Light guide body fixing structure and vehicle lamp

Abstract

Prevent point light and fix light guide. Have: Fixed part, namely housing (10), have keep continuous light guide (20) one end, namely back light guide part (20D) first holding part, namely cylinder part (10G), and keep light guide (20) other end, namely upper light guide part left end and / or lower light guide part left end second holding part, namely upper hole part and / or lower hole part; Clamping part, namely clamping concave part (10Gb) and clamping convex part (20Da), make first holding part and one end mutually clamped and limit one end to front and back direction front side movement; Elastic part (10Gc), produce elastic force on upside and down direction upside and with one end abutment to maintain clamping part clamping; Contact part, namely protruding part (10Gd), in clamping part clamping state in left and right direction both sides make first holding part and one end mutually contact; Abutment part, namely base plate (40), with one end abutment to limit one end to front and back direction rear side movement; And limit part (10Ha), with elastic part (10Gc) abutment to limit elastic part (10Gc) to upside and down direction downside movement.

Description

Technical Field

[0001] This invention relates to a light guide fixing structure and vehicle lighting fixtures. Background Technology

[0002] For example, Patent Document 1 shows a structure in which an extension portion is provided extending outward from the outer edge of the light guide, and the extension portion is fixed to a part away from the light guide by screws such as screws.

[0003] In addition, Patent Document 2 shows the following structure: the light guide has a light-emitting part on the front surface side and is provided with an extension extending from the upper surface side toward the back side, the extension being provided continuously over at least the area corresponding to the light-emitting part, and a holding part that holds a portion of the light guide has a groove for inserting the extension.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2015-18611

[0007] Patent Document 2: Japanese Patent Application Publication No. 2019-145327 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] As in Patent Document 1, a screw-fixed structure secures the extension extending from the light guide, providing adequate fixation. However, this may result in spotlighting, where light leaking from the light guide and directed toward the extension is brighter than its surroundings. On the other hand, in Patent Document 2, to prevent spotlighting, the extension extends to the back side of the light guide. However, since the extension is inserted into the groove of the retaining part, it may not be adequately secured due to vehicle vibrations. Furthermore, commonly known fixing structures include spear-shaped structures that use claws to clamp and hold the inserted component, but these may also not provide adequate fixation in the face of vehicle vibrations.

[0010] The present invention was made in view of the above circumstances, and its object is to provide a light guide fixing structure that can prevent point light and fix the light guide, as well as a vehicle lamp.

[0011] Solution for solving the problem

[0012] To achieve the above objectives, one embodiment of the light guide fixing structure of the present invention comprises: a fixing portion having a first holding portion for holding one end of a continuous light guide and a second holding portion for holding the other end of the light guide; an engaging portion for engaging the first holding portion and the one end to restrict movement of the one end in a first direction; an elastic portion for generating an elastic force in a second direction intersecting the first direction and abutting against the one end to maintain the engaging of the engaging portion; a contact portion for contacting the first holding portion and the one end in a third direction intersecting the first and second directions in the engaged state of the engaging portion; an abutting portion for abutting against the one end to restrict movement of the one end in the other direction of the first direction; and a limiting portion for abutting against the elastic portion to restrict movement of the elastic portion in the other direction of the second direction.

[0013] Alternatively, the light guide may have a protrusion on a second side opposite to the first side that emits light, and the fixing part may have a recess into which the protrusion is inserted.

[0014] Alternatively, the second retaining portion may be formed by a hole into which the other end of the light guide is inserted and fitted.

[0015] Alternatively, the abutment portion may be a substrate on which a light source is mounted, into which light is incident from one end of the light guide.

[0016] In addition, a vehicle lamp according to one aspect of the present invention includes: a light guide, one end of which is continuous with the other end; a light source, which emits light from one end of the light guide; and a fixing part, which mounts the light guide and the light source, wherein the light guide is fixed to the fixing part by the light guide fixing structure.

[0017] Invention Effects

[0018] According to the present invention, a light guide fixing structure that can prevent point light and fix the light guide and a vehicle lamp can be provided. Attached Figure Description

[0019] Figure 1 This is a side view of an example of a vehicle equipped with vehicle lights according to the embodiment.

[0020] Figure 2 This is a front view of the housing of the vehicle lamp constituting the embodiment.

[0021] Figure 3 This is a schematic diagram of the front of the housing of the vehicle lamp constituting the embodiment.

[0022] Figure 4 This is a three-dimensional view of the shell from the front.

[0023] Figure 5 This is a partially enlarged sectional view of the shell.

[0024] Figure 6 This is a front view of the light guide that constitutes the vehicle lamp of the embodiment.

[0025] Figure 7 This is a three-dimensional view of the light guide from the rear.

[0026] Figure 8 This is a magnified 3D view of a portion of the light guide.

[0027] Figure 9 It is a partially enlarged cross-sectional view of the assembled shell and light guide.

[0028] Figure 10 This is a magnified 3D view of the assembly state of the housing and light guide from the front.

[0029] Figure 11 This is a magnified 3D view of the assembly state of the housing and light guide from the rear.

[0030] Figure 12 This is a magnified 3D view of the shell from the front.

[0031] Figure 13 This is a magnified 3D view of the assembly state of the housing and light guide from the front.

[0032] Figure 14 This is a magnified 3D view of the assembly state of the housing and light guide from the front.

[0033] Figure 15 This is the front view of the light guide. Detailed Implementation

[0034] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to these embodiments. Furthermore, the constituent elements in the following embodiments include elements that can and are easily substituted by those skilled in the art, or elements that are substantially the same.

[0035] Figure 1 This is a side view of a vehicle 1 showing an example of a vehicle lamp 100 equipped with the embodiment.

[0036] like Figure 1As shown, vehicle 1 includes a body 2, a running gear 3, and vehicle lights 100. The body 2 has a driver's cab. The body 2 is supported on the running gear 3. The running gear 3 includes: wheels with tires 4; a steering device for changing the direction of travel of vehicle 1; and a braking device for decelerating or stopping the running gear 3. In this embodiment, vehicle 1 includes a side door for getting on and off the body 2 and a rear door for the rear of the body 2. The side door and the rear door are movably supported on the body 2 via hinge mechanisms.

[0037] In the following description, vehicle 1 is assumed to be positioned on ground G parallel to the horizontal plane. The positional relationships of each part are described using terms such as front, rear, up, down, left, and right, with the driver in the cab as the reference point. Front, rear, up, down, and left / right directions refer to the directions when the vehicle's lights are mounted on the vehicle, and are the directions when viewed from the driver's seat in the direction of travel. Left / right directions are also called width directions. Furthermore, in the following description, the front / rear direction is also called the first direction, with the front side designated as one side of the first direction and the rear side as the other side. The up / down direction is also called the second direction that intersects (or is orthogonal to) the first direction, with the upper side designated as one side of the second direction and the lower side as the other side. The left / right direction is also called the third direction that intersects (or is orthogonal to) both the first and second directions, with the right side designated as one side of the third direction and the left side as the other side.

[0038] Figure 2 This is a front view of the housing of the vehicle lamp constituting the embodiment. Figure 3 This is a schematic diagram of the front of the housing of the vehicle lamp constituting the embodiment. Figure 4 This is a three-dimensional view of the shell from the front. Figure 5 This is a partially enlarged sectional view of the shell. Figure 6 This is a front view of the light guide that constitutes the vehicle lamp of the embodiment. Figure 7 This is a three-dimensional view of the light guide from the rear. Figure 8 This is a magnified 3D view of a portion of the light guide.

[0039] In this embodiment, vehicle lights 100 are respectively disposed on the left and right sides of the rear of the vehicle 1. For example, the vehicle lights 100 are taillights (rear combination lights) disposed at the rear of the vehicle body 2; that is, lights that include multiple functions disposed at the rear of the vehicle body 2. For example, the vehicle lights 100 may be a combination of three lights: a parking light, a turn signal light, a daytime running light, a taillight, and a brake light. The vehicle lights 100 are not limited to this and may also be other types of lights such as headlights, daytime lamps, parking lights, turn signal lights, daytime running lights, taillights, and brake lights. In this embodiment, the vehicle lights 100 are disposed across the rear doors of the vehicle body 2. The construction of the vehicle lights 100 disposed on the left side of the rear of the vehicle body 2 and the construction of the vehicle lights 100 disposed on the right side of the rear of the vehicle body 2 are symmetrical in the left-right direction and are substantially the same. The following description will mainly focus on the vehicle light fixture 100 located on the right side of the front of the vehicle body 2. The description of the vehicle light fixture 100 located on the left side of the front of the vehicle body 2 will be brief or omitted.

[0040] The vehicle lamp 100 includes a housing 10, a light guide 20, and a light source 30.

[0041] The housing 10 is a component disposed at the rear of the vehicle lamp 100. The housing 10 is made of an opaque material. The housing 10, together with the front lamp lens (not shown in the figure), divides the space into multiple lamp chambers. These multiple lamp chambers may be, for example, those for parking lights, turn signals, daytime running lights, taillights, brake lights, etc. The housing 10 is also referred to as the mounting part for fixing the light guide 20.

[0042] like Figure 1 , Figure 2 as well as Figure 3 As shown, the housing 10 has an upper part 10A, a lower part 10B, a middle part 10C, a rear part 10D, and an inner housing 80. Viewed from the front, the upper part 10A extends in a left-right direction. Viewed from the front, the lower part 10B extends downward from the right end 10Aa of the upper part 10A and bends to the left. The right end 10Ba of the lower part 10B is connected to the right end 10Aa of the upper part 10A. The middle part 10C connects the upper part 10A and the lower part 10B. The rear part 10D extends rearward from the right ends 10Aa and 10Ba of the upper and lower parts 10A and 10B, respectively. The inner housing 80 is positioned between the upper part 10A and the lower part 10B of the housing 10, closer to the upper part 10A than the middle part 10C. The inner housing 80 houses a light source and is divided into lamp chambers different from those in the housing 10. The inner housing 80 serves as the lamp chamber for fog lights, taillights, reversing lights, etc.

[0043] The upper part 10A has an upper groove 10E that opens to the front and extends in the left-right direction. The right end 10Ea of the upper groove 10E is formed by bending rearward from the right end 10Aa of the upper part 10A toward the rear part 10D. The upper groove 10E is also formed such that its left end 10Eb terminates at the left end 10Ab of the upper part 10A. A hole 10Ac is formed at the left end 10Ab of the upper part 10A, communicating with the left end 10Eb of the upper groove 10E. The hole 10Ac extends in the left-right direction, opening to the right toward the left end 10Eb of the upper groove 10E and closing on the left. The hole 10Ac is also referred to as the second retaining part. Furthermore, a recess 10Ec is formed in the upper groove 10E midway through its extension, near the left end 10Eb, and extends rearward in the left-right direction.

[0044] The lower part 10B has a lower groove 10F that opens forward and extends in the left-right direction. The lower groove 10F is formed such that its right end 10Fa bends rearward toward the rear part 10D from the right end 10Ba of the lower part 10B. The lower groove 10F also has a left end 10Fb that terminates at the left end 10Bb of the lower part 10B. A hole 10Bc is formed at the left end 10Bb of the lower part 10B, communicating with the left end 10Fb of the lower groove 10F. The hole 10Bc extends in the left-right direction, opening to the right toward the left end 10Fb of the lower groove 10F and closing on the left. The hole 10Bc is also referred to as a second retaining part. Furthermore, a recess 10Fc is formed in the lower groove 10F midway through its extension and at its left end 10Eb, recessed toward the rear and extending in the left-right direction.

[0045] The central section 10C forms the rear wall panel of the lamp chamber divided by the housing 10. The central section 10C is equipped with, for example, taillights, brake lights, and turn signals. A hole 90 for arranging a light source is formed in the central section 10C. A reflector 92 is provided in the central section 10C to reflect the light from the light source arranged in the central section 10C.

[0046] The rear portion 10D has a cylindrical portion 10G with a through hole 10Ga extending in the front-rear direction. The cylindrical portion 10G is also referred to as the first retaining portion. On the front side of the through hole 10Ga in the cylindrical portion 10G, the right end 10Ea of the upper groove 10E formed in the upper portion 10A communicates with the right end 10Fa of the lower groove 10F formed in the lower portion 10B. The cylindrical portion 10G has inner wall surfaces in the through hole 10Ga in all directions. Figure 5As shown, at its rear end, the cylindrical portion 10G has an engaging recess 10Gb formed on the inner wall surface above the hole 10Ga, which has a rearward engaging surface 10Gba due to a stepped recess towards the upper side. At its rear end, below the engaging recess 10Gb, the cylindrical portion 10G has a plate-shaped elastic portion 10Gc that extends obliquely towards the rear and upper sides and is flexible in the vertical direction. The cylindrical portion 10G has protrusions 10Gd that protrude from the inner wall surfaces on the right and left sides. The protrusions 10Gd are arranged opposite each other in the left-right direction. The protrusions 10Gd are also referred to as contact portions. In addition, the rear portion 10D has a plurality of pins 10Da that extend in a rod-like shape towards the rear.

[0047] Light guide 20 is also called a light guide, such as Figure 6 as well as Figure 7 As shown, the light guide includes an upper light guide 20A, a lower light guide 20B, and a rear light guide 20D. The upper light guide 20A extends in the left-right direction when viewed from the front. The lower light guide 20B, when viewed from the front, extends downwards from the right end 20Aa of the upper light guide 20A and bends to the left. The right end 20Ba of the lower light guide 20B is connected to the right end 20Aa of the upper light guide 20A. The rear light guide 20D extends rearwards from the right ends 20Aa and 20Ba of the upper and lower light guides 20A and 20B, respectively.

[0048] The upper light guide portion 20A is formed to extend in a rod shape in the left-right direction. The right end 20Aa of the upper light guide portion 20A is bent rearward toward the rear light guide portion 20D. The left end 20Ab of the upper light guide portion 20A is formed such that it can be inserted into the hole 10Ac formed in the left end 10Ab of the upper portion 10A. The left end 20Ab of the upper light guide portion 20A and the hole 10Ac are interlocked by insertion, and the outer shape of the left end 20Ab of the upper light guide portion 20A is formed identically to the inner shape of the hole 10Ac. The left end 20Ab of the upper light guide portion 20A is also referred to as the other end of the light guide 20. Furthermore, a protrusion 20Ac protruding rearward is formed in the middle of the extension of the upper light guide portion 20A, near the left end 20Ab. The protrusion 20Ac is partially formed in the middle of the extension of the upper light guide portion 20A. The protrusion 20Ac is formed to be inserted into the recess 10Ec of the upper groove 10E formed in the upper part 10A of the housing 10. The protrusion 20Ac and the recess 10Ec of the upper light guide 20A are interlocked by insertion, and the outer shape of the protrusion 20Ac is formed identically to the inner shape of the recess 10Ec. The upper light guide 20A has a prism portion 20Ae formed on its rear surface 20Ad. The prism portion 20Ae reflects the light guided into the interior of the upper light guide 20A onto the front surface 20Af of the upper light guide 20A. The front surface 20Af of the upper light guide 20A allows the reflected light to pass through the front side and emit light. The front surface 20Af of the upper light guide 20A is also called the first side surface, and the rear surface 20Ad, which has the prism portion 20Ae formed opposite to the front surface 20Af, is also called the second side surface.

[0049] The lower light guide portion 20B extends in a rod-like shape in the left-right direction. The right end 20Ba of the lower light guide portion 20B is bent rearward toward the rear light guide portion 20D. The left end 20Bb of the lower light guide portion 20B is configured to insert into the hole 10Bc formed in the left end 10Bb of the lower portion 10B. The left end 20Bb of the lower light guide portion 20B and the hole 10Bc are fitted together by insertion, making the outer shape of the left end 20Bb of the lower light guide portion 20B and the inner shape of the hole 10Bc the same. The left end 20Bb of the lower light guide portion 20B is also referred to as the other end of the light guide 20. Furthermore, a protrusion 20Bc protruding rearward is formed in the middle of the extension of the lower light guide portion 20B and at the left end 20Bb. The protrusion 20Bc is partially formed in the middle of the extension of the lower light guide portion 20B. The protrusion 20Bc is formed to be inserted into the recess 10Fc of the lower groove 10F formed in the lower part 10B of the housing 10. The protrusion 20Bc and the recess 10Fc of the lower light guide 20B are fitted together by insertion, and the outer shape of the protrusion 20Bc and the inner shape of the recess 10Fc are formed to be the same. A prism portion 20Be is formed on the rear surface 20Bd of the lower light guide 20B. The prism portion 20Be reflects the light guided into the interior of the lower light guide 20B to the front surface 20Bf of the lower light guide 20B. The front surface 20Bf of the lower light guide 20B allows the reflected light to pass through the front side and emit light. The front surface 20Bf of the lower light guide 20B is also called the first side surface, and the rear surface 20Bd, which is formed with the prism portion 20Be opposite to the front surface 20Bf, is also called the second side surface.

[0050] The rear light guide portion 20D is formed by extending in a rod shape in the front-to-back direction. The front end of the rear light guide portion 20D communicates with the right end 20Aa of the upper light guide portion 20A and the right end 20Ba of the lower light guide portion 20B. The rear light guide portion 20D has outer peripheral surfaces on its outer periphery in the top, bottom, left, and right directions. For example... Figure 8 As shown, the rear light guide portion 20D has a locking protrusion 20Da formed on its rear end and upper outer peripheral surface, which protrudes upward in a stepped manner and has a locking surface 20Daa facing forward. The rear light guide portion 20D has a protrusion 20Db formed at its rear end, protruding towards the rear side of the locking protrusion 20Da. This rear light guide portion 20D is inserted into the cylindrical portion 10G of the housing 10 from its rear end. The rear light guide portion 20D is also referred to as one end of the light guide body 20.

[0051] like Figure 8As shown, the light source 30 is mounted on the surface 40A of the substrate 40. The substrate 40 is equipped with a connector 50 connected to a wiring 50A for energizing the light source 30. The light source 30 irradiates light onto the rear surface 20Dc of the rear light guide portion 20D in the light guide 20. Therefore, the light guide 20 is configured such that the rear surface 20Dc of the rear light guide portion 20D faces the light source 30. The rear surface 20Dc of the rear light guide portion 20D is also referred to as the incident surface. When the light guide 20 is configured with the rear surface 20Dc of the rear light guide portion 20D facing the light source 30, the protrusion 20Db of the light guide 20 comes into contact with the surface 40A of the substrate 40. By the protrusion 20Db coming into contact with the surface 40A of the substrate 40, the distance between the rear surface 20Dc of the rear light guide portion 20D and the light source 30 is appropriately adjusted. The substrate 40 is also referred to as the abutment portion. Additionally, the substrate 40 has a plurality of through holes 40B penetrating the plate surface 40A. The through holes 40B are for inserting pins 10Da formed in the cylindrical portion 10G of the housing 10. By inserting the pins 10Da into the through holes 40B, the substrate 40 is positioned within the cylindrical portion 10G of the housing 10 (see reference). Figure 9 ).

[0052] Figure 9 It is a partially enlarged cross-sectional view of the assembled shell and light guide. Figure 10 This is a magnified 3D view of the assembly state of the housing and light guide from the front. Figure 11 This is a magnified 3D view of the assembly state of the housing and light guide from the rear. Figure 12 This is a magnified 3D view of the shell from the front. Figure 13 This is a magnified 3D view of the assembly state of the housing and light guide from the front. Figure 14 This is a magnified 3D view of the assembly state of the housing and light guide from the front.

[0053] In the vehicle lamp 100 configured as described above, a housing 10, a light guide 20, and a light source 30 are assembled.

[0054] In order to mount the light guide 20 onto the housing 10, such as Figure 9 As shown, the rear surface 20Dc (incident surface) of the rear light guide portion 20D in the light guide 20 is oriented rearward and inserted from the front into the hole 10Ga of the cylindrical portion 10G in the housing 10. When the rear light guide portion 20D is inserted into the hole 10Ga of the cylindrical portion 10G, the engaging protrusion 20Da of the rear light guide portion 20D soon embeds into the engaging recess 10Gb of the hole 10Ga, and the locking surface 20Daa of the engaging protrusion 20Da and the locking surface 10Gba of the engaging recess 10Gb are opposed in the front-rear direction. As a result, the movement of the light guide 20 relative to the housing 10 in the front-rear direction is restricted by the locking surfaces 10Gba and 20Daa.

[0055] Furthermore, when the engaging protrusion 20Da of the rear light guide portion 20D is inserted into the engaging recess 10Gb of the hole 10Ga, the elastic portion 10Gc of the cylindrical portion 10G contacts the lower outer peripheral surface of the rear light guide portion 20D. The elastic portion 10Gc flexes downward and generates an elastic force that wants to return upward. This elastic force pushes the rear light guide portion 20D upward. As a result, the movement of the light guide 20 relative to the housing 10 in the downward direction is restricted, and the engaging state of the engaging protrusion 20Da being inserted into the engaging recess 10Gb is maintained. Therefore, the restriction on the forward movement in the forward direction by the locking surfaces 10Gba and 20Daa is maintained.

[0056] Additionally, when the engaging protrusion 20Da of the rear light guide portion 20D is inserted into the engaging recess 10Gb of the hole 10Ga, as follows: Figure 10 As shown, each protrusion 10Gd of the cylindrical portion 10G contacts the outer peripheral surfaces of the left and right sides of the rear light guide portion 20D. That is, the cylindrical portion 10G and the rear light guide portion 20D are brought into contact with each other in the left-right direction via each protrusion 10Gd. This restricts the movement of the light guide 20 relative to the housing 10 in both left and right directions.

[0057] In addition, such as Figure 9 As shown, the substrate 40, on which the light source 30 is mounted, is mounted on the housing 10 either after the light guide 20 is mounted on the housing 10 or before the light guide 20 is mounted on the housing 10. The pin 10Da of the rear portion 10D of the housing 10 is inserted into the through hole 40B, thereby positioning the substrate 40 on the rear portion 10D from the rear side and fixing it to the rear portion 10D by screws such as screws. Furthermore, when the engaging protrusion 20Da of the rear light guide 20D is inserted into the engaging recess 10Gb of the hole 10Ga, the protrusion 20Db of the rear light guide 20D abuts against the plate surface 40A of the substrate 40. Thus, the movement of the light guide 20 relative to the housing 10 in the rearward direction is restricted, and the distance between the rear surface 20Dc of the rear light guide 20D and the light source 30 is appropriately adjusted.

[0058] In addition to the main structure of the upper part 10A, lower part 10B, middle part 10C, and rear part 10D described above, the housing 10 also includes, for example: Figure 11As shown, a second housing 10H, serving as a substructure, is fixed to the right side of the rear portion 10D by screws or similar fasteners. This second housing 10H has a limiting portion 10Ha that abuts against the elastic portion 10Gc from the lower side in the vertical direction when fixed to the housing 10. The limiting portion 10Ha is formed as an L-shaped rod-like member extending to the left from the second housing 10H, ensuring rigidity. Therefore, the elastic portion 10Gc of the cylindrical portion 10G is restricted to returning downwards by the limiting portion 10Ha. Thus, the light guide 20 maintains the restriction on downward movement caused by the elastic portion 10Gc, thereby maintaining the engagement state where the engaging protrusion 20Da is embedded in the engaging recess 10Gb, and maintaining the restriction on forward movement in the forward and backward directions caused by the locking surfaces 10Gba and 20Daa.

[0059] Furthermore, after the rear light guide portion 20D of the light guide 20 is installed onto the cylindrical portion 10G of the housing 10, as... Figure 12 as well as Figure 13 As shown, the lower light guide portion 20B of the light guide 20 is flexed, and its left end 20Bb is inserted into and fitted into the hole 10Bc formed at the left end 10Bb of the lower portion 10B of the housing 10. Furthermore, when the left end 20Bb of the lower light guide portion 20B is fitted into the hole 10Bc of the lower portion 10B, the lower light guide portion 20B is embedded in the lower groove 10F of the lower portion 10B. Additionally, when the lower light guide portion 20B is embedded in the lower groove 10F, as... Figure 14 As shown, the protrusion 20Bc of the lower light guide portion 20B is inserted into the recess 10Ec formed in the lower groove 10F of the lower part 10B. Similarly, although not shown in the figure, after the rear light guide portion 20D of the light guide 20 is installed on the cylindrical portion 10G of the housing 10, the upper light guide portion 20A of the light guide 20 is bent, and the left end 20Ab is inserted and fitted into the hole 10Ac formed in the left end 10Ab of the upper part 10A of the housing 10. Furthermore, when the left end 20Ab of the upper light guide portion 20A is fitted into the hole 10Ac of the upper part 10A, the upper light guide portion 20A is embedded in the upper groove 10E of the upper part 10A. In addition, when the upper light guide portion 20A is embedded in the upper groove 10E, the protrusion 20Ac of the upper light guide portion 20A is inserted into the recess 10Ec formed in the upper groove 10E of the upper part 10A.

[0060] Thus, the housing 10, light guide 20, and light source 30 are assembled to form a vehicle lamp 100. In the vehicle lamp 100, light from the light source 30 enters from the rear surface 20Dc of the rear light guide portion 20D in the light guide 20, branches, and is guided to the upper light guide portion 20A and the lower light guide portion 20B. Furthermore, in the upper light guide portion 20A, light guided into the interior of the upper light guide portion 20A is reflected by the prism portion 20Ae towards the front surface 20Af of the upper light guide portion 20A, which emits light. On the other hand, in the lower light guide portion 20B, light guided into the interior of the lower light guide portion 20B is reflected by the prism portion 20Be towards the front surface 20Bf of the lower light guide portion 20B, which emits light.

[0061] Furthermore, in the above embodiment, the light guide 20 is described as having an upper light guide portion 20A and a lower light guide portion 20B extending bifurcatedly from the rear light guide portion 20D. However, it is also possible for the light guide 20 to have only the upper light guide portion 20A extending from the rear light guide portion 20D, or for only the lower light guide portion 20B extending from the rear light guide portion 20D. When the housing 10 has a structure where only the upper light guide portion 20A extends from the rear light guide portion 20D, an upper portion 10A is formed having an upper groove 10E into which the upper light guide portion 20A is inserted. Similarly, when the housing 10 has a structure where only the lower light guide portion 20B extends from the rear light guide portion 20D, a lower portion 10B is formed having a lower groove 10F into which the lower light guide portion 20B is inserted.

[0062] Thus, the light guide fixing structure of this embodiment includes: a housing 10 serving as a fixing part, having a first holding part (cylindrical part 10G) for holding one end (rear light guide part 20D) of the continuous light guide 20 and a second holding part (hole part 10Ac of upper part 10A and / or hole part 10Bc of lower part 10B) for holding the other end (left end 20Ab of upper light guide part 20A and / or left end 20Bb of lower light guide part 20B); engaging parts (engaging recess 10Gb and engaging protrusion 20Da) that engage the first holding part with one end to restrict the movement of one end in a first direction (front side in the front-rear direction); elasticity The first retaining portion 10Gc generates an elastic force on one side of the second direction (upper side of the vertical direction) that intersects with the first direction and abuts against one end to maintain the engagement of the engaging portion; the contact portion (protrusion 10Gd) makes the first retaining portion and one end contact each other on both sides of the third direction (left-right direction) that intersects with the first and second directions when the engaging portion is engaged; the abutting portion (substrate 40) abuts against one end to restrict the movement of one end to the other side of the first direction (rear side of the front-back direction); and the limiting portion 10Ha abuts against the elastic portion 10Gc to restrict the movement of the elastic portion 10Gc to the other side of the second direction (lower side of the vertical direction).

[0063] Therefore, the light guide fixing structure of this embodiment restricts and holds one end of the continuous light guide 20 relative to the first holding portion of the housing 10 in terms of forward, backward, up, down, left, and right movements, while holding the other end relative to the second holding portion of the housing 10. In this way, the light guide fixing structure of this embodiment does not require the use of screws or other screws for fixing; by restricting the movement of the light guide 20 in the forward, backward, up, down, left, and right movements, one end and the other end can be held. As a result, according to the light guide fixing structure of this embodiment, one end and the other end of the light guide 20 can be held, and fixing is performed without the use of screws or other screws at the midway point of the light guide 20 and at one end and the other end, thus preventing spotlighting and fixing the light guide 20 to the housing 10.

[0064] In addition, in the light guide fixing structure of the embodiment, the light guide 20 has protrusions 20Ac and 20Bc on a second side (rear surface 20Ad, 20Bd) opposite to the first side side (front surface 20Af of the upper light guide 20A and / or front surface 20Bf of the lower light guide 20B) and the housing 10 has recesses 10Ec and 10Fc for inserting the protrusions.

[0065] Therefore, the light guide fixing structure of the embodiment holds the light guide 20 in the housing 10 by inserting the protrusions 20Ac and 20Bc of the light guide 20 into the recesses 10Ec and 10Fc of the housing 10. The protrusions 20Ac and 20Bc are provided on a second side opposite to the first side of the light guide 20 that emits light, thus suppressing spot light and holding the light guide 20 in the housing 10. As a result, according to the light guide fixing structure of the embodiment, spot light can be prevented, and the light guide 20 is fixed relative to the housing 10. Furthermore, the protrusions 20Ac and 20Bc are preferably formed on a straight-shaped portion or a portion similar to a straight shape between one end and the other end of the light guide 20. If the protrusions 20Ac and 20Bc are provided on a curved portion, they may affect the reflection of the prism portions 20Ae and 20Be formed on the second surface of the light guide 20; the light guide fixing structure of the embodiment prevents this.

[0066] Figure 15 This is the front view of the light guide. Figure 15The light guide 120 shown is the same component as the light guide 20. The light guide 120 has an upper light guide portion 120A, a lower light guide portion 120B, and a rear light guide portion 120D. The upper light guide portion 120A and the lower light guide portion 120B have the same structure and function as the upper light guide portion 20A and the lower light guide portion 20B. The rear light guide portion 120D extends rearward from the right end of the upper light guide portion 120A and the lower light guide portion 120B, which are connected to each other. As described above, a light source is disposed in the rear light guide portion 120D at a position opposite to the end face 120Da. In the light guide 120, light output from the light source enters from the end face 120Da, and the incident light branches into the upper light guide portion 120A and the lower light guide portion 120B through the rear light guide portion 120D. Thus, the light guide 120 guides light incident from one end face 120Da to both the upper light guide portion 120A and the lower light guide portion 120B, and emits it from the emission surfaces of the upper light guide portion 120A and the lower light guide portion 120B. In this way, when the light guides 20 and 120 are configured such that the upper light guide portions 20A and 120A and the lower light guide portions 20B and 120B extend bifurcatedly from the rear light guide portions 20D and 120D, and are configured to guide light from one incident surface to multiple linear light guide portions, the light guide can be properly fixed.

[0067] In addition, in the light guide fixing structure of the embodiment, the second holding part is formed by holes 10Ac and 10Bc into which the other end of the light guide 20 is inserted and fitted.

[0068] Therefore, according to the light guide fixing structure of the embodiment, by inserting and fitting the other end of the light guide 20 into the holes 10Ac and 10Bc, the other end is held in place without using screws or other screws, thereby preventing spot light and fixing the light guide 20 relative to the housing 10.

[0069] In addition, in the light guide fixing structure of the embodiment, the abutment part is a substrate 40 on which a light source 30 that receives light from one end of the light guide 20 is mounted.

[0070] Therefore, according to the light guide fixing structure of the embodiment, since the substrate 40 constitutes the abutment part, the light guide 20 can be fixed to the housing 10 without increasing the number of parts.

[0071] Additionally, the vehicle lamp 100 of the embodiment includes: a light guide 20, one end of which is continuous with the other end; a light source 30, which emits light from one end of the light guide 20; and a housing 10, on which the light guide 20 and the light source 30 are mounted, the light guide 20 being fixed to the housing 10 by the aforementioned light guide fixing structure.

[0072] Therefore, the vehicle lamp 100 of the embodiment can prevent spotlighting and fix the light guide 20.

[0073] Symbol Explanation

[0074] 10—Housing (fixed part), 10Ac, 10Bc—Hole (second holding part), 10Ec, 10Fc—Recess, 10G—Cylinder (first holding part), 10Gb—Engaging recess (engaging part), 10Gc—Elastic part, 10Gd—Protrusion (contact part), 10Ha—Restriction part, 20, 120—Light guide, 20Ab, 20Bb—Left end (other end), 20Ac, 20Bc—Protrusion, 20Ad, 20Bd—Rear surface (second side), 20Af, 20Bf—Front surface (first side), 20D—Rear light guide (one end), 20Da—Engaging protrusion (engaging part), 30—Light source, 40—Substrate (abutment part), 100—Vehicle lamp.

Claims

1. A light guide fixing structure, characterized in that, have: The fixing part has a first holding part that holds one end of a continuous light guide and a second holding part that holds the other end of the light guide; The engaging portion engages the first retaining portion and the one end portion with each other, thereby restricting the movement of the one end portion in a first direction; An elastic portion generates an elastic force in one of the second directions intersecting the first direction and abuts against the one end, restricting the movement of the one end in the other direction of the second direction and maintaining the engagement of the engaging portion; The contact portion, in the engaged state of the engaging portion, causes the first retaining portion to contact the first end in both third directions intersecting the first direction and the second direction, and restricts the movement of the first end in both third directions. A stop portion that abuts against one end to restrict movement of the one end in the opposite direction of the first direction; and A limiting part abuts against the elastic part to restrict the movement of the elastic part in the other direction of the second direction.

2. The light guide fixing structure according to claim 1, characterized in that, The light guide has a protrusion on a second side opposite to the first side that emits light, and the fixing part has a recess into which the protrusion is inserted.

3. The light guide fixing structure according to claim 1, characterized in that, The second retaining portion is formed by a hole into which the other end of the light guide is inserted and fitted.

4. The light guide fixing structure according to claim 1, characterized in that, The abutment portion is a substrate on which a light source is mounted, into which light is incident from one end of the light guide.

5. A vehicle lamp, characterized in that, have: A light guide, with one end continuous to the other; A light source, which emits light from one end of the light guide; and The fixing part, which mounts the light guide and the light source, The light guide is fixed to the fixing part by the light guide fixing structure as described in claim 1.

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