Vehicle lighting device and vehicle lamp fitting

Abstract

To provide a vehicle lighting device which can achieve downsizing of an electric connection portion with the outside 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 having a flange and an attachment part provided on one surface of the flange; a light emitting module provided at an end, which is opposite to the flange side, of the attachment part and having light emitting elements; and a power supply part in which a first end is electrically connected to the light emitting elements, and a second end is exposed from a side surface of the attachment part.SELECTED DRAWING: Figure 3

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 module. 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, a vehicle lamp provided with a vehicle lighting device is mainly used outdoors. Therefore, the connector needs to have a waterproof structure. However, a connector with a waterproof structure is large in size, which may make it difficult to arrange the vehicle lighting device. Furthermore, when a vehicle lamp is provided with a plurality of vehicle lighting devices, 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 electrical connection parts between the vehicle lighting device and the outside and improve the heat dissipation properties. [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] An object of the present invention is to provide a vehicle lighting device and a vehicle lamp that are capable of reducing the size of electrical connection parts with the outside and improving heat dissipation. [Means for solving the problem]

[0008] A vehicle lighting device according to an embodiment includes a socket having a flange and a mounting portion provided on one side of the flange; a light-emitting module having a light-emitting element provided at an end of the mounting portion opposite the flange side; and a power supply portion having a first end electrically connected to the light-emitting element and a second end exposed from a side of the mounting portion. 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 are capable of reducing the size of electrical connection parts with the outside and improving 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] 1 is a schematic partial cross-sectional view illustrating a vehicle lamp to which a vehicle lighting device according to an embodiment of the present invention 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 part 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 part 11 can be columnar. The outer shape of the mounting part 11 is, for example, cylindrical. The mounting part 11 has a recess 11a that opens to the end opposite to 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 the power supply unit 40, 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, for example, at the end of the mounting portion 11 opposite to the flange 13 side. For example, as shown in Fig. 1, 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, for example, on the bottom surface 11a1 of the recess 11a.

[0021] 1, the light-emitting module 20 can be attached to the socket 10 using a fastening member 24 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 section 30, or between the light-emitting module 20 and the bottom surface 11a1 of the recess 11a. The light emitting module 20 can also be attached onto the heat transfer part 30 or onto the bottom surface 11a1 of the recess 11a using an adhesive with high thermal conductivity.

[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 to 3 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 Figs. 1 to 3 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 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 Figs. 1 to 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] However, 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. A plurality of power supply units 40 may be provided. The vehicle lighting device 1 illustrated in Figs. 1 to 3 is provided with a pair of power supply units 40. However, the number of power supply units 40 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, three power supply units 40 may be provided.

[0044] In addition, Figures 1 to 3 show an example in which a pair of power supply units 40 are provided at positions that are rotationally symmetrical about the central axis 1a of the vehicle lighting device 1, but the number and arrangement of the power supply units 40 can be changed as appropriate depending on the application of the vehicle lighting device 1, etc.

[0045] Power supply unit 40 is provided inside socket 10 (mounting unit 11). For example, as shown in Fig. 1 to Fig. 3, socket 10 may be provided with recess 11b that opens to a side surface of mounting unit 11 and to an end of mounting unit 11 opposite to flange 13, and power supply unit 40 may be provided inside recess 11b. Also, power supply unit 40 and socket 10 may be integrally molded using, for example, an insert molding method.

[0046] One end (corresponding to an example of a first end) of the power supply unit 40 can be provided on the substrate 21 of the light emitting module 20. One end of the power supply unit 40 is soldered to, for example, the wiring pattern 21a provided on the substrate 21. That is, one end of the power supply unit 40 is electrically connected to the light emitting element 22. The other end (corresponding to an example of a second end) of the power supply unit 40 is exposed to the outside from the side surface of the socket 10 (mounting unit 11). In the direction along the central axis 1a of the vehicle lighting device 1, the other end of the power supply unit 40 is exposed to the outside of the mounting unit 11 from a region between the bayonet 12 and the flange 13 on the side surface of the mounting unit 11. That is, in the direction along the central axis 1a of the vehicle lighting device 1, the other end of the power supply unit 40 is located between the bayonet 12 and the flange 13.

[0047] As shown in FIG. 2 and FIG. 3, the power supply unit 40 has, for example, a portion 40a (corresponding to an example of a first portion), a portion 40b, and a portion 40c (corresponding to an example of a second portion). The portions 40a, 40b, and 40c can be integrally formed. The portions 40a, 40b, and 40c illustrated in FIG. 2 and FIG. 3 are plate-shaped. At least one of the portions 40a, 40b, and 40c may be linear. However, it is preferable that the portion 40c is plate-shaped. If the portion 40c is plate-shaped, the reliability of the electrical connection between the power supply unit 40 (the portion 40c) and the wiring member 101b provided in the housing 101 of the vehicle lamp 100 can be improved.

[0048] The portion 40a extends, for example, in a direction along the central axis 1a of the vehicle lighting device 1. One end of the portion 40a is soldered to a wiring pattern 21a provided on the substrate 21. That is, the portion 40a is electrically connected to the light-emitting element 22. The portion 40b is farther from the central axis 1a of the vehicle lighting device 1 than the portion 40a. That is, the portion 40b is located on the outer side of the vehicle lighting device 1 than the portion 40a. The portion 40b has a bent shape. One end side of the portion 40b extends toward the portion 40a and is connected to the other end side of the portion 40a. The other end side of the portion 40b extends, for example, in a direction along the central axis 1a of the vehicle lighting device 1. In the direction along the central axis 1a of the vehicle lighting device 1, the tip of the other end of the portion 40b is located between the bayonet 12 and the flange 13. In this case, the tip of the other end of the portion 40b can be located between the bayonet 12 and the seal member 104. The portion 40c is farther from the central axis 1a of the vehicle lighting device 1 than the portion 40b. In other words, the portion 40c is located more outside the vehicle lighting device 1 than the portion 40b. The portion 40c extends in a direction intersecting the central axis 1a of the vehicle lighting device 1. One end side of the portion 40c is connected to the other end side of the portion 40b. The other end side of the portion 40c is exposed to the outside from the side surface of the socket 10 (mounting portion 11).

[0049] Before the vehicle lighting device 1 is mounted in the housing 101, the angle between the surface of the portion 40c on the light emitting module 20 (substrate 21) side and the central axis 1a of the vehicle lighting device 1 can be an acute angle as shown in Fig. 2. In this way, when the vehicle lighting device 1 is mounted in the housing 101, the portion 40c can be elastically deformed. Therefore, the reliability of the electrical connection between the power supply unit 40 (portion 40c) and the wiring member 101b can be improved.

[0050] Furthermore, before the vehicle lighting device 1 is attached to the housing 101, the position of the tip of the portion 40c can be made to be outside the seal member 104 rather than the position where the seal member 104 contacts the housing 101. In this way, when the vehicle lighting device 1 is attached to the housing 101, the position of the tip of the portion 40c can be easily visually observed.

[0051] In addition, when the vehicle lighting device 1 is attached to the housing 101, the tip of the portion 40c can be located inside the seal member 104, relative to the position where the seal member 104 contacts the housing 101, or the position where the seal member 104 contacts the housing 101. In this way, when the vehicle lighting device 1 is attached to the housing 101, the tip of the portion 40c can be sandwiched between the seal member 104 and the housing 101. Therefore, the reliability of the electrical connection between the power supply unit 40 (portion 40c) and the wiring member 101b can be improved. In addition, if the tip of the portion 40c is located inside the seal member 104, relative to the position where the seal member 104 contacts the housing 101, the power supply unit 40 can be sealed by the seal member 104.

[0052] Here, when the vehicle lighting device 1 is mounted on the housing 101, a force is applied to the portion 40c. If the force applied to the portion 40c is directly transmitted to the portion 40a, the portion 40a may be deformed. If the portion 40a is deformed, damage may occur to the soldered portion between the power supply unit 40 (the portion 40a) and the wiring pattern 21a. In the power supply unit 40 according to the present embodiment, the portion 40b is provided between the portion 40c and the portion 40a, so that the force applied to the portion 40c can be prevented from being transmitted to the portion 40a. Therefore, the reliability of the electrical connection between the power supply unit 40 and the light emitting module 20 (the wiring pattern 21a) can be improved.

[0053] The power supply unit 40 can be made of a material having electrical conductivity and elasticity, such as phosphor bronze, copper alloy such as beryllium copper, stainless steel, or the like.

[0054] (Vehicle lighting fixtures) In one embodiment of the present invention, a vehicle lamp 100 can be provided that includes a vehicle lighting device 1. The above-mentioned description of the vehicle lighting device 1 and modified versions of the vehicle lighting device 1 (for example, 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.

[0055] In the following, as an example, a case where the vehicular lamp 100 is a front combination light installed in an automobile will be described. However, the vehicular lamp 100 is not limited to a front combination light installed in an automobile. The vehicular lamp 100 may be any vehicular lamp that is installed in an automobile, a railroad car, or the like.

[0056] FIG. 5 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. 5, the vehicle lamp 100 includes, for example, the vehicle lighting device 1, a housing 101, a cover 102, an optical element 103, and a seal member 104.

[0057] 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.

[0058] As shown in Figs. 3 and 5, a wiring member 101b to which the power supply unit 40 of the vehicle lighting device 1 is electrically connected is provided on the outer surface of the housing 101. One end of the wiring member 101b is provided around the mounting hole 101a. The wiring member 101b extends over the outer surface of the housing 101. The wiring member 101b is electrically connected to a lighting circuit or the like via a wiring harness 212 or the like. The wiring member 101b can be, for example, plate-shaped (for example, a bus bar) or film-shaped. The wiring member 101b can include a low-resistance metal such as copper, silver, or aluminum.

[0059] 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.

[0060] 3, the power supply unit 40 (portion 40c) of the vehicle lighting device 1 contacts the wiring member 101b around the mounting hole 101a. Therefore, by mounting the vehicle lighting device 1 to the vehicle lamp 100, the vehicle lighting device 1 can be electrically connected to a lighting circuit or the like.

[0061] 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.

[0062] 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. 5 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.

[0063] 3 and 5, 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.

[0064] Furthermore, as described above, when the vehicle lighting device 1 is attached to the housing 101, if the tip of the power supply unit 40 (part 40c) is located at a position where the seal member 104 contacts the housing 101 or is located inside the seal member 104 rather than at a position where the seal member 104 contacts the housing 101, the power supply unit 40 and the mounting hole 101a of the housing 101 can be sealed by the seal member 104. Therefore, it is possible to prevent moisture in the atmosphere in which the vehicle lighting device 1 is provided from adhering to the power supply unit 40 and the inside of the housing 101.

[0065] 4, the connector 211 having a waterproof structure is not connected to the vehicle lighting device 1 according to this embodiment. The connection position between the wiring harness 212 and the wiring member 101b can be changed arbitrarily. Therefore, the size of the electrical connection portion between the vehicle lighting device 1 and the outside can be reduced.

[0066] In addition, since the power supply unit 40 is connected to the light emitting module 20 (substrate 21), heat generated in the light emitting module 20 can be released to the outside from the wiring member 101b, etc., via the power supply unit 40. In addition, since the connector 211 having a waterproof structure is not connected, the number of heat dissipation fins 14 can be increased and the surface area of ​​the heat dissipation fins 14 can be increased. Therefore, the heat dissipation property of the vehicle lighting device 1 can be improved, and the luminous flux of the vehicle lighting device 1 can be increased.

[0067] 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.

[0068] Below, additional notes regarding the above-described embodiment are given.

[0069] (Appendix 1) A socket having a flange and a mounting portion provided on one surface of the flange; a light-emitting module provided at an end of the mounting portion opposite to the flange side, the light-emitting module having a light-emitting element; a power supply portion having a first end electrically connected to the light emitting element and a second end exposed from a side surface of the mounting portion; A vehicle lighting device comprising:

[0070] (Appendix 2) The socket further includes a bayonet provided on the side surface of the mounting portion, 2. The vehicle lighting device according to claim 1, wherein the second end of the power supply portion is located between the bayonet and the flange in a direction along a central axis of the vehicle lighting device.

[0071] (Appendix 3) the power supply portion has a first portion electrically connected to the light emitting element and a second portion exposed from the side surface of the mounting portion, 3. The vehicle lighting device according to claim 1, wherein the second portion extends in a direction intersecting a central axis of the vehicle lighting device.

[0072] (Appendix 4) 4. The vehicle lighting device according to claim 1, wherein the power supply unit is provided inside a recess that opens to the side surface of the mounting unit.

[0073] (Appendix 5) A vehicle lighting device according to any one of appendix 1 to 4; A seal member having an annular shape and surrounding a mounting portion of the vehicle lighting device; a housing to which the mounting portion of the vehicle lighting device is attached and which has a wiring member on an outer surface to which a power supply portion of the vehicle lighting device is electrically connected; Equipped with the seal member is sandwiched between a flange of the vehicle lighting device and the outer surface of the housing, A tip of the second end of the power supply unit is located at a position where the seal member contacts the outer surface of the housing, or The vehicle lamp, wherein a tip of the second end of the power supply portion is located inside the seal member with respect to a position where the seal member contacts the housing. [Explanation of symbols]

[0074] REFERENCE SIGNS LIST 1 vehicle lighting device, 1a central axis, 10 socket, 11 mounting portion, 11b recess, 12 bayonet, 13 flange, 14 heat dissipation fin, 20 light emitting module, 21 substrate, 21a wiring pattern, 22 light emitting element, 40 power supply portion, 40a portion, 40b portion, 40c portion, 100 vehicle lamp, 101 housing, 101b wiring member, 104 sealing member

Claims

1. A socket having a flange and a mounting portion provided on one surface of the flange; a light-emitting module provided at an end of the mounting portion opposite to the flange side and having a light-emitting element; a power supply portion having a first end electrically connected to the light emitting element and a second end exposed from a side surface of the mounting portion; A vehicle lighting device comprising:

2. The socket further includes a bayonet provided on the side surface of the mounting portion, 2 . The vehicle lighting device according to claim 1 , wherein the second end of the power supply portion is located between the bayonet and the flange in a direction along a central axis of the vehicle lighting device.

3. the power supply portion has a first portion electrically connected to the light emitting element and a second portion exposed from the side surface of the mounting portion, The vehicle lighting device according to claim 1 or 2, wherein the second portion extends in a direction intersecting a central axis of the vehicle lighting device.

4. The vehicle lighting device according to claim 1 , wherein the power supply unit is provided inside a recess that opens on the side surface of the mounting unit.

5. The vehicle lighting device according to claim 1; A seal member having an annular shape and surrounding a mounting portion of the vehicle lighting device; a housing to which the mounting portion of the vehicle lighting device is attached and which has a wiring member on an outer surface to which a power supply portion of the vehicle lighting device is electrically connected; Equipped with the seal member is sandwiched between a flange of the vehicle lighting device and the outer surface of the housing, a tip of a second end of the power supply unit is located at a position where the seal member contacts the outer surface of the housing; or A vehicle lamp, wherein a tip of the second end of the power supply portion is located inside the seal member with respect to a position where the seal member contacts the housing.

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