• 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 vehicle lighting device (1) comprises a light source (7b), a projection lens (5), a control circuit board (7d) and a housing (2). The light source (7b) has a light emitting surface (7b1). The projection lens (5) faces the light emitting surface (7b1) and is arranged so that at least a portion of the light emitted by the light source (7b) passes through the projection lens (5). The control circuit board (7d) has a circuit configured to control the switching on and off of the light source (7b). The housing (2) supports the light source (7b) and the control circuit board (7d) and defines a portion of a lamp chamber (4) which contains the projection lens (5). A first direction (N1) which is the normal direction relative to the light emitting surface (7b) intersects a second direction (N2) which is the normal direction relative to the main surface (7d) of the control circuit board (7d).
    公开号:FR3024897A1
    申请号:FR1557762
    申请日:2015-08-17
    公开日:2016-02-19
    发明作者:Hiroki Shibata
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    [0001] BACKGROUND Field [0001] Examples of embodiments of the invention relate to a vehicle lighting device. Associated Technique [0002] Fog lamps, in which a light source and a projection lens are housed in a lamp chamber defined by a housing and a transparent cover, are known as an example of a vehicle lighting device . The light emitted by the light source is subject to specific directional control as it passes through the projection lens, and forms a specific light distribution pattern in front of a vehicle (see for example, JP 2011 -108570 A).
    [0002] SUMMARY [0004] Some of the exemplary embodiments of the invention respond to a request for further decreasing the dimensions of a vehicle lighting device. [0005] (1) According to an exemplary embodiment, a vehicle lighting device comprises a light source, a projection lens, a control circuit board and a housing. The light source has a light emitting surface. The projection lens faces the light emitting surface and is arranged so that at least a portion of the light emitted by the light source passes through the projection lens. The control circuit board includes a circuit for controlling the switching on and off of the light source. The housing supports the light source and the control circuit board and defines a portion of a lamp chamber that contains the projection lens. A first direction which is the normal direction of the light emitting surface intersects a second direction which is the normal direction of the main surface of the control circuit board. Since the control circuit board is disposed in the manner described above, the projected area of the illumination device on a plane orthogonal to the normal direction of the light emitting surface can be made inferior relative to the case where the normal direction of the main surface of the control circuit board 10 coincides with the normal direction of the light emitting surface of the light source. The amplitude of the surface area gives an observer a particularly strong impression. It is generally strongly requested to reduce this projected area. With the configuration described above, such a demand for the vehicle lighting device can be satisfied. (2) In the lighting device according to (1), the first direction may be orthogonal to the second direction. [0007] (3) In the lighting device according to any one of (1) to 20 (2), the housing may include an attachment portion to which a transparent cover is attached. The transparent cover and the housing can define the lamp chamber. The attachment portion may obliquely cut the main surface of the control circuit board as seen in the second direction. [0008] A portion of the vehicle to which the fog lamp 1 is attached is generally configured by a surface that extends obliquely, seen in the upward and downward directions of the vehicle. The fastening portion of the transparent cover is configured to have a shape which cuts obliquely the main surface of the control circuit board. The lamp chamber 4 can thus be shaped to have a shape conforming to the obliquely extending surface, and the decrease in aerodynamic performance can be suppressed. In addition, there remains a portion of the control circuit board through which it is easy to access the main surface. This part may be used for placement of the components to secure the control circuit board to the housing support table. Accordingly, while the demand for reducing the size of the vehicle lighting device is satisfied, the efficiency of the fixing work of the control circuit board is not degraded. [0009] (4) In the lighting device according to any one of (1) to (3), the housing may be a single metal element which is integrally molded with a plurality of radiator fins. The housing may be provided with a ventilation portion which is in communication with the lamp chamber. With this configuration, the housing, which defines a portion of the lamp chamber, can also serve as a heat sink. This configuration makes it possible to reduce the dimensions of the entire lighting device from the configuration in which a housing, made of a resin or the like, and defining part of a lamp chamber, is provided in addition to a heat sink. Accordingly, the configuration described above can satisfy a request for further reduction of the dimensions of the vehicle lighting device. [0011] To dehumidify the interior of the lamp chamber, the ventilation portion is provided in the heat sink housing. As a result, condensation associated with a temperature drop in the lamp chamber first occurs on the housing, which decreases the need for anti-condensation treatment on the projection lens and the transparent cover. Accordingly, the configuration described above can satisfy not only the demand for reducing the size of the vehicle lighting device, but also the demand for cost reduction. (5) The lighting device according to any one of (1) to (3) may further include a vent cover. The housing may be provided with a venting portion that is in communication with the lamp chamber and that defines an airflow passage opening toward the opposite side of the housing relative to the lamp chamber. The ventilation cover 35 covers the ventilation part. The lighting device according to any one of (1) to (5) may further include a support, a pivot shaft, a shaft bearing and a sighting mechanism. The holder holds the projection lens. The position of the support is fixed with respect to the light source. The pivot shaft is provided in one of the projection lens and the support and extends in a direction intersecting the optical axis of the projection lens. The shaft bearing is provided in the other one of the projection lens and the support and holds the pivot shaft. The sighting mechanism rotates the projection lens about the pivot shaft relative to the support. With this configuration, it is possible to directly rotate the projection lens, which is held by the support, to adjust the reference position of the optical axis of the projection lens. Thus, the request for reducing the size of the vehicle lighting device is satisfied, while the projection lens and the sighting mechanism for adjusting its optical axis can be provided. (7) In the lighting device according to (6), the sighting mechanism 20 may include a screw and a hinge. The screw may include a portion operable from outside the housing to rotate. The hinge can convert the rotation of the screw into a force rotating the projection lens around the pivot shaft. The screw can extend so as to pass through a portion of the housing. The main surface of the control circuit board may face a portion of the screw. With this configuration, the space required to provide the sighting screw can be used effectively, while the increase in dimensions of the housing can be removed. As a result, the demand for reducing the size of the vehicle lighting device is satisfied, while the projection lens and the aiming mechanism for adjusting its optical axis can be provided. [0016] (8) In the lighting device according to (7), the hinge can be an integral part of the projection lens. With this configuration, the number of components can be reduced, while the request to reduce the dimensions of the vehicle lighting device is satisfied. In the case where the lens and the hinge are provided so that they can be separated from one another, the molding of the individual elements is facilitated. (9) In the lighting device according to any one of (7) to (8), the housing may include a contour portion having a circular shape, viewed in the first direction. A passage and a ventilation portion may be formed in the housing. A power line for delivering power to the circuit can pass through the passage. The ventilation part can be in communication with the lamp chamber. The screw can extend so as to pass through the housing between the passage and the ventilation part. The housing has the contour portion having the circular shape seen in the normal direction relative to the light emitting surface of the light source. As a result, the projected area of the vehicle lighting device on a plane orthogonal to the normal direction can be made small. In the case where the housing has such a shape, it is relatively easy to ensure a space, in which are arranged the components near its central part. The sighting screw having a relatively large size is disposed between the through hole and the vent portion, which have relatively small dimensions. Thus, the sighting screw can be arranged effectively near the central part of the housing. As a result, the demand for reducing the size of the vehicle lighting device is satisfied, while the projection lens and the sighting mechanism for adjusting its optical axis can be provided.
    [0003] 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.
    [0004] Figure 1 is a perspective view illustrating a fog lamp according to an exemplary embodiment; Figure 2 is a perspective view partially illustrating the fog lamp of Figure 1; Fig. 3 is a perspective view partially illustrating the fog lamp of Fig. 1; Figure 4 is a perspective view partially illustrating the fog lamp of Figure 1; Fig. 5 is a perspective view partially illustrating the fog lamp of Fig. 1; Figure 6 is a bottom view of the fog lamp of Figure 1, a portion of the bottom view being a sectional view; Figure 7 is a perspective view partially illustrating the fog lamp of Figure 1; Fig. 8 is a perspective view illustrating a projection lens provided in the fog lamp of Fig. 1; Figure 9 is a perspective view illustrating a lens holder provided in the fog lamp of the figure; Figs. 10A-10C are side views illustrating the operation of the sighting mechanism provided in the fog lamp of Fig. 1; and Fig. 11 is a front view partially illustrating the fog lamp of Fig. 1.
    [0005] DETAILED DESCRIPTION [0021] A detailed description of exemplary embodiments of the invention will be provided with reference to the accompanying drawings. In the drawings to which reference will be made in the description, the scale is suitably adjusted so that the respective elements are sufficiently large to be recognizable. On the other hand, "right" and "left" in the description indicate the left and right directions seen from the driver's seat of a vehicle. [0022] FIG. 1 is a perspective view illustrating the external appearance of a fog lamp 1 (example of a lighting device) according to the exemplary embodiment of the invention, seen from the part front right upper. The fog lamp 1 shown in Figure 1 is intended to be mounted in the front right of a vehicle. A fog lamp intended to be mounted in the left front part of the vehicle has a shape with a bilateral symmetry with respect to the fog lamp 1 shown in FIG. 1. The fog lamp 1 comprises a housing 2 and a transparent cover 3 The transparent cover 3 is fixed to the housing 2, defining a lamp chamber 4. [0024] Fig. 2 is a perspective view partially illustrating the fog lamp 1, the transparent cover 3 being removed, seen from the front left part. higher. The housing 2 comprises a rear plate 2a, a support table 2b and several radiator fins 2c. The peripheral edge portion of the front surface of the back plate 2a constitutes a fixing portion 2a1 to which the transparent cover 3 is attached. The support table 2b is provided in front of the rear plate 2a and is housed in the lamp chamber 4. The different radiator fins 2c are provided at the rear surface of the backplate 2a and extend in the upward and downward directions. That is, the different radiator fins 2c are disposed outside the lamp chamber 4. [0025] The fog lamp 1 comprises a projection lens 5, a lens holder 6 and a unit 7. The projection lens 5, the lens holder 6 and the light source unit 7 are housed in the lamp chamber 4. [0026] Fig. 3 is a perspective view partially illustrating the fog lamp 1, seen from the upper left front part, wherein the projection lens 5 has been removed from the state shown in Figure 2. The light source unit 7 comprises a support card 7a, a source light 7b and a first connector 7c.
    [0006] The support card 7a is mounted on the front surface of the support table 2b of the housing 2. The light source 7b and the first connector 7c are disposed on the front surface of the support card 7a. Circuit wiring (not shown) is formed on the support board 7a and electrically interconnects the light source 7b is the first connector 7c. In this exemplary embodiment, the light source 7b includes a semiconductor light emitting element having a light emitting surface 7b1. Examples of a semiconductor light emitting element include a light emitting diode, a laser diode, and an organic electroluminescent (EL) element. The number of light emitting elements is not specifically limited, but may be suitably set according to the specifications of the vehicle lighting device. [0028] FIG. 4 is a perspective view partially illustrating the fog lamp 1, seen from the lower left front part, in which the lens holder 6 has been removed with respect to the state shown in FIG. Figure 5 is a perspective view illustrating the same state as Figure 4, seen from the lower left rear part. The light source unit 7 further includes a control circuit board 7d and a second connector 7e. The control circuit board 7d comprises a light source control circuit which controls the switching on and off of the light source 7b. The second connector 7e is electrically connected to the light source control circuit. The control circuit board 7d is mounted on the underside of the support table 2b of the housing 2. As shown in FIGS. 4 and 5, the fog lamp 1 30 comprises a wiring unit 8. Wiring 8 comprises an external connector 8a, a first internal connector 8b, a second internal connector 8c, a third internal connector 8d, a first connection wire 8e, a second connection wire 8f and a sealing element 8g. The outer connector 8a is disposed outside the lamp chamber 4. The external connector 8a is configured to be connectable to a peer connector (not shown) which is connected to a power source. or an integrated controller. The power source and / or the integrated controller are mounted in the vehicle provided with the fog lamp 1. The mating connector is connected to the power source or to the integrated controller so that (i) energy can be delivered between the peer connector and the power source or the integrated controller, or (ii) communication can be established between the peer connector and the power source or integrated controller. The first internal connector 8b is connected via the first connection wire Se to the external connector 8a, so that the first internal connector 8b can communicate with the external connector 8a. The first internal connector 8b is connected to the second connector 7e provided in the control circuit board 7d. The energy delivered by the power source or a control signal transmitted by the integrated controller is applied to the input of the light source control circuit provided in the control circuit board 7d via the external connector. 8a, the first internal connector 8b and the second connector 7e. The first connecting wire 8e extends so as to pass through the sealing member 8g. The sealing member 8g is fitted to a through hole formed in the back plate 2a. The through hole is formed below the support table 2b and the different radiator fins 2c. The second internal connector 8c and the third internal connector 8d are connected to each other via the second connection wire 8f so that (i) energy can be delivered between them or (ii) a communication may be established between them. The second internal connector 8c is connected to the second connector 7e provided in the control circuit board 7d. As shown in FIG. 3, the third internal connector 8d is connected to the first connector 7c 35 provided in the support card 7a. A control signal output from the light source control circuit of the control circuit board 7d is applied to the input of the light source 7b via the second internal connector 8c of the third internal connector 8d and the first connector 7c. The light source 7b is thus switched on and off as desired. As shown in FIG. 4, in this exemplary embodiment, the normal direction Ni (first direction example) with respect to the light emitting surface 7b1 of the light source 7b is orthogonal to the normal direction N2 (example of a second direction) with respect to the main surface 7d1 of the control circuit board 7d. Note that the term "main surface" refers to a surface having the largest area among the surfaces constituting the control circuit board 7d. Since the circuit board 7d is arranged in this manner, at least one dimension of (i) the size of the fog lamp 1 in the upward and downward directions and (ii) the size of the fog lamp 1 in the right and left directions can be made small in relation to the configuration in which the main surface of the control circuit board coincides with the normal direction with respect to the light emitting surface of a source of light (that is, the main surface faces the forward direction or the rearward direction). In other words, seen from the front side of the fog lamp 1, the projected area of the fog lamp 1 25 on a plane including the up and down directions and the directions to the right and to the left can be rendered small. The amplitude of the projected area gives an observer a particularly strong impression. It is generally strongly requested to reduce the projected area. With the configuration described above, such a demand for a fog lamp constituting an example of a vehicle lighting device can be satisfied. Figure 6 shows the fog lamp 1 seen from below, the transparent cover 3 only being drawn in section. As described above, the housing 2 includes the fixing portion 2a1 to which the transparent cover 3 is attached. The transparent cover 3 and the housing 2 define the lamp chamber 4 with the housing 2. View in the direction normal N2 of the main surface 7d1 of the control circuit board 7d, the fixing portion 2a1 obliquely cuts the main surface 7d1. Part of the vehicle to which the fog lamp 1 is attached is generally configured by an obliquely extending surface viewed in the upward and downward directions of the vehicle. The fixing portion 2a1 of the transparent cover 3 is configured to have a shape which obliquely intersects the main surface 7d1 of the control circuit board 7d as described above. Thus, the lamp chamber 4 may be shaped to have a shape conforming to the obliquely extending surface. In addition, there remains a portion of the control circuit board 7d through which it is easy to access the main surface 7d1. This part may be used to place components for attaching the control circuit board 7d to the support table 2b of the housing 2. Accordingly, while the reduction request of the dimensions of a fog lamp which is an example of a control device. The vehicle lighting is satisfied, the output of the fixing work of the control circuit board 7d is not degraded. As shown in FIGS. 4 and 5, the housing 2 comprises a pair of left fixing parts 2d and a pair of right fixing parts 2e. The left fixing portions 2d are provided on the left end portion of the fixing portion 2a1 so as to be arranged in the upward and downward directions and extend to the left. The right securing portions 2e are provided on the right end portion of the securing portion 2a1 so as to be arranged in the upward and downward directions and extend to the right. As shown in FIG. 6, the pair of left fixing portions 2d is disposed on the front side of the pair of right securing portions 2e. The left fixing parts 2d and the right fixing parts 2e are respectively provided with through-holes which open in the front and rear directions of the fog lamp 1. Each through-hole makes it possible to pass a fixing element through them. The fasteners are used to attach the fog lamp 1 to predetermined parts of the vehicle. As shown in Figure 5, a ventilation cover 10 5 is attached to the rear surface of the housing 2. Figure 7 is a perspective view partially illustrating the fog lamp 1, seen from the lower left rear part, the ventilation cover and the sealing member 8g of the wiring unit 8 being removed from the state shown in Figure 5. The housing 2 has a ventilation portion 10 2f. The ventilation portion 2f is in communication with the lamp chamber 4 and constitutes an air flow passage opening towards the rear side of the housing 2. The ventilation cover 10 is fixed to the housing 2 so as to cover the portion ventilation 2f. This prevents water and dust from entering the lamp chamber 4 through the ventilation part 2f. In this exemplary embodiment, the back plate 2a, the support table 2b (see Figure 3), the different radiator fins 2c, the pair of left fixing parts 2d, the pair of fixing parts 20 2f right and the ventilation portion 2f are parts of a single integrally molded metal element. That is, while defining a portion of the lamp chamber 4, the housing serves as a heat sink. This configuration makes it possible to reduce the dimensions of the totality of the fog lamp 1 with respect to the configuration in which a housing, made of a resin or the like, and defining a part of a lamp chamber, is provided in more than one heat sink. As a result, the configuration described above can satisfy a further reduction request of the dimensions of the fog lamp 1 which is an example of a vehicle lighting device. The ventilation portion 2f is formed to dehumidify the interior of the lamp chamber 4. That is, the ventilation portion 2f is provided to suppress the condensation due to the variations of temperature in the lamp chamber 4, produced by switching on and off the light source 7b. In this exemplary embodiment, the ventilation portion 2f is provided in the housing 2 serving as a heat sink. As a result, the condensation associated with a temperature drop in the lamp chamber 4 first occurs on the housing 2, which decreases the need for anticondensation treatment on the projection lens 5 and the transparent cover 3. Accordingly, the above configuration can satisfy not only a demand for reducing the dimensions of the vehicle lighting device, but also a cost-saving demand. As shown in Figure 3, the lens holder 6 is attached to the front surface of the support card 7a. As shown in FIG. 2, the lens holder 6 holds the projection lens 7. At least a portion of the light emitted by the light source 7b passes through the projection lens 5. The light having passed through the projection lens 5 then passes through the transparent cover 3 and illuminates in front of the fog lamp 1. The structure by means of which the lens holder 6 holds the projection lens 5 will then be described with reference to FIGS. 8 and 9. FIG. 8 is a perspective view illustrating an exterior view of the projection lens when the projection lens is viewed from the lower left rear portion. Fig. 9 is a perspective view illustrating an external view of the lens holder 6 attached to the light source unit 7 when the lens holder 6 is viewed from the lower left front portion. As shown in FIG. 8, the projection lens 5 comprises a right pivot shaft 5a and a left pivot shaft 5b. The right pivot shaft 5a is disposed at the right side of the projection lens 5. The right pivot shaft 5a is shaped in a semi-spherical shape. The spherical surface of the right pivot shaft 5a is turned to the right. The left pivot shaft 5b is disposed at the left side portion of the projection lens 5. The left pivot shaft 30b is formed in a semi-spherical shape. The spherical surface of the left pivot shaft 5b is turned to the left. An axis "A" connecting the center of the right pivot shaft 5a to the center of the left pivot shaft 5b extends in a direction orthogonal to the optical axis B of the projection lens 5. [ 0046] As shown in Fig. 9, the lens holder 6 has a straight shaft bearing 6a and a left shaft bearing 6b. The right shaft bearing 6a and the left shaft bearing 6b are provided on the front surface of the lens holder 6. The right shaft bearing 6a has a peripheral wall 6a1, a pair of protuberances 6a2, and a curved bearing surface 6a3. The peripheral wall 6a1 protrudes forwardly from the front surface of the lens holder 6 and extends as a semicircular arc. The semicircular arc of the peripheral wall 6a1 is open to the left. Each protuberance 6a2 extends from the front end portion of the peripheral wall 6a1 inwardly of the semicircular arc so as to overhang. Each protuberance 6a2 may flexibly deform backward to some extent. The curved bearing surface 6a3 is disposed within the semicircular arc of the peripheral wall 6a1 and faces the pair of protuberances 6a2. The curved bearing surface 6a3 has a shape conforming to the hemispherical surface of the right pivot shaft 5a. The left shaft bearing 6b has a peripheral wall 6b1, a pair of protuberances 6b2 and a curved bearing surface 6b3. The peripheral wall 6b1 protrudes forwardly from the front surface of the lens holder 6 and extends as a semicircular arc. The semicircular arc of the peripheral wall 6b1 is open to the right. Each protuberance 6b2 extends from the front end portion of the peripheral wall 6b1 inwardly of the semicircular arc so as to overhang. Each protuberance 6b2 may flexibly deform backward to some extent. The curved bearing surface 6b3 is disposed within the semicircular arc of the peripheral wall 6b1 and faces the pair of protuberances 6b2. Although concealed by the pair of protuberances 6b2 in FIG. 9, the curved bearing surface 6b3 is symmetrical in the right and left directions with respect to the curved bearing surface 6a3 and has a curved shape. conformant to the hemispherical surface of the left pivot shaft 5b. The projection lens 5 and the lens holder 6 having the above configuration are joined together as shown in FIG. 2. When the projection lens 5 and the lens holder 6 are joined together, the landing the right shaft 6a and the left shaft bearing 6b of the lens holder 6 respectively hold the right pivot shaft 5a and the left pivot shaft 5b of the projection lens 5. [0050] Specifically, the The right pivot shaft 5a is pressed against the right shaft bearing 6a, so that the right pivot shaft 5a enters a region defined by the peripheral wall 6a1 while deforming the pair of protuberances 6a2 rearward. When a portion of the semi-spherical surface of the right pivot shaft 5a is in contact with the curved bearing surface 6a3, the pair of protuberances 6a2 return to their original position thus preventing the right pivot shaft. 5a to go out forwards. As a result, the right pivot shaft 5a can pivot in the region defined by the peripheral wall 6a1 and in a plane orthogonal to the axis "A" shown in Fig. 8. [0051] Similarly, left pivot shaft 5b is pressed against the left shaft bearing 6b, so that the left pivot shaft 5b enters a region defined by the peripheral wall 6b1 while deforming the pair of protuberances 6b2 rearwardly. When a portion of the semispherical surface of the left pivot shaft 5b contacts the curved bearing surface 6b3, the pair of protuberances 6b2 return to their original position thereby preventing the left pivot shaft. 5b to go out to the front. As a result, the left pivot shaft 5b can pivot in the region delimited by the peripheral wall 6b1 and in a plane orthogonal to the axis "A" shown in Fig. 8. [0052] As shown in FIG. Figures 4 and 5, the fog lamp 1 comprises a sighting screw 9. The aiming screw 9 comprises a head 9a and a rod 9b. As shown in FIG. 5, the head 9a is disposed below the various radiator fins 2c and on the rear surface of the back plate 2a of the housing 2. That is, the head 9a is disposed at the bottom of the housing 2. 2. The head 9a can be actuated and rotated by means of a specific tool. The rod 9b passes through the rear plate 2a and extends inside the lamp chamber 4. The outer peripheral surface of the rod 9b is shaped with a mesh groove. As shown in FIG. 8, the projection lens 5 has a coupling portion 5c and a hinge 5d. The coupling portion 5c is integrally molded with the lower portion of the projection lens 5 and extends downwardly from the bottom portion.
    [0007] The hinge 5d is attached to the coupling portion 5c. A through hole 5d1 is formed in the hinge 5d. A thread tapping is formed in the inner peripheral surface of the through hole 5d1. As shown in Figure 2, the rod 9b of the aiming screw 9 is inserted into the through hole 5d1 of the articulation 5d. At this time, the thread groove formed in the outer peripheral surface of the rod 9b is screwed into the thread tapping formed in the inner peripheral surface of the through hole 5d1. When the head 9a of the aiming screw 9 is actuated and rotated by means of the specific tool, the position in which the rod 9b is screwed into the hinge 5d is modified, thereby displacing the hinge 5d in the forward directions and back. FIGS. 10A-10C are left-side views for explaining how the projection lens 5 moves in association with the rotation of the aiming screw 9. FIG. 10A illustrates an initial state. When the aiming life 9 is turned to advance in this state, the articulation 5d is moved forward. In association with this displacement, the coupling portion 5c of the projection lens 5 is pushed forward. At this time, the right pivot shaft 5a and the left pivot shaft 5b of the projection lens 5 rotate clockwise (seen from the left) in the right shaft bearing. 6a and the left shaft bearing 6b of the lens holder 6. The optical axis B of the projection lens 5 is inclined accordingly upwards as shown in FIG. 10B. On the other hand, when the aiming screw 9 is turned to retreat, the articulation 5d is moved backwards. In association with this movement, the coupling portion 5c of the projection lens 5 is pushed back. At this time, the right pivot shaft 5a and the left pivot shaft 5b of the projection lens 5 rotate counterclockwise (seen from the left) in the right shaft bearing 6a. and the left shaft bearing 6b of the lens holder 6. The optical axis B of the projection lens 5 is inclined accordingly downwards as shown in Fig. 10C. That is to say, the aiming screw 9 and the articulation 5d constitute a sighting mechanism for rotating the projection lens 5 around the right pivot shaft 5a and the left pivot shaft. 5b with respect to the lens holder 6. When the head 9a of the sighting screw 9 is actuated and rotated, the rod 9b is rotated and the hinge 5d converts the rotation of the rod 9b into a rotational force of the lens Thus, a reference position, in the upward and downward directions, of the optical axis B of the projection lens 5 can be adjusted by means of the rotation operation of the screw. With the configuration described above, the reference position of the optical axis B of the projection lens 5 can be adjusted by directly rotating the projection lens 5, which is maintained by the projection lens 5. 6. As a result, requests for reduction of the size of the phar The fog lamp constituting an example of a vehicle lighting device is satisfied, while the projection lens 5 and the aiming mechanism for adjusting the optical axis of the projection lens are provided. As shown in FIG. 4, the control circuit board 7d provided with the light source control circuit is arranged so that the main surface 7d1 faces the sighting screw 9 constituting part of the sighting mechanism. With this configuration, the space required to provide the sighting screw 9 can be effectively used, while the increase in the dimensions of the housing 2 can be eliminated. As a result, the demand for reducing the size of the fog lamp, constituting an example of a vehicle lighting device, is satisfied, while the projection lens 5 and the aiming mechanism for adjusting its optical axis can be provided. It will be noted that the aiming mechanism does not necessarily include a sighting screw that can be actuated from outside the housing 2. For example, an actuating device, coupled to the projection lens 5, can be provided. in the lamp chamber 4 and the projection lens 5 can be rotated relative to the lens holder 6 by means of the actuating device. In this case, signals for controlling the actuator may be inputted through the wiring unit 8. [0063] Fig. 11 is a front view of a portion of the fog lamp 1 in the state shown in Fig. 3, when the fog lamp 1 is seen in the normal direction Ni of the light emitting surface 7b1 of the light source 7b. The housing 2 has a contour portion having a circular shape, viewed in the normal direction Ni. As shown in FIG. 7, a through hole 2g of the housing 2 is exposed in a state in which the sealing member 8g of the wiring unit 8 is removed. The through hole 2g is a passage for the first connecting wire 8e to cross. The first lead 8e, constituting an example of a power line, supplies power to the light source control circuit of the control circuit board 7d. The sighting screw 9 extends so as to pass through the housing 2 between the through hole 2g described above and the ventilation portion 2f. The housing 2 comprises the contour portion having the circular shape 5 seen in the normal direction Ni of the light emitting surface 7b1 of the light source 7b. Accordingly, the projected area of the fog lamp 1 on a plane including the right and left directions and the up and down directions of the fog lamp 1 may be small. In the case where the housing 2 has such a shape, it is relatively easy to provide a space in which the components are disposed near its central portion in the right and left directions. The sighting screw 9 having relatively large dimensions is disposed between the through hole 2g and the ventilation portion 2f having relatively small dimensions. The aiming screw 9 can thus be arranged effectively near the central part of the housing 2 in the right and left directions. As a result, the demand for reducing the size of the fog lamp, constituting an example of a vehicle lighting device, is satisfied while the projection lens 5 and the sighting mechanism for adjusting its optical axis can be provided. The above exemplary embodiment is described for the purpose of facilitating the understanding of the invention. However, the invention is not limited thereto. The invention may of course be modified and improved insofar as the modifications and improvements do not deviate from its scope and such equivalents are encompassed by the invention. In the exemplary embodiment above, the normal direction Ni of the light emitting surface 7b1 of the light source 7b is orthogonal to the normal direction N2 of the main surface 7d1 of the card control circuit 7d. However, the normal direction Ni and the normal direction N2 are not necessarily orthogonal to each other since the directions Ni and N2 intersect each other. In the above exemplary embodiment, the main surface 7d1 of the control circuit board 7d provided with the light source control circuit is arranged so as to be turned downwards in However, the orientation of the main surface 7d1 may be adjusted as appropriate since the normal direction Ni of the light emitting surface 7b1 intersects the normal direction N2 of the main surface 7d1. The main surface 7d1 of the control circuit board 7d may be arranged to be turned up, to the left or to the right of the fog lamp 1. In the exemplary embodiment of the present invention, above, the light-emitting surface 7b1 of the light source 7b is arranged to be turned towards the projection lens 5. With this configuration, the distance between the light source 7b and the projection lens 5 is short . However, the orientation of the light emitting surface 7b1 of the light source 7b can be set as appropriate according to the fog lamp 1 specifications, since the normal direction Ni of the light emitting surface 7b1 intersects the direction normal N2 of the main surface 7d1 of the control circuit board 7d. In the exemplary embodiment above, the right pivot shaft 5a and the left pivot shaft 5b are provided in the projection lens 5 and the right shaft bearing 6a and the bearing. 6b are provided in the lens holder 6. Conversely, the lens holder 6 may include a right pivot shaft and a left pivot shaft, and the projection lens 5 may include a straight shaft bearing and a left tree bearing. In the exemplary embodiment above, as shown in Fig. 8, the hinge 5d is formed to be separated from the projection lens 5 and is attached to the coupling portion 5c. However, the hinge 5d can be integrally molded as part of the projection lens 5. With this configuration, the number of components can be reduced. In the case where the coupling portion 5c and the hinge 5d are provided so that they can be separated from each other as in the exemplary embodiment, the molding of the individual elements is facilitated. In the exemplary embodiment above, the housing 2 includes the pair of left fixing portions 2d and the pair of right fixing portions 2e. However, the positions, the dimensions and the number of left fixing parts 2d and right fixing parts 2e may be set as appropriate according to the vehicle specifications to which the fog lamp 1 is attached. [0073] In the example of In the above embodiment, the fog lamp 1 is given as an example of a lighting device. However, the invention can be applied to various lighting devices each having a projection lens in a lamp chamber defined by a housing and a transparent cover, each lighting device requiring the adjustment of the optical axis of the lamp. projection lens. 20
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. A vehicle lighting device (1) characterized by comprising: a light source (7b) including a light emitting surface (7b1); a projection lens (5) which faces the light emitting surface (7b1) and which is arranged such that at least a portion of the light emitted by the light source (7b) passes through the projection lens (5b); ); a control circuit board (7d) including a circuit configured to control the switching on and off of the light source (7b); and a housing (2) which supports the light source (7b) and the control circuit board (7d) and which defines a portion of a lamp chamber (4) which contains the projection lens (5), wherein a first direction (Ni) which is the normal direction with respect to the light emitting surface (7b) intersects a second direction (N2) which is the normal direction with respect to the main surface (7d1) of the control circuit (7d).
    [0002]
    2. Lighting device (1) according to claim 1, wherein the first direction (Ni) is orthogonal to the second direction (N2).
    [0003]
    3. Illumination device (1) according to any one of claims 1 or 2, wherein the housing (2) comprises a fixing portion (2a1) to which is attached a transparent cover (3), the transparent cover (3) and the housing (2) defining the lamp chamber (4), and the fixing portion (2a1) obliquely intersects the main surface (7d1) of the control circuit board (7d), seen in the second direction (N2).
    [0004]
    The lighting device (1) according to any one of claims 1 to 3, wherein the housing (2) is a single metal element which is integrally molded with a plurality of radiator fins (2c). and the housing (2) is provided with a ventilation part (2f) which is in communication with the lamp chamber (4).
    [0005]
    The lighting device (1) according to any one of claims 1 to 3, further comprising: a ventilation cover (10), wherein the housing (2) is provided with a ventilation portion (2f ) which is in communication with the lamp chamber (4) and which defines an air flow passage aperture opening towards the opposite side of the housing (2) with respect to the lamp chamber (4), and 10 ventilation cover (10) covers the ventilation part (2f).
    [0006]
    6. Lighting device (1) according to any one of claims 1 to 5, further comprising a support (6), which holds the projection lens (5), the position of the support (6) being fixed relative at the light source (7b); a pivot shaft (5a, 5b) which is provided in one of the projection lens (5) and the support (6) and which extends in a direction (A) intersecting the optical axis (B) of the projection lens (5); a shaft bearing (6a, 6b) which is provided in the other one of the projection lens (5) and the support (6) and which holds the pivot shaft (5a, 5b); and a sighting mechanism (5d, 9) which is configured to rotate the projection lens (5) about the pivot shaft (5a, 5b) relative to the support (6).
    [0007]
    The lighting device (1) according to claim 6, wherein the aiming mechanism (5d, 9) comprises a screw (9) including a portion operable from outside the housing for rotation, and a hinge ( 5d) which is configured to convert the rotation of the screw (9) into a force rotating the projection lens (5) about the pivot shaft (5a, 5b), the screw (9) extends through a portion of the housing (2), and the main surface (7d1) of the control circuit board (7d) faces a portion of the screw (9). 3024897 24
    [0008]
    8. Lighting device (1) according to claim 7, wherein the hinge (5d) is an integral part of the projection lens (5).
    [0009]
    9. Lighting device according to any one of claims 7 to 8, wherein the housing (2) has a contour portion having a circular shape, seen in the first direction (Ni), a passage (2g) and a ventilation section (2f) is formed in the housing (2), a supply line (8e) configured to supply energy to the circuit passes through the passage (2g), the ventilation section (2f) is communication with the lamp chamber (4), and the screw (9) extends so as to pass through the housing (2) between the passage (2g) and the ventilation portion (2f).
    类似技术:
    公开号 | 公开日 | 专利标题
    CA2810385C|2018-04-10|Optical module of an illuminating and/or signalling device of a motor vehicle
    FR3024897A1|2016-02-19|VEHICLE LIGHTING DEVICE
    CA2810700C|2017-01-17|Optical module of an illuminating and/or signalling device of a motor vehicle
    FR2853717A1|2004-10-15|VEHICLE HEADLIGHT AND APPARATUS FOR LIGHTING CIRCUIT
    FR3031705A1|2016-07-22|BLINKER
    FR3037379B1|2019-06-28|LIGHTING DEVICE FOR VEHICLE
    EP3222910B1|2021-04-28|Optical module for lighting and/or signalling device of a motor vehicle
    FR2858044A1|2005-01-28|Light e.g. headlight, for e.g. automobile, has photo-emissive unit to emit light from region having linear limit, and lens to project shape of light region for forming line of cut that forms limit between bright and dark regions
    FR2889290A1|2007-02-02|Vehicle headlamp for forming low-beam light distribution pattern, has light source units each with resin shade fastened to metal bracket by fastening screw, where shade has rear end part made of metal and fastening shade to bracket
    FR2913753A1|2008-09-19|LAMP FOR VEHICLE
    FR2858043A1|2005-01-28|Light e.g. headlight for vehicle e.g. automobile, has semiconductor light emitting unit to emit light from fixed lighting region and support unit to adjust center of region on fixed position with respect to reference unit
    EP3093557B1|2021-08-25|Low & high beam bi-functional lighting module for motor vehicle
    FR2920516A1|2009-03-06|Headlight for vehicle, has LED arranged on substrate of light source module, and driving unit rotating heat sink in horizontal direction, where light emitting surface of LED is displaced on focusing surface of lens during rotation of sink
    FR3050253A1|2017-10-20|VEHICLE FIRE AND VEHICLE COMPRISING THE SAME
    EP2888130A1|2015-07-01|Lighting module comprising a control device detachably held on a support
    FR3069906A1|2019-02-08|AUTOMOBILE HEADLIGHT
    FR2998034A1|2014-05-16|LIGHTING MODULE WITH UNIT CARD AND DISTINCTIVE DISSIPATORS
    FR2964723A1|2012-03-16|Optical module for lighting and signaling device such as headlight type lighting device, of motor vehicle, has reflectors that are formed on part equipped with cooling opening for circulation of cooling air
    EP2740993A1|2014-06-11|Light-emitting device for a motor vehicle headlight and headlight provided with said device
    FR3062458A1|2018-08-03|LIGHT BEAM PROJECTION MODULE FOR LIGHT EMITTING DEVICE OF MOTOR VEHICLE
    FR3075929A1|2019-06-28|LUMINOUS MODULE FOR VEHICLE COMPRISING A VENTILATION DEVICE HAVING TWO HEAT DISSIPATING DEVICES
    FR3061541A1|2018-07-06|IMPROVED LIGHT TRANSMIT MODULE FOR MOTOR VEHICLE
    EP3597986B1|2021-09-01|Lighting device with floating module
    EP3301351A1|2018-04-04|Integral mounting for luminous device with micro-mirror array
    FR2964724A1|2012-03-16|Optical module for lighting and signaling device e.g. headlight type light projector, of motor vehicle, has folding element fixed in module in motionless manner with respect to light source, where folding element is made by metal piece
    同族专利:
    公开号 | 公开日
    JP6452989B2|2019-01-16|
    US20180119913A1|2018-05-03|
    US10302269B2|2019-05-28|
    US9897272B2|2018-02-20|
    FR3024897B1|2021-05-14|
    JP2016042428A|2016-03-31|
    US20160047519A1|2016-02-18|
    DE102015215696A1|2016-02-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6161910A|1999-12-14|2000-12-19|Aerospace Lighting Corporation|LED reading light|
    US7738235B2|2006-07-31|2010-06-15|B/E Aerospace, Inc.|LED light apparatus|
    WO2008119392A1|2007-04-03|2008-10-09|Osram Gesellschaft mit beschränkter Haftung|Semiconductor light module|
    US8698418B2|2007-10-12|2014-04-15|Truck-Lite Co., Llc|Lamp assembly utilizing light emitting diodes including hybrid current regulator system|
    JP2010170751A|2009-01-21|2010-08-05|Stanley Electric Co Ltd|Breathing structure for vehicular device|
    DE112010002251T5|2009-06-03|2013-01-17|Material Werks, Llc|Lamp assembly and method of manufacture|
    FR2949841B1|2009-09-04|2011-12-09|Valeo Vision Sas|OPTICAL MODULE FOR A MOTOR VEHICLE PROJECTOR EQUIPPED WITH AN ELECTRICAL CONNECTING MEMBER WITH REMOTE ORGANS|
    JP5401273B2|2009-11-20|2014-01-29|スタンレー電気株式会社|Vehicle lighting|
    WO2011100972A1|2010-02-16|2011-08-25|Martin Professional A/S|Illumination device with interlocked yoke shell parts|
    DE112010005720T5|2010-07-05|2013-05-23|Mitsubishi Electric Corp.|Light source ballast for headlights|
    JP5243505B2|2010-09-13|2013-07-24|株式会社日本自動車部品総合研究所|Vehicle headlamp|
    JP2012064516A|2010-09-17|2012-03-29|Faltec Co Ltd|Vehicle headlight|
    JP5646264B2|2010-09-28|2014-12-24|株式会社小糸製作所|Vehicle lighting|
    JP5706701B2|2011-02-03|2015-04-22|株式会社小糸製作所|Vehicle headlamp|
    WO2013071972A1|2011-11-17|2013-05-23|Osram Gmbh|Led light source module|
    JP6037619B2|2012-01-25|2016-12-07|株式会社小糸製作所|Light emitting module and vehicle lamp|
    JP6072415B2|2012-02-01|2017-02-01|株式会社小糸製作所|Vehicle lighting|
    FR2993632B1|2012-07-19|2018-07-13|Valeo Vision Belgique|DEVICE FOR TRANSMITTING A LIGHT BEAM AND PROJECTOR, IN PARTICULAR A MOTOR VEHICLE, COMPRISING SAID DEVICE|
    JP5948701B2|2012-07-25|2016-07-06|パナソニックＩｐマネジメント株式会社|Vehicle headlamp|
    FR2994788B1|2012-08-27|2016-09-16|Valeo Vision|Lighting and / or signaling device for a vehicle comprising a lighting module with a control device removably maintained|
    JP6142463B2|2013-02-22|2017-06-07|スタンレー電気株式会社|Vehicle headlamps and projection lenses|JP6765241B2|2016-07-13|2020-10-07|株式会社小糸製作所|Lighting device for vehicles|
    US10351046B2|2017-12-08|2019-07-16|Asyst Technologies, Llc|Lamp adjuster device and method of use|
    EP3604906A1|2018-07-31|2020-02-05|Valeo Iluminacion|Method for manufacturing an automotive luminous device|
    USD928997S1|2019-08-28|2021-08-24|Nordic Lights Oy|Working light|
    法律状态:
    2016-07-12| PLFP| Fee payment|Year of fee payment: 2 |
    2017-07-07| PLFP| Fee payment|Year of fee payment: 3 |
    2018-07-13| PLFP| Fee payment|Year of fee payment: 4 |
    2018-08-03| PLSC| Search report ready|Effective date: 20180803 |
    2020-06-25| PLFP| Fee payment|Year of fee payment: 6 |
    2021-06-25| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2014165980A|JP6452989B2|2014-08-18|2014-08-18|Vehicle lighting device|
    [返回顶部]