JP2021005477A - Vehicular lighting fixture and vehicular lamp - Google Patents

Abstract

To provide a vehicular lighting fixture and a vehicular lamp capable of suppressing a positional deviation in a rotating direction.SOLUTION: A vehicular lighting fixture includes a pair of mouthpieces, a substrate provided between the mouthpieces, at least one light-emitting element provided on the substrate, a cover provided between the mouthpieces and covering the substrate, and at least one rotation-preventive portion provided on the cover on one end portion side, and extending in a direction which the pair of mouthpieces faces. The mouthpiece has a body portion, and a tip end portion provided at an end portion on the opposite side to the substrate of the body portion. The tip end portion gradually decreases dimensions in a direction orthogonal to a direction which the pair of mouthpieces faces, toward the tip end side. A distance between the end portion at the opposite side to the cover side of the rotation-preventive portion and the end portion at the substrate side of the body portion is larger than a distance between the end portion at the opposite side to the substrate side of the body portion and the end portion at the substrate side of the body portion.SELECTED DRAWING: Figure 2

Description

Embodiments of the present invention relate to vehicle lighting devices and vehicle lighting fixtures.

There is a vehicle lighting device including a pair of caps and an airtight container provided between the caps and sealed with a filament. In recent years, from the viewpoint of energy saving and long life, a vehicle lighting device provided with a filament has been replaced with a vehicle lighting device provided with a light emitting diode. Therefore, a vehicle lighting device including a pair of bases in which a cylindrical portion and a conical portion are integrally formed, and a substrate provided between the bases and a base having a light emitting diode has been proposed.

Such a vehicle lighting device is electrically connected to a power source or the like by inserting a conical portion into a hole of a holder provided in the vehicle lighting equipment.

However, the vehicle lighting device can rotate about the central axis of the vehicle lighting device simply by inserting the conical portion into the hole. In the case of a vehicle lighting device provided with a filament, the light is irradiated in all directions around the central axis, so that the light can be irradiated to a desired position even if the position in the rotation direction is deviated. However, in the case of a vehicle lighting device provided with a light emitting diode, the light is mainly emitted to the front side of the light emitting diode, so that if the position in the rotation direction is deviated, the light may not be irradiated to the desired position. There is.
Therefore, it has been desired to develop a technique capable of suppressing the displacement of the position in the rotation direction.

Japanese Unexamined Patent Publication No. 2004-241191

An object to be solved by the present invention is to provide a vehicle lighting device and a vehicle lighting device capable of suppressing the displacement of the position in the rotation direction.

The vehicle lighting device according to the embodiment includes a pair of bases; a substrate provided between the bases and the bases; at least one light emitting element provided on the substrates; and the bases. A cover provided between the base and the substrate; one end side provided on the cover and at least one detent portion extending along a direction in which the pair of bases face each other; It is equipped. The mouthpiece has a main body portion and a tip portion of the main body portion provided at an end portion opposite to the substrate side. The size of the tip portion gradually decreases in the direction orthogonal to the direction in which the pair of bases face each other toward the tip side. The distance between the end of the detent portion on the side opposite to the cover side and the end of the main body on the substrate side is the end of the main body on the opposite side of the substrate. , It is larger than the distance between the end of the main body on the substrate side.

According to the embodiment of the present invention, it is possible to provide a vehicle lighting device and a vehicle lighting device that can suppress the displacement of the position in the rotation direction.

It is a schematic perspective view for exemplifying the vehicle lighting device which concerns on this embodiment. It is a schematic side view of the lighting device for a vehicle. (A) to (e) are schematic side views for exemplifying the detent portion according to another embodiment. It is a schematic side view for exemplifying the vehicle lighting device which concerns on another embodiment. It is a schematic side view for exemplifying the vehicle lighting equipment which concerns on this embodiment.

Hereinafter, embodiments will be illustrated with reference to the drawings. In each drawing, similar components are designated by the same reference numerals and detailed description thereof will be omitted as appropriate.
As the vehicle lighting device 1 according to the present embodiment, for example, those used for room lamps, meter lamps, map lamps, trunk lamps, etc. provided in automobiles, railroad vehicles, and the like can be exemplified. However, the use of the vehicle lighting device 1 is not limited to these.

(Vehicle lighting device)
FIG. 1 is a schematic perspective view for exemplifying the vehicle lighting device 1 according to the present embodiment.
FIG. 2 is a schematic side view of the vehicle lighting device 1.
As shown in FIGS. 1 and 2, the vehicle lighting device 1 may be provided with a light emitting portion 10, a cover 20, a base 30, and a detent portion 40.
The light emitting unit 10 may be provided with a substrate 11, a light emitting element 12, a resistor 13, and a diode 14.

The substrate 11 can be provided between one base 30 and the other base 30. The substrate 11 may have a plate shape. The planar shape of the substrate 11 can be a quadrangle. The planar shape of the substrate 11 illustrated in FIGS. 1 and 2 is rectangular. The width dimension W1 of the substrate 11 can be made smaller than the width dimension W2 of the base 30. The width dimension is a dimension in a direction orthogonal to the direction in which the pair of bases 30 face each other (the direction of the central axis 1a). In order to facilitate replacement with a vehicle lighting device provided with a conventional filament, the width dimension W1 of the substrate 11 is preferably 20 mm or less, for example, about 6.4 mm.

However, the planar shape and width dimension W1 of the substrate 11 are not limited to those illustrated. For example, the width dimension of the portion of the substrate 11 on which the light emitting element 12 is provided can be made larger than the width dimension of both end portions of the substrate 11. In this case, the width dimension of the portion of the substrate 11 where the light emitting element 12 is provided can be made larger than the width dimension W2 of the base 30. In such a case, the shape and dimensions of the cover 20 may be adapted to the shape and dimensions of the substrate 11. If the width dimension of the portion of the substrate 11 on which the light emitting element 12 is provided is increased, it becomes easy to change the number and arrangement of the light emitting elements 12. Further, if the portion having a large width dimension is provided on the substrate 11, when the vehicle lighting device 1 is attached to and detached from the holders 103 and 104 of the vehicle lighting fixture 100, a finger can be hung on the portion having a large width dimension. Therefore, the vehicle lighting device 1 can be easily attached to and detached from the holders 103 and 104.

The mechanical connection between the substrate 11 and the base 30 is not particularly limited. For example, as illustrated in FIG. 1, a groove or a hole is provided on the end surface of the main body portion 30a on the side opposite to the side where the tip portion 30b is provided, and the end portion of the substrate 11 is bonded inside the groove or the hole. The end portion of the substrate 11 can be soldered, and the end portion of the substrate 11 can be press-fitted.

The substrate 11 can be formed from an insulating material. The substrate 11 can be formed from an inorganic material such as ceramics (for example, aluminum oxide or aluminum nitride), an organic material such as paper phenol or glass epoxy, or the like. Further, the substrate 11 may be a metal plate whose surface is coated with an insulating material. When the surface of the metal plate is covered with an insulating material, the insulating material may be made of an organic material or an inorganic material.

When the amount of heat generated by the light emitting element 12 is large, it is preferable to form the substrate 11 using a material having high thermal conductivity from the viewpoint of heat dissipation. Examples of the material having high thermal conductivity include ceramics such as aluminum oxide and aluminum nitride, a highly thermally conductive resin, and a metal plate whose surface is coated with an insulating material. The high thermal conductivity resin can be, for example, a resin such as PET (Polyethylene terephthalate) or nylon mixed with a filler made of aluminum oxide, carbon (carbon), or the like.

The thickness of the substrate 11 can be 0.8 mm or more and 2.2 mm or less, for example, about 1.6 mm. However, the thickness of the substrate 11 is not limited to that illustrated. Further, the substrate 11 may have a single-layer structure or may have a multi-layer structure.

A wiring pattern 11a can be provided on one surface of the substrate 11. The wiring pattern 11a can be formed from a conductive material. The wiring pattern 11a can be formed from, for example, a low resistance metal such as silver, copper, or aluminum.

The wiring pattern 11a may be provided with a mounting pad 11a1 and a connection pad 11a2. The mounting pad 11a1 can be provided in the central region of the substrate 11. The connection pad 11a2 can be provided near the end portion of the substrate 11 on the base 30 side. The light emitting element 12 can be electrically connected to the mounting pad 11a1. Further, when the resistor 13 and the diode 14 are provided, a mounting pad for electrically connecting these and the wiring pattern 11a can be provided. The base 30 can be electrically connected to the connection pad 11a2. In this case, the connection pad 11a2 and the base 30 can be electrically connected by using solder or a conductive adhesive, or the connection pad 11a2 and the base 30 can be electrically connected via wiring or the like. ..

Further, the wiring pattern 11a can also be provided on the other surface of the substrate 11 (the surface opposite to the light emitting element 12 side). The wiring pattern 11a provided on one surface of the substrate 11 and the wiring pattern 11a provided on the other surface of the substrate 11 can be electrically connected by a conductive via or the like penetrating the thickness direction of the substrate 11. it can.

If the wiring pattern 11a is also provided on the other surface of the substrate 11, elements such as a resistor 13 and a diode 14 can be mounted on the other surface of the substrate 11. Therefore, since the types and number of elements to be mounted can be increased, it becomes easy to protect the vehicle lighting device 1 and to increase the number of functions.

At least one light emitting element 12 can be provided on the substrate 11. The light emitting element 12 can be electrically connected to the wiring pattern 11a. The light emitting element 12 can be mounted on the mounting pad 11a1. The light emitting element 12 can be, for example, a light emitting diode, an organic light emitting diode, a laser diode, or the like.

The type of the light emitting element 12 is not particularly limited. The light emitting element 12 can be, for example, a surface mount type light emitting element such as a PLCC (Plastic Leaded Chip Carrier) type. The light emitting element 12 illustrated in FIGS. 1 and 2 is a surface mount type light emitting element. Further, the light emitting element 12 may be, for example, a light emitting element having a lead wire such as a cannonball type.

Further, the light emitting element 12 may be mounted by a COB (Chip On Board). When the light emitting element 12 is mounted by COB, a chip-shaped light emitting element 12, a wiring that electrically connects the light emitting element 12 and the wiring pattern 11a, and a frame-shaped member that surrounds the light emitting element 12 and the wiring. , A sealing portion provided inside the frame-shaped member and covering the light emitting element 12 and the wiring can be provided on the surface of the substrate 11. In addition, a phosphor can be included in the sealing portion. The phosphor can be, for example, a YAG-based phosphor (yttrium-aluminum-garnet-based phosphor). The types of phosphors are not limited to those illustrated. The type of the phosphor can be appropriately changed so as to obtain a desired emission color according to the application of the vehicle lighting device 1.

The light emitting surface of the light emitting element 12 can be substantially parallel to the surface of the substrate 11. The light emitting element 12 mainly emits light in a direction perpendicular to the surface of the substrate 11 (front side of the light emitting element 12). If the light emitting element 12 is provided on one surface of the substrate 11, the light distribution characteristic tends to be biased. However, when the vehicle lighting device 1 is used for a vehicle interior light (for example, a room lamp, a meter lamp, a map lamp, a trunk lamp, etc.), irradiate one side of the vehicle lighting device 1 with light. Just do it. Therefore, when the vehicle lighting device 1 is used for a vehicle interior light or the like, it is preferable to have such a light distribution characteristic.

The number, size, arrangement, etc. of the light emitting elements 12 are not limited to those illustrated, and can be appropriately changed depending on the size, application, and the like of the vehicle lighting device 1. When a plurality of light emitting elements 12 are provided, the plurality of light emitting elements 12 can be connected in series.

The resistor 13 can be provided on one surface of the substrate 11 and at least one of the other surfaces. In the case of the vehicle lighting device 1 illustrated in FIG. 2, the resistor 13 is provided on the other surface of the substrate 11. If the light emitting element 12 is provided on one surface of the substrate 11 and the resistor 13 is provided on the other surface of the substrate 11, the light emitted from the light emitting element 12 may be absorbed by the resistor 13 or blocked by the resistor 13. Can be suppressed. Therefore, the light extraction efficiency can be improved.

The resistor 13 can be electrically connected to the wiring pattern 11a. The resistor 13 can be mounted on a mounting pad provided in the wiring pattern 11a. The resistor 13 can be connected in series with the light emitting element 12 via the wiring pattern 11a.
The resistor 13 can be, for example, a current limiting resistor.
Further, the resistor 13 may adjust the brightness of the light emitting element 12. Since the forward voltage characteristics of the light emitting element 12 vary, if the applied voltage between the anode terminal and the ground terminal is made constant, the brightness (luminous flux, brightness, luminous intensity, illuminance) of the light emitting element 12 will be changed. Variations may occur. Therefore, the value of the current flowing through the light emitting element 12 is set within the predetermined range by the resistor 13 so that the brightness of the light emitting element 12 falls within the predetermined range. In this case, by changing the resistance value of the resistor 13, the value of the current flowing through the light emitting element 12 can be kept within a predetermined range.

The resistor 13 can be, for example, a surface mount type resistor, a resistor having a lead wire (metal oxide film resistor), a film-shaped resistor formed by using a screen printing method, or the like. The resistor 13 illustrated in FIG. 2 is a surface mount type resistor. When the resistor 13 is a surface mount type resistor or a resistor having a lead wire, the resistor 13 having an appropriate resistance value can be selected according to the forward voltage characteristic of the light emitting element 12. When the resistor 13 is a film-like resistor, the resistance value of the resistor 13 can be adjusted. For example, the resistance value can be increased by removing a part of the film-like resistor. For example, if a film-shaped resistor is irradiated with laser light, a part of the film-shaped resistor can be easily removed.
The number, size, arrangement, etc. of the resistors 13 are not limited to those illustrated, and can be appropriately changed according to the number, specifications, and the like of the light emitting elements 12.

The diode 14 can be provided on at least one of the one surface and the other surface of the substrate 11. In the case of the vehicle lighting device 1 illustrated in FIG. 2, the diode 14 is provided on the other surface of the substrate 11. If the light emitting element 12 is provided on one surface of the substrate 11 and the diode 14 is provided on the other surface of the substrate 11, the light emitted from the light emitting element 12 may be absorbed by the diode 14 or blocked by the diode 14. It can be suppressed. Therefore, the light extraction efficiency can be improved.

The diode 14 can be electrically connected to the wiring pattern 11a. The diode 14 can be mounted on the mounting pad. The diode 14 can be connected in series with the light emitting element 12 via the wiring pattern 11a. The diode 14 can be provided to prevent a reverse voltage from being applied to the light emitting element 12 and to prevent pulse noise from the reverse direction from being applied to the light emitting element 12.

Further, if necessary, electrical components such as transistors, capacitors, and integrated circuits can be provided on the substrate 11. Further, a covering portion that covers a part of the wiring pattern 11a, a film-like resistor, or the like can be provided. The covering portion may be, for example, a film containing a white solder resist, a film containing a glass material, or the like.

The resistor 13, the diode 14, and the electric component do not necessarily have to be provided on the substrate 11. For example, the resistor 13, the diode 14, and the electric component can be provided on a circuit board or the like provided on the vehicle lamp 100. However, if the resistor 13, the diode 14, and the electric component are provided on the substrate 11, the vehicle lighting device 1 can be protected and multifunctional without modifying the existing vehicle lighting device 100.

The cover 20 can be provided between one base 30 and the other base 30. The cover 20 may have a tubular shape. The cover 20 may cover the substrate 11, the light emitting element 12, the resistor 13, the diode 14, electric components, and the like. The cover 20 can be formed from a translucent material. The cover 20 can be formed of, for example, glass or a translucent resin such as polycarbonate. The cover 20 can be adhered to at least one of the base 30 and the substrate 11, for example.

Further, the cover 20 may be divided into a portion 20a of the substrate 11 that covers the side on which the light emitting element 12 is provided and a portion 20b of the substrate 11 that covers the side opposite to the side on which the light emitting element 12 is provided. it can. In this case, the portion 20a can be formed from a translucent material. The portion 20b can be formed from a light-transmitting material or a light-shielding material. The portion 20a and the portion 20b can be joined by adhesion. Further, it is also possible to provide a convex portion or a claw on one of the portion 20a and the portion 20b, and provide a hole or the like in which the convex portion or the claw is locked on the other of the portion 20a and the portion 20b.

If the cover 20 is provided, it is possible to prevent the operator from touching the substrate 11, the wiring pattern 11a, the light emitting element 12, the resistor 13, the diode 14, and the like, and preventing water, gas, and the like from coming into contact with them. be able to. Therefore, when the vehicle lighting device 1 is attached to the holders 103 and 104, it is possible to prevent the light emitting element 12 and the like from being damaged by static electricity and the wiring pattern 11a and the like from being corroded by moisture and gas.

A pair of bases 30 can be provided. The mouthpiece 30 can have a main body portion 30a and a tip portion 30b. For example, the main body portion 30a and the tip portion 30b can be integrally formed by a die casting method, a press molding method, a sheet metal method, or the like. Further, for example, the main body portion 30a and the tip portion 30b can be joined by welding, brazing, soldering, bonding with a conductive adhesive, or the like.

The base 30 (main body 30a, tip 30b) can be formed of a conductive material. The base 30 can be formed from a low resistance metal such as a copper alloy or an aluminum alloy. Further, a plating layer made of nickel, chromium, or the like can be provided on the surface of the base 30.

A light emitting unit 10 (wiring pattern 11a) can be electrically connected to the main body 30a. A space may be provided inside the main body 30a, or no space may be provided. If a space is provided inside the main body 30a, the weight of the base 30 can be reduced, and the weight of the vehicle lighting device 1 can be reduced.

The shape of the main body 30a can be, for example, a columnar shape. The shape of the main body 30a illustrated in FIGS. 1 and 2 is a cylinder or a cylinder. The shape of the main body 30a may be, for example, a part of a cylinder, a prism such as a prism, or a prism. However, if the shape of the main body 30a is a cylinder or a cylinder, the main body 30a can be easily formed.

The tip portion 30b can be provided at the end portion of the main body portion 30a on the side opposite to the substrate 11 side. The size of the tip portion 30b can be gradually reduced in the direction orthogonal to the direction in which the pair of bases 30 face each other toward the tip side. The shape of the tip portion 30b can be, for example, a cone. The shape of the tip 30b is such that a part of a sphere such as a truncated cone, a pyramid, a pyramid, a hemisphere, a stepped protrusion, a protrusion whose side surface is partially sloped, and a taper at the tip. It can also be a protrusion. However, if the shape of the tip portion 30b is a cone or a truncated cone, the tip portion 30b can be easily formed.

Here, as will be described later, when the vehicle lighting device 1 is attached to the holders 103 and 104 of the vehicle lighting fixture 100, the tip portion 30b is provided inside the holes 103a and 104a provided in the holders 103 and 104. Be done. At this time, the side surface of the tip portion 30b can be brought into contact with the inner wall surfaces of the holes 103a and 104a. Further, the elastic force of the holders 103 and 104 can cause the vehicle lighting device 1 to be sandwiched between the holders 103 and 104. Therefore, it is possible to prevent the vehicle lighting device 1 from falling off from the holders 103 and 104.

However, if the tip portion 30b is simply inserted into the holes 103a and 104a provided in the holders 103 and 104, the vehicle lighting device 1 may rotate about the central axis 1a of the vehicle lighting device 1. In the case of a vehicle lighting device provided with a filament, the light is irradiated in all directions around the central axis, so that the light can be irradiated to a desired position even if the position in the rotation direction is deviated. However, in the case of the vehicle lighting device 1 provided with the light emitting element 12, the light is mainly emitted to the front side of the light emitting element 12, so that the light is irradiated to a desired position when the position in the rotation direction is deviated. It may not be possible.

Therefore, the vehicle lighting device 1 according to the present embodiment is provided with a detent portion 40.
One end side of the detent portion 40 can be provided on the cover 20. The detent portion 40 can have a form in which a pair of bases 30 extend in a direction facing each other. In the direction in which the pair of bases 30 face each other, the end portion 40a of the detent portion 40 on the side opposite to the cover 20 side is the tip of the tip portion 30b rather than the end portion of the main body portion 30a on the side opposite to the substrate 11 side. It can be provided on the 30b1 side. That is, the distance L1 between the end portion 40a of the detent portion 40 on the side opposite to the cover 20 side and the end portion of the main body portion 30a on the substrate 11 side is the side opposite to the substrate 11 side of the main body portion 30a. The distance between the end portion of the main body portion 30a and the end portion of the main body portion 30a on the substrate 11 side can be made larger than the distance L2.

In the direction in which the pair of bases 30 face each other, the end 40a of the detent portion 40 may be at the same position as the tip 30b1 of the tip 30b, may be outside the tip 30b1 of the tip 30b, or may be the tip. It may be on the substrate 11 side of the tip 30b1 of the portion 30b. As shown in FIG. 5, which will be described later, the surface 40b of the detent portion 40 facing the side surface 30a1 of the main body portion 30a may be brought into contact with the outer circumference of the holder 103, or between the surface 40b and the outer circumference of the holder 103. A slight gap may be provided in the. For example, a gap of 10 mm or less may be provided between the surface 40b and the outer circumference of the holder 103. However, if the surface 40b and the outer periphery of the holder 103 are brought into contact with each other, it is possible to further suppress the displacement of the position of the vehicle lighting device 1 in the rotation direction.

The surface 40b of the detent portion 40 may be in contact with the side surface 30a1 of the main body portion 30a, or a gap may be provided between the surface 40b and the side surface 30a1. In the case of the detent portion 40 illustrated in FIGS. 1 and 2, a gap is provided between the surface 40b and the side surface 30a1. The surface 40b of the detent portion 40 can be substantially parallel to the surface of the substrate 11 on which the light emitting element 12 is provided.

The vicinity of the end 40c or the end 40c on the substrate 11 side of the detent portion 40 can be joined to the cover 20. For example, the detent portion 40 can be adhered to the cover 20. For example, the detent portion 40 can be press-fitted into a hole provided in the cover 20. For example, the detent portion 40 can be fixed to the cover 20 by a fastening member such as a screw. Further, as will be described later, the detent portion 40 can be integrated with the cover 20.

As shown in FIGS. 1 and 2, the detent portion 40 can be a plate-shaped body. By increasing the width dimension W3 of the detent portion 40, it is possible to further suppress the displacement of the position of the vehicle lighting device 1 in the rotation direction. On the other hand, if the width dimension W3 of the detent portion 40 is made too large, it may interfere with elements provided in the adjacent vehicle lighting device 1 and vehicle lighting device 100. According to the findings obtained by the present inventors, it is preferable to set “0.1 ≦ W3 / W2 ≦ 3”. By doing so, it is possible to suppress the displacement of the position of the vehicle lighting device 1 in the rotation direction, and it is possible to suppress the interference with other elements.

Further, the detent portion 40 may be a plate-shaped body or a linear body having a small width dimension W3. In such a case, a plurality of detent portions 40 can be provided side by side in a direction orthogonal to the direction in which the pair of bases 30 face each other. In this case, a plurality of detent portions 40 can be provided within the range of the width dimension W3 described above.

The material of the detent portion 40 is not particularly limited as long as it has a certain degree of rigidity. The material of the detent portion 40 can be, for example, an organic material such as resin, a metal such as stainless steel or a copper alloy, or an inorganic material such as ceramics.

If the detent portion 40 is provided, the detent portion 40 and the holder 103 can interfere with each other when the vehicle lighting device 1 tries to deviate in the rotation direction. Therefore, it is possible to prevent the vehicle lighting device 1 from being displaced in the rotation direction. As a result, it is possible to suppress the irradiation of light at an unintended position.

3 (a) to 3 (e) are schematic side views for exemplifying the detent portion according to another embodiment.
As shown in FIG. 3A, the detent portion 40 and the cover 20 can be integrated. For example, when the detent portion 40 contains an organic material, the detent portion 40 and the cover 20 can be integrally formed by an injection molding method, a two-color molding method, or the like. For example, when the detent portion 40 contains a metal or an inorganic material, the detent portion 40 and the cover 20 can be integrally formed by an insert molding method or the like.

If the detent portion 40 and the cover 20 are integrated, the strength of the joint portion between the detent portion 40 and the cover 20 can be improved. Moreover, since the manufacturing becomes easy, the manufacturing cost can be reduced.

On the other hand, as illustrated in FIGS. 1 and 2, if the detent portion 40 and the cover 20 are separately formed and joined to each other, it becomes easy to correspond to the holder 103 having different dimensions. For example, by changing the size and shape of the detent portion 40, it is possible to correspond to the holder 103 having different dimensions. That is, the light emitting unit 10, the cover 20, and the base 30 can be generalized.

As shown in FIG. 3B, a bent portion 40d can be further provided in the vicinity of the end portion 40a of the detent portion 40. The bent portion 40d may be inclined in a direction closer to the base 30 toward the tip end side. If the bent portion 40d is provided, the bent portion 40d can be hooked on the holder 103 when the vehicle lighting device 1 tries to shift in the direction of the central axis 1a. Therefore, it is possible to prevent the vehicle lighting device 1 from being displaced in the direction of the central axis 1a.

As shown in FIG. 3C, the two detent portions 40 can be provided facing each other. By doing so, it is possible to further suppress the displacement of the position of the vehicle lighting device 1 in the rotation direction.

As shown in FIGS. 3D and 3E, the surface 40b of the detent portion 40 can be substantially parallel to the surface (side surface 11b) of the substrate 11 that intersects the surface on which the light emitting element 12 is provided. .. In this case, as shown in FIG. 3 (e), the two detent portions 40 can be provided facing each other.
Even in these cases, it is possible to prevent the vehicle lighting device 1 from being displaced in the rotation direction.

The embodiment described above is a case where the detent portion 40 is provided on the side of one base 30 and the detent portion 40 is not provided on the side of the other base 30. Here, since the direction of the current flowing through the light emitting element 22 is fixed, it may be necessary to connect one base 30 to the positive electrode and the other base 30 to the negative electrode. In this case, if the detent portion 40 is provided on the side of one of the bases 30, the mounting direction of the vehicle lighting device 1 can be easily known, so that erroneous assembly can be prevented.

However, the detent portion 40 may be provided on the side of one base 30 and the side of the other base 30. That is, the detent portion 40 can be provided for each of the pair of bases 30.
FIG. 4 is a schematic side view for exemplifying the vehicle lighting device 1b according to another embodiment. As shown in FIG. 4, the vehicle lighting device 1b may be provided with a plurality of detent portions 40. The plurality of detent portions 40 can be provided, for example, on the side of one base 30 and the side of the other base 30. By doing so, it is possible to further suppress the displacement of the position of the vehicle lighting device 1 in the rotation direction.

If the detent portion 40 is provided on the side of one base 30 and the side of the other base 30, it is not necessary to consider the mounting direction when mounting the vehicle lighting device 1 on the holder 103. Therefore, the workability of the mounting work can be improved. However, in this way, the base 30 is connected to the positive electrode or the negative electrode. As described above, the direction of the current flowing through the light emitting element 22 is fixed. Therefore, when the detent portion 40 is provided on the side of one base 30 and the side of the other base 30, a bridge circuit or the like is provided in the light emitting unit 10, and the base 30 is connected to either the positive electrode or the negative electrode. It is preferable to enable it.
As described above, at least one detent portion 40 can be provided.

(Vehicle lamps)
FIG. 5 is a schematic side view for exemplifying the vehicle lamp 100 according to the present embodiment. In the following, as an example, a case where the vehicle lighting device 1 illustrated in FIGS. 1 and 2 is provided will be described. Further, the case where one vehicle lighting device 1 is provided will be described, but at least one vehicle lighting device 1 may be provided.
As shown in FIG. 5, the vehicle lighting device 100 may be provided with the vehicle lighting device 1, the housing 101, the cover 102, the holder 103, and the holder 104.

The housing 101 may have a box shape with one end side open. The housing 101 can be formed of, for example, a resin that does not transmit light.
The cover 102 can be provided so as to close the opening of the housing 101. The cover 102 can be formed of a translucent resin or the like. The cover 102 may have a function such as a lens, or may suppress glare. Further, the cover 102 can be provided in the housing 101 so as to be openable and closable, or can be provided in a detachable manner.

The holder 103 can be provided inside the housing 101. For example, the holder 103 can be fixed to the bottom surface of the housing 101. The holder 103 can have a hole 103a for inserting the tip portion 30b of the base 30. In this case, if the hole 103a is a hole that opens to the side surface of the holder 103 or the like, the vehicle lighting device 1 can be easily attached and detached. However, considering that vibration due to traveling or the like is applied, it is preferable that the hole 103a is a hole that penetrates the thickness direction of the holder 103 and does not open to the side surface or the like.

The portion of the holder 103 provided with the hole 103a can be elastically deformed. Therefore, the holder 103 can be formed from a conductive spring material such as phosphor bronze. Further, a plating layer made of nickel, chromium, or the like can be provided on the surface of the holder 103. The holder 103 can be formed by, for example, a press molding method, a sheet metal method, or the like.

The holder 104 can be provided inside the housing 101. For example, the holder 104 can be fixed to the side surface of the housing 101. The holder 104 can have a hole 104a for inserting the tip portion 30b of the base 30. The hole 104a can be provided at a position facing the hole 103a of the holder 103. In this case, if the hole 104a is a hole that opens to the side surface of the holder 104 or the like, the vehicle lighting device 1 can be easily attached and detached. However, considering that vibration due to traveling or the like is applied, it is preferable that the hole 104a is a hole that penetrates the thickness direction of the holder 104 and does not open to the side surface or the like.

The portion of the holder 104 provided with the hole 104a may not move. The holder 104 can be formed from a low resistance metal such as a copper alloy or an aluminum alloy. Further, a plating layer made of nickel, chromium, or the like can be provided on the surface of the holder 104. The holder 104 can be formed by, for example, a press molding method, a sheet metal method, or the like.

A holder 103 may be provided instead of the holder 104. That is, a pair of holders 103 can be provided. However, if the holder 104 is provided, the hole 104a of the holder 104 can be used as a reference for mounting when the vehicle lighting device 1 is mounted.

As shown in FIG. 5, when the vehicle lighting device 1 is attached to the holders 103 and 104, the holder 103 is elastically deformed in a direction in which the distance between the holder 103 and the holder 104 increases. Next, the tip portion 30b on the side where the detent portion 40 is not provided is inserted into the hole 104a of the holder 104. Next, the elastically deformed holder 103 is returned to its original shape, and the tip portion 30b on the side where the detent portion 40 is provided is inserted into the hole 103a of the holder 103. As described above, the vehicle lighting device 1 can be attached to the holders 103 and 104.

By attaching the vehicle lighting device 1 to the holders 103 and 104, the vehicle lighting device 1 and the holders 103 and 104 are mechanically and electrically connected. A power source or the like provided outside the vehicle lamp 100 can be electrically connected to the holders 103 and 104. A circuit board may be provided on at least one of the inside and the outside of the housing 101 so that the holders 103 and 104 and the power supply and the like are electrically connected via the circuit board.

When the vehicle lighting device 1 is attached to the holder 103, the inner wall of the hole 103a of the holder 103 comes into contact with the side surface of the tip portion 30b due to the elastic force. Further, due to the elastic force, the inner wall of the hole 104a of the holder 104 comes into contact with the side surface of the tip portion 30b. Therefore, it is possible to suppress variations in electrical resistance at the contact portion between the holders 103 and 104 and the tip portion 30b. Further, since the vehicle lighting device 1 is held by the holders 103 and 104 by the elastic force, it is possible to prevent the vehicle lighting device 1 from falling off due to vibration caused by traveling or the like. Further, as described above, since the detent portion 40 is provided, it is possible to prevent the vehicle lighting device 1 from being displaced in the rotation direction. Therefore, even if vibration is applied to the vehicle lighting device 1, the light can be irradiated to the intended position.

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 embodiments, and various omissions, replacements, changes, etc. can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof. In addition, the above-described embodiments can be implemented in combination with each other.

1 Vehicle lighting device, 1a central axis, 1b Vehicle lighting device, 10 light emitting part, 11 board, 12 light emitting element, 20 cover, 20a part, 20b part, 30 base, 30a main body part, 30a1 side surface, 30b tip part, 40 Anti-rotation part, 40a end, 40b surface, 40c end, 100 Vehicle lighting equipment, 101 housing, 103 holder, 103a hole, 104 holder, 104a hole

Claims (7)

With a pair of caps;
A substrate provided between the base and the base;
With at least one light emitting element provided on the substrate;
A cover provided between the base and the base and covering the substrate;
One end side is provided on the cover, and at least one detent portion extending along the direction in which the pair of bases face each other;
Equipped with
The mouthpiece has a main body portion and a tip portion of the main body portion provided at an end portion opposite to the substrate side.
The size of the tip portion gradually decreases in the direction orthogonal to the direction in which the pair of bases face each other toward the tip side.
The distance between the end of the detent portion on the side opposite to the cover side and the end of the main body on the substrate side is the end of the main body on the opposite side of the substrate. , A vehicle lighting device that is larger than the distance between the main body and the end of the main body on the substrate side. The vehicle lighting device according to claim 1, wherein the cover and the detent portion are integrally formed. The cover is divided into a portion of the substrate that covers the side on which the light emitting element is provided and a portion of the substrate that covers the side of the substrate opposite to the side on which the light emitting element is provided. Or the vehicle lighting device according to 2. The vehicle use according to any one of claims 1 to 3, wherein the surface of the detent portion facing the side surface of the main body portion is substantially parallel to the surface of the substrate on which the light emitting element is provided. Lighting device. The surface of the detent portion facing the side surface of the main body portion is one of claims 1 to 3 which is substantially parallel to the surface of the substrate that intersects the surface on which the light emitting element is provided. The vehicle lighting device described. The vehicle lighting device according to any one of claims 1 to 5, wherein the detent portion is provided for each of the pair of bases. With the vehicle lighting device according to any one of claims 1 to 6.
With a holder having a hole in which the tip of the base provided in the vehicle lighting device is provided;
Vehicle lighting fixtures equipped with.

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