JP6796974B2 - Rod-shaped light guide and vehicle lighting equipment - Google Patents

Description

The present invention relates to a rod-shaped light guide and a vehicle lamp.

In a certain vehicle lighting fixture, a plurality of sets of a light emitting diode and a light guide pillar in which light emitted from the light emitting diode is incident from one end surface and emitted from a peripheral surface are arranged in parallel. The plurality of light emitting diodes are fixedly supported by a common light source support member. A bridge connecting a plurality of light guide pillars is integrally formed at the incident end of each light guide pillar (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2010-272469

Ancillary shaped portions such as the above-mentioned bridge integrally formed with the main body portion of the rod-shaped light guide are usually provided for practical purposes such as mounting and positioning. Since such an accessory portion is designed to have a shape suitable for the purpose, it does not necessarily have an ideal shape from the viewpoint of the light guide function, which is the essential role of the light guide body. Therefore, the accessory portion of the light guide body can affect the light guide performance of the light guide body and the light distribution performance of the lamp. For example, some light to be guided may leak out of the light guide from the accessory or from the junction area between the accessory and the body.

The present invention has been made in view of such a situation, and an object of the present invention is to reduce a secondary influence that an accessory portion integrally formed with a rod-shaped light guide can have on the light guide performance of the light guide. There is.

In order to solve the above problems, the rod-shaped light guide body according to an embodiment of the present invention is integrally formed with at least one light guide body main body provided with a peripheral surface and the light guide body main body, and is formed at least on the entire circumference of the peripheral surface. It is provided with a mounting flange portion extending over a part thereof, and an opening formed between the peripheral surface and the mounting flange portion.

According to this aspect, the peripheral surface of the light guide body main body is separated from the mounting collar portion with the opening. Therefore, the joint region between the light guide body main body and the mounting flange portion is reduced as compared with the case where the opening does not exist. Therefore, the influence on the light guide performance such as light leakage from the mounting flange portion or the joint region is reduced. Further, the shape of the region of the peripheral surface facing the opening can be set according to the other regions of the peripheral surface. For example, when the peripheral surface has a certain geometric shape (for example, a cylindrical surface), the geometric shape can be applied to the region of the peripheral surface facing the opening. In this way, the region of the peripheral surface facing the opening can be smoothly connected to the surrounding region. This also helps reduce the effect on light guide performance.

The light guide body includes an incident end portion having a light incident surface, a mounting flange portion is integrally formed with the incident end portion, and an opening is formed between a peripheral surface at the incident end portion and the mounting flange portion. You may be.

The mounting flange extends over a part of the entire circumference of the peripheral surface, and the opening is formed between a part of the peripheral surface and the mounting collar, and the other part of the entire circumference of the peripheral surface. May project to the outside of the mounting collar.

The rod-shaped light guide body may include a first light guide body main body having a first peripheral surface and a second light guide body main body having a second peripheral surface and extending along the first light guide body main body. In the first light guide body and the second light guide body, the first peripheral surface and the second peripheral surface are separated from each other in a part in the longitudinal direction, and the first peripheral surface and the second peripheral surface in the other part in the longitudinal direction. Are arranged so as to be close to each other, and the mounting flange portion is arranged in a part where the first peripheral surface and the second peripheral surface are separated from each other, and is integrally formed with the first light guide body main body and the second light guide body main body. The rod-shaped light guide has a first opening formed between the first peripheral surface and the mounting flange, and a second opening formed between the second peripheral surface and the mounting flange. , May be provided.

A vehicle lamp according to an embodiment of the present invention may include the above-mentioned rod-shaped light guide and a bracket for supporting the rod-shaped light guide. A plurality of steps are formed on the peripheral surface of at least one light guide body to totally reflect a part of the light traveling inside the light guide body, and the peripheral surface has a plurality of steps with respect to the central axis of the light guide body. A light emitting portion may be provided on the opposite side of the step. The bracket may include a bracket side portion that extends laterally on the peripheral surface and beyond the light emitting portion. In a cross section perpendicular to the central axis of the light guide body, the center of the surface of the step may be located away from the side of the bracket with respect to the normal of the surface of the step passing through the central axis.

According to the present invention, it is possible to reduce the secondary influence that the accessory portion integrally formed with the rod-shaped light guide body may have on the light guide performance of the light guide body.

It is a schematic front view for demonstrating the vehicle lamp fixture which concerns on embodiment. It is the schematic which shows the AA cross section of the vehicle lamp shown in FIG. It is the schematic which shows the BB cross section of the vehicle lamp shown in FIG. The cross section of the light guide body as a comparative example is enlarged and shown schematically, and FIG. 5 is an enlarged view which shows the cross section of the light guide body according to the embodiment. It is a figure which shows by enlarging the cross section of the light guide body which concerns on embodiment. It is a perspective view which shows typically the incident end part of the light guide body shown in FIG. It is the schematic which shows the CC cross section in FIG. 8 (a) and 8 (b) are perspective views schematically showing the mounting flange portion of the light guide body and its peripheral structure shown in FIGS. 6 and 7. The incident end of a light guide is schematically shown. It is a perspective view which shows the other example of the incident end portion of the light guide body which concerns on embodiment.

Hereinafter, the present invention will be described with reference to the drawings based on preferred embodiments. The embodiments are not limited to the invention, but are exemplary, and all the features and combinations thereof described in the embodiments are not necessarily essential to the invention. The same or equivalent components, members, and processes shown in the drawings shall be designated by the same reference numerals, and redundant description will be omitted as appropriate. In addition, the scale and shape of each part shown in each figure are set for convenience in order to facilitate explanation, and are not limitedly interpreted unless otherwise specified.

FIG. 1 is a schematic front view for explaining the vehicle lamp 10 according to the embodiment. FIG. 2 is a schematic view showing an AA cross section of the vehicle lamp 10 shown in FIG. FIG. 3 is a schematic view showing a BB cross section of the vehicle lamp 10 shown in FIG.

FIG. 1 shows a vehicle lamp 10 attached to the left side of the vehicle. The two vehicle lamps arranged on the left and right have substantially the same configuration except that they have a symmetrical structure. The vehicle lighting fixture 10 is a rear combination lamp mounted on the rear of the vehicle. FIG. 1 shows the lamp on the left side as an example. Therefore, the left side corresponds to the outside of the vehicle and the right side corresponds to the inside of the vehicle.

The vehicle lamp 10 includes a movable lamp 12 and a fixed lamp 14. The movable side lamp 12 is provided in an openable / closable portion installed at the rear of the vehicle body such as a back door. The fixed side lamp 14 is provided on a non-movable portion of the vehicle body that supports such an openable / closable portion. The movable side lamp 12 includes the movable side tail lamp 16, and the fixed side lamp 14 includes the fixed side tail lamp 18. As described above, the vehicle lamp 10 may include lamps having the same role separately on the movable side and the fixed side. Further, the fixed side lamp 14 is provided with a stop lamp 20. In addition, the vehicle lighting fixture 10 may include backup lamps, rear fog lamps, turn signal lamps, and / or other lamps.

The movable tail lamp 16 and the fixed tail lamp 18 each include a tail light emitting unit 22. Since the tail light emitting portion 22 has an internal structure of the lamp, it is schematically shown by a broken line in FIG. 1 showing the appearance of the lamp. The tail light emitting portion 22 of the movable tail lamp 16 extends linearly from the inside of the vehicle to the outside of the vehicle. The tail light emitting portion 22 of the fixed side tail lamp 18 is arranged adjacent to the stop lamp 20 on the outside of the vehicle so as to surround the three sides of the stop lamp 20.

The tail light emitting unit 22 has at least one light source 24 and at least one rod-shaped light guide (hereinafter, also simply referred to as a light guide) 26. As an example, the movable tail lamp 16 has two light sources 24 and two light guides 26, and the fixed tail lamp 18 has three light sources 24 and three light guides 26.

The light source 24 may include, for example, a semiconductor light emitting element such as an LED or another light emitting element. The light guide 26 is usually an injection-molded product made of a transparent resin such as acrylic or polycarbonate. The light guide body 26 is configured to receive light from the light source 24 at the incident end portion, guide the incident light internally, and emit the incident light from a part of the peripheral surface toward the front of the lamp, that is, the rear of the vehicle. There is. The extending shape of the light guide body 26 is arbitrary, and may have a curved portion as shown in the drawing, or may extend linearly.

In the tail light emitting portion 22 of the movable tail lamp 16, the two light sources 24 are located at the inner end of the vehicle, and the two light guides 26 extend from the light source 24 toward the outer end of the vehicle. In the fixed-side tail lamp 18, the three light sources 24 are arranged close to each other on the outside of the vehicle with respect to the stop lamp 20. One light guide 26 extends from the corresponding light source 24 toward the inside of the vehicle above the stop lamp 20. The remaining two light guides 26 extend in an L shape from the corresponding light source 24 and are arranged laterally and below the stop lamp 20. The two light guide bodies 26 of the movable tail lamp 16 are arranged on the extension lines of the two light guide bodies 26 extending in an L shape.

As shown in FIGS. 2 and 3, the fixed-side tail lamp 18 includes a lamp body 30, a translucent cover 32, a bracket 34, and an inner lens 36. A lamp chamber 38 is formed between the lamp body 30 and the translucent cover 32. The bracket 34 and the inner lens 36 are arranged in the light chamber 38, and a light guide body accommodating chamber 40 is formed between the bracket 34 and the inner lens 36.

The first light guide body 42a and the second light guide body 42b are housed in the light guide body accommodating chamber 40. In the following, when it is not necessary to distinguish between the first light guide body 42a and the second light guide body 42b, or when both are collectively referred to, the light guide body 42 is appropriately referred to. The first light guide body main body 42a and the second light guide body main body 42b correspond to the main parts of the two L-shaped light guide bodies 26 shown in FIG.

The bracket 34 is a member that supports the light guide body 26, and is, for example, a colored (for example, white) resin molded product. The bracket 34 has a bracket side portion 34a and a bracket bottom portion 34b, as shown in FIG. Therefore, the light guide body accommodating chamber 40 is formed by the bracket side portion 34a, the bracket bottom portion 34b, and the inner lens 36.

The light guide body 42 is arranged closer to the bottom of the bracket 34b than between the inner lens 36 and the side of the bracket 34a. The bracket side portion 34a extends from the bracket bottom portion 34b through the side of the peripheral surface 44. The bracket side portion 34a further extends toward the rear of the vehicle beyond the light emitting portion 48, and finally reaches the inner lens front end 36a.

The inner lens 36 is provided with an optical control structure 52 on its surface that utilizes light diffusion, refraction, and the like. The light control structure 52 has a fisheye range 52a in which a fisheye step is formed and a knurled range 52b in which a knurl is formed. The fisheye range 52a is arranged on the front end 36a side of the inner lens, and the knurled range 52b is arranged on the bracket bottom 34b side. The shape and arrangement of the optical control structure 52 of the inner lens 36 are not limited to this. For example, as shown in FIG. 3, knurled ranges 52b may be provided on both sides of the fisheye range 52a. Further, the optical control structure 52 may have a grain or other uneven pattern.

The cross section of the movable tail lamp 16 may be the same as that shown in FIG.

FIG. 4 shows an enlarged cross section of the light guide body as a comparative example, and FIG. 5 shows an enlarged cross section of the light guide body according to the embodiment. 4 and 5 show an enlarged example of the light guide body 42 and its peripheral structure. 4 and 5 show a cross section perpendicular to the central axis 54 of the light guide body 42, as in FIG. In this cross section, a normal (hereinafter, also referred to as a step normal) 56 on the surface of the total reflection step 46 passing through the central axis 54 is shown.

As shown in FIGS. 4 and 5, the first light guide body 42a has a first peripheral surface 44a, and the second light guide main body 42b has a second peripheral surface 44b. Hereinafter, when it is not necessary to distinguish between the first peripheral surface 44a and the second peripheral surface 44b, or when both are collectively referred to, the peripheral surface 44 is appropriately referred to. A plurality of steps (hereinafter, also referred to as total reflection steps) 46 that totally reflect a part of the light traveling inside the light guide body 42 are formed on the peripheral surface 44 of the light guide body 42. The peripheral surface 44 has a light emitting portion 48 on the side opposite to the total reflection step 46 with respect to the central axis 54 of the light guide body 42. A part of the light reflected in the total reflection step 46 is emitted from the light emitting unit 48.

The total reflection step 46 faces the bottom of the bracket 34b. As shown in FIG. 2, the distance from the total reflection step 46 to the bracket bottom portion 34b is small, and the distance from the light emitting portion 48 to the inner lens front end 36a is considerably long.

As shown in FIGS. 4 and 5, the first light guide body 42a and the second light guide body 42b are connected by a connecting portion 50. The connecting portion 50 is integrally formed with the first light guide body main body 42a and the second light guide body main body 42b, and connects the first peripheral surface 44a and the second peripheral surface 44b to each other. As shown in FIG. 3, the first peripheral surface 44a and the second peripheral surface 44b may be directly joined to each other.

In FIG. 4, the center (hereinafter, also referred to as the step center point) 58 of the surface of the total reflection step 46 is located on the step normal 56. In this case, the total reflection step 46 is axisymmetric with the step normal 56 as the axis of symmetry. The light reflected in the total reflection step 46 in the light guide body 42 is emitted from the light emitting unit 48. The light reflected on the left side of the step normal 56 in the total reflection step 46 is emitted from the right side of the step normal 56 in the light emitting unit 48 (shown as light L1). On the contrary, the light reflected on the right side of the step normal 56 in the total reflection step 46 is emitted from the left side of the step normal 56 in the light emitting unit 48 (shown as light L2).

As described above, the bracket side portion 34a extends long on the right side of the light guide body 42. Therefore, of the light L1 directed from the light emitting portion 48 to the bracket side portion 34a, the light L1a having a larger angle range with respect to the step normal 56 is blocked by the bracket side portion 34a and does not emit to the outside of the lamp. Therefore, of the light L1, only the light L1b having a smaller angle range can be emitted to the outside of the lamp. On the other hand, the light L2 emits light to the outside of the lamp because there is no light-shielding object such as the bracket side portion 34a in the optical path. As a result, as shown by the broken line arrow 60 in FIG. 2, a light distribution facing the outside of the vehicle is formed.

In the embodiment shown in FIG. 5, the step center point 58 is located at a position deviated from the step normal 56 in a direction away from the bracket side portion 34a (left side in the drawing). Therefore, the total reflection step 46 is arranged so as to be offset from the step normal 56 in the direction away from the bracket side portion 34a. As a result, the shape and arrangement of the total reflection step 46 shown in FIG. 5 is a reduction of the portion of the total reflection step 46 shown in FIG. 4 that directs light to the outside of the vehicle (the right portion of the step in the figure). .. The portion that directs the light to the inside of the vehicle (the portion on the left side of the step in the figure) is the same in the total reflection step 46 shown in FIGS. 4 and 5.

For ease of understanding, the angular range of light L2 shown in FIG. 4 is shown by a broken line in FIG. In the case of FIG. 5, the light L3 emitted from the light emitting unit 48 on the left side of the step normal 56 has a smaller angle than the light L2 emitted from the light emitting unit 48 on the left side of the step normal 56 in the case of FIG. Has a range. The angle range of the light L3 emitted from the light emitting portion 48 on the left side of the step normal 56 is the same as the angle range of the light L1b emitted from the light emitting portion 48 on the right side of the step normal 56 and not shaded by the bracket side portion 34a. It has been adjusted to the extent. In this way, as shown by the solid arrow 62 in FIG. 2, the light distribution facing the rear of the vehicle is formed.

Such a light distribution facing the rear of the vehicle may be required for the fixed tail lamp 18 among the tail lamps divided into the movable tail lamp 16 and the fixed tail lamp 18 as shown in FIG. By adjusting the width and position of the total reflection step 46 as illustrated in FIG. 5, the desired light distribution pattern can be adjusted.

FIG. 6 is a perspective view schematically showing an incident end portion 70 of the light guide body 26 shown in FIG. 1, and FIG. 7 is a schematic view showing a CC cross section in FIG. The exemplified incident end 70 may be provided on the movable tail lamp 16 or may be provided on the fixed tail lamp 18.

The light guide body 26 is integrally formed with at least one light guide body 42 having a peripheral surface 44 and the light guide body 42, and has a mounting collar portion 72 extending over at least a part of the entire circumference of the peripheral surface 44. And an opening 74 formed between the peripheral surface 44 and the mounting flange portion 72. The mounting flange portion 72 has at least one joining region 76 that connects the peripheral surface 44 to the mounting flange portion 72. For example, two joint regions 76 are provided for each peripheral surface 44, and these joint regions 76 are provided on both sides of the opening 74. The peripheral surface 44 is formed in a cylindrical surface shape, and the opening 74 is formed in an arc shape.

The mounting flange portion 72 extends over a part of the entire circumference of the peripheral surface 44. Therefore, only a part of the entire circumference of the peripheral surface 44 faces the opening 74. The other part of the entire circumference of the peripheral surface 44 projects to the outside of the mounting flange portion 72. In other words, the light guide body 42 forms a protruding portion 78 that protrudes from the mounting flange portion 72 toward the side opposite to the opening 74.

The mounting flange portion 72 does not exist on the protruding portion 78, and the peripheral surface 44 is exposed. Therefore, the light leakage from the protrusion 78 is reduced. Further, by providing the mounting flange portion 72 over only a part of the peripheral surface 44, the size of the mounting flange portion 72 can be reduced as compared with the case where the mounting flange portion 72 is provided over the entire circumference of the peripheral surface 44. it can. The mounting flange portion 72 may be provided over the entire circumference of the peripheral surface 44.

The mounting flange portion 72 is integrally formed with the incident end portion 70, and the opening 74 is formed between the peripheral surface 44 of the incident end portion 70 and the mounting flange portion 72. The incident end 70 has a circular light incident surface 80. Light is incident on the light incident surface 80 from the light source 24 supported by the light source support member 25. The joint region 76 connects the light incident surface 80 to the mounting collar portion 72. The front surface of the mounting flange portion 72 is flush with the light incident surface 80.

The mounting flange portion 72 includes a set of mounting portions 82. Each mounting portion 82 has a mounting opening 84 in the center. A set of mounting portions 82 are arranged on both sides of the opening 74 and the light incident surface 80 so as to sandwich the opening 74 and the light incident surface 80. The mounting portion 82 is provided on the front surface of the mounting flange portion 72.

The mounting flange portion 72 may be arranged not at the incident end portion 70 but at another portion of the light guide body 26. The mounting flange portion 72 may be arranged at an arbitrary location in the longitudinal direction, such as an end portion on the opposite side of the incident end portion 70 and an intermediate portion between the incident end portion 70 and the end portion.

In the first light guide body main body 42a and the second light guide body main body 42b, the first peripheral surface 44a and the second peripheral surface 44b are separated from each other in a part in the longitudinal direction. In this separated portion, the first light guide body main body 42a and the second light guide body main body 42b are connected via a connecting portion 86. The mounting flange portion 72 is arranged in a part where the first peripheral surface 44a and the second peripheral surface 44b are separated from each other, and is integrally formed with the first light guide body main body 42a and the second light guide body main body 42b. The mounting flange portion 72 is also integrally formed with the connecting portion 86.

It is advantageous for heat countermeasures to separate the first light guide body main body 42a and the second light guide body main body 42b to some extent at the incident end portion 70. Compared with the case where these light guide bodies are close to each other, the heat given from the light source 24 to the incident end portion 70 can be effectively dissipated.

The light guide body 26 has a first opening 74a formed between the first peripheral surface 44a and the mounting flange portion 72, and a second opening formed between the second peripheral surface 44b and the mounting flange portion 72. A part 74b and the like. As described above, a plurality of openings 74 are formed in the single mounting flange portion 72 that connects the plurality of light guide body bodies 42.

Further, the first light guide body main body 42a and the second light guide body main body 42b are formed in another part of the light guide body 26 in the longitudinal direction (for example, the side opposite to the mounting flange portion 72 with respect to the connecting portion 86 in the longitudinal direction). The first peripheral surface 44a and the second peripheral surface 44b are joined to each other. The total reflection step 46 is formed on the side opposite to the mounting flange portion 72 with respect to the joining start point 87 of the first peripheral surface 44a and the second peripheral surface 44b.

8 (a) and 8 (b) are perspective views schematically showing the mounting flange portion 72 of the light guide body 26 shown in FIGS. 6 and 7 and its peripheral structure. FIG. 8 (a) shows a state before the light source support member 25 is separated from the light guide body 26 for easy understanding, and FIG. 8 (b) shows the light source support member 25 attached. Indicates the state.

As shown, the light guide 26 is supported by the bracket 34. The bracket 34 has a positioning pin 88 and a screw hole 89. When the light guide body 26 is supported by the bracket 34, the mounting portion 82 of the mounting flange portion 72 is located on the screw hole portion 89 of the bracket 34. The positioning pin 88 is inserted into the positioning hole 90 of the corresponding light source support member 25, at which time the mounting hole 92 of the light source support member 25 is located on the mounting opening 84 of the mounting flange portion 72. The light source support member 25 and the light guide body 26 are fastened together with the bracket 34 by mounting screws (not shown). This mounting screw enters the screw hole portion 89 from the mounting hole 92 through the mounting opening 84.

As shown in FIGS. 6 and 7, the peripheral surface 44 of the light guide body 42 is separated from the mounting collar 72 with the opening 74 interposed therebetween. Therefore, the joint region 76 between the light guide body 42 and the mounting flange 72 is narrower than that in the case where the opening 74 does not exist. The portion of the peripheral surface 44 facing the opening 74 and the portion of the peripheral surface 44 of the protruding portion 78 can be used as a reflecting surface for reflecting the light incident on the light guide body 42 from the light incident surface 80.

On the other hand, FIG. 9 shows an incident end portion of the light guide body having no opening 74 as a comparative example. Since the opening 74 is not formed, light from the light source 24 can leak through the joint region 76 between the mounting flange portion 72 and the light guide body 42, as shown in the figure.

Therefore, by forming an opening 74 between the peripheral surface 44 of the light guide body 42 and the mounting flange portion 72, light leakage from the mounting flange portion 72 or the joint region 76 at the incident end portion 70 is reduced or prevented. Can be done. As a result, the influence on the light distribution performance of the vehicle lamp 10 having the light guide 26 is also suppressed.

As shown in FIG. 7, the peripheral surface 44 at the incident end portion 70 may be tapered from the light guide body main body 42 toward the light source 24. Further, the opening 74 may be tapered from the light source 24 toward the light guide body 42. Such a shape facilitates removal of the light guide 26 from the mold during manufacturing.

FIG. 10 is a perspective view schematically showing another example of the incident end portion 70 of the light guide body 26. In the above embodiment, the positioning pin 88 is provided on the bracket 34. However, as shown, the positioning pin 94 may be provided on the mounting collar portion 72. The light source support member 25 may be provided with a positioning hole corresponding to the positioning pin 94 of the mounting flange portion 72. In this way, since the light source support member 25 can be directly positioned on the mounting flange portion 72, the light incident surface 80 of the light guide body 26 and the light source 24 can be better positioned.

The present invention is not limited to the above-described embodiment, and various modifications such as design changes can be made based on the knowledge of those skilled in the art, and the embodiment to which such modifications are added. Is also included in the scope of the present invention.

10 Vehicle lighting fixtures, 26 light guides, 34 brackets, 34a bracket sides, 42 light guides, 42a first light guides, 42b second light guides, 44 peripherals, 44a first peripherals, 44b 2nd peripheral surface, 48 light emitting part, 54 central axis, 70 incident end, 72 mounting collar, 74 opening, 74a 1st opening, 74b 2nd opening, 80 light incident surface.

Claims (7)

At least one light guide body having a peripheral surface and
A mounting collar that is integrally formed with the light guide body and extends over at least a part of the entire circumference of the peripheral surface.
An opening formed between the peripheral surface and the mounting collar portion is provided .
Wherein the mounting flange portion, the rod-shaped light guide mounting portion attached to the support member for supporting the rod-shaped light transmission body, characterized that you have provided separately from the opening. The rod-shaped light guide according to claim 1, wherein the opening is formed in an arc shape. The light guide body body includes an incident end portion having a light incident surface, the mounting collar portion is integrally formed with the incident end portion, and the opening portion is formed on the peripheral surface at the incident end portion and the mounting collar. The rod-shaped light guide according to claim 1 or 2 , wherein the rod-shaped light guide is formed between the portions. The mounting flange portion extends over a part of the entire circumference of the peripheral surface, and the opening is formed between the part of the peripheral surface and the mounting flange portion, and the entire peripheral surface is formed. The rod-shaped light guide according to any one of claims 1 to 3, wherein the other part of the circumference protrudes to the outside of the mounting collar portion. The rod-shaped light guide includes a first light guide main body provided with a first peripheral surface and a second light guide main body provided with a second peripheral surface and extending along the first light guide main body.
In the first light guide body body and the second light guide body main body, the first peripheral surface and the second peripheral surface are separated from each other in a part in the longitudinal direction, and the first circumference in the other part in the longitudinal direction. The surface and the second peripheral surface are arranged so as to be close to each other.
The mounting flange portion is arranged in the part where the first peripheral surface and the second peripheral surface are separated from each other, and is integrally formed with the first light guide body main body and the second light guide body main body. ,
The rod-shaped light guide has a first opening formed between the first peripheral surface and the mounting flange portion, and a second opening formed between the second peripheral surface and the mounting flange portion. The rod-shaped light guide according to any one of claims 1 to 4, further comprising a portion. It is a rod-shaped light guide,
At least one light guide body having a peripheral surface and
A mounting collar that is integrally formed with the light guide body and extends over at least a part of the entire circumference of the peripheral surface.
An opening formed between the peripheral surface and the mounting collar portion is provided.
The rod-shaped light guide includes a first light guide body having a first peripheral surface and a second light guide body having a second peripheral surface and extending along the first light guide body.
In the first light guide body body and the second light guide body main body, the first peripheral surface and the second peripheral surface are separated from each other in a part in the longitudinal direction, and the first circumference in the other part in the longitudinal direction. The surface and the second peripheral surface are arranged so as to be close to each other.
The mounting flange portion is arranged in the part where the first peripheral surface and the second peripheral surface are separated from each other, and is integrally formed with the first light guide body main body and the second light guide body main body. ,
The rod-shaped light guide has a first opening formed between the first peripheral surface and the mounting flange portion, and a second opening formed between the second peripheral surface and the mounting flange portion. A rod-shaped light guide body including a portion. The rod-shaped light guide according to any one of claims 1 to 6 ,
A bracket for supporting the rod-shaped light guide is provided.
A plurality of steps for totally reflecting a part of the light traveling inside the light guide body are formed on the peripheral surface of the at least one light guide body, and the peripheral surface is formed on the central axis of the light guide body. On the other hand, it has a light emitting part on the opposite side to the plurality of steps.
The bracket comprises a bracket side portion that extends laterally through the peripheral surface and beyond the light emitting portion.
In a cross section perpendicular to the central axis of the light guide body, the center of the surface of the step is located away from the side of the bracket with respect to the normal of the surface of the step passing through the central axis. A vehicle lighting fixture that is characterized by this.

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