CN112628683B

CN112628683B - Lighting device for vehicle

Info

Publication number: CN112628683B
Application number: CN201910953105.1A
Authority: CN
Inventors: 潘仲强; 赖成志; 李昭霈
Original assignee: Tande Technology Co ltd
Current assignee: Tande Technology Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2023-02-28
Anticipated expiration: 2039-10-09
Also published as: CN112628683A

Abstract

The application provides a vehicle lighting device of dipped headlight, contains light emitting module, condensing lens and leaded light spare. The light guide member has a hollow light guide structure, and defines an incident light side and an emergent light side away from the incident light side, and the light emitting module and the condensing lens are respectively disposed on the incident light side and the emergent light side. When the light guide piece with the hollow light guide structure is adopted, compared with a solid transparent plastic or silica gel light guide piece, the phenomenon that the light guide piece is heated, aged or deformed can be avoided, and the service life is prolonged.

Description

Lighting device for vehicle

Technical Field

The present application relates to a lighting device for a vehicle, and more particularly to a miniaturized lighting device for a vehicle capable of satisfying an illumination requirement.

Background

According to the requirements of laws and regulations, a high beam light, a low beam light and a direction light must be arranged on the front side of the vehicle, daytime running lights are increasingly popularized, the positions of the front surface of the vehicle body for mounting the vehicle lights are less and less along with the diversified changes of the vehicle body shape, and the light emitting area of the vehicle lights is smaller and less; even so, the lamp still needs to meet the brightness, light shape and illumination angle of the regulation to ensure the safety of driving.

Disclosure of Invention

In view of the above, the present disclosure provides a lighting device for a vehicle, which is applied to provide a narrow and long light type, but can still satisfy the required light type and illumination.

In view of the above, an illumination device for a vehicle is provided, which includes a light emitting module, a condensing lens, and a light guide. The light guide member is hollow and columnar, and defines an incident light side and an emergent light side far away from the incident light side, and the light emitting module and the condensing lens are respectively arranged on the incident light side and the emergent light side.

In addition, the light guide member may be formed of at least two cases, and the adjacent surfaces of the cases have a plurality of sidewalls, which cooperate with each other to form a light guide structure.

Adopt cavity light-directing structure to provide the leaded light effect of light-emitting component, the light type boundary that can define the light-emitting side through the profile of casing lateral wall produces suitable light shape, in addition, compares in adopting solid transparent plastic or silica gel light-directing component, adopts cavity light-directing structure can also avoid the phenomenon that the subassembly is heated ageing. Further, also can set up solid leaded light post in cavity light-directing structure, except satisfying the mixed light demand, cavity light-directing structure also can provide the supporting role, makes the leaded light post not receive thermal deformation.

The vehicle lighting device can be set to be a modular structure, and the light-emitting module only comprises one light-emitting piece and corresponds to the light guide structures and the condensing lenses with the same quantity. The light emitting module can also be a main light emitting piece to form a central light source, and the secondary light emitting pieces on two sides of the central light source are matched to perform light supplement to generate a long and narrow light type to meet the illumination intensity, and meanwhile, the size of the vehicle lighting device can be reduced. In addition, the light-emitting pieces can be electrically connected with a control module, and the intensity of the light supplement is adjusted by the control module.

Further details regarding other functions and embodiments of the present application are described below with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an external view of a vehicular illumination device of a low beam lamp;

FIG. 2 is an exploded view of the assembly of FIG. 1;

FIG. 3 is a cross-sectional view of the hollow light pipe of FIG. 1;

fig. 4 is an external view schematically showing another embodiment of the vehicular illumination device of the low beam lamp;

FIG. 5 is an exploded view of the assembly of FIG. 4;

FIG. 6 is a cross-sectional view of the hollow light pipe of FIG. 4;

FIG. 7 is a longitudinal cross-sectional view of the hollow light guide pillar of FIG. 4.

Description of the symbols

10: light guide 11: upper shell

12: lower housings 13, 14: clamping platform

111. 112,113,121,122, 123: side wall

15: the bearing seat 20: condensing lens

30: the light emitting module 31: mounting seat

330. 331,332, 333: the light emitting member 40: heat radiation fin

Detailed Description

In order to specifically describe the embodiments and achieve the effects of the present application, an embodiment is provided and described below with reference to the drawings.

Referring to fig. 1 to 3, a vehicular lighting device of a low beam is shown, in which a condenser lens 20, a carrying seat 15, a light guide member 10, a light emitting module 30, and heat dissipation fins 40 are sequentially disposed from front to back. The light guide 10 has a hollow cylindrical inner sidewall provided with a reflective coating, the carrier 15 is integrally formed with the light guide 10, and defines the mounting positions of the condenser lens 20 and the light emitting module 30, and the heat dissipation fins 40 are perpendicular to the optical axis of the light emitting module 30.

In the embodiment, the light emitting module 30 has a mounting seat 31 for positioning a light emitting element 330 to provide enough light source, the light guiding element 10 is in a hollow column shape and defines a light incident side and a light emitting side far from the light incident side, the light emitting module 30 is disposed at the light emitting side, and the condensing lens 20 is fixed to the supporting seat 15 by ultrasonic melting and is close to the light emitting side. In addition, the light incident side has a profile smaller than that of the light exiting side, and defines the total input light amount and the light pattern boundary of the light emitting element 330, respectively, and the condensing lens 20 is used for modifying and concentrating the output light pattern to obtain a better uniform optical activity.

The light emitting module 30, the light guide member 10, and the light emitting module 30 form a modular structure, so that the lighting device can be miniaturized and applied to light supplement or other lighting purposes.

Referring to fig. 4 to 7, the lighting device for vehicle shown in the embodiment is different from the previous embodiment in that the light emitting module 30 includes a primary light emitting element 332 and two secondary light emitting elements 331,333 disposed at two opposite sides of the primary light emitting element 332, and three light emitting elements 331,332,333 disposed on the mounting base 31, which are separated from each other and disposed in the same line, so that the light emitting module 30 forms a long and narrow module with a width of about 2 cm. The number of the condensing lenses 20 corresponds to the number of the light emitting members, and the lens modules are arranged side by side, and the positions of the lenses correspond to the positions of the light emitting sides.

In addition, in the embodiment, the light guide member 10 is composed of an upper housing 11 and a lower housing 12, the surface of the joint of the upper housing 11 and the lower housing 12 has a plurality of convex or concave side walls 111,112,113,121,122,123, when the two housings are combined, the corresponding side walls (111 and 121, 112 and 122, 113 and 123) form hollow columns, the number and the position of the hollow columns correspond to the number and the position of the light emitting members, and the side walls 111,112,113,121,122,123 are provided with metal reflective coatings to form a hollow light guide structure and define a light incident side and a light emergent side. The light emitting members 331,332,333 and the light condensing arc surface of the corresponding condensing lens 20 are aligned to the light incident side and the light emitting side of the hollow light guiding structure, respectively, so that the light source is guided to be positioned at the light emitting side, and the light pattern is concentrated and modified through the lens.

Through forming central light source with a main illuminating part to and the secondary illuminating part of its both sides carries out the light filling, can produce long and narrow light type, except satisfying the illuminance, can also dwindle automobile-used lighting device's volume. Adopt cavity light guide structure to the light that illuminating part emitted to guide, except increasing equal optical activity, the light type boundary of light-emitting side can also be defined through the profile of casing lateral wall produces suitable light shape, compares in adopting solid transparent plastic or silica gel light guide, adopts cavity light guide structure can also avoid the phenomenon that the subassembly is heated ageing.

Referring to fig. 6 and 7, in the present embodiment, the hollow light guiding structure forms a closed cylindrical contour in front of the light emitting module 30, and the surfaces of the upper and

lower housings

11 and 12 can be divided into a contact surface and a sidewall surface constituting the hollow light guiding structure. Therefore, the reflective coating can be at least positioned on the surface of the side wall forming the hollow light guide structure; however, the reflective coatings may also completely cover the adjacent surfaces of the upper and

lower cases

11, 12. In addition, the contact surfaces of the upper and

lower housings

11,12 and the side walls of the hollow light guide structure share the same boundary line in the front-rear direction, so as to prevent light leakage from the side, and the housings can be made of a heat conductive material so as to prevent overheating of the module.

In the present embodiment, the upper and

lower housings

11,12 further extend toward the light-emitting direction to form two

holding platforms

13, 14, respectively, as positioning and holding members for the condensing lens 20, so as to reduce the number of components and assembly steps.

In the present embodiment, the primary light emitting element 332 is a 2-crystal LED, which has a stepped profile corresponding to the hollow light guiding pillar, and generates a central light source with a high right and a low left when the light source projects; the secondary

light emitting elements

331 and 333 are 3-crystal LEDs, and have different lengths corresponding to the light pattern boundaries, so as to meet the light supplement requirement of the two side irradiation ranges of the primary light emitting element 332. However, the light emitting elements 331,332, and 333 can also be electrically connected to a control module to adjust the intensity of the

light emitting elements

331 and 333 for light supplement.

It is supplementary here that this leaded light spare 10 inside also can set up solid leaded light post, provides the mixed light effect, and cavity light guide structure also can provide the supporting role, makes the leaded light post not receive thermal deformation.

The above-described embodiments and/or implementations are only illustrative of the preferred embodiments and/or implementations for implementing the technology of the present application, and are not intended to limit the implementations of the technology of the present application in any way, and those skilled in the art can make many changes and modifications without departing from the scope of the technology disclosed in the present application, and still should be considered as the technology or implementations substantially the same as the present application.

Claims

1. An illumination device for a vehicle, comprising:

a light-emitting module including a primary light-emitting member and a secondary light-emitting member disposed on opposite sides of the primary light-emitting member, the primary light-emitting member and the secondary light-emitting member being separated from each other and disposed on a same straight line;

a condenser lens; and

the light guide piece is in a hollow columnar shape and defines a light inlet side and a light outlet side which are far away from the light inlet side, and the light emitting module and the condensing lens are respectively arranged at the light inlet side and the light outlet side;

the light guide part is composed of two shells, the surfaces of the shells comprise a plurality of contact surfaces and a plurality of side wall surfaces forming a plurality of light guide structures,

the light guide structures are arranged at intervals, the contact surfaces of the shells and the side wall surfaces forming the light guide structures share the same boundary line in the front-back direction,

the profile of the sidewall surfaces is convex or concave to define a light pattern boundary of the light-emitting side,

the light guide structure is internally provided with a solid light guide column for providing light mixing effect,

the number of the condensing lenses and the light guide structures corresponds to the number of the light emitting pieces.

2. The vehicular illumination device according to claim 1, wherein a reflective surface is disposed on the housing surfaces to form the light guide structure.

3. The vehicular lighting device according to claim 1, wherein the housings extend in a light emitting direction to form a holder for the condenser lens.

4. The illuminating device for vehicle according to claim 1, wherein the light emitting module is electrically connected to a control module.