the additional reflecting portion 57a. In this manner, a pivot control for changing the radiation direction of the light passing through the projection lens 31 in the lateral direction of a vehicle can be executed. The above embodiment is only an example to facilitate the understanding of the present invention. The configurations according to the above embodiment can be changed and modified appropriately without departing from the essence of the present invention.
    [0008] In addition, it is apparent that equivalents are included in the technical scope of the present invention. The rotary flap 51 as an example of the first flap can be replaced by a shutter-type flap which switches a blocking state 35 and a state of absence of locking by rotating it about a pivot axis. . In this case, the motor as a driving source example may be replaced by an actuating device using a solenoid or the like. [0044] It is not necessarily required that the projection lens 31 has a lens function. A scatter function or the like may be imparted to the projection lens, since some of the light emitted by the light source 21 may pass through the projection lens and may be radiated in a predetermined direction. In multifunctional element 57 or multifunctional element 570, any one of the first sunlight masking portion 57c and the second sunlight masking portion 57d may be omitted. according to the specification of the lighting device 1. 15
    权利要求:
    Claims (5)
    [0001]
    REVENDICATIONS1. A lighting device (1) for mounting on a vehicle comprising: a light source (21); an optical element (31) configured to radiate light emitted from the light source (21) in a predetermined direction; a holding member (32) made of resin and configured to support the optical element (31); a first reflector (4) configured to reflect a portion of the light emitted by the light source (21) to the optical element (31); a first flap (51) disposed between the light source (21) and the optical element (31) and capable of blocking a portion of the light emitted by the light source (21) by rotating or rotating it around an axis (51a); a drive source (53) configured to generate a force to rotate or pivot the first flap (51); a power supply element (55) made of resin and configured to supply power to the drive source (53); a second reflector (57a) disposed between the optical element (31) and the first flap (51) and configured to reflect a portion of the light reflected by the first reflector (4) towards the optical element (31); a second flap (57b) disposed between the optical element (31) and the first flap (51) so as to block a portion of the light which is not blocked by the first flap (51); and a third shutter (57c) arranged to block the sunlight passing through the optical element (31) and reaches the holding element (32) and / or the energy supply element (55), wherein the second reflector (57a), the second flap (57b) and the third flap (57c) constitute portions of a one-piece component made of the same material.
    [0002]
    A lighting device (1) for mounting on a vehicle comprising: a light source (21); An optical element (31) configured to radiate the light emitted from the light source (21) in a predetermined direction; a holding member (32) made of resin and configured to support the optical element (31); A first reflector (4) configured to reflect a portion of the light emitted by the light source (21) to the optical element (31); a first flap (51) disposed between the light source (21) and the optical element (31) and capable of blocking a portion of the light emitted by the light source (21) by rotating or rotating around it an axis (51a); a drive source (53) configured to generate a force to rotate or pivot the first flap (51); a power supply element (55) made of resin and configured to supply power to the drive source (53); A second reflector (57a) disposed between the optical element (31) and the first flap (51) and configured to reflect a portion of light reflected from the first reflector (4) to the optical element (31); a second flap (57b) disposed between the optical element (31) and the first flap (51) so as to block a portion of the light which is not blocked by the first flap (51); and a third shutter (57c) arranged to block the sunlight passing through the optical element (31) and reaches the holding element (32) and / or the energy supply element (55), wherein the second reflector (57a) constitutes a portion of a first member (571) formed of a first material, wherein the second member (57b) and / or the third member (57c) constitutes a portion of a second member (572) formed of a second material different from the first material, and wherein the first member (571) and the second member (572) are integrally bonded.
    [0003]
    3. Lighting device (1) according to claim 1 or 2, wherein the first flap (51) is a rotary flap. 35
    [0004]
    4. Lighting device (1) according to any one of claims 1 to 3, wherein the lighting device (1) further comprises a support element (58) for supporting the element for holding (32), the first flap (51) and the drive source (53), and wherein the support member (58) has a portion disposed between the first flap (51) and the second reflector (57a). ).
    [0005]
    The lighting device (1) according to claim 4, wherein the support member (58) is pivotable about a pivot axis, and wherein the pivot axis (A) extends between the first flap (51) and the second reflector (57a).
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    同族专利:
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    法律状态:
    2017-05-11| PLFP| Fee payment|Year of fee payment: 2 |
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    JP2015117720|2015-06-10|
    JP2015117720A|JP6510330B2|2015-06-10|2015-06-10|Vehicle lighting system|
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