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 includes an elastically deformable water-sealing member 60 arranged to surround the outer circumference of the light guide 30, a first housing 40 that houses the water-sealing member 60 inside, and a second housing 50 that is housed inside the first housing 40 and elastically deforms so that the water-sealing member 60 is pressed against the light guide 30 in the axial direction between the water-sealing member 60 and the first housing 40. The second housing 50 has an insertion portion 52 through which the light guide 30 is inserted in the axial direction.

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 to fix 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 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 An elastically deformable water-stopping member is arranged to surround the outer circumference of the light guide, A first housing that accommodates the water-stopping member, The device comprises a second housing which is housed in the first housing and which elastically deforms the water-sealing member between itself and the first housing in the axial direction of the light guide, causing the water-sealing member to press against the light guide. 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 surrounded by an elastically deformable water-stopping member, and the first and second housings are elastically deformed so as to press against the light guide with the water-stopping member in between, and the light guide is positioned at a predetermined light-receiving position. 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 housing due to manufacturing variations), the water-stopping member elastically deforms and presses against the light guide, allowing the light guide to be properly held by the water-stopping member. The water-stopping member can also stop water from flowing along the outer surface of the light guide. 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 showing the lighting device shown in Figure 1 with the outer cover separated. [Figure 4] Figure 4 is a cross-sectional view of AA in Figure 3. [Figure 5] Figure 5 is a side view showing the lighting device shown in Figure 1. [Figure 6] Figure 6 is a cross-sectional view of BB in Figure 5. [Figure 7] Figure 7 is a cross-sectional view of the CC in Figure 6. [Figure 8] Figure 8 is an enlarged view of section D in Figure 6. [Figure 9] Figure 9 is a cross-sectional view corresponding to the BB section in Figure 5, illustrating the water-stopping function when the lighting device shown in Figure 1 is installed on the target object. [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 6, etc.) via a rod-shaped light guide 30 (see Figures 1, 2 and 6, 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.

[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, an adapter 40 that holds the light guide 30 and connects the light guide 30 and the LED unit 10, and an outer cover 50 that is attached to the adapter 40 so as to be stored inside the adapter 40. Here, the LED unit 10, the adapter 40, and the outer cover 50 constitute the housing 2 of the lighting device 1 (see FIG. 1). The adapter 40 and the outer cover 50 respectively correspond to the "first housing" and the "second housing" of the present invention. Hereinafter, the configurations of the respective components 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 6, 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, an LED 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 , and the substrate 13 is housed in the LED housing portion 17. The LED 14 mounted on the substrate 13 is 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 16 of the housing 11. In a state where the vehicle-side connector is fitted into the connector portion 16, an electrical signal transmitted from the vehicle-side connector (not shown) is transmitted to the substrate 13 via the bus bar 12, and the LED 14 mounted on the substrate 13 is controlled to emit light based on the electrical signal. On the left and right side walls of the LED housing portion 17, a pair of left and right locking protrusions 18 are formed. The pair of left and right locking protrusions 18 will engage with a pair of left and right locking holes 21 of the cover 15 described later.

[0016] The cover 15 is mounted on the LED accommodating portion 17 of the housing 11 so as to cover the LED accommodating portion 17, and functions to protect the substrate 13 and the LED 14 accommodated in the LED accommodating 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 so as to project upward and communicate the inside and outside of the cover 15 in the vertical direction corresponding to the LED 14 in the housing 11. 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 48 of the adapter 40 described later. The cover 15 is mounted on the LED accommodating portion 17 by being slid rearward with respect to the LED accommodating portion 17 from the front side. In the state where the cover 15 is completely mounted on the LED accommodating portion 17, the locking hole 21 of the cover 15 and the locking protrusion 18 of the LED accommodating portion 17 are engaged. Thereby, the cover 15 is prevented from coming off (separating) forward from the housing 11 (LED accommodating portion 17). In the LED unit 10 in which the cover 15 is mounted on the LED accommodating portion 17, the LED 14 accommodated in the LED accommodating portion 17 is exposed to the outside through the upper opening of the LED accommodating portion 17 and the opening 19 of the cover 15 (see FIG. 6).

[0017] Next, the adapter 40 will be described. The adapter 40 is a resin molded body and has a substantially cylindrical main body portion 41 extending in the vertical direction as shown in FIGS. 2, 4, 6, etc. The upper end of the main body portion 41 is open, and the lower end of the main body portion 41 is closed by a circular flat bottom wall. Inside the main body portion 41, the main body portion 51 of the outer cover 50 described later will be stored (see FIG. 6, etc.). The substantially cylindrical inner peripheral side surface of the main body portion 41 extending in the vertical direction is an inclined surface 41a that is slightly inclined with respect to the vertical direction so as to increase in diameter from the lower side to the upper side except for the vicinity of the lower end (see FIGS. 4 and 6).

[0018] As shown in Figures 2, 4, and 6, a roughly cylindrical tubular portion 42, slightly smaller in diameter than the main body 41, is attached to the outer peripheral edge of the bottom wall of the main body 41, extending downward. A cylindrical insertion portion 43 is provided in the center of the bottom wall of the main body 41, extending downward and traversing the internal space of the tubular portion 42. The upper and lower ends of the insertion portion 43 are open. An annular flange portion 44 is formed at the lower opening edge of the insertion portion 43, extending radially inward in the circumferential direction (see Figures 4, 6, and 8). The light guide 30 is inserted through the insertion portion 43 (see Figures 4 and 6, etc.).

[0019] An annular groove 45 is formed on the outer circumferential side surface of the main body portion 41 (see Figures 2 and 4). An outer O-ring 70, which will be described later, will be fitted into the annular groove 45 (see Figures 4 and 6). A pair of left and right locking protrusions 46 are formed on the outer circumferential side surface of the main body portion 41 above the annular groove 45. A pair of left and right locking holes 55 of the outer cover 50, which will be described later, will engage with the pair of left and right locking protrusions 46 (see Figures 5 and 6). A pair of left and right substantially flat locking pieces 47 are formed at the lower end of the main body portion 41 so as to extend downward and face each other with a gap between them in the left and right direction. A locking hole 48 is formed in each locking piece 47 that penetrates in the thickness direction (left and right direction).

[0020] Next, the outer cover 50 will be described. The outer cover 50 is a resin molded body and has a substantially cylindrical main body portion 51 that extends in the vertical direction, as shown in Figures 2 and 4. The main body portion 51 has an insertion hole 52 that penetrates in the vertical direction. The light guide 30 will be inserted through the insertion hole 52 (see Figure 6, etc.). Except for the portion near the lower end, the outer peripheral surface of the main body portion 51 is an inclined surface 51a that is slightly inclined in the vertical direction in a direction that widens from the bottom to the top, corresponding to the inclined surface 41a of the main body portion 41 of the adapter 40.

[0021] An annular flange portion 53 is formed at the upper end of the main body portion 51, extending radially outward in the circumferential direction (see Figures 2 and 4). On both the left and right sides of the flange portion 53, a pair of partially cylindrical locking pieces 54 are formed so as to extend downward and so as to face each other in the left and right direction with the main body portion 51 in between. A locking hole 55 is formed in each locking piece 54, penetrating in the plate thickness direction (left and right direction). The configuration of each component constituting the lighting device 1 has been described above.

[0022] Next, the assembly procedure for the lighting device 1 will be described. In order to assemble the lighting device 1, first, as shown in Figure 4, the adapter 40 is assembled to the LED unit 10, on which the cover 15 is attached to the LED housing 17. For this purpose, the adapter 40 is assembled to the cover 15 such that the insertion portion 43 of the adapter 40 is inserted into the opening 19 of the cover 15 of the LED unit 10 from above, the opening 19 of the cover 15 is housed in the internal space of the cylindrical portion 42 of the adapter 40, and the pair of left and right locking pieces 47 of the adapter 40 cover both left and right side walls of the cover 15. When the adapter 40 is assembled to the LED unit 10, as shown in Figures 3 and 4, the locking hole 48 of the adapter 40 and the locking projection 22 of the cover 15 are engaged. This prevents the adapter 40 from coming off (separating) upward from the cover 15 (i.e., the LED unit 10).

[0023] Next, as shown in Figure 4, the inner O-ring 60 and the outer O-ring 70 are assembled to the adapter 40 attached to the LED unit 10. Both the inner O-ring 60 and the outer O-ring 70 are made of rubber. The inner O-ring 60 has an inner diameter corresponding to the outer diameter of the light guide 30, which has a circular cross-section, and an outer diameter corresponding to the inner diameter of the cylindrical inner surface of the portion near the lower end of the main body 41 of the adapter 40. It is assembled inside the main body 41 so as to rest on the bottom wall of the main body 41 and surround the upper end opening of the insertion portion 43. The outer O-ring 70 has an inner diameter corresponding to the outer diameter of the groove bottom surface of the annular groove 45 of the adapter 40, and an outer diameter corresponding to the inner diameter of the cylindrical inner surface of the housing portion 81 that houses the adapter 40 of the mounting target 80 of the lighting device 1 (see Figure 9; for example, a predetermined panel on the vehicle side on which the lighting device 1 is mounted). It is assembled into the annular groove 45 formed on the outer peripheral side surface of the main body portion 41 so as to surround the outer circumference of the main body portion 41.

[0024] Next, as shown in Figure 4, the rod-shaped light guide 30 is assembled to the adapter 40. To do this, the light guide 30 is inserted into the main body 41 of the adapter 40 from above through the upper end opening of the main body 41, and the light guide 30, which traverses the internal space of the main body 41, is inserted in this order into the inner O-ring 60 and insertion portion 43 which are placed on the bottom wall of the main body 41. This insertion continues until the tip 30a of the light guide 30 (see Figure 2) abuts against the flange portion 44 located at the lower end of the insertion portion 43 (see Figures 6 and 8). When the assembly of the light guide 30 to the adapter 40 is complete, as shown in Figure 4, with the tip 30a of the light guide 30 abutting against the flange portion 44, the light guide 30 located inside the insertion portion 43 is supported by the inner wall of the insertion portion 43. In this way, by abutting the tip 30a of the light guide 30 against the flange portion 44, the light guide 30 can be positioned at the desired light-receiving position when the lighting device 1 is assembled (see Figure 4). Furthermore, the inner circumferential surface of the inner O-ring 60 is in close contact with the outer circumferential surface of the light guide 30, and the outer circumferential surface of the inner O-ring 60 is in close contact with the cylindrical inner circumferential surface of the portion near the lower end of the main body portion 41. The light guide 30 extends upward from the upper end opening of the main body portion 41 of the adapter 40. The tip 30a of the light guide 30 is exposed downward through the lower end opening of the insertion portion 43 and is positioned at the 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 (see Figure 4).

[0025] Next, the outer cover 50 is attached to the adapter 40 to which the light guide 30 is assembled. To do this, first, the light guide 30, which extends upward from the upper end opening of the main body portion 41 of the adapter 40, is inserted through the insertion hole 52 of the main body portion 51 of the outer cover 50. Then, the outer cover 50 is attached to the adapter 40 from above so that the main body portion 51 of the outer cover 50, with the light guide 30 inserted through the insertion hole 52, is housed in the internal space of the main body portion 41 of the adapter 40, and so that the pair of left and right locking pieces 54 of the outer cover 50 cover both sides in the left-right direction of the outer peripheral surface of the main body portion 41 of the adapter 40 (see Figure 6). During this mounting process, as the outer cover 50 approaches the completed mounting position inside the adapter 40, the lower end surface of the main body portion 51 of the outer cover 50 elastically deforms so that the inner O-ring 60 is pressed against the light guide 30 and the cylindrical inner surface of the main body portion 41 by sandwiching the inner O-ring 60 between them from above and below (see Figures 6 and 7). In this way, by mounting the outer cover 50 onto the adapter 40, the inner O-ring 60 can be naturally pressed against the light guide 30.

[0026] Once the outer cover 50 is attached to the adapter 40, the assembly of the lighting device 1 is complete, and the lighting device 1 shown in Figure 1 is obtained. In the state where the outer cover 50 is attached to the adapter 40 (i.e., the state where the lighting device 1 is assembled), the pair of left and right locking holes 55 of the outer cover 50 and the pair of left and right locking protrusions 46 of the adapter 40 are engaged (see Figures 1, 5, and 6). This prevents the outer cover 50 from coming off (separating) upward from the adapter 40. The inner O-ring 60 is pressed against the outer surface of the light guide 30 and the cylindrical inner surface of the main body 41 by being elastically deformed while being sandwiched between the lower end surface of the main body portion 51 of the outer cover 50 and the bottom wall of the main body portion 41. As a result, regardless of the magnitude of manufacturing variations in the light guide 30 and adapter 40 (for example, even if there is a gap between the light guide 30 and the adapter 40 due to manufacturing variations), the inner O-ring 60 elastically deforms and presses against the light guide 30, thereby properly holding the light guide 30 in place. Furthermore, the light guide 30 is inserted through a through hole 52 that extends vertically in the outer cover 50. As a result, the vertical orientation of the light guide 30 is maintained not only by the inner O-ring 60 but also by the through hole 52 in the outer cover 50.

[0027] The following describes the water-sealing function provided by the inner O-ring 60 and outer O-ring 70 in the lighting device 1 shown in Figure 1. The lighting device 1 shown in Figure 1 is mounted, for example, on a mounting target 80 (for example, a predetermined panel on the vehicle side on which the lighting device 1 is mounted), as shown in Figure 9. The mounting target 80 shown in Figure 9 includes a cylindrical housing portion 81 that houses the adapter 40 with the outer cover 50 attached, and an insertion hole 82 through which a light guide 30 extending from the upper end opening of the insertion hole 52 of the outer cover 50 housed in the housing portion 81 is inserted.

[0028] When the adapter 40 with the outer cover 50 attached is housed in the housing 81, the outer O-ring 70 assembled in the annular groove 45 of the main body 41 of the adapter 40 is elastically deformed by being sandwiched radially between the groove bottom surface of the annular groove 45 and the cylindrical inner surface of the housing 81, thereby making pressure contact with the groove bottom surface of the annular groove 45 and the cylindrical inner surface of the housing 81. As a result, water that has entered the annular gap between the cylindrical inner surface of the housing 81 and the outer peripheral side surface of the main body 41 of the adapter 40 through the insertion hole 82 (see white arrow in Figure 9) can be stopped by the outer O-ring 70. Furthermore, the inner O-ring 60 assembled inside the main body 41 of the adapter 40 is elastically deformed by being sandwiched vertically between the lower end surface of the main body 51 of the outer cover 50 and the bottom wall of the main body 41, as described above, thereby making pressure contact with the outer peripheral surface of the light guide 30 and the cylindrical inner surface of the main body 41. This allows the inner O-ring 60 to stop water (see white arrow in Figure 9) from entering the annular gap between the insertion hole 52 of the outer cover 50 and the light guide 30 through the insertion hole 82.

[0029] <Effects and Actions> As described above, according to the lighting device 1 of this embodiment, the rod-shaped light guide 30 is surrounded by an elastically deformable water-stopping member (inner O-ring 60), and the first housing (adapter 40) and the second housing (outer cover 50) are elastically deformed so as to press against the light guide 30 with the water-stopping member 60 in between, and the light guide 30 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 housing 2 due to manufacturing variations), the water-stopping member 60 elastically deforms and presses against the light guide 30, thereby properly holding the light guide 30 with the water-stopping member 60. The water-stopping member 60 can stop water from flowing along the outer surface of the light guide 30. Thus, 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 second housing 50 has an insertion portion (insertion hole 52) through which the light guide 30 is inserted. As a result, the orientation of the light guide 30 is maintained not only by the water-sealing member 60 but also by the insertion portion 52. Therefore, the lighting device 1 of this embodiment can hold the light guide 30 even more properly.

[0031] Furthermore, according to the lighting device 1 of this embodiment, by storing the second housing 50 inside the first housing 40, the water-stopping member 60 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 44) of the first housing 40. For example, by positioning the light guide 30 so that its end face (tip 30a) is adjacent to the light-emitting element (LED 14), the light emitted by the light-emitting element 14 can be efficiently guided to the light guide 30. This makes it easier to position the light guide 30, thereby improving the work efficiency of the production of the lighting device 1.

[0033] Furthermore, according to the lighting device 1 of this embodiment, an external water-sealing member (outer O-ring 70) is provided so as to surround the outer circumference of the first housing 40. This allows the external water-sealing member 70 to stop water from entering the gap between the mounting target 80 and the first housing 40 when the first housing 40 of the lighting device 1 is fitted onto the mounting target 80 (for example, a panel member of a vehicle).

[0034] <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.

[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 An elastically deformable water-stopping member (60) is arranged to surround the outer periphery of the light guide (30), A first housing (40) that houses the water-stopping member (60), The device comprises a second housing (50) housed in the first housing (40), and having a water-stopping member (60) sandwiched between the first housing (40) and the light guide (30) in the axial direction of the light guide (30), and being elastically deformed so as to press the water-stopping member (60) into contact with 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 surrounded by an elastically deformable water-stopping member, and the first and second housings are elastically deformed so as to press against the light guide with the water-stopping member in between, and the light guide is positioned at a predetermined light-receiving position. 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 housing due to manufacturing variations), the water-stopping member elastically deforms and presses against the light guide, allowing the light guide to be properly held by the water-stopping member. The water-stopping member can also stop water from flowing along the outer surface of the light guide. Thus, the lighting device with this configuration can properly hold the light guide.

[0038] [2] In the lighting device (1) described in [1] above, The second housing (50) is The light guide (30) has an insertion portion (52) through which it is inserted in the axial direction, Lighting device (1).

[0039] According to the lighting device with the configuration described in [2] above, the second housing has an insertion portion through which the light guide is inserted. As a result, the orientation of the light guide is maintained not only by the water-sealing member but also by the insertion portion. Therefore, the lighting device with this configuration can hold the light guide even more properly.

[0040] [3] In the lighting device (1) described in [1] above, The first housing (40) and the second housing (50) are, When the second housing (50) is stored in the first housing (40), the water-stopping member (60) is elastically deformed so as it approaches the completed storage position inside the first housing (40), causing it to press against the light guide (30). Lighting device (1).

[0041] According to the lighting device with the configuration described in [3] above, the water-stopping member can be naturally pressed into contact with the light guide by the operation of housing the second housing inside the first housing. This improves the work efficiency of the production of the lighting device.

[0042] [4] In the lighting device (1) described in [1] above, The first housing (40) is The system has a positioning wall portion (44) which positions the light guide (30) at the light receiving position by abutting the light guide (30) in the axial direction. Lighting device (1).

[0043] According to the lighting device with the configuration described in [4] 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.

[0044] [5] In the lighting device (1) described in [1] above, The aforementioned housing (2) is The first housing (40) has an elastically deformable external water-sealing member (70) that is arranged to surround the outer periphery of the first housing (40). Lighting device (1).

[0045] According to the lighting device with the configuration described in [5] above, an external water-sealing member is provided so as to surround the outer periphery of the first housing. This allows the lighting device to be fitted into an object to be mounted (for example, a panel member of a vehicle), thereby preventing water from entering the gap between the object to be mounted and the first housing from being stopped by the external water-sealing member. [Explanation of Symbols]

[0046] 1. Lighting device 2 Housing 14 LEDs (light-emitting devices) 30 Light guide 40 Adapter (First Housing) 44 Flange section (positioning wall section) 50 Outer cover (second housing) 52 Through hole (insertion part) 60 Inner O-ring (waterproofing component) 70 Outer O-ring (external water-sealing component)

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 An elastically deformable water-stopping member is arranged to surround the outer circumference of the light guide, A first housing that accommodates the water-stopping member, The device comprises a second housing which is housed in the first housing and which elastically deforms the water-sealing member between itself and the first housing in the axial direction of the light guide, causing the water-sealing member to press against the light guide. Lighting device.

2. In the lighting device according to claim 1, The preceding 2 housing is The light guide has an insertion portion through which it is inserted in the axial direction, Lighting device.

3. In the lighting device according to claim 1, The first housing and the second housing are When the second housing is stored in the first housing, the water-stopping member is elastically deformed so as it approaches the completed storage position inside the first housing, causing it to press against the light guide. Lighting device.

4. 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.

5. In the lighting device according to claim 1, The aforementioned housing is The first housing has an elastically deformable external water-sealing member that is arranged to surround the outer periphery of the first housing, Lighting device.

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