CN210069733U

CN210069733U - Optical system for car lamp and tail lamp

Info

Publication number: CN210069733U
Application number: CN201920897723.4U
Authority: CN
Inventors: 李标; 于杰
Original assignee: Jiaxing Hella Lighting Co Ltd
Current assignee: Jiaxing Hella Lighting Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-02-14
Anticipated expiration: 2029-06-14

Abstract

The utility model provides an optical system and a tail lamp for a car lamp, the optical system comprises a position lamp unit, a brake lamp unit and a steering lamp unit, the position lamp unit comprises a first light source, a light guide and a position lamp light distribution lens, and the light emitted by the first light source is emitted outwards through the light guide and the position lamp light distribution lens to realize the function of the position lamp; the stop lamp unit comprises a second light source and a red transparent stop lamp light distribution lens, optical patterns are arranged on the stop lamp light distribution lens, and light emitted by the second light source is emitted outwards through the stop lamp light distribution lens to realize a stop lamp function; the steering lamp unit comprises a third light source and a reflection bowl array, the reflection bowl array comprises a plurality of reflection bowls, the third light source corresponds to each reflection bowl and is provided with at least one LED lamp bead, and light emitted by the third light source is reflected by the reflection bowl array and then is emitted out to realize the function of the steering lamp. After adopting above-mentioned technical scheme, car light simple structure can realize multiple car light signal function in less car light space.

Description

Optical system for car lamp and tail lamp

Technical Field

The utility model relates to a car light technical field especially relates to an optical system and a tail lamp for car light.

Background

In the field of automotive lighting, light sources including LED light sources are often used, placed in various automotive light fixtures including tail lights.

However, the existing automobile lamp is generally single in function, bulky in structure and more in parts, and various functional lamps are separately arranged, so that multiple car lamp signal functions are difficult to realize in a small car lamp space.

Therefore, it is necessary to develop an optical system having a simple structure and fewer components, and capable of simultaneously realizing a plurality of vehicle lamp signal functions in a small vehicle lamp space, and a tail lamp having the optical system.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model aims to provide a simple structure, spare part are less and can realize the optical system of multiple car light signal function and have this optical system's tail lamp in less car light space simultaneously.

The utility model discloses an optical system for a car lamp, which comprises a position lamp unit, a brake lamp unit and a steering lamp unit;

the position lamp unit comprises a first light source, a light guide and a position lamp light distribution lens, and light emitted by the first light source is emitted outwards through the light guide and the position lamp light distribution lens to realize a position lamp function;

the stop lamp unit comprises a second light source and a red transparent stop lamp light distribution lens, optical patterns are arranged on the stop lamp light distribution lens, and light emitted by the second light source is emitted outwards through the stop lamp light distribution lens and is used for realizing the function of the stop lamp;

the steering lamp unit comprises a third light source and a reflection bowl array, the reflection bowl array comprises a plurality of reflection bowls, the third light source corresponds to each reflection bowl and is provided with at least one LED lamp bead, and light emitted by the third light source is emitted outwards after being reflected by the reflection bowl array and is used for achieving the function of the steering lamp.

Preferably, the light distribution lens of the stop lamp comprises at least two box-shaped lens units, a step structure is formed between the lens units, and the light distribution lens is integrally formed.

Preferably, the light guide is strip-shaped, and the first light source is arranged at the first end of the light guide;

and a second end of the light guide, which is far away from the first light source, is provided with an ink material for weakening light emission.

Preferably, the first light source is a position lamp PCB, an LED lamp bead is arranged on the position lamp PCB, and the LED lamp bead corresponds to the first end of the light guide;

and a shading panel is arranged at the joint of the position lamp PCB and the light guide and is used for shading light rays of the LED lamp beads which are directly emitted to the outside of the vehicle lamp.

Preferably, a first optical pattern for converging light rays is arranged on one surface, facing the second light source, of the stop lamp light distribution lens;

and a second optical pattern for diffusing light is arranged on one surface of the stop lamp light distribution lens, which is far away from the second light source.

Preferably, the first optical pattern is a fresnel pattern.

The utility model also discloses a tail lamp, which comprises a shell, a mounting bracket, a face shield and the optical system;

the position lamp unit, the brake lamp unit and the turn lamp unit in the optical system are partially or completely arranged on the mounting bracket, and the mounting bracket is fixedly connected with the shell;

the mask is fixedly connected with the shell and forms an accommodating space together with the shell, and the optical system and the mounting bracket are positioned in the accommodating space;

the positions of the face mask corresponding to the position lamp unit, the brake lamp unit and the steering lamp unit are colorless and transparent first areas, and the rest parts of the face mask are opaque second areas; the face mask is integrally formed through a double-shot injection molding process.

Preferably, a light guide installation groove is arranged on the installation support;

the light guide is arranged in the light guide installation groove;

the position lamp light distribution lens is fixedly connected to a part, corresponding to the position of the light guide installation groove, on the face mask.

Preferably, the second light source of the stop lamp unit is a stop lamp PCB, and the stop lamp PCB is provided with an LED lamp bead;

the mounting bracket is provided with an inward extending space for accommodating the stop lamp light distribution lens;

the stop lamp PCB is fixedly connected to one surface, facing the mounting bracket, of the stop lamp light distribution lens, and the stop lamp light distribution lens is fixedly connected to the inward extending space of the mounting bracket.

Preferably, the third light source of the steering lamp unit is a steering lamp PCB, an LED lamp bead array is arranged on the steering lamp PCB, the steering lamp PCB is located above the reflecting bowl array, a light-transmitting opening corresponding to each reflecting bowl is arranged on the upper edge of the reflecting bowl array, and the LED lamp beads on the steering lamp PCB correspond to the light-transmitting openings of each reflecting bowl respectively;

the reflection bowl array is fixedly connected with the mounting bracket, and the steering lamp PCB is clamped and fixed between the reflection bowl array and the mounting bracket.

After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:

1. the structure is simple, the parts are fewer, and the installation is convenient;

2. the system can realize various car lamp signal functions in a small car lamp space, and the optical effect of the car lamp is good;

3. the cost is low and the economic benefit is high.

Drawings

Fig. 1 is an exploded view of a tail lamp with an optical system according to an embodiment of the present invention;

FIG. 2 is an external view of the tail light of FIG. 1;

fig. 3 is a cross-sectional view of section a-a in fig. 2.

Reference numerals:

100-shell, 200-mounting bracket, 210-light guide mounting groove, 220-inward extending space, 300-face shield, 310-second region, 320-first region, 410-first light source, 420-light guide, 421-connecting part, 422-ink material, 430-position light distribution lens, 440-shading panel, 510-second light source, 520-stop light distribution lens, 610-third light source, 620-reflecting bowl array, 621-reflecting bowl, 622-light transmitting opening, 700-driving PCB, I-position light region, II-stop light region, and III-steering light region.

Detailed Description

The advantages of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the following description, suffixes such as "module", "part", or "unit" used to indicate elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module" and "component" may be used in a mixture.

The utility model discloses an optical system, see attached figure 1, attached figure 2, attached figure 3, optical system includes:

-position light unit

The position light unit includes a first light source 410, a light guide 420, and a position light distribution lens 430. The light guide 420 is a bar shape, and the first light source 410 is fixedly connected to a first end of the light guide 420. The first light source 410 is a position lamp PCB, and LED lamp beads are arranged on the position lamp PCB. The light guide 420 comprises a light guide 420 body and a connecting portion 421 fixedly arranged at the first end of the light guide 420 body, the connecting portion 421 is fixedly connected with the position lamp PCB, and the LED lamp beads correspond to the first end of the light guide 420 body, so that most of light emitted by the LED lamp beads can enter the light guide 420 from the end of the light guide 420 body. A second end of the light guide 420 remote from the first light source 410 is provided with an ink material 422 for attenuating the light emission. Specifically, the second end of the first light source 410 is printed with the INK material 422 through the INK process, and the INK material 422 can absorb a part of the light, so that the light reflected by the second end of the light guide 420 is reduced, and the bright spot at the tail end after the light guide 420 is lighted is avoided. The position lamp PCB with the junction of light guide 420 is provided with shading panel 440, shading panel 440 is used for sheltering from the light of LED lamp pearl direct outside the car light, can avoid simultaneously from the outside direct structure of watching light guide 420 and position lamp PCB junction of car light, guarantees the aesthetic property of car light. Preferably, the light shield panel 440 is fixedly connected to the position lamp PCB and the light guide 420, and a portion of the light shield panel 440 may be sandwiched between the position lamp PCB and the light guide 420. The surface of the position light distribution lens 430 is provided with dermatoglyph for enabling light to uniformly emit outwards through the position light distribution lens 430. Preferably, a partial area of the surface of the light guide 420 is also provided with a skin pattern for light uniformization, which can prevent diffraction patterns from occurring after the light guide 420 is lighted. Light emitted by the LED lamp beads on the position lamp PCB sequentially passes through the light guide 420 and the position lamp light distribution lens 430 to be emitted outwards, the light emitting requirement of the position lamp is met, and the position lamp PCB is used for achieving the function of the position lamp. The position lamp is designed by adopting the light guide 420 and is matched with the long strip-shaped structure of the position lamp, the advantage of adopting the strip-shaped light guide 420 is that the number of LEDs for illumination is small, only an LED light source needs to be connected into one port of the light guide 420, the light guide property of the light guide 420 is uniform, the depth effect of vision can be met, and the light distribution regulation requirement of the position lamp with low light intensity requirement can be met.

Brake light unit

The stop lamp unit includes a second light source 510 and a red transparent stop lamp light distribution lens 520. The second light source 510 is a brake lamp PCB, and LED lamp beads are arranged on the brake lamp PCB. An optical pattern for light distribution is arranged on the stop lamp light distribution lens 520. Specifically, a first optical pattern for converging light rays is arranged on one surface, facing the stop lamp PCB, of the stop lamp light distribution lens 520; one side of the stop lamp light distribution lens 520, which is far away from the stop lamp PCB, is provided with a second optical pattern for diffusing light. Preferably, the first optical pattern is a fresnel pattern for converging and collimating light, and the second optical pattern is a corn-like optical pattern for uniformly diffusing light. Light that LED lamp pearl sent on the stop lamp PCB passes through the outside outgoing of stop lamp grading lens 520 is assembled, the collimation through first optics decorative pattern earlier promptly, passes through the even outward diffusion outgoing of second optics decorative pattern again, satisfies the light-emitting requirement of stop lamp for realize the stop lamp function. In this embodiment, the grading lens of stop lamp contains two box-like lens units, be stair structure between the lens unit, grading lens integrated into one piece, stop lamp PCB also correspondingly is provided with two, respectively with box-like lens unit corresponding. The number of the lens units is not limited to two, and the lens units can be flexibly arranged according to the design requirements of the vehicle lamp. The stop lamp plays a warning role, the requirement of the laws and regulations on the light intensity is high, the LED light source is adopted to penetrate the lens with the optical patterns directly, the loss rate of the light energy is low, and the optical patterns on the incident surface and the emergent surface of the lens can respectively play the effects of converging light and homogenizing light. The red light source is low in light intensity and high in cost, and the red plastic lens is low in cost and good in economical efficiency.

-a turn light unit.

The turn signal lamp unit comprises a third light source 610 and a reflective bowl array 620, the reflective bowl array 620 comprising a plurality of reflective bowls 621 connected together. Preferably, the plurality of reflective bowls 621 are integrally formed and aluminized on the reflective area surface to form the reflective bowl array 620. The third light source 610 is a steering lamp PCB, an LED array is arranged on the steering lamp PCB, at least one LED lamp bead is arranged on the steering lamp PCB corresponding to each reflecting bowl 621, and light emitted by LEDs on the steering lamp PCB is emitted outwards after being reflected by the reflecting bowl array 620 and is used for achieving the function of the steering lamp.

Further, the tail light includes a housing 100, a mounting bracket 200, a face mask 300, and the optical system described above.

The position lamp unit, the stop lamp unit, and the turn lamp unit in the optical system are partially or entirely mounted to the mounting bracket 200. That is, the components of the position light unit, the stop light unit, and the turn light unit may be all mounted to the mounting bracket 200; alternatively, a portion of the components may be mounted to the mounting bracket 200 and another portion of the components may be mounted to the mask 300 or the shell 100.

Specifically, in the present embodiment, for the position light unit, the mounting bracket 200 is provided with a light guide 420 mounting groove 210, and the light guide 420 is mounted in the light guide 420 mounting groove 210. The position light distribution lens 430 is fixedly attached to the face mask 300, preferably by laser welding or ultrasonic welding. The position light distribution lens 430 has a shape and a position corresponding to the installation groove 210 of the light guide 420, so that the light emitted from the light guide 420 in the installation groove 210 of the light guide 420 can be effectively emitted to the outside through the position light distribution lens 430.

For the stop lamp unit, the mounting bracket 200 has an inward-extending space 220 that accommodates the stop lamp light distribution lens 520. Stop lamp PCB fixed connection in stop lamp grading lens 520 orientation the one side of installing support 200 deviates from the one side of stop lamp grading lens 520 light-emitting direction promptly, preferably, through the mode fixed connection of rivet hot. The stop lamp light distribution lens 520 is fixedly attached to the mounting bracket 200 in the inward extending space 220, preferably by screws.

Correspond the indicator unit, be provided with LED lamp pearl array on the indicator PCB, the indicator PCB is located the top of reflection bowl array 620, the last border of reflection bowl array 620 is equipped with the printing opacity mouth 622 corresponding to every reflection bowl 621, LED lamp pearl on the indicator PCB corresponds the printing opacity mouth 622 of each reflection bowl 621 respectively. Light rays emitted by the LED lamp beads are emitted to the reflecting bowl 621 through the light transmitting opening 622 and are emitted outwards after being reflected by the reflecting bowl 621, and therefore the function of the steering lamp is achieved. The reflecting bowl array 620 is fixedly connected to the mounting bracket 200, and the steering lamp PCB is clamped and fixed between the reflecting bowl array 620 and the mounting bracket 200. The steering lamp adopts the design of the indirect reflection formula of LED, is based on the structure of adjacent position lamp, stop lamp and the comprehensive consideration of cost, and the PCB board that adopts the centre gripping formula is placed in the upside of reflection bowl array 620, then need not adopt the flexible PCB soft board of high cost to place at its back, also need not adopt the setting of the solitary hard PCB board of polylith at its back.

The mounting bracket 200 is fixedly connected to the housing 100, preferably by screws. The mask 300 is fixedly connected to the housing 100, preferably by welding, and forms an accommodating space together with the housing 100, in which the optical system and the mounting bracket 200 are located.

The position that corresponds on the face guard 300 position lamp unit, stop lamp unit, indicator unit is colorless transparent first region 320, the remaining part on the face guard 300 is opaque second region 310, face guard 300 is through double-shot moulding technology integrated into one piece. Namely, the position light unit, the stop light unit and the turn light unit emit light beams to be emitted outwards through the first area 320, so that the signal functions of the position light, the stop light and the turn light are realized. Preferably, the area of the face mask 300 corresponding to the turn light unit is provided with an optical pattern for diffusing light, such as a corn-shaped optical pattern, so that the light is uniformly emitted outward.

Preferably, a driver PCB700 is further disposed in the tail light, and the driver PCB700 is mounted on a side of the mounting bracket 200 facing the housing 100 for providing driving to the position light PCB and/or the stop light PCB. The driving PCB700 is separately provided from the position lamp PCB and the stop lamp PCB, so that the volume of each PCB can be reduced, thereby making full use of the space in the vehicle lamp.

Referring to fig. 2, for the appearance diagram of the tail lamp of the present invention, it can be seen from the figure that the stop lamp area II in the tail lamp is approximately set at a position slightly to the right in the middle of the tail lamp, the turn lamp area III is located below the stop lamp area II, and the position lamp area I extends to the upper right of the stop lamp area II from the left of the turn lamp area III upwards to the right.

This application optical system and tail lamp simple structure, spare part are less, can realize multiple car light signal function simultaneously in less car light space, and optical effect is outstanding, and the cost is lower, and economic benefits is high.

It should be noted that the embodiments of the present invention have better practicability and are not intended to limit the present invention in any way, and any person skilled in the art may change or modify the technical contents disclosed above to equivalent effective embodiments, but all the modifications or equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An optical system for a vehicle lamp, comprising a position lamp unit, a stop lamp unit and a turn lamp unit,

2. The optical system of claim 1,

the grading lens of stop lamp contains two at least box-like lens units, be the stair structure between the lens unit, grading lens integrated into one piece.

3. The optical system of claim 1,

the light guide is strip-shaped, and the first light source is arranged at the first end of the light guide;

4. The optical system of claim 3,

the first light source is a position lamp PCB, an LED lamp bead is arranged on the position lamp PCB, and the LED lamp bead corresponds to the first end of the light guide;

5. The optical system of claim 1,

one surface of the stop lamp light distribution lens facing the second light source is provided with a first optical pattern for converging light;

6. The optical system of claim 5,

the first optical pattern is a fresnel pattern.

7. A tail light is characterized in that a tail light is provided,

comprising a housing, a mounting bracket, a face mask, and the optical system of any one of claims 1-6;

8. The tail light of claim 7,

the mounting bracket is provided with a light guide mounting groove;

the light guide is arranged in the light guide installation groove;

9. The tail light of claim 7,

the second light source of the brake lamp unit is a brake lamp PCB, and the brake lamp PCB is provided with LED lamp beads;

10. The tail light of claim 7,

the third light source of the steering lamp unit is a steering lamp PCB, an LED lamp bead array is arranged on the steering lamp PCB, the steering lamp PCB is positioned above the reflecting bowl array, a light transmitting opening corresponding to each reflecting bowl is formed in the upper edge of the reflecting bowl array, and the LED lamp beads on the steering lamp PCB correspond to the light transmitting openings of the reflecting bowls respectively;