Vehicle lighting device and vehicle lamp fitting

Abstract

To provide a vehicle lighting device which can achieve downsizing of a portion, which is exposed to the outside of a housing, of the vehicle lighting device and improvement of heat radiation performance, and to provide a vehicle lamp fitting.SOLUTION: A vehicle lighting device according to an embodiment includes: a socket; a light emitting module provided at an end on one side of the socket and having light emitting elements; and a power supply part having a first connection part electrically connected to the light emitting elements. The first connection part is drawn from the end on the one side of the socket.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] An embodiment of the present invention relates to a vehicle lighting device and a vehicle lamp. [Background technology]

[0002] From the viewpoint of energy saving and long life, vehicle lighting devices equipped with light emitting elements such as light emitting diodes are becoming more and more popular instead of vehicle lighting devices equipped with lamps having filaments. Such vehicle lighting devices are detachably attached to a housing provided in a vehicle lamp.

[0003] Therefore, the vehicle lighting device includes a socket that is detachably attached to the housing of the vehicle lamp, a light-emitting module having a light-emitting element provided on one end side of the socket, and a terminal whose one end side is electrically connected to the light-emitting element. The other end side of the terminal is exposed on the other end side of the socket. A connector that is electrically connected to a lighting circuit or the like is detachably connected to the terminal exposed on the other end side of the socket.

[0004] Here, the vehicle lamp provided with the vehicle lighting device is mainly used outdoors. Therefore, the connector connected to the terminal exposed on the other end side of the socket needs to have a waterproof structure. However, the connector having the waterproof structure is large in size, which may make it difficult to arrange the vehicle lighting device. Furthermore, when a plurality of vehicle lighting devices are provided in the vehicle lamp, a wiring harness is electrically connected to each of the plurality of connectors. Therefore, it may become even more difficult to arrange the vehicle lighting device.

[0005] In recent years, there has been a demand for vehicle lighting devices with higher luminous flux, and the current flowing through the light-emitting element tends to increase. When the current flowing through the light-emitting element increases, the temperature of the light-emitting element tends to increase. In this case, if the temperature of the light-emitting element exceeds the maximum junction temperature, the function of the light-emitting element may be degraded or the light-emitting element may break down. Therefore, there has been a demand for the development of technology that can reduce the size of the portion of the vehicle lighting device that is exposed to the outside of the housing and improve the heat dissipation performance. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2013-247061 A Summary of the Invention [Problem to be solved by the invention]

[0007] The problem that the present invention aims to solve is to provide a vehicle lighting device and a vehicle lamp that can reduce the size of the part of the vehicle lighting device that is exposed to the outside of the housing and improve heat dissipation properties. [Means for solving the problem]

[0008] A vehicle lighting device according to an embodiment includes a socket, a light-emitting module provided at one end of the socket and having a light-emitting element, and a power supply unit having a first connection portion electrically connected to the light-emitting element. The first connection portion is drawn out from the one end of the socket. Effect of the Invention

[0009] According to the embodiments of the present invention, it is possible to provide a vehicle lighting device and a vehicle lamp that can reduce the size of the portion of the vehicle lighting device that is exposed to the outside of the housing and improve heat dissipation. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic perspective view illustrating a vehicle lighting device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a schematic exploded view of the vehicle lighting device. [Diagram 3] 2 is a cross-sectional view of the vehicle lighting device taken along line AA in FIG. 1. [Figure 4] 1 is a schematic partial cross-sectional view illustrating a vehicle lamp to which a vehicle lighting device according to a comparative example is attached. [Diagram 5] 13 is a schematic perspective view illustrating a vehicle lighting device according to another embodiment. FIG. [Figure 6] 6 is a schematic plan view of the vehicle lighting device in FIG. 5 as viewed in a direction along the central axis. [Figure 7] 1 is a schematic partial cross-sectional view illustrating a vehicle lamp 100 to which a vehicle lighting device according to the present embodiment is attached. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and detailed description thereof will be omitted as appropriate.

[0012] (Vehicle lighting device) The vehicle lighting device 1 according to the present embodiment can be installed in, for example, an automobile or a railroad car. Examples of the vehicle lighting device 1 installed in an automobile include a front combination light (for example, a combination of a daylight running lamp (DRL), a position lamp, a turn signal lamp, etc.) and a rear combination light (for example, a combination of a stop lamp, a tail lamp, a turn signal lamp, a back lamp, a fog lamp, etc.). However, the uses of the vehicle lighting device 1 are not limited to these.

[0013] FIG. 1 is a schematic perspective view illustrating a vehicle lighting device 1 according to the present embodiment. FIG. 2 is a schematic exploded view of the vehicle lighting device 1. As shown in FIG. FIG. 3 is a cross-sectional view of the vehicle lighting device 1 taken along line AA in FIG. As shown in FIGS. 1 to 3, a vehicle lighting device 1 includes a socket 10, a light emitting module 20, a heat transfer section 30, and a power supply section 40, for example.

[0014] The socket 10 has, for example, a mounting portion 11, a bayonet 12, a flange 13, and heat dissipation fins 14. The mounting portion 11 is provided, for example, on the surface of the flange 13 opposite to the side on which the heat dissipation fins 14 are provided. The outer shape of the mounting portion 11 may be columnar. The outer shape of the mounting portion 11 is, for example, cylindrical. The mounting portion 11 has a recess 11a (corresponding to an example of a first recess) that opens to the end opposite the flange 13 side.

[0015] The bayonet 12 is provided, for example, on a side surface of the mounting portion 11. The bayonet 12 protrudes toward the outside of the vehicle lighting device 1. The bayonet 12 faces the flange 13. A plurality of bayonets 12 may be provided. The bayonet 12 is used when mounting the vehicle lighting device 1, for example, to a housing 101 of a vehicle lamp 100 described later. The bayonet 12 may be used for a twist lock.

[0016] The flange 13 has a plate shape. The flange 13 has, for example, a substantially circular plate shape. A side surface of the flange 13 is located outward of the vehicle lighting device 1 from a side surface of the bayonet 12.

[0017] The heat dissipating fin 14 is provided, for example, on the side of the flange 13 opposite to the mounting portion 11 side. At least one heat dissipating fin 14 can be provided. For example, as shown in Figs. 1 to 3, a plurality of heat dissipating fins 14 can be provided on the socket 10. The plurality of heat dissipating fins 14 can be arranged side by side in a predetermined direction. The heat dissipating fin 14 has, for example, a plate-like or cylindrical shape.

[0018] The socket 10 has a function of holding the light-emitting module 20 and a function of transferring heat generated in the light-emitting module 20 to the outside. Therefore, the socket 10 is preferably made of a material with high thermal conductivity. The socket 10 can be made of a metal such as an aluminum alloy, for example.

[0019] The socket 10 can also be made of, for example, a highly thermally conductive resin. The highly thermally conductive resin is, for example, a resin such as PET (Polyethylene terephthalate) or Nylon mixed with a filler using carbon or aluminum oxide. If the socket 10 contains a highly thermally conductive resin, the heat generated in the light-emitting module 20 can be efficiently dissipated. Also, the weight of the socket 10 can be reduced. The socket 10 illustrated in FIGS. 1 to 3 is made of a highly thermally conductive resin.

[0020] The light-emitting module 20 is provided on one end of the socket 10. For example, the light-emitting module 20 is provided on the end of the mounting portion 11 opposite to the flange 13 side. For example, as shown in Figs. 2 and 3, the light-emitting module 20 is provided on the bottom surface 11a1 of the recess 11a via the heat transfer portion 30. As will be described later, the heat transfer portion 30 may be omitted. When the heat transfer portion 30 is omitted, the light-emitting module 20 is provided on, for example, the bottom surface 11a1 of the recess 11a.

[0021] In this case, the light-emitting module 20 can be adhered onto the heat transfer part 30 or onto the bottom surface 11a1 of the recess 11a using an adhesive with high thermal conductivity. The light-emitting module 20 can also be attached to the socket 10 using a fastening member such as a screw. In this case, a layer containing thermally conductive grease (heat dissipating grease) can be provided between the light-emitting module 20 and the heat transfer part 30, or between the light-emitting module 20 and the bottom surface 11a1 of the recess 11a.

[0022] As shown in FIGS. 1 and 2, a light emitting module 20 includes, for example, a substrate 21, a light emitting element 22, and a circuit element 23.

[0023] The substrate 21 has a plate shape. The planar shape of the substrate 21 (the shape when viewed from a direction along the central axis 1a of the vehicle lighting device 1) is, for example, substantially rectangular. The substrate 21 can be formed from, for example, an inorganic material such as ceramics (for example, aluminum oxide or aluminum nitride) or an organic material such as paper phenol or glass epoxy. The substrate 21 may also be a metal core substrate in which the surface of a metal plate is covered with an insulating material. The substrate 21 may have a single-layer structure or a multi-layer structure.

[0024] The substrate 21 also has a wiring pattern 21a. The wiring pattern 21a is provided on the substrate 21 (the surface opposite to the socket 10 side). The wiring pattern 21a is formed from, for example, a material containing silver as a main component or a material containing copper as a main component. In addition, a covering portion may be provided to cover the wiring pattern 21a, a film resistor described later, etc. The covering portion may include, for example, a glass material.

[0025] The light-emitting element 22 is provided on the substrate 21. The light-emitting element 22 is electrically connected to the wiring pattern 21a. At least one light-emitting element 22 can be provided. The vehicle lighting device 1 (light-emitting module 20) illustrated in Figs. 1 and 2 is provided with a plurality of light-emitting elements 22. When a plurality of light-emitting elements 22 are provided, the plurality of light-emitting elements 22 can be connected in series.

[0026] The light emitting elements 22 may be, for example, light emitting diodes, organic light emitting diodes, laser diodes, or the like.

[0027] The light emitting element 22 may be a chip-shaped light emitting element, a surface mount type light emitting element such as a PLCC (Plastic Leaded Chip Carrier) type, or a light emitting element having a lead wire such as a bullet type. The light emitting element 22 illustrated in Fig. 1 and Fig. 2 is a surface mount type light emitting element.

[0028] A surface mount type light emitting element or a light emitting element having a lead wire can be electrically connected to a mounting pad of the wiring pattern 21a. A chip type light emitting element can be mounted on the wiring pattern 21a by COB (Chip On Board). The chip type light emitting element may be any of an upper electrode type light emitting element, a top and bottom electrode type light emitting element, and a flip chip type light emitting element.

[0029] In addition, in the case of a chip-shaped light-emitting element, a frame-shaped member surrounding the light-emitting element, a sealing portion provided inside the frame-shaped member and covering the chip-shaped light-emitting element, and optical elements such as a lens provided on the sealing portion can be provided.

[0030] The circuit element 23 can be a passive element or an active element used to configure a light-emitting circuit having the light-emitting element 22. The circuit element 23 is provided on the substrate 21. The circuit element 23 is provided, for example, in the periphery of the light-emitting element 22 and is electrically connected to the wiring pattern 21a. The circuit element 23 is electrically connected to the light-emitting element 22 via the wiring pattern 21a.

[0031] The circuit elements 23 illustrated in FIG. 1 and FIG. 2 include a protection element 23a, a resistor 23b, and a control element 23c. However, the type of the circuit element 23 is not limited to the exemplified ones, and can be changed appropriately depending on the configuration of the light-emitting circuit having the light-emitting element 22. For example, the circuit element 23 may be a capacitor, a positive characteristic thermistor, a negative characteristic thermistor, an inductor, a surge absorber, a varistor, a transistor, an integrated circuit, a computing element, etc., in addition to those mentioned above.

[0032] The protective element 23a is provided, for example, to prevent a reverse voltage from being applied to the light-emitting element 22 and to prevent pulse noise from the reverse direction from being applied to the light-emitting element 22. The protective element 23a may be, for example, a diode. The protective element 23a illustrated in Figs. 1 and 2 is a surface-mounted diode.

[0033] The resistor 23b may be, for example, a surface mount resistor, a resistor having leads (metal oxide film resistor), a film resistor formed by using a screen printing method, etc. The resistor 23b illustrated in Fig. 1 and Fig. 2 is a film resistor.

[0034] Here, since there is variation in the forward voltage characteristics of the light-emitting element 22, when the voltage applied between the anode terminal and the ground terminal is constant, variation occurs in the brightness (luminous flux, luminance, luminous intensity, illuminance) of the light irradiated from the light-emitting element 22. Therefore, in order to keep the brightness of the light irradiated from the light-emitting element 22 within a predetermined range, the value of the current flowing through the light-emitting element 22 is controlled to be within a predetermined range by the resistor 23b connected in series to the light-emitting element 22. In this case, the resistance value of the resistor 23b is changed to keep the value of the current flowing through the light-emitting element 22 within the predetermined range.

[0035] When the resistor 23b is a surface mount resistor or a resistor with leads, the resistor 23b having an appropriate resistance value is selected according to the forward voltage characteristics of the light emitting element 22. When the resistor 23b is a film resistor, the resistance value can be increased by removing a part of the resistor 23b. For example, by irradiating a laser beam onto a film resistor, a part of the film resistor can be easily removed. The number, arrangement, size, etc. of the resistors 23b are not limited to those exemplified, and can be appropriately changed according to the number and specifications of the light emitting elements 22.

[0036] The control element 23c is provided, for example, to switch the voltage applied to the light-emitting element 22 or to perform temperature derating. However, the functions and uses of the control element 23c are not limited to those exemplified. The control element 23c can be, for example, a transistor or an integrated circuit. The control element 23c exemplified in FIG. 1 and FIG. 2 is a surface-mounted integrated circuit.

[0037] The heat transfer section 30 has a plate shape and is provided between the socket 10 and the light emitting module 20 (substrate 21). As shown in Fig. 2 and Fig. 3, the heat transfer section 30 can be adhered to the bottom surface 11a1 of the recess 11a using, for example, an adhesive with high thermal conductivity. In addition, the heat transfer section 30 can be adhered to the inside of a recess provided in the bottom surface 11a1 of the recess 11a, the heat transfer section 30 can be attached to the inside of the recess via thermal conductive grease (heat dissipation grease), or the heat transfer section 30 can be embedded in the inside of the recess by insert molding.

[0038] The heat transfer unit 30 is made of a material with high thermal conductivity. For example, the heat transfer unit 30 is made of a metal such as aluminum, an aluminum alloy, copper, or a copper alloy. Note that if the socket 10 is made of a metal or if the amount of heat generated in the light-emitting module 20 is small, the heat transfer unit 30 can be omitted.

[0039] Here, the vehicle lighting device 1 is electrically connected to a lighting circuit or the like provided outside the vehicle lighting device 1. FIG. 4 is a schematic partial cross-sectional view illustrating a vehicle lamp 300 to which a vehicle lighting device 200 according to a comparative example is attached. As shown in Fig. 4, the vehicle lighting device 200 is detachably provided in a housing 101 provided in a vehicle lamp 300. A terminal electrically connected to a light emitting module is provided in a socket 210 of the vehicle lighting device 200. The terminal is exposed from an end of the socket 210, and a connector 211 electrically connected to a lighting circuit or the like is detachably connected to the terminal exposed from the end of the socket 210. In this case, since the vehicle lamp 300 provided with the vehicle lighting device 200 is mainly used outdoors, the connector 211 needs to have a waterproof structure.

[0040] 4, the connector 211 having a waterproof structure is large in size, and therefore requires a large space near the housing 101. Therefore, depending on the installation environment of the vehicle lamp 300, it may be difficult to arrange the vehicle lighting device 200.

[0041] 4, a plurality of vehicle lighting devices 200 may be attached to one housing 101. Since a connector 211 electrically connected to a wiring harness 212 is connected to each of the vehicle lighting devices 200, a larger space is required near the housing 101. This makes the arrangement of the vehicle lighting device 200 even more difficult.

[0042] In recent years, there has been a demand for a vehicle lighting device 200 with a higher luminous flux, and there is a tendency for the current flowing through the light-emitting element 22 to increase. When the current flowing through the light-emitting element 22 increases, the temperature of the light-emitting element 22 tends to increase. In this case, if the temperature of the light-emitting element 22 exceeds the maximum junction temperature, the function of the light-emitting element 22 may be degraded or the light-emitting element 22 may break down.

[0043] Therefore, as shown in FIGS. 1 to 3, the vehicle lighting device 1 is provided with a power supply unit 40. As shown in FIG. The power supply unit 40 has, for example, a connection unit 40a (corresponding to an example of a second connection unit), a connection unit 40b (corresponding to an example of a first connection unit), and a wiring 40c. The connection portion 40a is provided on the substrate 21. The connection portion 40a is electrically connected to the light-emitting element 22 via the wiring pattern 21a provided on the substrate 21. That is, the connection portion 40a is electrically connected to a light-emitting circuit provided in the light-emitting module 20. The connection portion 40a can be soldered to the wiring pattern 21a, for example. The connection portion 40a can be a board connector (also referred to as a board-in connector, etc.), for example.

[0044] The connection part 40b is electrically connected to the connection part 40a via a flexible wiring 40c. The connection part 40b can be, for example, a relay connector. The connection part 40b is provided outside the socket 10 (mounting part 11) at the end side where the light emitting module 20 is provided. For example, as shown in FIG. 1 and FIG. 3, in a direction along the central axis 1a of the vehicle lighting device 1, the connection part 40b can be separated from the end part of the socket 10 (mounting part 11) where the light emitting module 20 is provided. Also, in a direction intersecting the central axis 1a of the vehicle lighting device 1, the connection part 40b can be separated from the side surface of the socket 10 (mounting part 11). That is, the connection part 40b is electrically connected to the light emitting element 22 and is drawn out from one end side of the socket 10. In this case, since the flexible wiring 40c is provided between the connection part 40a and the connection part 40b, the position of the connection part 40b can be set arbitrarily.

[0045] 1 to 3, the connection portion 40a and the connection portion 40b have two terminals, and two wirings 40c are provided, but the number of terminals and wirings 40c is not limited to the illustrated example. For example, one light-emitting module 20 may be provided with a light-emitting element 22 for a stop lamp and a light-emitting element 22 for a tail lamp. In such a case, the number of terminals and wirings 40c may be three.

[0046] Fig. 5 is a schematic perspective view illustrating a vehicle lighting device 51 according to another embodiment. Fig. 6 is a schematic plan view of the vehicle lighting device 51 in Fig. 5 as viewed from a direction along a central axis 51a. As shown in FIGS. 5 and 6, a vehicle lighting device 51 includes a socket 50, a light emitting module 20, a heat transfer section 30, and a power supply section 40, for example.

[0047] The socket 50 has, for example, a mounting portion 15, a bayonet 12, a flange 13, and heat dissipation fins 14. The mounting portion 15 has a columnar shape and has a recess 15a (corresponding to an example of a first recess) that opens at the end opposite to the flange 13 side. The recess 15a can be the same as the recess 11a described above. In addition, a protrusion 15b can be provided on the side of the mounting portion 15. The protrusion 15b protrudes toward the outside of the vehicle lighting device 1. The distance between the central axis 51a of the vehicle lighting device 51 and the outer surface of the protrusion 15b can be the same as the distance between the central axis 51a of the vehicle lighting device 51 and the outer surface of the bayonet 12, for example. The protrusion 15b may be the bayonet 12, for example.

[0048] Further, the protrusion 15b is provided with a recess 15b1 (corresponding to an example of a second recess). The recess 15b1 opens to the recess 15a. For example, the recess 15b1 opens to the inner wall of the recess 15a and to the end of the mounting portion 15 opposite to the flange 13 side. As shown in FIG. 5 and FIG. 6, when viewed from a direction along the central axis 51a of the vehicle lighting device 51, the recess 15b1 faces the power supply portion 40 (connection portion 40a). Therefore, the connection portion 40a, or the connection portion 40a and the wiring 40c, or the wiring 40c can be stored inside the recess 15b1. In the vehicle lighting device 51 illustrated in FIG. 5, the wiring 40c is stored inside the recess 15b1. In this way, the mounting portion 15 (recess 15a) can be made smaller, and thus the vehicle lighting device 51 can be made smaller. Furthermore, by storing the wiring 40c inside the recess 15b1, for example, when the wiring 40c is bent, it is possible to prevent excessive force from being applied to the wiring 40c and the connection portion 40a. Therefore, it is possible to improve the reliability of the electrical connection between the power supply unit 40 and the light-emitting module 20.

[0049] In this case, a hole penetrating between the inner wall and the outer wall of the mounting portion 15 may be provided, and the wiring 40c may be provided inside the hole. In this way, the configuration of the mounting portion 15 can be simplified. However, as described below, the mounting portion 15 is held by the housing 101 of the vehicle lamp 100. Therefore, it is preferable that the mounting portion 15 has a large rigidity. In this case, by providing a protrusion 15b having a recess 15b1, the rigidity of the mounting portion 15 can be increased and the application of excessive force to the connection portion 40a can be suppressed.

[0050] (Vehicle lighting fixtures) In one embodiment of the present invention, a vehicle lamp 100 can be provided that includes the vehicle lighting device 1. The above description of the vehicle lighting device 1 and modified versions of the vehicle lighting device 1 (for example, the vehicle lighting device 51, or a device in which a person skilled in the art appropriately adds, deletes, or modifies components and has the features of the present invention) can all be applied to the vehicle lamp 100.

[0051] In the following, as an example, a case where the vehicle lamp 100 is a rear combination light provided on an automobile will be described. However, the vehicle lamp 100 is not limited to a rear combination light provided on an automobile. The vehicle lamp 100 may be a vehicle lamp provided on an automobile, a railroad car, or the like. In addition, a case where two vehicle lighting devices 1 are provided on one housing 101 will be illustrated, but the number and arrangement of the vehicle lighting devices 1 can be changed as appropriate. The same applies to the case where the vehicle lighting device 51 is provided on the housing 101.

[0052] FIG. 7 is a schematic partial cross-sectional view illustrating a vehicle lamp 100 to which the vehicle lighting device 1 according to the present embodiment is attached. As shown in FIG. 7, a vehicle lamp 100 includes, for example, a vehicle lighting device 1, a housing 101, a cover 102, an optical element 103, and a seal member 104.

[0053] The mounting portion 11 of the vehicle lighting device 1 is attached to the housing 101. The housing 101 holds the mounting portion 11. The housing 101 is box-shaped with one end side open. The housing 101 can be formed from, for example, a resin that does not transmit light. The bottom surface of the housing 101 is provided with a mounting hole 101a into which the portion of the mounting portion 11 provided with the bayonet 12 is inserted. A recess is provided on the periphery of the mounting hole 101a into which the bayonet 12 provided on the mounting portion 11 is inserted. Note that, although the case where the mounting hole 101a is directly provided in the housing 101 has been exemplified, a mounting member having the mounting hole 101a may be provided in the housing 101.

[0054] The power supply unit 40 (connection unit 40b) of the vehicle lighting device 1 provided inside the housing 101 is electrically connected to the wiring harness 212 provided outside the housing 101. For example, inside the housing 101, the power supply unit 40 (connection unit 40b) of the vehicle lighting device 1 is electrically connected to the wiring member 101b. The wiring member 101b extends, for example, on the inner wall of the housing 101 and is exposed to the outside of the housing 101 at a desired position. In this case, the space between the wiring member 101b and the housing 101 is sealed so as to be liquid-tight. Also, the wiring member 101b may extend, for example, inside the wall of the housing 101 or may extend on the outer wall of the housing 101.

[0055] The wiring member 101b may be, for example, in the form of a plate (for example, a bus bar) or a film. The wiring member 101b may include a low-resistance metal such as copper, silver, or aluminum. The wiring member 101b may also be a wiring cable.

[0056] 3, a connector 101c connected to a connection portion 40b of the power supply unit 40 can be provided at an end of the wiring member 101b located inside the housing 101. As shown in Fig. 7, a connector 101d connected to a connector 212a of the wiring harness 212 can be provided at an end of the wiring member 101b located outside the housing 101. Note that an end of the wiring harness 212 may be provided inside the housing 101, and the connector 212a provided at the end of the wiring harness 212 may be connected to the connection portion 40b of the power supply unit 40.

[0057] When mounting the vehicle lighting device 1 to the vehicle lamp 100, the portion of the mounting part 11 on which the bayonet 12 is provided is inserted into the mounting hole 101a, and the vehicle lighting device 1 is rotated. Then, the bayonet 12 is held in the fitting portion provided on the periphery of the mounting hole 101a. This type of mounting method is called a twist lock.

[0058] The cover 102 is provided so as to cover the opening of the housing 101. The cover 102 can be made of a light-transmitting resin or the like. The cover 102 can also have a function such as a lens.

[0059] The optical element 103 is provided inside the housing 101. Light emitted from the vehicle lighting device 1 is incident on the optical element 103. The optical element 103 reflects, diffuses, guides, and collects the light emitted from the vehicle lighting device 1, and forms a predetermined light distribution pattern. For example, the optical element 103 illustrated in FIG. 7 is a reflector. In this case, the optical element 103 reflects the light emitted from the vehicle lighting device 1 so that a predetermined light distribution pattern is formed.

[0060] 1 to 3, the seal member 104 has an annular shape and surrounds the mounting portion 11 of the vehicle lighting device 1. The seal member 104 is sandwiched between the flange 13 and the housing 101. For example, the seal member 104 is made of an elastic material such as rubber or silicone resin.

[0061] If the sealing member 104 is provided, it is possible to seal the mounting hole 101a of the housing 101. Therefore, it is possible to prevent moisture in the atmosphere in which the vehicle lighting device 1 is provided from entering the inside of the housing 101.

[0062] As shown in Fig. 7, the connector 211 having a waterproof structure described in Fig. 4 is not connected to the vehicle lighting device 1 according to this embodiment. Therefore, the part of the vehicle lighting device 1 exposed to the outside of the housing 101 can be reduced in size. In addition, the connection position between the wiring harness 212 and the wiring member 101b can be changed arbitrarily. Therefore, it is not necessary to provide a large space near the housing 101.

[0063] In addition, since the connector 211 having a waterproof structure is not connected, the number of heat dissipation fins 14 and the surface area of ​​the heat dissipation fins 14 can be increased. Therefore, the heat dissipation performance of the vehicle lighting device 1 can be improved, and the luminous flux of the vehicle lighting device 1 can be increased.

[0064] Although some embodiments of the present invention have been illustrated above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, modifications, etc. can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims. In addition, the above-mentioned embodiments can be implemented in combination with each other.

[0065] Below, additional notes regarding the above-described embodiment are given.

[0066] (Appendix 1) Socket and; a light emitting module provided at one end side of the socket and having a light emitting element; a power supply portion having a first connection portion electrically connected to the light emitting element; Equipped with The first connection portion is extended from the one end side of the socket.

[0067] (Appendix 2) The light emitting module further includes a substrate on which the light emitting element is provided, The power supply unit includes: a second connection portion provided on the substrate and electrically connected to the light emitting element; a flexible wiring that electrically connects the first connection portion and the second connection portion; 2. The vehicle lighting device according to claim 1,

[0068] (Appendix 3) the second connection portion is a board connector, 3. The vehicle lighting device according to claim 2, wherein the second connection portion is electrically connected to the light-emitting element via a wiring pattern provided on the substrate.

[0069] (Appendix 4) The socket is A first recess that opens to the one end side; A protrusion provided on a side surface; a second recess provided in the protruding portion and opening into the first recess; having the substrate is provided inside the first recess, 4. The vehicle lighting device according to claim 2, wherein the second recess faces the second connection portion when viewed from a direction along a central axis of the vehicle lighting device.

[0070] (Appendix 5) A vehicle lighting device according to any one of appendix 1 to 4; A housing in which the vehicle lighting device is mounted; Equipped with A vehicle lamp in which a first connection portion of the vehicle lighting device provided inside the housing is electrically connected to a wiring harness provided outside the housing. [Explanation of symbols]

[0071] REFERENCE SIGNS LIST 1 vehicle lighting device, 1a central axis, 10 socket, 11 mounting portion, 12 bayonet, 13 flange, 14 heat dissipation fin, 20 light emitting module, 21 substrate, 22 light emitting element, 40 power supply portion, 40a connection portion, 40b connection portion, 40c wiring, 51 vehicle lighting device, 51a central axis, 100 vehicle lamp, 101 housing, 212 wiring harness

Claims

1. A socket; a light-emitting module provided on one end side of the socket and having a light-emitting element; a power supply portion having a first connection portion electrically connected to the light emitting element; Equipped with The first connection portion is extended from the one end of the socket.

2. The light emitting module further includes a substrate on which the light emitting element is provided, The power supply unit includes: a second connection portion provided on the substrate and electrically connected to the light emitting element; a flexible wiring that electrically connects the first connection portion and the second connection portion; 2. The vehicle lighting device according to claim 1, further comprising:

3. the second connection portion is a board connector, The vehicle lighting device according to claim 2 , wherein the second connection portion is electrically connected to the light emitting element via a wiring pattern provided on the substrate.

4. The socket is A first recess that opens to the one end side; A protrusion provided on a side surface; a second recess provided in the protruding portion and opening into the first recess; having the substrate is provided inside the first recess, The vehicle lighting device according to claim 2 or 3, wherein the second recess faces the second connection portion when viewed from a direction along a central axis of the vehicle lighting device.

5. The vehicle lighting device according to claim 1; A housing in which the vehicle lighting device is mounted; Equipped with A vehicle lamp, wherein a first connection portion of the vehicle lighting device provided inside the housing is electrically connected to a wiring harness provided outside the housing.

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