Vehicle lighting device and vehicle lamp fitting

Abstract

To provide a vehicle lighting device which enables improvement of waterproofness, and to provide a vehicle lamp fitting.SOLUTION: A vehicle lighting device according to an embodiment includes: a socket having a recessed part which is open at one end; a substrate provided in the recessed part; a light emitting element provided in the recessed part and on the substrate; and a first waterproof part having a flange part which is provided at the end where the recessed part is open of the socket, seals an opening of the recessed part in a fluid-tight manner, and is capable of transmitting light radiated from the light emitting element.SELECTED DRAWING: Figure 2

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 mounted in a housing provided in a vehicle lamp.

[0003] Here, a vehicle lamp provided with a vehicle lighting device is mainly used outdoors. Therefore, there is a risk that water generated by condensation of water vapor contained in the environment, rainwater, etc. may enter the inside of the vehicle lighting device. Since the vehicle lighting device is provided with a board on which light-emitting elements and circuit elements are mounted, if moisture enters the inside of the vehicle lighting device, the moisture may adhere to the board, etc. If moisture adheres to the board, etc., a short circuit may occur, causing the light-emitting element to not light up.

[0004] For this reason, a seal member is provided between the vehicle lighting device and a housing to which the vehicle lighting device is attached. The provision of the seal member can prevent moisture from entering the inside of the vehicle lighting device. However, since the seal member is made of rubber or the like, it deteriorates due to ultraviolet rays, environmental temperature, and the like. If the seal member cracks or hardens due to deterioration, moisture may enter the inside of the vehicle lighting device. Therefore, there has been a demand for the development of technology that can improve waterproofing. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2013-247061 A Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a vehicle lighting device and a vehicle lamp that can improve waterproofing. [Means for solving the problem]

[0007] A vehicle lighting device according to an embodiment comprises a socket having a recess opening at one end; a substrate provided inside the recess; a light-emitting element provided inside the recess and on the substrate; and a first waterproof portion provided at the end of the socket where the recess opens, sealing the opening of the recess liquid-tightly and having a flange portion that is transparent to light irradiated from the light-emitting element. Effect of the Invention

[0008] 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 improving waterproofing. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic perspective view illustrating a vehicle lighting device according to an embodiment of the present invention; [Diagram 2] 2 is a cross-sectional view of the vehicle lighting device taken along line AA in FIG. 1. [Diagram 3] 11A and 11B are schematic cross-sectional views illustrating a waterproof portion according to another embodiment. [Figure 4] 1 is a schematic partial cross-sectional view illustrating a vehicle lamp. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] 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.

[0011] (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.

[0012] FIG. 1 is a schematic perspective view illustrating a vehicle lighting device 1 according to the present embodiment. FIG. 2 is a cross-sectional view of the vehicle lighting device 1 taken along line AA in FIG. As shown in FIGS. 1 and 2, a vehicle lighting device 1 includes, for example, a socket 10, a light emitting module 20, a power supply unit 30, a heat transfer unit 40, and a waterproof unit 50 (corresponding to an example of a first waterproof unit).

[0013] The socket 10 has, for example, a mounting portion 11, a bayonet 12, a flange 13, heat dissipation fins 14, and a connector holder 15. The mounting part 11 is provided 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 may 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.

[0014] 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.

[0015] 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.

[0016] The heat dissipating fin 14 is provided on the side of the flange 13 opposite to the mounting portion 11. At least one heat dissipating fin 14 may be provided. For example, as shown in Figs. 1 and 2, a plurality of heat dissipating fins 14 may be provided on the socket 10. The plurality of heat dissipating fins 14 may be arranged side by side in a predetermined direction. The heat dissipating fin 14 has, for example, a plate or cylinder shape.

[0017] The connector holder 15 is provided on the opposite side of the flange 13 to the mounting portion 11. The connector holder 15 can be provided alongside the heat dissipation fins 14. The connector holder 15 has a cylindrical shape, and a connector 105 having a seal member 105a therein is inserted into the connector holder 15.

[0018] The socket 10 has a function of holding the light-emitting module 20 and the power supply unit 30, 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.

[0020] The light-emitting module 20 is provided on one end side of the socket 10. For example, the light-emitting module 20 is adhered onto the heat transfer part 40 inside the recess 11a. As described below, the heat transfer part 40 may be omitted. When the heat transfer part 40 is omitted, the light-emitting module 20 is adhered to, for example, the bottom surface 11a1 of the recess 11a.

[0021] As shown in FIGS. 1 and 2, the light emitting module 20 includes, for example, a substrate 21, a light emitting element 22, a frame portion 23, a sealing portion 24, and a circuit element 25.

[0022] The substrate 21 is provided inside the recess 11a. 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.

[0023] 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.

[0024] The light-emitting element 22 is provided inside the recess 11a and 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, 2, and 3 is provided with a plurality of light-emitting elements 22. When a plurality of light-emitting elements 22 is provided, the plurality of light-emitting elements 22 can be connected in series.

[0025] The light emitting elements 22 may be, for example, light emitting diodes, organic light emitting diodes, laser diodes, or the like.

[0026] 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 chip-shaped light emitting element. In this case, in consideration of miniaturization of the light emitting module 20 and thus the vehicle lighting device 1, it is preferable to use a chip-shaped light emitting element. In the following, as an example, a case where the light emitting element 22 is a chip-shaped light emitting element will be described.

[0027] The chip-shaped light-emitting element 22 can be mounted on the wiring pattern 21a by COB (Chip On Board). The chip-shaped light-emitting element 22 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.

[0028] The frame portion 23 is provided on the substrate 21. The frame portion 23 is bonded to the substrate 21. The frame portion 23 has a frame shape and surrounds the light-emitting element 22. The outline (outline of the planar shape) of the frame portion 23 when viewed from a direction along the central axis 1a of the vehicle lighting device 1 can be appropriately changed according to the required light distribution characteristics, luminance distribution, etc. For example, the outline of the planar shape of the frame portion 23 can be a circle, a rectangle, an ellipse, etc. The outline of the planar shape of the frame portion 23 illustrated in FIG. 1 is a circle.

[0029] The frame 23 is formed of, for example, a resin. The resin may be, for example, a thermoplastic resin such as polybutylene terephthalate (PBT), polycarbonate (PC), PET, nylon, polypropylene (PP), polyethylene (PE), or polystyrene (PS).

[0030] Frame 23 has a function of defining the formation range of sealing portion 24 and a function of a reflector. Therefore, frame 23 may contain titanium oxide particles or a white resin in order to improve reflectance.

[0031] The frame portion 23 may be omitted. In the case where the frame portion 23 is omitted, for example, a dome-shaped sealing portion 24 is provided on the substrate 21. However, if the frame portion 23 is provided, the utilization efficiency of the light emitted from the light-emitting element 22 can be improved. In addition, since the area where the sealing portion 24 is formed can be reduced, the light-emitting module 20 can be made smaller, and therefore the vehicle lighting device 1 can be made smaller.

[0032] The sealing portion 24 is provided inside the frame portion 23. The sealing portion 24 is provided so as to cover the area surrounded by the frame portion 23. The sealing portion 24 is provided so as to cover the light-emitting element 22. The sealing portion 24 contains a resin having light-transmitting properties. The sealing portion 24 is formed, for example, by filling the inside of the frame portion 23 with softened resin. The filling of the resin is performed, for example, using a dispenser or the like. The resin to be filled is, for example, silicone resin. The sealing portion 24 can also contain a phosphor.

[0033] The circuit element 25 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 25 is provided inside the recess 11a and on the substrate 21. The circuit element 25 is provided, for example, on the periphery of the frame portion 23 and is electrically connected to the wiring pattern 21a. The circuit element 25 is electrically connected to the light-emitting element 22 via the wiring pattern 21a.

[0034] The circuit elements 25 illustrated in FIG. 1 include a protection element 25a, a resistor 25b, and a control element 25c. However, the type of the circuit element 25 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 25 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.

[0035] The protective element 25a 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 25a may be, for example, a diode. The protective element 25a illustrated in FIG. 1 is a surface-mounted diode.

[0036] The resistor 25b 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 25b illustrated in FIG. 1 is a film resistor.

[0037] Here, since there is variation in the forward voltage characteristics of the light-emitting element 22, if 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 25b connected in series to the light-emitting element 22. In this case, the resistance value of the resistor 25b is changed to keep the value of the current flowing through the light-emitting element 22 within the predetermined range.

[0038] When the resistor 25b is a surface mount resistor or a resistor with leads, the resistor 25b having an appropriate resistance value is selected according to the forward voltage characteristics of the light emitting element 22. When the resistor 25b is a film resistor, the resistance value can be increased by removing a part of the resistor 25b. For example, by irradiating a laser beam onto a film resistor, a part of the film resistor can be easily removed. Note that the number, arrangement, size, etc. of the resistors 25b are not limited to those exemplified, and can be appropriately changed according to the number and specifications of the light emitting elements 22.

[0039] The control element 25c 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 25c are not limited to those exemplified. The control element 25c can be, for example, a transistor or an integrated circuit. The control element 25c exemplified in FIG. 1 is a surface-mounted integrated circuit.

[0040] The power supply unit 30 includes, for example, a plurality of power supply terminals 31 and a holding unit 32 . The power supply terminals 31 may be rod-shaped. One end of each of the power supply terminals 31 protrudes from the bottom surface 11a1 of the recess 11a. One end of each of the power supply terminals 31 is soldered to the wiring pattern 21a provided on the substrate 21. The other end of each of the power supply terminals 31 is exposed inside the hole of the connector holder 15. The connector 105 is fitted to the power supply terminals 31 exposed inside the hole of the connector holder 15. The power supply terminals 31 are formed of a metal such as a copper alloy. The shape, arrangement, material, and the like of the power supply terminals 31 are not limited to those exemplified, and may be changed as appropriate.

[0041] When the socket 10 is formed using, for example, a highly thermally conductive resin containing a filler using carbon, or a metal, the socket 10 becomes conductive. Therefore, the holding portion 32 is provided to insulate the multiple power supply terminals 31 from the conductive socket 10. Note that when the socket 10 is formed using an insulating highly thermally conductive resin (for example, a highly thermally conductive resin containing a filler using aluminum oxide), the holding portion 32 can be omitted. For example, the holding portion 32 can be pressed into a hole provided in the socket 10 or adhered to the inner wall of the hole.

[0042] The heat transfer section 40 has a plate shape and is provided between the socket 10 and the light emitting module 20 (substrate 21). As shown in Fig. 1 and Fig. 2, the heat transfer section 40 can be adhered to, for example, the bottom surface 11a1 of the recess 11a. The heat transfer section 40 can be adhered to the inside of a recess provided in the bottom surface 11a1 of the recess 11a, attached to the inside of the recess via thermally conductive grease (heat dissipating grease), or embedded in the inside of the recess by insert molding.

[0043] The heat transfer unit 40 is made of a material with high thermal conductivity. For example, the heat transfer unit 40 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 40 can be omitted.

[0044] As described below, the vehicle lighting device 1 is detachably mounted in a housing 101 provided in a vehicle lamp 100. In this case, since the vehicle lamp 100 provided with the vehicle lighting device 1 is mainly used outdoors, there is a risk that water generated by condensation of water vapor contained in the environment, rainwater, etc. may enter the inside of the vehicle lighting device 1 (inside the recess 11a of the socket 10). If the moisture that has entered the inside of the vehicle lighting device adheres to a substrate, etc., a short circuit may occur in a light-emitting circuit provided in the substrate 21, and the light-emitting element 22 may not light up.

[0045] In this case, as shown in FIG. 2 and FIG. 4 described later, a seal member 104 is provided between the vehicle lighting device 1 (flange 13) and the housing 101, so that intrusion of moisture into the inside of the vehicle lighting device 1 can be suppressed.

[0046] However, since the seal member 104 is made of rubber or the like, it is subject to deterioration due to ultraviolet rays, environmental temperature, etc. If the seal member 104 cracks or hardens due to deterioration, moisture may enter the interior of the vehicle lighting device.

[0047] As described later, the vehicle lamp 100 is provided with an optical element 103 that reflects light emitted from the vehicle lighting device 1. In recent years, instead of the optical element 103, or in cooperation with the optical element 103, it is desired to provide the vehicle lighting device 1 with an element that controls the light emitted from the light-emitting element 22.

[0048] Therefore, the vehicle lighting device 1 according to the present embodiment is provided with a waterproof section 50. The waterproof section 50 prevents moisture from entering the inside of the vehicle lighting device 1, and controls the light emitted from the light-emitting element 22.

[0049] As shown in FIG. 2, the waterproof part 50 has a flange part 50a and a light guide part 50b. The flange part 50a is plate-shaped and is provided at the end of the socket 10 (mounting part 11) where the recess 11a opens. The flange part 50a seals the opening of the recess 11a liquid-tight. The liquid-tightness may be such that moisture attached to the outside of the vehicle lighting device 1 (mounting part 11) does not enter the inside of the recess 11a. The flange part 50a can be bonded to the end of the socket 10, for example. If the flange part 50a seals the opening of the recess 11a liquid-tight, it is possible to prevent moisture that has passed through the seal member 104 from entering the inside of the recess 11a in which the light-emitting module 20 is provided. That is, the waterproofness of the vehicle lighting device 1 can be improved.

[0050] The light guide 50b is provided inside the recess 11a. One end of the light guide 50b is provided on the flange 50a. The other end of the light guide 50b (the end on the substrate 21 side) may be in contact with the substrate 21, may face the substrate 21 with a predetermined gap therebetween, or may be bonded to the substrate 21. The other end of the light guide 50b is provided with a recess 50b1 in which the frame 23, the sealing portion 24, and the light emitting element 22 are housed. When the frame 23 is omitted, the sealing portion 24 and the light emitting element 22 are housed inside the recess 50b1. When the light emitting element 22 is a surface mount type light emitting element or a light emitting element having a lead wire such as a bullet type light emitting element, the light emitting element 22 is housed inside the recess 50b1. That is, at least the light emitting element 22 is housed inside the recess 50b1. In this case, if the end of light-guiding section 50b facing substrate 21 is adhered to substrate 21, even if moisture penetrates into recess 11a, the penetrated moisture can be prevented from reaching light-emitting element 22.

[0051] In addition, by appropriately selecting the shape and surface roughness of the inner wall of the recess 50b1, the waterproof part 50 can be provided with a function of controlling the light irradiated from the light emitting element 22. For example, by making the inner wall of the recess 50b1 a convex curved surface or a concave curved surface, the waterproof part 50 can be provided with a lens function. In addition, by changing the surface roughness of the inner wall of the recess 50b1, for example, the light distribution characteristics can be adjusted.

[0052] The flange portion 50a and the light guiding portion 50b can be integrally formed. The waterproof portion 50 (the flange portion 50a, the light guiding portion 50b) can transmit the light irradiated from the light emitting element 22. The material of the waterproof portion 50 can be, for example, a light-transmitting resin such as polycarbonate or acrylic, or glass.

[0053] FIG. 3 is a schematic cross-sectional view illustrating a waterproof section 51 (corresponding to an example of a second waterproof section) according to another embodiment. As shown in FIG. 3, the waterproof part 51 is provided on the surface of the substrate 21 on which the light emitting element 22 is provided. The waterproof part 51 is in the form of a film and liquid-tightly seals the surface of the substrate 21 on which the light emitting element 22 is provided. For example, the waterproof part 51 covers the outside of the region of the substrate 21 on which the frame part 23 is provided. For example, the waterproof part 51 can cover the wiring pattern 21a and the terminal 25d of the circuit element 25 that is connected to the wiring pattern 21a. In this case, it is preferable that the waterproof part 51 does not cover the entire circuit element 25. In this way, the waterproof part 51 can suppress a decrease in the heat dissipation performance of the circuit element 25.

[0054] The waterproof part 51 can be formed from an insulating material. The waterproof part 51 can be formed from, for example, an insulating resin. The waterproof part 51 can be formed by supplying softened resin onto the substrate 21. The resin can be supplied, for example, by using a dispenser or the like.

[0055] In this case, the waterproof part 51 can be formed using the same material (for example, silicone resin) as the sealing part 24. If the material of the waterproof part 51 is the same as the material of the sealing part 24, the sealing part 24 and the waterproof part 51 can be formed sequentially in the process of forming the sealing part 24. This makes it possible to simplify the manufacturing process and reduce manufacturing costs.

[0056] Here, when the softened resin is supplied onto the substrate 21, if the resin flows out from the periphery of the substrate 21, it may become difficult to control the thickness of the waterproof portion 51. Furthermore, if the resin flows out from the periphery of the substrate 21, the resin may adhere to the periphery of the substrate 21, making it difficult to separate the substrate 21.

[0057] For this reason, it is preferable to provide a frame-shaped wall 51a surrounding the periphery of the surface of the substrate 21 on which the light-emitting element 22 is provided. If the wall 51a is provided, it is possible to prevent the resin from flowing out from the periphery of the substrate 21 when the waterproof portion 51 is formed. In this case, the film-like waterproof portion 51 (corresponding to an example of a third waterproof portion) is provided inside the wall 51a, and liquid-tightly seals the surface of the substrate 21 on which the light-emitting element 22 is provided.

[0058] The wall 51a can be formed, for example, by supplying softened resin in a line along the periphery of the substrate 21 and hardening the resin. The resin can be supplied, for example, by using a dispenser. There is no particular limitation on the resin used to form the wall 51a. In this case, if the material of the wall 51a is the same as the material of the waterproof section 51 and the sealing section 24 (for example, silicone resin), the wall 51a, the sealing section 24, and the waterproof section 51 can be formed in sequence using the same supply device. This makes it possible to simplify the manufacturing process and reduce manufacturing costs. Alternatively, a frame-shaped wall 51 a may be formed and adhered to the periphery of the substrate 21 .

[0059] If the waterproof section 51 is provided, even if moisture that has passed through the sealing member 104 penetrates into the inside of the recess 11a in which the light-emitting module 20 is provided, the penetrated moisture can be prevented from reaching the light-emitting element 22, the circuit element 25, and the wiring pattern 21a. That is, the waterproofness of the vehicle lighting device 1 can be improved.

[0060] Moreover, the above-mentioned waterproof portion 50 and waterproof portion 51 can be used together. By using the waterproof portion 50 and waterproof portion 51 together, the waterproof property of the vehicle lighting device 1 can be further improved.

[0061] (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-mentioned description of the vehicle lighting device 1 and modified examples of the vehicle lighting device 1 (for example, the waterproof part 51, the wall 51a, and those 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.

[0062] In the following, as an example, a case where the vehicular lamp 100 is a rear combination light installed in an automobile will be described. However, the vehicular lamp 100 is not limited to a rear 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.

[0063] FIG. 4 is a schematic partial cross-sectional view illustrating the vehicle lamp 100. As shown in FIG. As shown in FIG. 4, the vehicle lamp 100 includes, for example, the vehicle lighting device 1, a housing 101, a cover 102, an optical element 103, a seal member 104, and a connector 105.

[0064] 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 around the mounting hole 101a into which the bayonet 12 provided on the mounting portion 11 is inserted. 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.

[0065] 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.

[0066] 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.

[0067] 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. 4 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.

[0068] The seal member 104 is provided between the flange 13 and the housing 101. The seal member 104 may be annular. The seal member 104 may be made of an elastic material such as rubber or silicone resin.

[0069] The connector 105 is fitted to the ends of the power supply terminals 31a to 31c exposed inside the connector holder 15. The connector 105 is electrically connected to a power source and the like. The connector 105 is also provided with an annular seal member 105a. When the connector 105 is inserted into the connector holder 15, the seal member 105a seals the inside of the connector holder 15 watertightly.

[0070] 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.

[0071] Below, additional notes regarding the above-described embodiment are given.

[0072] (Appendix 1) a socket having a recess opening at one end; A substrate disposed within the recess; a light emitting element provided on the substrate within the recess; a first waterproof portion provided at the end of the socket where the recess opens, sealing the opening of the recess liquid-tightly and having a flange portion through which light irradiated from the light-emitting element can pass; A vehicle lighting device comprising:

[0073] (Appendix 2) the first waterproof portion is provided inside the recess and further includes a light guiding portion capable of transmitting the light emitted from the light emitting element; 2. The vehicle lighting device according to claim 1, wherein one end of the light guiding portion is provided on the flange portion, and the other end of the light guiding portion is provided with a recess in which the light emitting element is housed.

[0074] (Appendix 3) The vehicle lighting device described in Appendix 1 or 2, further comprising a second waterproof portion having a film shape, provided on the surface of the substrate on which the light-emitting element is provided, and liquid-tightly sealing the surface side of the substrate.

[0075] (Appendix 4) Socket and; A substrate provided on one end side of the socket; A light emitting element provided on the substrate; a wall having a frame shape and surrounding the periphery of a surface of the substrate on which the light emitting element is provided; a third waterproof portion having a film shape, provided inside the wall, and liquid-tightly sealing the surface side of the substrate; A vehicle lighting device comprising:

[0076] (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; A vehicle lamp equipped with: [Explanation of symbols]

[0077] REFERENCE SIGNS LIST 1 vehicle lighting device, 10 socket, 11 mounting portion, 11a recess, 20 light emitting module, 21 substrate, 21a wiring pattern, 22 light emitting element, 23 frame portion, 24 sealing portion, 25 circuit element, 50 waterproof portion, 51 waterproof portion, 51a wall, 100 vehicle lamp, 101 housing

Claims

1. A socket having a recess opening at one end; A substrate disposed within the recess; a light emitting element provided on the substrate within the recess; a first waterproof portion provided at the end of the socket where the recess opens, sealing the opening of the recess liquid-tightly and having a flange portion through which light irradiated from the light-emitting element can pass; A vehicle lighting device comprising:

2. the first waterproof portion is provided inside the recess and further includes a light guiding portion capable of transmitting the light emitted from the light emitting element; The vehicle lighting device according to claim 1 , wherein one end of the light guiding portion is provided on the flange portion, and the other end of the light guiding portion is provided with a recess for accommodating the light emitting element.

3. 3. The vehicle lighting device according to claim 1, further comprising a second waterproof portion having a film shape, provided on the surface of the substrate on which the light-emitting element is provided, and liquid-tightly sealing the surface side of the substrate.

4. A socket; A substrate provided on one end side of the socket; A light emitting element provided on the substrate; a wall having a frame shape and surrounding the periphery of the surface of the substrate on which the light emitting element is provided; a third waterproof portion having a film shape, provided inside the wall, and liquid-tightly sealing the surface side of the substrate; A vehicle lighting device comprising:

5. The vehicle lighting device according to claim 1 or 4; A housing in which the vehicle lighting device is mounted; A vehicle lamp equipped with:

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