JP2012084343A - Lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp which can suppress dispersion of an optical axis while reducing the number of components and achieving miniaturization.SOLUTION: A light source 10 is pinched between a lighting part 20 and a supporting part 30 and the pinched light source 10 is pushed on to the supporting part 30 by an energizing part 40, and thereby, a light source side reference surface 13 of the light source 10 and a supporting part side reference surface 33 of the supporting part 30 contact each other to determine a relative position of the light source 10 and the supporting part 30, and a position and a posture of the light source 10 to the supporting part 30 are determined. Thus, dispersion of a direction of light emitted out from the supporting part 30 or in other words, the dispersion of an optical axis can be suppressed. Further, since the lighting part 20 is fixed on the supporting part 30 and moreover the light source 10 is pinched between the lighting part 20 and the supporting part 30, the number of components can be reduced and miniaturization can be attained as compared with a case of the light source 10 being fixed direct on the supporting part 30.

Description

  The present invention relates to a lamp.

  In recent years, there has been a strong demand for cost reduction and downsizing of lamps such as headlights provided in moving bodies such as vehicles. In order to meet this demand, for a lamp using a discharge lamp as a light source, a lighting device having the discharge lamp fixed thereon is used as a reflection part (a member that reflects light emitted from the discharge lamp in a desired direction) constituting the lamp. An assembling method for fixing has been proposed (see, for example, Patent Document 1).

  Using such an assembling method, the number of parts constituting the lamp can be reduced compared to a method of attaching a light source to a lighting device like a conventional lamp and fixing the lighting device to a reflecting portion, and The lamp can be made smaller (for example, thinner).

JP 2001-101909 A

  By the way, since the lamp provided in a moving body as mentioned above needs to illuminate a predetermined area | region, it is calculated | required that the optical axis of a lamp is kept constant. In a conventional lamp, for example, by aligning a reference surface of a light source such as a discharge lamp with a reference surface of a reflecting portion that reflects light emitted from the light source toward a predetermined region, the optical axis is made constant. It was kept. In other words, the light distribution design of the lamp has been established by matching the reference surface of the discharge lamp with the reference surface of the reflecting portion. In the conventional lamp, since the light source is directly attached to the reflecting portion, it is easy to match the above-described reference planes.

  However, as described in Patent Document 1 described above, when the light source is attached to the lighting device and the lighting device is fixed to the reflecting portion, the light source is indirectly attached to the reflecting portion. For this reason, it is difficult to make the reference plane of the light source coincide with the reference plane of the reflecting portion, and it is difficult to keep the optical axis of the lamp constant.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lamp capable of reducing the number of parts and reducing the size and suppressing variations in the optical axis.

In order to achieve the above object, the present invention provides the following means.
In the lamp of the present invention, the light source is sandwiched between the lighting unit and the support unit, and the sandwiched light source is pushed toward the support unit by the urging unit. Thereby, the light source side reference surface of the light source and the support portion side reference surface of the support portion are in direct contact with each other, the relative position between the light source and the support portion is determined, and the position and posture of the light source with respect to the support portion are determined. Therefore, it is possible to suppress variations in the direction of light emitted from the support portion to the outside, in other words, variations in the optical axis.

  In addition, since the light source is attached to the support part and the light source is sandwiched between the light part and the support part, the number of parts can be reduced and the lamp can be downsized compared to the case where the light source is directly attached to the support part. Can be planned.

  The assembly of the lamp can be improved by providing the light source and the lighting part with an engaging convex part and an engaging concave part that can be combined. When the light source is sandwiched between the lighting part and the support part, the light source is attached to the lighting part by combining the engagement convex part and the engagement concave part, and then the support part is attached to the lighting part with the light source sandwiched therebetween. Thus, the light source can be prevented from falling when the light source is sandwiched between the lighting part and the support part.

  Further, when the support portion side reference surface provided in the support portion is brought into contact with the light source side reference surface provided in the light source, an urging force is applied between the combined engagement convex portion and engagement concave portion. A gap is secured in the pressing direction by the member. Therefore, the support portion side reference surface and the light source side reference surface come into contact only with the pressing force by the urging member, and it is possible to prevent an excessive force from being applied to the light source, the lighting portion, and the support portion.

  More specifically, in the case where the light source is provided with an engaging convex portion and the lighting portion is provided with an engaging concave portion, and the lighting portion is attached to the support portion, The minimum distance from the end surface on the support portion side to the light source side reference surface is larger than the maximum distance from the support portion side end surface to the support portion side reference surface in the engagement recess, and the lighting portion side in the engagement protrusion The maximum distance from the end surface to the light source side reference surface may be smaller than the minimum distance from the lighting portion side end surface to the support portion side reference surface in the engaging recess. Here, the minimum distance and the maximum distance are the minimum distance and the maximum distance on the premise of dimensional variations that always occur in manufacturing the light source, the lighting part, and the support part.

  By making the support part a reflection part that reflects at least part of the light emitted from the light source, it is possible to more reliably suppress variations in the direction of light emitted from the support part to the outside, that is, variations in the optical axis. Can do.

  By using the biasing part as a contact terminal for supplying power from the lighting part to the light source, the biasing part is in contact with both the lighting part and the light source even if the light source is moved to the support part side by the biasing part. Therefore, supply of electric power from the lighting unit to the light source can be ensured.

  According to the lamp of the present invention, the light source is sandwiched between the lighting unit and the support unit, the light source sandwiched by the urging unit is pushed toward the support unit, the light source side reference surface provided on the light source, and the support unit By making contact with the support side reference surface provided on the surface, the number of components can be reduced and the size can be reduced, and variations in the optical axis can be suppressed.

It is the schematic explaining the structure of the vehicle lamp which concerns on one Embodiment of this invention. It is the elements on larger scale explaining the structure of the connection part of the light source of FIG. 1, a lighting device, and a reflection part. It is the elements on larger scale explaining the structure of the light source side attaching part in the light source of FIG. It is the elements on larger scale explaining the structure of the lighting device of FIG. It is an expanded view explaining the shape of the engaging groove of FIG. It is the elements on larger scale explaining the structure of the reflection side attachment part in the reflection part of FIG. It is an expanded view explaining the shape of the reflection side engaging groove of FIG. It is a schematic diagram explaining the relationship of the dimension in the light source of FIG. 2, a lighting device, and a reflection part. It is the elements on larger scale explaining the structure of the vehicle lamp which concerns on embodiment different from the vehicle lamp of FIG.

A lamp according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic diagram illustrating the configuration of a vehicular lamp 1 according to the present embodiment.
In the present embodiment, the lamp of the present invention will be described as a vehicular lamp (lamp) 1 applied to a vehicle that is an automobile. The vehicular lamp 1 illuminates a road surface in front of the vehicle at night, for example. As illustrated in FIG. 1, the vehicular lamp 1 reflects a light source 10 that is a discharge lamp, a lighting device (lighting unit) 20 that supplies power to the light source 10, and a part of light emitted from the light source 10. A reflecting portion (supporting portion) 30, a spring portion (biasing portion) 40 that presses the light source 10 toward the reflecting portion 30, a housing 50 that houses the light source 10, the lighting device 20, and the reflecting portion 30 inside, Is mainly provided.

  FIG. 2 is a partial enlarged view for explaining the configuration of the connecting portion of the light source 10, the lighting device 20, and the reflecting portion 30 of FIG. 1, and FIG. 3 is the configuration of the light source side mounting portion 12 in the light source 10 of FIG. FIG.

  The light source 10 receives light supplied from the lighting device 20 and generates light emitted from the vehicular lamp 1. As shown in FIG. 2, the light source 10 mainly includes a light emitting unit 11 that is a portion that emits light and a light source side mounting portion 12 that is a portion that is attached to the lighting device 20.

  2 and 3, the light source side mounting portion 12 is formed in a columnar shape, and is formed on the large diameter portion formed on the reflecting portion 30 side and on the lighting device 20 side. And a small diameter portion having a small diameter. Further, the light source side attachment portion 12 is electrically connected to the light source side reference surface 13 used for alignment with the reflection portion 30, the engagement convex portion 14 used for attachment to the lighting device 20, and the lighting device 20. The light source side terminal 15 to be connected is provided.

  The light source side reference surface 13 is a surface provided at the end of the light source side mounting portion 12 on the reflecting portion 30 side, and is a surface that contacts a reflecting portion side reference surface 33 described later. The light source side reference surface 13 is also a surface formed in a ring shape surrounding the periphery of the light emitting unit 11.

  The engaging convex portion 14 is used when the light source 10 is attached to the lighting device 20 together with the lighting side engaging groove 27 described later, and prevents the light source 10 from dropping and dropping from the lighting device 20. is there. The engaging convex portion 14 is a side surface of the light source side mounting portion 12 formed in a columnar shape, and is a columnar member formed to protrude radially outward from the boundary between the large diameter portion and the small diameter portion.

  The light source side terminal 15 is a terminal to which power for turning on the light source 10 from the lighting device 20 is supplied, and also a portion where the spring portion 40 is disposed. The light source side terminal 15 is provided on the end surface of the light source side attaching portion 12 on the lighting device 20 side, and a cylindrical recess into which the spring portion 40 is inserted is formed. In other words, a columnar protrusion is formed that is inserted into the spring portion 40 formed in a coil shape.

FIG. 4 is a partially enlarged view illustrating the configuration of the lighting device 20 of FIG.
The lighting device 20 controls the electric power supplied to the light source 10 so that light is stably emitted from the light source 10, and the light source 10 is attached to the lighting device 20. As shown in FIGS. 2 and 4, the lighting device 20 includes a lighting device body 21 that forms the outer shape of the lighting device 20, a control unit 22 that adjusts the power supplied to the light source 10, and a path through which power (current) flows. The conductive portion 23 is mainly composed of

  The lighting device main body 21 has a control unit 22 and a conductive unit 23 disposed therein. A mounting convex part 24 to be inserted into the reflecting part 30 and a mounting concave part 25 into which the light source 10 is inserted are formed on the surface of the lighting device main body 21 that faces the reflecting part 30.

  The mounting convex part 24 is a part protruding from the lighting device main body 21 in a columnar shape or a cylindrical shape. On the outer peripheral surface (circumferential surface) of the mounting convex portion 24, a columnar mounting pin 26 protruding outward in the radial direction is provided.

  The attachment recess 25 is a hole having a bottom formed coaxially with the attachment protrusion 24, and is a portion into which the light source side attachment portion 12 of the light source 10 is inserted. The mounting recess 25 has a large-diameter portion formed on the opening side with a large diameter and a small-diameter portion with a small diameter on the bottom side, and a part of the conductive portion 23 is exposed on the bottom surface of the mounting recess 25. is doing. The small diameter portion of the light source side mounting portion 12 in the light source 10 is inserted into the small diameter portion of the mounting recess 25, and the large diameter portion of the light source side mounting portion 12 is inserted into the large diameter portion of the mounting recess 25. Further, between the small diameter portion and the large diameter portion on the inner peripheral surface (circumferential surface) of the mounting recess 25, as shown in FIGS. A joint groove (engagement recess) 27 is provided.

FIG. 5 is a development view illustrating the shape of the lighting-side engagement groove 27 of FIG.
The lighting side engaging groove 27 is a groove-like recess or an elongated hole into which the engaging convex portion 14 of the light source 10 is fitted (engaged), and is along the longitudinal direction of the lighting side engaging groove 27. The engaging projection 14 is movable. An inlet portion 27A extending in the direction in which the light source 10 is inserted and extracted (vertical direction in FIG. 5) into the lighting side engaging groove 27, and an intermediate portion extending in a direction intersecting, preferably orthogonal to, the insertion and extraction direction. 27B and a movable portion 27C that enables the engagement convex portion 14 to be inserted and moved in the extraction direction are provided.

FIG. 6 is a partially enlarged view for explaining the configuration of the reflection side attachment portion 32 of the reflection portion 30 of FIG.
The reflector 30 reflects the light emitted from the light source 10 in a predetermined direction. As shown in FIGS. 1, 2, and 6, the reflection unit 30 mainly includes a reflection surface 31 that reflects light and a reflection-side attachment portion 32 to which the lighting device 20 is attached. Since the lighting device 20 is attached to the reflection unit 30, the direction of the light emitted from the reflection unit 30 to the outside, that is, the variation in the optical axis can be suppressed.

  As shown in FIG. 1, the reflection surface 31 constitutes the front side (left side in FIG. 1) of the reflection unit 30, and the light emitting unit 11 of the light source 10 is disposed therein. Further, the reflecting surface 31 emits light emitted from the light source 10 toward the side of the vehicle lamp 1 (up and down direction in FIG. 1) or rearward (right direction in FIG. 1). The light is reflected toward the front of the lamp 1 (the left direction in FIG. 1). Examples of the reflecting surface 31 include those formed on a parabolic curved surface centering on the light emitting unit 11 in the light source 10 and those formed on a spherical surface centered on the light emitting unit 11.

  As shown in FIGS. 1, 2, and 6, the reflection side attachment portion 32 constitutes the rear side (right side in FIG. 1) of the reflection portion 30, in other words, the lighting device 20 side. The light source 10 is sandwiched between the lighting device 20 and the lighting device 20. The reflection side attachment portion 32 is a substantially cylindrical member extending rearward from the reflection surface 31, and the light source 10 is disposed inside the reflection side attachment portion 32.

  The end portion on the lighting device 20 side of the reflection side attachment portion 32 is provided with an enlarged diameter portion in which the inner diameter is increased in two stages. That is, a small diameter portion having a smaller inner diameter on the reflecting surface 31 side and a larger diameter portion having a larger diameter portion on the lighting device 20 side compared with the inner diameter are provided. The light source side mounting portion 12 of the light source 10 is inserted into the small diameter portion of the enlarged diameter portion, and the mounting convex portion 24 of the lighting device 20 is inserted into the large diameter portion.

  As shown in FIGS. 2 and 6, the reflection side attachment portion 32 is provided with a reflection portion side reference surface (support portion side reference surface) 33, and between the small diameter portion and the large diameter portion of the reflection side attachment portion 32. Is provided with a reflection side engaging groove 34. The reflecting portion side reference surface 33 is a surface provided at the bottom of the small diameter portion of the enlarged diameter portion in the reflecting side attachment portion 32 and is a surface that contacts the light source side reference surface 13 described above.

FIG. 7 is a developed view for explaining the shape of the reflection side engaging groove 34 of FIG.
The reflection side engaging groove 34 is a groove-like recess or a long hole into which the mounting pin 26 of the lighting device 20 is fitted (engaged). As shown in FIG. 7, the reflecting side engaging groove 34 is inserted into and extracted from the inlet 34A extending in the direction (up and down direction in FIG. 7), and the direction intersecting the insertion and extraction direction, preferably Is provided with an engaging portion 34B extending in an orthogonal direction.

  As shown in FIG. 2, the spring portion 40 presses the light source 10 toward the reflecting portion 30 and supplies power from the lighting device 20 to the light source 10. The spring part 40 is formed in a coil shape and has elasticity, and is formed from a conductive material (for example, a metal material such as steel or stainless steel). One end of the spring portion 40 is in mechanical and electrical contact with the light source side terminal 15 of the light source 10, and the other end is in mechanical and electrical contact with the conductive portion 23 of the lighting device 20. Yes.

  Thus, by using the spring portion 40 as a contact terminal for supplying power from the lighting device 20 to the light source 10, even if the light source 10 is moved to the reflecting portion 30 side by the spring portion 40, the spring portion 40 is Since it is in contact with both the light source 20 and the light source 10, the power supply from the lighting device 20 to the light source 10 can be ensured.

  As shown in FIG. 1, the housing 50 constitutes the outer shape of the vehicular lamp 1, and houses the light source 10, the lighting device 20, and the reflector 30 therein. The front surface of the housing 50 (the left surface in FIG. 1) is a surface from which light is emitted from the vehicular lamp 1. Further, a protrusion (not shown) for attaching the vehicular lamp 1 to a vehicle such as an automobile is provided on the outer surface of the housing 50.

Next, an illumination method in the vehicular lamp 1 having the above configuration will be described with reference to FIGS. 1 and 2.
When illumination by the vehicle lamp 1 is performed, power is supplied to the lighting device 20 from the outside of the vehicle lamp 1 (for example, a battery of the vehicle), as shown in FIG. The electric power is supplied to the control unit 22 through the conductive unit 23 of the lighting device 20 and is adjusted to a current and voltage suitable for driving the light source 10. The electric power whose current and voltage are adjusted is supplied to the light source 10 through the conductive portion 23, the spring portion 40 and the light source side terminal 15. When power is supplied to the light source 10, the light source 10 generates light inside the light emitting unit 11, and light is emitted outward from the light emitting unit 11. Of the light emitted from the light source 10, the light emitted toward the opening of the reflection unit 30 is emitted from the front surface of the housing 50 as it is. The light emitted from the light source toward the side or rear, that is, the light emitted toward the reflection surface 31 of the reflection unit 30 is reflected by the reflection surface 31 and emitted from the front surface of the housing 50. The light emitted from the front surface of the housing 50 illuminates a predetermined area in front of the vehicle, for example.

Next, an assembling method according to the feature of the present embodiment will be described with reference to FIGS.
First, as shown in FIG. 2, the light source 10 is attached to the lighting device 20 with the spring portion 40 sandwiched therebetween. The light source side mounting portion 12 of the light source 10 is inserted into the mounting concave portion 25 of the lighting device 20, and the engaging convex portion 14 is inserted into the inlet portion 27 </ b> A of the lighting side engaging groove 27 as shown in FIG. 5. The light source side mounting portion 12 is inserted into the mounting concave portion 25 until the engaging convex portion 14 reaches the end of the inlet portion 27A of the lighting side engaging groove 27. At this time, the spring part 40 arrange | positioned between the light source 10 and the lighting device 20 will be in the compressed state.

  Thereafter, the light source side attaching portion 12 is rotated so that the engaging convex portion 14 enters the intermediate portion 27B, and is rotated until the engaging convex portion 14 reaches the movable portion 27C. When the engaging convex portion 14 reaches the movable portion 27C, the light source 10 is pushed in a direction away from the lighting device 20 (upward in FIG. 5) by the compressed urging force of the spring portion 40, and the engaging convex portion 14 is The movable part 27C is moved in a direction away from the lighting device 20. By doing so, the light source 10 and the lighting device 20 are not easily separated.

  Next, the lighting device 20 is attached to the reflection unit 30 with the light source 10 interposed therebetween. The mounting convex portion 24 of the lighting device 20 is inserted into the enlarged diameter portion of the reflecting side mounting portion 32 of the reflecting portion 30, and the mounting pin 26 of the lighting device 20 is connected to the reflecting side of the reflecting portion 30 as shown in FIG. 7. It is inserted into the inlet 34A of the joint groove 34. The attachment convex portion 24 is inserted into the reflection side attachment portion 32 until the attachment pin 26 reaches the end of the inlet portion 34A of the reflection side engagement groove 34.

  At this time, that is, while the mounting convex portion 24 is being inserted into the reflection side mounting portion 32, the light source side reference surface 13 of the light source 10 and the reflection portion side reference surface 33 of the reflection portion 30 contact each other as shown in FIG. To do. After the light source side reference surface 13 and the reflection portion side reference surface 33 come into contact, the relative positional relationship between the light source 10 and the reflection portion 30 does not change, and the spring portion 40 is compressed and deformed, whereby the lighting device 20. Only continues to be inserted into the reflection side mounting portion 32. Thereafter, the mounting convex portion 24 is rotated so that the mounting pin 26 enters the engaging portion 34B, and is rotated until the mounting pin 26 reaches the end of the engaging portion 34B.

  According to the above configuration, the light source 10 is sandwiched between the lighting device 20 and the reflection unit 30, and the sandwiched light source 10 is pushed toward the reflection unit 30 by the spring unit 40. Thereby, the light source side reference surface of the light source 10 and the support unit side reference surface of the reflection unit 30 come into contact with each other, and the relative position between the light source 10 and the reflection unit 30 is determined. In other words, the position and posture of the light source 10 with respect to the reflection unit 30 are determined. Therefore, it is possible to suppress variation in the direction of light emitted from the reflection unit 30 to the outside, in other words, variation in the optical axis.

  In addition, since the light source 10 is sandwiched between the lighting device 20 and the reflecting portion 30 after the lighting device 20 is attached to the reflecting portion 30, the number of parts can be reduced compared to the case where the light source 10 is directly attached to the reflecting portion 30. In addition, the size of the vehicular lamp 1 can be reduced.

  The assembly of the vehicular lamp 1 can be improved by providing the light source 10 and the lighting device 20 with the engaging convex portion 14 and the lighting side engaging groove 27 that can be combined. When the light source 10 is sandwiched between the lighting device 20 and the reflecting portion 30, the light source 10 is attached to the lighting device 20 by combining the engaging convex portion 14 and the lighting side engaging groove 27, and then the light source 10 is interposed therebetween. The light source 10 can be prevented from falling when the light source 10 is sandwiched between the lighting device 20 and the reflection unit 30 by attaching the reflection unit 30 to the lighting device 20 with the pinch.

  Further, when the reflecting portion side reference surface 33 provided in the reflecting portion 30 and the light source side reference surface 13 provided in the light source 10 are brought into contact with each other, the combined engaging convex portion 14 and lighting side engaging groove are combined. 27, a gap is secured in the pressing direction by the spring portion 40 by the movable portion 27 </ b> C. Therefore, the reflecting portion side reference surface 33 and the light source side reference surface 13 come into contact with each other only by the pressing force of the spring portion 40, and it is possible to prevent an excessive force from being applied to the light source 10, the lighting device 20, and the reflecting portion 30. .

FIG. 8 is a schematic diagram for explaining a dimensional relationship in the light source 10, the lighting device 20, and the reflecting unit 30 in FIG.
The pressing direction of the dimension of the spring portion 40 in the movable section 27C (A ₂ -A _1), may be exemplified those satisfying the following formula (1) and (2). By doing in this way, the reflection part side reference surface 33 and the light source side reference surface 13 can be made to contact reliably.

A ₁ <B _1min −C _max (1)
A ₂ > B _2max −C _min (2)
Here, as shown in FIG. 8, A ₁ is the distance from the upper end surface of the mounting convex portion 24 of the lighting device 20 to the upper end surface of the movable portion 27C (surface closest to the reflecting portion 30), and A ₂ is The distance from the upper end surface of the mounting convex portion 24 to the lower end surface of the movable portion 27C (surface farthest from the reflecting portion 30). B ₁ is the distance from the light source side reference surface 13 of the light source 10 to the upper end surface of the engaging convex portion 14 (the surface closest to the reflecting portion 30), and B ₂ is the engaging convex portion from the light source side reference surface 13. 14 is a distance to the lower end surface (the surface farthest from the reflecting portion 30). C is the distance from the reflecting portion side reference surface 33 in the reflecting portion 30 to the contact surface 35 that contacts the upper end surface of the mounting convex portion 24. In addition, the subscript min indicates a minimum distance on the assumption of dimensional variations that are inevitably generated in manufacturing the light source 10 and the lighting device 20, and the subscript max is similarly the maximum on the assumption of variations. Indicates distance.

In other words, the above formulas (1) and (2) represent the minimum distance B _1min from the end surface on the reflecting portion 30 side of the engaging convex portion 14 to the light source side reference surface 13 as the reflecting portion in the lighting-side engaging groove 27. B _2max from the end surface on the lighting device 20 side to the light source side reference surface 13 of the _{engaging convex} portion 14 is made larger than the maximum distance A ₁ + C _max from the end surface on the 30 side to the reflecting portion side reference surface 33, This indicates that the lighting-side engagement groove 27 is smaller than the minimum distance A ₂ + C _min from the end surface on the lighting device 20 side to the reflecting portion-side reference surface 33.

FIG. 9 is a partially enlarged view illustrating the configuration of a vehicle lamp 101 according to an embodiment different from the vehicle lamp 1 of FIG.
As a member that presses (biases) the light source 10 toward the reflecting portion 30, it is disposed between the light source side terminal 15 of the light source 10 and the conductive portion 23 of the lighting device 20 as in the above-described embodiment. The spring portion 40 may be used, and as shown in FIG. 9, the biasing portion disposed between the mounting convex portion 24 of the lighting device 20 and the flange portion 116 forming the light source side reference surface 13 of the light source 10. The unit 140 may be used. In the case of the configuration shown in FIG. 9, an electrical connection portion 141 that electrically connects the light source side terminal 15 and the conductive portion 23 is provided.

  The urging unit 140 may be a ring-shaped member having elasticity as shown in FIG. 9 or a disc spring. In addition, the electrical connection portion 141 sandwiches the light source side terminal 15 by elasticity, and enables relative movement with the light source side terminal 15 while maintaining electrical connection.

  DESCRIPTION OF SYMBOLS 1,101 ... Vehicle lamp (lamp) 10 ... Light source, 20 ... Lighting device (lighting part), 30 ... Reflection part (support part), 40, 140 ... Spring part (biasing part), 13 ... Light source side reference plane , 14 ... engaging convex part, 27 ... lighting side engaging groove (engaging concave part), 33 ... reflecting part side reference surface (supporting part side reference surface)

Claims (5)

A light source that emits light upon receiving electric power;
A lighting unit for supplying power to the light source;
The lighting unit is attached, and a support unit that sandwiches the light source with the lighting unit,
An urging portion that is disposed between the light source and the lighting portion and presses the light source toward the support portion;
The light source is provided with a light source side reference surface facing the support portion,
The support part is provided with a support part side reference surface facing the light source side reference surface,
The lamp is characterized in that the light source is pushed by the urging portion, and the relative position between the light source and the support portion is determined by the contact between the support portion side reference surface and the light source side reference surface. One of the light source and the lighting part is provided with an engaging convex part that protrudes in a direction intersecting the pressing direction by the urging part,
The other of the light source and the lighting part is provided with an engagement concave part that restricts a relative movement range in the pressing direction between the light source and the lighting part by being combined with the engagement convex part.
A gap is provided in the pressing direction between the engaging convex portion and the engaging concave portion when the support portion side reference surface and the light source side reference surface are in contact with each other. The lamp according to claim 1. The engaging light source is provided with the engaging convex part, and the lighting concave part is provided with the engaging concave part,
In the state where the lighting part is attached to the support part,
The minimum distance from the end surface on the support portion side to the light source side reference surface in the engagement convex portion is larger than the maximum distance from the end surface on the support portion side to the support portion side reference surface in the engagement recess,
The maximum distance from the lighting unit side end surface to the light source side reference surface in the engagement convex portion is smaller than the minimum distance from the lighting unit side end surface to the support unit side reference surface in the engagement recess. The lamp according to claim 2.   The said support part is a reflection part which reflects at least one part of the light radiate | emitted from the said light source, The lamp as described in any one of Claim 1 to 3 characterized by the above-mentioned.   The lamp according to any one of claims 1 to 4, wherein the urging unit is a contact terminal that supplies electric power from the lighting unit to the light source.