CN-121993753-A - Lamp for vehicle

Abstract

The present invention relates to a vehicle lamp, and more particularly, to a vehicle lamp capable of forming an optimal beam pattern while reducing installation space. The vehicle lamp according to the embodiment of the invention forms a beam pattern by at least one lamp module, and the at least one lamp module may include at least one light source that emits light in a forward direction, a light guide that guides light incident from the at least one light source through at least one incident portion to be emitted through an emitting portion provided laterally apart from the at least one incident portion, and an optical portion that transmits the light emitted from the light guide in the forward direction to form the beam pattern.

Inventors

• CUI BINGDONG
• ZHENG YINZHE
• HONG ZHIHAO
• Cui Yingao
• ZHENG ZHENYONG

Assignees

• SL株式会社

Dates

Publication Date

20260508

Application Date

20251014

Priority Date

20241107

Claims (20)

1. 1. A vehicle light comprising at least one light module for forming a beam pattern, wherein the at least one light module comprises: at least one light source for emitting light forward; A light guide part including at least one incident part and an emitting part laterally spaced apart from the at least one incident part, for guiding light incident from the at least one light source through the at least one incident part to be emitted through the emitting part, and And an optical unit configured to transmit light emitted from the light guide unit to the front side to form the light beam pattern.
2. 2. The vehicular lamp according to claim 1, wherein, The light guide unit makes light, which is incident on the at least one incident unit and advances forward, travel backward one or more times and are emitted forward by the emission unit.
3. 3. The vehicular lamp according to claim 1, wherein, The light guide part further includes a transmitting part for transmitting light between the at least one incident part and the emitting part, Wherein the transmitting portion includes a plurality of reflecting portions that reflect light incident on the at least one incident portion and transmit the light to the emitting portion.
4. 4. The vehicular lamp according to claim 3, wherein, At least one of the plurality of reflecting portions is configured by a plurality of reflecting regions.
5. 5. The vehicular lamp according to claim 4, wherein, At least one of the forming angle and curvature of one of the plurality of reflection regions is different from that of the other reflection region.
6. 6. The vehicular lamp according to claim 3, wherein, The reflection part of the plurality of reflection parts located at the front end of the emission part along the path of the light transmitted by the transmission part is formed by a single reflection area.
7. 7. The vehicular lamp according to claim 3, wherein, The plurality of reflecting portions includes: a first reflecting portion located in front of the at least one incident portion; A second reflection unit provided closer to the emission unit in a lateral direction than the first reflection unit; a third reflecting portion located behind the second reflecting portion, and And a fourth reflection unit provided closer to the emission unit in a lateral direction than the third reflection unit.
8. 8. The vehicular lamp according to claim 7, wherein, The second reflecting portion reflects the light reflected laterally by the first reflecting portion toward the emitting portion to travel rearward toward the third reflecting portion, The fourth reflecting portion reflects light laterally reflected by the third reflecting portion toward the emitting portion to travel forward toward the emitting portion.
9. 9. The vehicular lamp according to claim 7, wherein, At least one of the first to third reflection parts is constituted by a plurality of reflection regions.
10. 10. The vehicular lamp according to claim 7, wherein, The fourth reflecting portion is constituted by a single reflecting area.
11. 11. The vehicular lamp according to claim 1, wherein, One end of the two ends of the emitting part along the side direction, which is close to the optical axis of the optical part, is positioned at the rear side focus of the optical part.
12. 12. The vehicular lamp according to claim 1, wherein, The injection part is formed in a shape having a recess which is closer to the optical part from the center toward both sides.
13. 13. The vehicular lamp according to claim 1, wherein, The optical section includes: an incident surface on which the light emitted from the light guide portion is incident, and An emission surface for emitting light incident on the incidence surface, Wherein the incident surface is formed to protrude rearward, The exit surface is formed to protrude forward and has a larger curvature than the entrance surface.
14. 14. A vehicle lamp, comprising: A first lamp module including at least one first light source for emitting light forward, a first light guide part including a first incident part and a first emitting part laterally spaced from the first incident part and guiding light incident to the first incident part from the at least one first light source to be emitted through the first emitting part, an optical part for transmitting the light emitted from the first light guide part to form a first beam pattern, and The second lamp module is positioned in the opposite direction of the first lamp module with respect to the optical axis of the optical part, and comprises at least one second light source for emitting light forwards and a second light guide part for guiding the light incident from the at least one second light source to move towards the optical part to form a second light beam pattern.
15. 15. The vehicular lamp according to claim 14, wherein, The first light guide portion further includes: a first transmission unit configured to transmit light incident on the first incidence unit to the first emission unit, Wherein the first transfer portion includes a plurality of reflection portions provided along a traveling path of light incident to the first incidence portion.
16. 16. The vehicular lamp according to claim 15, wherein, The first transmitting portion makes light incident on the first incident portion and traveling forward travel more than once backward by the plurality of reflecting portions and is emitted forward by the first emitting portion.
17. 17. The vehicular lamp according to claim 14, wherein, The first emitting portion is disposed laterally closer to the optical axis of the optical portion than the first incident portion.
18. 18. The vehicular lamp according to claim 14, wherein, The at least one first light source is disposed laterally spaced apart by a larger pitch than the at least one second light source with reference to an optical axis of the optical portion.
19. 19. The vehicular lamp according to claim 14, wherein, The second light guide part includes at least one guide member having a front end and a rear end and guiding light incident to the rear end from the at least one second light source to travel toward the optical part by being emitted through the front end, Wherein a front end of each of the at least one guide member is formed to have a length smaller in a lateral direction than the first injection portion.
20. 20. The vehicular lamp according to claim 19, wherein, The at least one guide member includes an optical path adjusting portion that reflects a part of the light transmitted through the first light guide portion forward to form a third beam pattern when the second lamp module is turned off.

Description

Lamp for vehicle Technical Field The present invention relates to a vehicle lamp, and more particularly, to a vehicle lamp capable of forming an optimal beam pattern while reducing installation space. Background In general, a vehicle is equipped with various illumination lamps having an illumination function for easily confirming an object located around the vehicle when traveling at night and a signal function for informing a traveling state of the vehicle to surrounding vehicles or pedestrians. For example, the head lamps and fog lamps mainly realize the lighting function, while the turn signal lamps, the tail lamps, the brake lamps and the like are mainly used for the signal function, and the installation standards and specifications of various lamps are strictly regulated by regulations to fully play the functions. In such a vehicle lamp, an optical element such as a lens or the like is arranged along a direction in which light is emitted from a light source, and a path or brightness of the light emitted from the light source is controlled by the optical element to form a beam pattern satisfying a desired light distribution characteristic. At this time, in the case where a plurality of light sources are used according to light distribution characteristics, in order to make the beam pattern have uniform brightness, it is necessary to sufficiently mix the light emitted from each of the plurality of light sources, and for this purpose, it is necessary to make the light emitted from each of the plurality of light sources travel a sufficient distance in the vehicle lamp for mixing with each other and irradiate, but in this case, the size of the vehicle lamp increases along the direction of the light emitted from the plurality of light sources, thereby increasing the installation space. Therefore, there is a need to develop a solution capable of making a beam pattern have uniform brightness while reducing the setup space. [ Prior Art literature ] [ Patent literature ] Korean laid-open patent publication No. 10-2021-0045730 (2021.04.27 publication) Disclosure of Invention The present invention provides a vehicle lamp capable of reducing a required installation space by adjusting a path of light emitted from a light source and improving uniformity of brightness of a beam pattern. The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description. In order to achieve the above-described object, a vehicle lamp according to an embodiment of the present invention includes at least one lamp module for forming a beam pattern, wherein the at least one lamp module may include at least one light source that emits light forward, a light guide portion that includes at least one incident portion and an emitting portion that is provided laterally apart from the at least one incident portion, guides light incident from the at least one light source through the at least one incident portion to be emitted through the emitting portion, and an optical portion that transmits the light emitted forward from the light guide portion to form the beam pattern. The light guide may be configured to make light, which is incident on the at least one incident portion and advances forward, travel backward one or more times and be emitted forward by the emission portion. The light guide part may further include a transmitting part that transmits light between the at least one incident part and the emitting part, wherein the transmitting part may include a plurality of reflecting parts that reflect light incident on the at least one incident part and transmit the light to the emitting part. At least one of the plurality of reflecting portions may be configured with a plurality of reflecting regions. At least one of the forming angle and the curvature of one of the plurality of reflection regions may be different from that of another reflection region. The reflection part of the plurality of reflection parts located at the front end of the emission part along the path of the light transmitted through the transmission part may be formed using a single reflection area. The plurality of reflection parts may include a first reflection part positioned in front of the at least one incident part, a second reflection part disposed to be laterally closer to the emitting part than the first reflection part, a third reflection part positioned to be rearward of the second reflection part, and a fourth reflection part disposed to be laterally closer to the emitting part than the third reflection part. The second reflecting portion may reflect light laterally reflected by the first reflecting portion toward the emitting portion to travel rearward toward the third reflecting portion, and the fourth reflecting portion may reflect light laterally reflected by the third reflecting portion toward t