Lighting device

Abstract

To provide a lighting device capable of properly holding a light guide. [Solution] The lighting device 1 comprises a light-emitting element 14, a rod-shaped light guide 30 that transmits the light emitted by the light-emitting element 14, and a housing 2 that houses the light-emitting element 14 and holds the light guide 30 at a predetermined light-receiving position. The housing 2 comprises a first housing 40 that clamps the light guide 30 in an intersecting direction that intersects the axial direction of the light guide 30 and has a clamping portion 44 that is displaceable in the said intersecting direction, and a second housing 50 that houses the first housing 40 inside and applies force to the clamping portion 44 in a direction that causes the clamping portion 44 to press against the light guide 30. The clamping portion 44 of the first housing 40 has a protruding portion 46 that projects toward the light guide 30 and presses against the light guide 30.

Description

Technical Field

[0001] The present invention relates to a lighting device including a light emitter, a rod-shaped light guide, and a housing that houses the light emitter and holds the light guide at a predetermined light-receiving position.

Background Art

[0002] Conventionally, a lighting device has been proposed that is configured to irradiate the surroundings with light emitted from a light emitter such as an LED through a rod-shaped light guide. This type of lighting device is used, for example, as a lamp mounted inside or outside a vehicle such as an automobile (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described conventional lighting device, the rod-shaped light guide is press-fitted into an annular support member, and the support member is locked to the housing, thereby fixing the light guide to the housing. However, depending on the magnitude of the dimensional tolerances (so-called manufacturing variations) of the light guide, the support member, and the housing, for example, the holding force of the light guide by the above-described press-fitting and locking may be insufficient, and the light guide may be displaced by an external force such as vibration. From the viewpoint of properly exhibiting the function of the lighting device, it is desirable to suppress such displacement of the light guide.

[0005] One object of the present invention is to provide a lighting device capable of properly holding a light guide.

Means for Solving the Problems

[0006] In order to achieve the above-described object, the lighting device according to the present invention is characterized as follows.

[0007] A lighting device comprising a light-emitting element, a rod-shaped light guide that transmits light emitted by the light-emitting element, and a housing that houses the light-emitting element and holds the light guide at a predetermined light-receiving position, The aforementioned housing is A first housing having a clamping portion that sandwiches the light guide in an intersecting direction that intersects the axial direction of the light guide and is displaceable in the intersecting direction, The device comprises a second housing that houses the first housing inside and applies force to the clamping portion in a direction that causes the clamping portion to press against the light guide body, It must be a lighting device. [Effects of the Invention]

[0008] According to the lighting device of the present invention, a rod-shaped light guide is positioned at a predetermined light-receiving position, with the clamping portion of the first housing sandwiched between the clamping portion and the clamping portion pressed against the light guide by the second housing. As a result, regardless of the magnitude of manufacturing variations in the light guide and housing (for example, even if there is a gap between the light guide and the clamping portion due to manufacturing variations), the second housing presses the clamping portion against the light guide, allowing the light guide to be properly held by the clamping portion. In other words, the light guide is held in a double position by the first and second housings. Therefore, the lighting device of the present invention can properly hold the light guide.

[0009] The present invention has been briefly described above. Further details of the present invention will be clarified by referring to the accompanying drawings and reading through the embodiments for carrying out the invention described below. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a perspective view showing a lighting device according to an embodiment of the present invention. [Figure 2] Figure 2 is an exploded perspective view of the lighting device shown in Figure 1. [Figure 3] Figure 3 is a side view of the spacer shown in Figure 2. [Figure 4] Figure 4 is a top view of the adapter shown in Figure 2. [Figure 5] Figure 5 is a side view of the lighting device shown in Figure 1. [Figure 6] Figure 6 is a cross-sectional view of AA in Figure 5. [Figure 7] Figure 7 is a cross-sectional view of BB in Figure 5. [Figure 8] Figure 8 is a cross-sectional view of the CC shown in Figure 7. [Figure 9] Figure 9 is an enlarged view of section D in Figure 8. [Modes for carrying out the invention]

[0011] <Embodiment> Hereinafter, an embodiment of the lighting device 1 of the present invention will be described with reference to the drawings. The lighting device 1 shown in Figure 1 is a device used as a light fixture mounted inside or outside a vehicle such as an automobile, and is configured to irradiate the surroundings with light emitted from an LED 14 (see Figures 2 and 8) via a rod-shaped light guide 30 (see Figures 1, 2 and 8, etc.). For example, by emitting the light irradiated from the light guide 30 to the surroundings through a narrow slit-shaped opening (not shown) provided in a panel member of the vehicle, etc., a linear ambient lighting with excellent decorative properties can be realized.

[0012] For the sake of explanation, as shown in Figure 1, we define "front," "rear," "left," "right," "up," and "down." The "front-rear direction," "left-right direction," and "up-down direction" are orthogonal to each other. The front-rear direction, left-right direction, and up-down direction do not necessarily have to coincide with the front-rear direction, left-right direction, and up-down direction of the vehicle on which the lighting device 1 is mounted. The "up-down direction" coincides with the "axial direction of the light guide" of the present invention, and the "left-right direction" coincides with the "intersecting direction that intersects the axial direction" of the present invention.

[0013] As shown in FIG. 2, the lighting device 1 includes an LED unit 10, a rod-shaped light guide 30 that transmits the light emitted by the LEDs 14 in the LED unit 10, a spacer 40 that holds the light guide 30, and an adapter 50 that houses the spacer 40 therein and connects the spacer 40 and the LED unit 10. Here, the LED unit 10, the spacer 40, and the adapter 50 constitute the housing 2 of the lighting device 1 (see FIG. 1). The spacer 40 and the adapter 50 respectively correspond to the "first housing" and the "second housing" of the present invention. Hereinafter, the configurations of each component constituting the lighting device 1 will be described in order.

[0014] First, the LED unit 10 will be described. As shown in FIGS. 2 and 8, the LED unit 10 includes a housing 11, a bus bar 12 housed in the housing 11, a substrate 13 housed in the housing 11, LEDs 14 mounted on the substrate 13, and a cover 15 attached to the housing 11.

[0015] The housing 11 is a resin molded body and integrally includes a substantially rectangular cylindrical connector portion 16 extending in the front-rear direction and a substantially rectangular cylindrical LED housing portion 17 located on the front side of the connector portion 16 and extending in the front-rear direction. The LED housing portion 17 has an open upper shape. The metal bus bar 12 is housed in the housing 11 straddling the connector portion 16 and the LED housing portion 17, and the substrate 13 is housed in the LED housing portion 17. The LEDs 14 mounted on the substrate 13 are exposed to the outside through the upper opening of the LED housing portion 17. A vehicle-side connector (not shown) is fitted into the connector portion​​​The cover 15 is attached to the LED housing portion 17 of the housing 11 so as to cover the LED housing portion 17, and functions to protect the substrate 13 and the LED 14 housed in the LED housing portion 17. The cover 15 is a resin molded body, has a substantially rectangular box shape extending in the front-rear direction, and the rear end of the cover 15 is open. On the upper wall of the cover 15, a substantially cylindrical opening 19 is formed corresponding to the LED 14 in the housing 11 so as to protrude upward and communicate the inside and outside of the cover 15 in the vertical direction. On the left and right side walls of the cover 15, a pair of left and right locking holes 21 and a pair of left and right locking protrusions 22 are formed so as to be arranged in the front-rear direction. The pair of left and right locking protrusions 22 will engage with a pair of left and right locking holes 57 of the adapter 50 described later. The cover 15 is attached to the LED housing portion 17 by sliding backward with respect to the LED housing portion 17 from the front side. In the state where the cover 15 is completely attached to the LED housing portion 17, the locking hole 21 of the cover 15 and the locking protrusion 18 of the LED housing portion 17 are engaged. Thereby, the cover 15 is prevented from coming off (separating) forward from the housing 11 (LED housing portion 17). In the LED unit 10 in which the cover 15 is attached to the LED housing portion 17, the LED 14 housed in the LED housing portion 17 is exposed to the outside through the upper opening of the LED housing portion 17 and the opening 19 of the cover 15 (see FIG. 8).

[0017] Next, the spacer 40 will be described. The spacer 40 is a resin molded body, and as shown in FIGS. 2, 3, and 8, integrally includes a cylindrical small-diameter portion 41 extending in the vertical direction and a substantially cylindrical large-diameter portion 42 located above the small-diameter portion 41 and extending in the vertical direction. Inside the small-diameter portion 41, a through-hole having a circular cross-section extending in the vertical direction is formed, and at the lower end opening edge of the small-diameter portion 41, a flange portion 41a extending radially inward over the entire circumferential direction of the small-diameter portion 41 is formed (see FIGS. 8 and 9).

[0018] The large-diameter portion 42 has a flat plate-shaped slit 43 that crosses the left-right central part of the large-diameter portion 42 vertically from the upper end to near the lower end, dividing the large-diameter portion 42 into left and right halves. The formation of this slit 43 creates a pair of left and right clamping portions 44 that are spaced apart and facing each other on both sides of the slit 43.

[0019] Each of the left and right clamping portions 44 is an elastic piece extending upward in a cantilevered manner from the lower end of the large-diameter portion 42, and is displaceable by elastic deformation in the left-right direction (the direction in which the distance between the left and right clamping portions 44 increases or decreases). On the opposing surfaces of the left and right clamping portions 44 (planes extending in the vertical and front-back directions), a pair of left and right light guide housing recesses 45, which are semicircular in shape and extend in the vertical direction, are formed so as to face each other in the left-right direction (see also Figure 7). The lower ends of each of the left and right light guide housing recesses 45 are continuous in the vertical direction with no step difference with respect to the through hole of the small-diameter portion 41 (see Figure 8). A rod-shaped light guide 30 with a circular cross-section will be housed in the vertically extending, substantially circular space defined by the left and right light guide housing recesses 45, and in the through hole of the small-diameter portion 41 (see Figure 8). On the inner surface of each of the left and right light guide housing recesses 45 (the inner cylindrical surface facing the outer surface of the light guide 30), there are multiple locations (two in this example) in the circumferential direction, each of which is a projection 46 extending in the vertical direction (see Figures 7 and 8). Each projection 46 presses into contact with the light guide 30 located between the left and right light guide housing recesses 45.

[0020] As shown in Figures 2 and 3, guide ribs 47 are formed on the front-rear edges of the opposing surfaces of the left and right clamping portions 44, projecting outward in the front-rear direction and extending vertically. As a result, on the front and rear sides of the left and right clamping portions 44, the left and right pairs of guide ribs 47 provided on each pair of left and right clamping portions 44 are positioned opposite each other with a gap in the left-right direction. As shown in Figure 3, the left-right outer surface 47a of each guide rib 47 is slightly inclined with respect to the vertical direction, moving outward in the left-right direction as you move from the bottom to the top. Therefore, the gap between the left-right outer surface 47a of the left and right pairs of guide ribs 47 positioned opposite each other in the left-right direction gradually increases as you move from the bottom to the top.

[0021] As shown in Figure 2, a locking piece 48 is formed on each of the upper ends of the pair of left and right clamping portions 44. Each locking piece 48 consists of a first portion that extends outward in the left-right direction from the upper end of the clamping portion 44, and a second portion that hangs down from the extended end of the first portion. A locking hole 49 is formed in the second portion of the locking piece 48, penetrating in the plate thickness direction (left-right direction). The locking hole 49 will engage with a locking projection 55 of the adapter 50, which will be described later.

[0022] Next, the adapter 50 will be described. The adapter 50 is a resin molded body and has a roughly rectangular cylindrical main body 51 that extends vertically, as shown in Figure 2, etc. The spacer 40 will be housed inside the main body 51 (see Figure 8, etc.). As shown in Figures 6 to 8, a flat partition wall 52 is formed inside the main body 51 near the lower end, dividing the internal space of the main body 51 into two vertical sections. The partition wall 52 has a circular through-hole 53 that penetrates vertically, corresponding to the large diameter portion 42 of the spacer 40 housed inside the main body 51 (see Figures 4 and 7). As shown in Figures 2 and 4, on the inner surfaces (planes) of the front and rear walls that constitute the main body 51, a pair of vertically extending ribs 54 are provided on the left and right sides, opposite each other with a gap in the left and right direction, corresponding to a pair of left and right guide ribs 47 of the spacer 40. The lower ends of each rib 54 are connected to the partition wall 52 (see Figure 6). The distance between the pair of left and right ribs 54 is approximately equal to the distance between the left and right outer surfaces 47a of the pair of left and right guide ribs 47 of the spacer 40 (see Figure 6).

[0023] A pair of locking protrusions 55 are formed on the outer surfaces of the upper ends of the left and right walls that constitute the main body 51. A pair of substantially flat locking pieces 56 are formed on the lower edges of the left and right walls that constitute the main body 51, so as to extend downward and face each other with a gap between them in the left-right direction. A locking hole 57 is formed in each locking piece 56 that penetrates in the thickness direction (left-right direction). The configuration of each component that constitutes the lighting device 1 has been described above.

[0024] Next, the assembly procedure for the lighting device 1 will be described. In order to assemble the lighting device 1, first, the rod-shaped light guide 30 is held in the spacer 40. To this end, the light guide 30 is inserted from above into the space with a substantially circular cross-section extending vertically, defined by the pair of left and right light guide housing recesses 45 provided in the pair of left and right clamping portions 44 of the spacer 40, and then into the through hole of the small-diameter portion 41 that is continuous with the lower side of that space. This insertion continues until the tip 30a of the light guide 30 (see Figure 2) abuts against the flange portion 41a of the small-diameter portion 41 of the spacer 40 (see Figures 8 and 9). When the light guide 30 is secured to the spacer 40, as shown in Figure 8, the tip 30a of the light guide 30 abuts against the flange portion 41a of the small-diameter portion 41 of the spacer 40, and the light guide 30, located between the pair of left and right light guide housing recesses 45, is held between the pair of left and right light guide housing recesses 45 (more specifically, multiple protruding portions 46). In other words, the light guide 30 is doubly held by the spacer 40 and the adapter 50. In this way, by abutting the tip 30a of the light guide 30 against the flange portion 41a of the small-diameter portion 41 of the spacer 40, the light guide 30 can be positioned at the desired light-receiving position when the lighting device 1 is assembled (see Figure 8).

[0025] Next, the spacer 40 holding the light guide 30 is stored in the adapter 50. For this purpose, the spacer 40 holding the light guide 30 is inserted into the main body 51 of the adapter 50 from above. This insertion proceeds such that the lower end of the large diameter portion 42 of the spacer 40 is positioned within the through hole 53 of the partition wall 52 of the adapter 50 (see Figures 7 and 8), and that the left and right outer surfaces 47a of the left and right pair of guide ribs 47 on the front and rear sides of the spacer 40 (adapter 50) are sandwiched between the left and right pair of ribs 54 (see Figure 6). During this insertion process, due to the inclination of the left-right outer surfaces 47a of each guide rib 47 as described above, as the spacer 40 approaches the completed storage position within the adapter 50, the left and right pair of left-right outer surfaces 47a receive inward pressure from the left and right pair of ribs 54, causing the left and right pair of clamping portions 44 (i.e., the left and right pair of light guide housing recesses 45) to gradually displace (elastically deform) inward in the left and right direction (i.e., in a direction toward each other). As a result, the light guide 30 located between the left and right pair of light guide housing recesses 45 is pressed against by the multiple protrusions 46 provided in the light guide housing recesses 45.

[0026] When the spacer 40 is fully stored in the adapter 50, the pair of left and right locking holes 49 on the spacer 40 and the pair of left and right locking protrusions 55 on the adapter 50 are engaged (see Figure 8, etc.). This prevents the spacer 40 from coming out (separating) upward from the adapter 50. The tip 30a of the light guide 30, held by the spacer 40 stored in the adapter 50, is exposed to the outside through the lower end opening of the small diameter portion 41 (see Figure 8). In this way, by storing the spacer 40 in the adapter 50, the pair of left and right clamping portions 44 (more specifically, the multiple protruding portions 46) can be naturally pressed into contact with the light guide 30. Furthermore, because the protruding portions 46 are pressed into contact with the light guide 30 in this way, it becomes easier to control the direction of the force exerted by the clamping portions 44 (light guide housing recesses 45) on the light guide 30 (i.e., the direction of protrusion of the protruding portions 46) compared to when the light guide housing recesses 45 of the clamping portions 44 simply make surface contact with the light guide 30. This prevents, for example, the light guide 30 from being held in a tilted position relative to the target orientation. As a result, the light guide 30 can properly transmit the light emitted by the LED 14.

[0027] Next, the adapter 50 containing the spacer 40 is assembled to the LED unit 10, on which the cover 15 is mounted in the LED housing 17. To do this, the adapter 50 is assembled to the cover 15 such that the small-diameter portion 41 of the spacer 40 is inserted into the opening 19 of the cover 15 of the LED unit 10 from above, and the pair of left and right locking pieces 56 of the adapter 50 cover both left and right side walls of the cover 15. Once the assembly of the adapter 50 to the cover 15 (LED unit 10) is complete, the assembly of the lighting device 1 is complete, and the lighting device 1 shown in Figure 1 is obtained.

[0028] In the assembled state of the lighting device 1, as shown in Figures 5 and 8, the locking hole 57 of the adapter 50 and the locking projection 22 of the cover 15 are engaged. This prevents the adapter 50 from coming loose (separating) upward from the cover 15 (i.e., the LED unit 10). The tip 30a of the light guide 30, which is held in the spacer 40 housed in the adapter 50, is positioned at a desired light-receiving position relative to the LED 14, so as to be directly above and adjacent to the LED 14 in the LED unit 10.

[0029] <Effects and Actions> As described above, according to the lighting device 1 of this embodiment, the rod-shaped light guide 30 is held between the clamping portion 44 of the first housing (spacer 40), and the clamping portion 44 is pressed against the light guide 30 by the second housing (adapter 50), and is positioned at a predetermined light-receiving position. As a result, regardless of the magnitude of manufacturing variations in the light guide 30 and the housing 2 (for example, even if there is a gap between the light guide 30 and the clamping portion 44 due to manufacturing variations), the second housing 50 presses the clamping portion 44 against the light guide 30, thereby properly holding the light guide 30 with the clamping portion 44. Therefore, the lighting device 1 of this embodiment can properly hold the light guide 30.

[0030] Furthermore, according to the lighting device 1 of this embodiment, the clamping portion 44 of the first housing 40 has a protruding portion 46 that projects toward the light guide 30 and presses against and contacts the light guide 30. Because this protruding portion 46 presses against the light guide 30, it becomes easier to control the direction of the force exerted by the clamping portion 44 on the light guide 30 (i.e., the direction of protrusion of the protruding portion 46) compared to the case where the clamping portion 44 simply makes surface contact with the light guide 30. As a result, for example, it is possible to suppress the light guide 30 from being held in a tilted position relative to the target position.

[0031] Furthermore, according to the lighting device 1 of this embodiment, by performing the operation of storing the first housing 40 inside the second housing 50, the clamping portion 44 can be naturally pressed into contact with the light guide 30. This improves the work efficiency of the production of the lighting device 1.

[0032] Furthermore, according to the lighting device 1 of this embodiment, the light guide 30 can be positioned at the light-receiving position by abutting it against the positioning wall portion (flange portion 41a) of the first housing 40. For example, the light guide 30 can be positioned so that the end face of the tip 30a of the light guide 30 is adjacent to the light-emitting element (LED 14). This makes it easier to position the light guide 30, thereby improving the work efficiency of the production of the lighting device 1.

[0033] <Other forms> It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the embodiments described above, and can be modified, improved, etc. as appropriate. Furthermore, the material, shape, dimensions, number, placement, etc. of each component in the embodiments described above are arbitrary and not limited as long as they can achieve the present invention.

[0034] For example, in the above embodiment, the left-right outer surfaces 47a of the pair of guide ribs 47 provided on the clamping portion 44 of the spacer 40 are slightly inclined with respect to the vertical direction in a direction that moves outward in the left-right direction as you move from the bottom to the top (see Figure 3). In contrast, the left-right outer surfaces 47a of the pair of guide ribs 47 may not be inclined in this way, and the pair of ribs 54 of the adapter 50 that engage with the guide ribs 47 may be slightly inclined with respect to the vertical direction in a direction that moves outward in the left-right direction as you move from the bottom to the top. Even if the pair of ribs 54 are inclined, the left and right pair of clamping portions 44 (more specifically, the multiple protruding portions 46) can be naturally pressed into contact with the light guide body 30 when the spacer 40 is stored in the adapter 50.

[0035] Herein, the features of the embodiments of the lighting device 1 according to the present invention described above are briefly summarized and listed below in [1] to [5].

[0036] [1] A lighting device (1) comprising a light-emitting element (14), a rod-shaped light guide (30) that transmits the light emitted by the light-emitting element (14), and a housing (2) that houses the light-emitting element (14) and holds the light guide (30) at a predetermined light-receiving position, The aforementioned housing (2) is A first housing (40) has a clamping portion (44) that sandwiches the light guide (30) in an intersecting direction that intersects the axial direction of the light guide (30) and is displaceable in the intersecting direction, The present invention comprises a second housing (50) which houses the first housing (40) inside and applies force to the clamping portion (44) in a direction that causes the clamping portion (44) to press against the light guide (30), Lighting device (1).

[0037] In the lighting device with the configuration described in [1] above, a rod-shaped light guide is positioned at a predetermined light-receiving position, with the clamping portion of the first housing sandwiched between the clamping portion and the clamping portion pressed against the light guide by the second housing. This ensures that the light guide is properly held by the clamping portion regardless of the magnitude of manufacturing variations in the light guide or housing (for example, even if there is a gap between the light guide and the clamping portion due to manufacturing variations), as the second housing presses the clamping portion against the light guide. In other words, the light guide is held in a double position by the first and second housings. Therefore, the lighting device with this configuration can properly hold the light guide.

[0038] [2] In the lighting device (1) described in [1] above, The clamping portion (44) of the first housing (40) is The light guide (30) has a protruding portion (46) that extends toward the light guide (30) and presses against and makes contact with the light guide (30), Lighting device (1).

[0039] According to the lighting device with the configuration described in [2] above, the clamping portion of the first housing has a projection that protrudes toward the light guide. When this projection presses against the light guide, it becomes easier to control the direction of the force exerted by the clamping portion on the light guide (i.e., the direction of the projection) compared to when the clamping portion simply makes surface contact with the light guide. This makes it possible to suppress, for example, the light guide from being held in a tilted position relative to the target position. Therefore, the light guide can properly transmit the light emitted by the light emitter.

[0040] [3] In the lighting device (1) described in [2] above, The aforementioned protruding portion (46) is Having a shape that extends along the axial direction, Lighting device (1).

[0041] According to the lighting device with the configuration described in [3] above, the protruding portion of the clamping portion of the first housing has a shape that extends along the axial direction of the light guide. This makes it possible to more effectively suppress, for example, the light guide from being held in an inclined position relative to the target orientation. As a result, the light guide can properly transmit the light emitted by the light emitter.

[0042] [4] In the lighting device (1) described in [1] above, The first housing (40) and the second housing (50) are, When the first housing (40) is stored in the second housing (50), the clamping portion (44) is displaced in the aforementioned direction as the first housing (40) approaches the storage completion position inside the second housing (50). Lighting device (1).

[0043] According to the lighting device with the configuration described in [4] above, the clamping portion can be naturally brought into contact with the light guide by the operation of storing the first housing inside the second housing. This improves the work efficiency of the production of the lighting device.

[0044] [5] In the lighting device (1) described in [1] above, The first housing (40) is The system has a positioning wall portion (41a) which positions the light guide (30) at the light receiving position by abutting the light guide (30) against it in the axial direction. Lighting device (1).

[0045] According to the lighting device with the configuration described in [5] above, the light guide can be positioned at the light-receiving position by abutting the light guide against the positioning wall of the first housing. For example, by positioning the light guide so that the end face of the rod-shaped light guide is adjacent to the light emitter, the light emitted by the light emitter can be efficiently guided to the light guide. This makes it easier to position the light guide, thereby improving the work efficiency of the lighting device production process. [Explanation of Symbols]

[0046] 1. Lighting device 2 Housing 14 LEDs (light-emitting devices) 30 Light guide 40 Spacer (1st housing) 41a Flange section (positioning wall section) 44 Clamping part 46 Protruding part 50 Adapter (Second Housing)

Claims

1. A lighting device comprising a light-emitting element, a rod-shaped light guide that transmits light emitted by the light-emitting element, and a housing that houses the light-emitting element and holds the light guide at a predetermined light-receiving position, The aforementioned housing is A first housing having a clamping portion that sandwiches the light guide in an intersecting direction that intersects the axial direction of the light guide and is displaceable in the intersecting direction, The device comprises a second housing that houses the first housing inside and applies force to the clamping portion in a direction that causes the clamping portion to press against the light guide body, Lighting device.

2. In the lighting device according to claim 1, The clamping portion of the first housing is It has a protruding portion that extends toward the light guide and presses against the light guide, Lighting device.

3. In the lighting device according to claim 2, The aforementioned protruding portion is Having a shape that extends along the axial direction, Lighting device.

4. In the lighting device according to claim 1, The first housing and the second housing are When the first housing is stored in the second housing, the clamping portion is displaced in the direction described above as the first housing approaches the completed storage position inside the second housing. Lighting device.

5. In the lighting device according to claim 1, The first housing is, The system has a positioning wall portion which positions the light guide at the light receiving position by abutting the light guide in the axial direction. Lighting device.

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