CN211146369U - Vehicle lamp - Google Patents
Vehicle lamp Download PDFInfo
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- CN211146369U CN211146369U CN201921778827.XU CN201921778827U CN211146369U CN 211146369 U CN211146369 U CN 211146369U CN 201921778827 U CN201921778827 U CN 201921778827U CN 211146369 U CN211146369 U CN 211146369U
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- light
- light guide
- control step
- lamp according
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Abstract
The utility model provides a vehicle lamp, it guarantees even luminous state to the light that jets out from the light guide body. The vehicle lamp (1) is provided with a light guide body (5) which guides light emitted from a light source (21) and emits the light in a predetermined direction, and the light guide body is provided with: a light guide unit (6) that guides light by forming light control steps (14, 15); a mounted part (9) mounted on a predetermined mounting part; and a connecting portion (7) that connects the light guide portion and the mounted portion, wherein a recess (20) is formed between the light guide portion and the mounted portion, and a part of the light control step is formed at a position facing one end surface of the mounted portion.
Description
Technical Field
The present invention relates to a vehicle lamp having a light guide body for guiding light emitted from a light source.
Background
In the vehicular lamp, for example, there are the following types: a light source and a light guide are disposed inside a lamp outer basket formed by a cover and a lamp housing, and light emitted from the light source is guided by the light guide and is emitted to the outside from an emission surface of the light guide (see, for example, patent document 1).
The light guide includes a light guide portion extending in a predetermined direction and an attached portion (referred to as an "attached leg portion" in patent document 1) protruding from the light guide portion, and the attached portion is attached to an attachment portion provided in a lamp housing or the like by fixing with a screw or the like. The attached portion protrudes from at least one end portion of the light guide portion in the longitudinal direction.
At least one end surface of the light guide portion in the longitudinal direction is formed as an incident surface into which light is incident. The light guide portion is formed with a reflection surface (inner surface reflection surface) having a light control step for reflecting incident light, and the light control step is formed in a state extending in the longitudinal direction of the light guide portion. The surface of the light guide portion opposite to the surface on which the reflection surface is formed is an emission surface.
The light guide unit includes a light guide portion that guides light emitted from the light source to the light guide portion, and a reflection surface that reflects light emitted from the light guide portion to the light guide portion.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2015-185296
SUMMERY OF THE UTILITY MODEL
Problem to be solved by the utility model
However, the attached portion of the light guide protrudes from the light guide portion, and it may be difficult to form a reflection surface at the portion of the light guide portion from which the attached portion protrudes, depending on the position of the attached portion with respect to the light guide portion.
In view of the above, an object of the present invention is to overcome the above-described problems and ensure a uniform light emission state with respect to light emitted from a light guide.
Means for solving the problems
First, a vehicle lamp according to the present invention is a vehicle lamp including a light guide body that guides light emitted from a light source to be emitted in a predetermined direction, the light guide body including: a light guide portion that guides light by forming a light control step; an attached portion attached to a predetermined attachment portion; and a connecting portion that connects the light guide portion and the mounted portion, a recess being formed between the light guide portion and the mounted portion, and a part of the light control step being formed at a position facing one end surface of the mounted portion.
Thus, since a part of the light guided by the light guide portion is also internally reflected by the light control step formed at the position facing the one end surface of the mounted portion, the light internally reflected by the light control step formed at the position facing the one end surface of the mounted portion can be emitted from the light guide portion.
Second, in the vehicle lamp according to the present invention, it is preferable that a part of the light control step formed at a position facing the one end surface of the attached portion is located at one end portion of the light guide portion in the light guide direction.
Thus, since a part of the light control step is formed at a position facing the mounted portion and one end of the light guide portion, the formation area of the light control step is increased.
Third, in the vehicle lamp according to the present invention, it is preferable that the light guide is provided with a standing wall portion that connects the light guide portion and the attached portion and has a different orientation from the connecting portion.
Thus, the light guide portion and the attached portion are connected to each other by the vertical wall portion facing different directions from the connecting portion in addition to the connecting portion.
Fourth, in the vehicle lamp according to the present invention, it is preferable that the light guide portion is formed by injection molding using a mold having a slider, and the recess and a part of the light control step facing the one end surface of the attached portion are formed by the slider of the mold.
Thus, a part of the light control step and the recess are formed by injection molding based on the slider.
Fifth, in the vehicle lamp according to the present invention, it is preferable that the light control step is formed by a continuous uneven shape, the mold includes two molds and the slider, and a joint between one of the molds and the slider coincides with a vertex or a bottom point of the light control step.
Thus, unnecessary seam lines due to the seam between the mold and the slider are not formed in the light control step.
Effect of the utility model
According to the present invention, since a part of the light guided by the light guide portion is also internally surface-reflected by the light control step formed at the position facing the one end surface of the mounted portion, the light internally surface-reflected by the light control step formed at the position facing the one end surface of the mounted portion can be emitted from the light guide portion, and a uniform light emission state can be ensured for the light emitted from the light guide body.
Drawings
Fig. 1 is a view showing an embodiment of a vehicle lamp according to the present invention together with fig. 2 to 11, and this view is a schematic front view of the vehicle lamp.
Fig. 2 is a front view of the light guide.
Fig. 3 is a perspective view of the light guide.
Fig. 4 is a plan view of the light guide.
Fig. 5 is a sectional view taken along line V-V of fig. 2.
Fig. 6 is a sectional view taken along line VI-VI of fig. 2.
Fig. 7 is a sectional view taken along line VII-VII of fig. 2.
Fig. 8 is an exploded perspective view showing a mold and a light guide.
Fig. 9 is a cross-sectional view showing a state where the light guide is formed by a mold.
Fig. 10 is a perspective view showing an example in which the second light-controlling step is also formed at the tip end portion of the light guide.
Fig. 11 is a perspective view showing an example in which the first light-controlling step and the second light-controlling step are formed as convex steps.
Description of the reference numerals
1: a vehicular lamp; 5: a light guide; 6: a light guide part; 7: a connecting portion; 9: a second mounted portion; 10: a standing wall portion; 14: a first light control step; 15: a second light control step; 20: a recess; 21: a light source; t: a vertex; 100: a mold; 101: a first die; 102: a second mold; 103: a slide block.
Detailed Description
Hereinafter, a mode for implementing the vehicle lamp according to the present invention will be described with reference to the drawings.
The vehicle lamp 1 is attached to a predetermined position such as a front end portion, a rear end portion, a side surface portion, and a top surface portion of a vehicle body. Hereinafter, the direction of light emitted from the vehicle lamp 1 will be described as front, and the front, rear, top, bottom, left, and right directions will be described. However, the front, rear, upper, lower, left, and right directions shown below are for convenience of description, and the present invention is not limited to these directions.
The vehicle lamp 1 includes a lamp housing 2 having an opening at the front, and a cover (not shown) that closes the opening of the lamp housing 2 (see fig. 1). The lamp housing 2 and the cover constitute a lamp outer basket 3, and an internal space of the lamp outer basket 3 forms a lamp chamber 4.
The light guide 5 is made of a transparent material such as resin or glass, and includes a light guide portion 6, a connecting portion 7, a first attached portion 8, a second attached portion 9, and a standing wall portion 10 (see fig. 2 to 7).
The light guide 5 is disposed in the lamp chamber 4 by attaching the first attached portion 8 and the second attached portion 9 to an unillustrated attachment member disposed in the lamp chamber 4 or a predetermined unillustrated attachment portion provided in the lamp housing 2 or the like by means of screw fixing or the like.
The light guide portion 6 has a longitudinal direction in the lateral direction, and an incident surface 11 (see fig. 2) is formed at one end surface in the longitudinal direction. In the light guide portion 6, a portion near the tip on the opposite side of the incident surface 11 in the longitudinal direction is a light guide side end portion 12, and an end portion on the opposite side of the incident surface 11 in the longitudinal direction is a tip portion 13 (see fig. 3 to 5). The tip 13 is formed in a hemispherical shape, for example. However, the distal end portion 13 may not be provided.
A formation concave portion 6a that opens rearward is formed in the light guide portion 6, and the formation concave portion 6a is formed in a portion other than the light guide side end portion 12 and the tip end portion 13. A first light control step 14 is formed on the rear surface of the portion of the light guide portion 6 where the formation recess 6a is formed. The first light control step 14 is a concave step continuously formed in a concave-convex shape in the longitudinal direction of the light guide portion 6 and located inside the formation concave portion 6a (see fig. 7).
Although the example in which the forming concave portion 6a is formed in the light guide portion 6 and the first light-controlling step 14 is formed in the portion where the forming concave portion 6a is formed has been described above, the first light-controlling step 14 may be formed as a convex step in the rear end portion of the light guide portion 6 without forming the forming concave portion 6a in the light guide portion 6. However, by forming the first light control step 14 as a concave step, the thickness of the light guide portion 6 in the front-rear direction can be reduced, and in addition to the reduction in size of the light guide 5, interference between the first light control step 14 and another structure of the vehicle lamp 1 such as the lamp housing 2 can be easily avoided.
In the light guide portion 6, a second light control step 15 is formed on the rear surface of the light guide portion-side end portion 12 (see fig. 3 to 5). The second light-controlling step 15 is formed as a convex step continuously formed in the longitudinal direction of the light-guiding portion 6 and not located inside the forming concave portion 6a (see fig. 6). The second light-controlling step 15 and the first light-controlling step 14 are formed continuously, and the shape and size of one of the irregularities of the second light-controlling step 15 are the same as those of one of the irregularities of the first light-controlling step 14. Therefore, in the longitudinal direction of the light guide portion 6, the width of one irregularity of the second light-controlling step 15 is the same as the width of one irregularity of the first light-controlling step 14, and the height of the irregularity of the second light-controlling step 15 is the same as the height of the irregularity of the first light-controlling step 14.
As described above, the formation concave portion 6a is formed in the light guide portion 6, the upper wall portion of the formation concave portion 6a is defined as the first wall portion 16, and the lower wall portion of the formation concave portion 6a is defined as the second wall portion 17 (see fig. 3 to 7). The end surface of the first wall 16 on the light-guiding-portion-side end 12 side in the longitudinal direction of the light-guiding portion 6 is formed as a boundary end surface 16a (see fig. 3 and 4) indicating the boundary between the forming recess 6a and the light-guiding-side end 12.
The boundary end face 16a may coincide with the vertex T of the unevenness of the light control step (a set of vertices, that is, a line segment extending vertically) in the front-rear direction (see fig. 4), or the boundary end face 16a may coincide with the bottom point L of the unevenness of the second light control step 15 in the front-rear direction.
As described above, the first light-controlling step 14 and the second light-controlling step 15 are formed continuously in the longitudinal direction of the light-guiding portion 6, and the surfaces of the first light-controlling step 14 and the second light-controlling step 15 are formed as the reflection surfaces 18 that internally reflect light (see fig. 3 to 5). Further, the front surface of the light guide unit 6 is formed as an emission surface 19 (see fig. 6 and 7).
The connecting portion 7 is formed in a plate shape (see fig. 1) protruding rearward from a portion of the light guide side end portion 12 where the second light control step 15 is not formed, for example, a lower end portion of the light guide side end portion 12, and having a thickness direction in a vertical direction
The first attached portion 8 protrudes downward from the end portion of the light guide portion 6 on the incident surface 11 side, for example (see fig. 2). The first mounting target portion 8 is formed with a screw insertion hole 8a penetrating in the front-rear direction. When the first attached portion 8 is attached to an unillustrated attaching member provided in an unillustrated attaching member or the lamp housing 2, an unillustrated attaching screw is inserted into the screw insertion hole 8 a.
The second attached portion 9 is provided continuously with the rear surface of the connecting portion 7, and is connected to the light-guiding-side end portion 12 of the light-guiding portion 6 via the connecting portion 7 (see fig. 3 to 6). The second mounting target portion 9 is formed in a truncated cone shape, for example, and has a screw fixing hole 9a opening rearward. When the second portion to be mounted 9 is mounted to a mounting portion provided in a mounting member, the lamp housing 2, or the like, a mounting screw, not shown, is screwed into the screw fixing hole 9 a.
The lower end of the second attached portion 9 is continuous with the rear surface of the coupling portion 7, and the portion other than the lower end is positioned above the coupling portion 7 (see fig. 6). A portion of the front surface of the second attached part 9 that is not continuous with the coupling part 7 is located at a position facing the second light control step 15.
As described above, the light guide 5 includes the light guide portion 6, the coupling portion 7, and the second attached portion 9, and a part of the second attached portion 9 is located at a position facing the second light control step 15 formed on the light guide side end portion 12. Therefore, the light guide 5 is formed with a recess 20 that is surrounded by the light guide unit side end 12 of the light guide unit 6, the coupling portion 7, and the second attached portion 9 and that opens upward.
The standing wall portion 10 protrudes rearward from the light-guiding-side end portion 12 of the light-guiding portion 6, and has a rear surface with a portion continuous with the second attached portion 9 and a lower end continuous with one end portion of the connecting portion 7 in the left-right direction (see fig. 3 to 5). The standing wall portion 10 is formed in a flat plate shape facing the left-right direction. Therefore, the standing wall portion 10 is configured to connect the light-guiding-side end portion 12 of the light-guiding portion 6 and the second attached portion 9 and to have a different orientation from the connecting portion 7.
As described above, since the rising wall portion 10 is provided in the light guide 5, and the light guide portion 6 and the second attached portion 9 are connected to each other by facing the rising wall portion 10 different from the connecting portion 7 in addition to the connecting portion 7, the strength of the light guide 5 is increased, and in a state where the second attached portion 9 is attached to an attachment portion provided in the lamp housing 2 or the like, stable positional accuracy of the light guide portion 6 can be ensured, and an appropriate light distribution pattern of the emitted light can be ensured.
In the lamp chamber 4, the light sources 21, 21 are arranged at positions facing the incident surfaces 11, 11 of the light guide 5, respectively (see fig. 1). as the light source 21, for example, a light Emitting Diode (L ED: L lighting Diode) is used, and a plurality of light sources 21 may be arranged at positions facing the incident surface 11.
In the vehicle lamp 1 configured as described above, when light is emitted from the light source 21, the emitted light enters from the entrance surface 11. The incident light is guided toward the distal end portion 13 while being internally reflected and diffused by the first light control step 14 and the second light control step 15 in the light guide portion 6.
The light reflected on the inner surface by the first light controlling step 14 and the second light controlling step 15 is emitted from the emission surface 19 as diffused light, and is irradiated to the outside through the cover.
The light guide 5 is formed by injection molding using a mold 100, for example (see fig. 8 and 9).
The mold 100 has a first die 101, a second die 102, and a slide 103. The first mold 101 mainly forms a first molding recess 101a for forming a substantially half portion of the front side of the light guide part 6. In the second mold 102, a second molding recess 102a is mainly formed for forming a rear-side substantially half portion of the light guide portion 6, the coupling portion 7, the second attached portion 9, and the standing wall portion 10. An insertion recess 102b into which the slider 103 is inserted is formed in the second die 102, and the insertion recess 102b communicates with the second molding recess 101 a.
In the mold 100, the slider 103 is inserted into the concave portion 102b in a state where the first die 101 and the second die 102 are butted, thereby forming a cavity 100a as a space filled with a transparent molten resin.
When the molten resin filled in the cavity 100a is solidified, the slider 103 is drawn out from the insertion recess 102b, the first mold 101 and the second mold 102 are opened, and the solidified molten resin is taken out from the cavity 100a to form the light guide 5. At this time, the second light-controlling step 15 and the recess 20 are formed by the slider 103.
In this way, the light guide 5 is formed by injection molding based on the mold 100, and the second light controlling step 15 and the recess 20 that face one end surface of the second mounted portion 9 are formed by the slider 103. Therefore, since the recess 20 and a part of the light control step are formed by injection molding based on the slider 103, the light guide 5 can be easily formed with high molding accuracy.
In the formation of the vehicle lamp 1 using the mold 100, the joint M between the second mold 102 and the slider 103 coincides with the apex T (set of apexes, that is, a line segment extending vertically) of the unevenness of the light control step. Therefore, unnecessary seam lines due to the seam M between the second mold 102 and the slider 103 are not formed in the first light-controlling step 14 and the second light-controlling step 15, and the molding accuracy of the light guide 5 can be improved.
Further, since an unnecessary seam line due to the seam M between the second mold 102 and the slider 103 is not formed in the first light control step 14 and the second light control step 15, the light emission patterns of the light reflected by the inner surfaces of the first light control step 14 and the second light control step 15 do not differ, and a uniform light emission state without difference in light emission patterns can be ensured.
Although the example of the vehicle lamp 1 provided with the standing wall portion 10 is described above, the vehicle lamp 1 may be configured without the standing wall portion 10. In this case, the second light-controlling step 15 may be formed at the distal end portion 13 continuously with the second light-controlling step 15 formed at the light-guiding portion-side end portion 12 of the light-guiding portion 6 (see fig. 10).
In this way, by forming the second light control step 15 at the distal end portion 13 in addition to the light guide side end portion 12, the area of the reflection surface 18 is increased, and thus light can be irradiated over a wide range.
In addition, although the example in which the first light control step 14 is formed as the concave step and the second light control step 15 is formed as the convex step is described above, both the first light control step 14 and the second light control step 15 may be formed as the convex step (see fig. 11). In this case, since the first light control step 14 is a convex step, the first wall portion 16 is not formed. Thus, the material for forming the vehicle lamp 1 can be reduced by the amount of not forming the first wall portion 16, enabling a reduction in the manufacturing cost of the vehicle lamp 1.
In this case, the second light-controlling step 15 may be formed at the distal end portion 13 continuously with the second light-controlling step 15 formed at the light-guiding portion-side end portion 12 of the light-guiding portion 6.
As described above, in the vehicle lamp 1, the light guide member 5 is provided with the light guide portion 6, the coupling portion 7, and the second attached portion 9, the recess 20 is formed between the light guide portion 6 and the second attached portion 9, and the second light control step 15, which is a part of the light control step, is formed at a position facing one end surface of the second attached portion 9.
Therefore, since a part of the light guided by the light guide unit 6 is internally reflected by the second light controlling step 15 formed at the position facing the one end surface of the second attached portion 9 in addition to the first light controlling step 14, the light internally reflected by the second light controlling step 15 formed at the position facing the one end surface of the second attached portion 9 can be emitted from the light guide unit 6, and a uniform light emission state can be ensured with respect to the light emitted from the light guide 5.
In addition, since light is reflected by the inner surface of the second light control step 15 in addition to the first light control step 14, the irradiation range of light can be widened.
Further, the second light control step 15 formed at a position facing the one end surface of the second attached portion 9 is located at one end portion of the light guide portion 6 in the light guiding direction. Therefore, since the second light controlling step 15 is formed at the position facing the second attached portion 9 and at the one end of the light guiding portion 6, the formation area of the second light controlling step 15 is increased, and light can be irradiated in a wide range.
Further, although there is a possibility that the transparent light guide 5 is visually recognized through the cover in a state where the vehicle lamp 1 is visually recognized from the outside at the time of non-lighting, in a case where the rear surface side of the transparent light guide 5 is visually recognized, since the second light control step 15 continuous to the first light control step 14 is formed at the one end portion of the light guide portion 6, the light control steps can be visually recognized over the entire light guide portion 6, and the design and the visibility can be improved.
Claims (9)
1. A vehicle lamp having a light guide body for guiding light emitted from a light source to emit the light in a predetermined direction,
the light guide body has: a light guide portion that guides light by forming a light control step; an attached portion attached to a predetermined attachment portion; and a connecting portion that connects the light guide portion and the attached portion,
a recess is formed between the light guide portion and the mounted portion,
a part of the light control step is formed at a position facing one end surface of the mounted portion.
2. The vehicular lamp according to claim 1,
a part of the light control step formed at a position facing one end surface of the attached portion is located at one end portion of the light guide portion in the light guide direction.
3. The vehicular lamp according to claim 1 or 2,
the light guide is provided with a standing wall portion that connects the light guide portion and the attached portion and faces a direction different from the connecting portion.
4. The vehicular lamp according to claim 1 or 2,
the light guide part is formed by injection molding based on a mold having a slider,
the recess and a portion of the light controlling step that faces one end surface of the mounted portion are formed by a slider of the mold.
5. The vehicular lamp according to claim 4,
the light-controlling steps are formed of a continuous concavo-convex shape,
the mold has two dies and the slide,
the seam between the mold and the slider on one side coincides with the apex or the bottom point of the light control step.
6. The vehicular lamp according to claim 1,
the light guide part is formed with a formation recess that opens rearward, and the light control step is formed on a rear surface of a portion of the light guide part where the formation recess is formed, the light control step being located inside the formation recess.
7. The vehicular lamp according to claim 6,
the forming recess is formed by one wall portion in the longitudinal direction of the light guide portion, and the wall portion is located below the light guide portion.
8. The vehicular lamp according to claim 6,
the forming recess is formed by two wall portions in the longitudinal direction of the light guide portion, one wall portion is positioned above the light guide portion, the other wall portion is positioned below the light guide portion,
an end surface of the one wall portion on the opposite side of the light incidence direction in the longitudinal direction is formed as a boundary end surface.
9. The vehicular lamp according to claim 8,
the light-controlling steps are formed of a continuous concavo-convex shape,
the boundary end surface coincides with a vertex or a bottom point of the concavity and convexity of the light control step in the front-rear direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-202839 | 2018-10-29 | ||
| JP2018202839A JP2020071914A (en) | 2018-10-29 | 2018-10-29 | Vehicular lighting fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211146369U true CN211146369U (en) | 2020-07-31 |
Family
ID=70549593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921778827.XU Active CN211146369U (en) | 2018-10-29 | 2019-10-22 | Vehicle lamp |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2020071914A (en) |
| CN (1) | CN211146369U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034017A (en) * | 2021-09-28 | 2022-02-11 | 东风汽车集团股份有限公司 | Light guide structure, car light and car |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023219044A1 (en) * | 2022-05-13 | 2023-11-16 | 株式会社小糸製作所 | Vehicle lamp fitting |
-
2018
- 2018-10-29 JP JP2018202839A patent/JP2020071914A/en active Pending
-
2019
- 2019-10-22 CN CN201921778827.XU patent/CN211146369U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034017A (en) * | 2021-09-28 | 2022-02-11 | 东风汽车集团股份有限公司 | Light guide structure, car light and car |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020071914A (en) | 2020-05-07 |
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