TWI705911B - Car light device - Google Patents

Abstract

A vehicle lamp device includes a light emitting lens and several optical systems. The light-emitting lens includes a light-emitting surface protruding forward and capable of emitting light forward. The light exit surface defines an optical central axis extending back and forth, and a first focal zone located on the optical central axis. Each optical system includes a lens unit and a light emitting unit arranged up and down. The light rays projected by each light-emitting unit in the up-down direction travel forward in the light-emitting lens after passing through the lens unit, and the extension line intersects at the first focal zone. Since the lens unit and the light emitting unit of each optical system are arranged up and down, and the light projected in the up and down direction is turned forward through the corresponding lens unit, so the present invention can have the feature of short length in the front and rear directions .

Description

Car light device

The present invention relates to a lighting device, in particular to a vehicle lamp device installed on a vehicle to provide lighting or warning.

Referring to Fig. 1, an existing vehicle lamp device is suitable for projecting light forward, and includes a light-emitting lens 11 and an optical lens 12 connected in front and back, a light-emitting unit 13 located behind the optical lens 12, and a A base unit 14 located behind the light-emitting unit 13 for the light-emitting unit 13 to be installed. The light emitting unit 13 can provide forward light projected to the light exit lens 11 and the optical lens 12, and the light exit lens 11 and the optical lens 12 can project the light provided by the light emitting unit 13 forward.

Since the light-emitting lens 11, the optical lens 12, the light-emitting unit 13 and the base unit 14 are arranged in a row in the vehicle light device, the front and rear length of the vehicle light device is relatively long. Therefore, how to provide a vehicle light device with different spatial types, that is, how to provide a vehicle light device with a shorter front and rear length, so as to provide more choices in the industry, or to optimize the configuration relationship between the vehicle light device and other components , Is a technical problem that needs to be resolved.

The object of the present invention is to provide a vehicle lamp device that can overcome at least one of the disadvantages of the prior art.

The vehicle lamp device includes a light-emitting lens and several optical systems.

The light-emitting lens can project light substantially forward along a first direction, and includes a light-emitting surface substantially protruding forward along the first direction. The light exit surface defines an optical central axis extending back and forth along the first direction, and a first focal zone located on the optical central axis. Define a second direction that crosses the first direction. Each optical system includes a lens unit and a light emitting unit arranged along the second direction. After the light projected by each light-emitting unit along the second direction passes through the lens unit, it substantially travels in the light-emitting lens along the first direction, and the extension line intersects at the first focal zone.

The effect of the vehicle lamp device is: arranging the lens unit and the light emitting unit of each optical system along the second direction, and transmitting the corresponding lens unit to make the light projected by the corresponding light emitting unit along the second direction It can be turned to travel along the first direction and shoot out, thereby reducing the length of the vehicle light device along the first direction, and solving the problem of long length of the conventional vehicle light device in a single direction.

2 to 5, a first embodiment of the vehicle lamp device of the present invention includes a light-emitting lens 2, a plurality of optical systems 3 connected to the light-emitting lens 2, and two arranged on the upper and lower sides of the optical systems 3 Base unit 4. In the following description, the description will be supplemented with a first direction D1, a second direction D2, and a third direction D3 that are perpendicular to each other. Wherein, the first direction D1 is the same direction as the front-rear direction, the second direction D2 is the same direction as the up-down direction, and the third direction D3 is the same direction as the left-right direction.

The light exit lens 2 can project light forward along the first direction D1, and includes a light exit surface 21 protruding forward along the first direction D1. The light emitting surface 21 defines an optical central axis A1 extending back and forth along the first direction D1, and a first focal zone 22 located on the optical central axis A1. The first focal zone 22 includes a first focal point 23 located on the optical central axis A1. The physical meaning of the first focal point 23 and the first focal zone 22 is that the light generated by the point light source located in the first focal point 23 or in the first focal zone 22 will be parallel after being emitted from the light-emitting surface 21 Or substantially parallel to the optical central axis A1.

The two optical systems 3 are grouped together. The optical systems 3 of each group are arranged up and down along the second direction D2, and the optical systems 3 of the group are arranged in a large row along the third direction D3. In other words, in the first embodiment, the optical systems 3 are divided into two small rows up and down, and the number of the optical systems 3 in each small row is three, and they are arranged left and right along the third direction D3 Set up.

Each optical system 3 includes a light emitting unit 31 and a lens unit 32 arranged along the second direction D2.

Each light-emitting unit 31 is disposed on one of the base units 4 and can project light upward or downward along the second direction D2 to the corresponding lens unit 32. In the first embodiment, each light-emitting unit 31 is an LED chip.

4 to 6, each lens unit 32 includes a first lens 33 with an approximately truncated cone shape, and a corresponding light emitting unit 31 located on the upper and lower sides of the first lens 33 along the second direction D2. A second lens 34 on the opposite side.

Each first lens 33 defines a lens central axis A2 extending up and down along the second direction D2, and includes a refractive surface 331 that surrounds the lens central axis A2 and extends toward the corresponding light-emitting unit 31, and a refractive surface that surrounds the refractive surface. 331 and a first reflective surface 332 that shrinks in a direction away from the optical central axis A1 (or the corresponding direction of the light emitting unit 31), and a first reflective surface 332 that surrounds the lens central axis A2 and is located on the first reflective surface 332 and the refracting surface 332. The connecting surface 333 between the surfaces 331.

Each refraction surface 331 can refract the light provided by the corresponding light-emitting unit 31, so that the extension of the light intersects a second focal point 335 in a second focal area 334 (refer to FIGS. 5 and 6). Wherein, each second focal point 335 is located on a corresponding lens central axis A2, and is located on two opposite sides of the corresponding base unit 4 along the second direction D2 with the corresponding lens unit 32.

Each connecting surface 333 can refract the light provided by the corresponding light-emitting unit 31, so that the light is reflected by the corresponding one of the first reflective surfaces 332, and the extension of the light reflected by the first reflective surface 332 The intersection corresponds to the second focal point 335 (refer to FIGS. 5 and 6).

Each second focal point 335 and the first focal point 23 define an imaginary double-leaf hyperboloid 5. Each double-leaf hyperboloid 5 includes a first leaf surface 51 with a concave side facing away from the light-emitting lens 2 and a second leaf surface 52 with a concave side facing the light-emitting lens 2. A first foliar focal point 511 of each first foliar surface 51 is located at the first focal point 23. A second foliar focal point 521 of each second foliar surface 52 is located at the corresponding second focal point 335. Since the drawing space is limited, and Figures 5 and 6 are cross-sectional views, only a line segment can be used to indicate a part of the blade surface after being cut.

Each second lens 34 is integrally connected between the first lens 33 and the light-emitting lens 2 along the second direction D2, and includes an obliquely extending (or in other words) the light-emitting surface 21 in a direction opposite to the first lens 33 The second reflective surface 341 extends obliquely toward the light-emitting surface 21 in the vertical direction. Each second reflective surface 341 is coated with an aluminum film to reflect light, and is a part of the second leaf surface 52 of a corresponding double-leaf hyperboloid 5. The second reflective surfaces 341 of the optical systems 3 of the upper and lower groups substantially cooperate to present a V-shape with an opening opposite to the light-emitting surface 21 (see FIG. 4).

The base units 4 are respectively located on the upper and lower opposite sides of the optical systems 3 along the second direction D2, and are respectively provided for the upper and lower rows of the optical systems 3, and each base unit 4 includes several pieces The heat dissipation fins 41 are arranged at intervals along the third direction D3. Each heat dissipation fin 41 extends in the front and rear longitudinal direction along the first direction D1, and extends obliquely up and down along the second direction D2.

During the operation of the first embodiment, the light projected by each light-emitting unit 31 to the corresponding first lens 33 is refracted by the corresponding refracting surface 331, and the extension line will intersect the first lens in the second focal zone 334. Two focal points 335, and the light rays projected by each light-emitting unit 31 toward the corresponding first lens 33 are refracted by the corresponding connecting surface 333 and reflected by the corresponding first reflecting surface 332, and the extension line will also intersect at the first lens 33. The second focal point 335 in the second focal area 334. That is to say, the light rays projected by each light-emitting unit 31 to the first lens 33 will all intersect the corresponding second focal point 335 after being acted on by the first lens 33.

At this time, since each second focal point 335 is located on a second focal point 521 of the corresponding one of the second leaf surfaces 52, the optical principle of adding the double leaf hyperboloid 5 is determined by one of the second leaf surfaces 52 The light projected by the focal point is reflected by the second leaf surface 52, and the extension line will intersect at the focal point of the corresponding first leaf surface 51 (that is, a corresponding first leaf surface focal point 511) that cooperates to form a group of double leaf hyperboloids 5 ), and since each second reflecting surface 341 is a part of a corresponding second leaf surface 52, the light rays whose extension line meets at the second focal point 335 are reflected by the second reflecting surfaces 341, and the extension line will be Intersect at a corresponding first foliar focal point 511 and meet at the first focal point 23 in the first focal area 22. That is to say, after the light projected by each light-emitting unit 31 to the first lens 33, after the first lens 33 and the second lens 34 act, the extension line will all intersect at the first focal point 23.

Since the first focal point 23 is the focal point of the light-emitting surface 21, the light generated by each light-emitting unit 31 will travel in the light-emitting lens 2 along the first direction D1 after being acted on by the corresponding lens unit 32 , And when leaving from the light-emitting surface 21, they will be substantially parallel to the optical central axis A1 along the first direction D1.

The first feature of this first embodiment is that the light-emitting unit 31 and the lens unit 32 of each optical system 3 are arranged up and down along the second direction D2, which together enables the base units 4 to be transferred and arranged there. Waiting for the upper and lower sides of the optical system 3 to greatly reduce the length of the first embodiment along the first direction D1, and solve the problem that the conventional vehicle light device is in a single direction (in the first embodiment, the first direction D1 ) The problem of longer length. Based on the aforementioned structural features, the base units 4 of the first embodiment are not blocked by the light-emitting lens 2 but can be seen, and can be dispersed into two upper and lower parts, so in addition to improving the heat dissipation effect , Can also bring a sense of technology and avant-garde visual effects.

The second feature of the first embodiment is that although the light-emitting units 31 are arranged separately, since the extended lines of the projected light will eventually meet the first focal point 23 in the first focal zone 22, It can produce the same effect as arranging a plurality of the light-emitting units 31 in the first focal zone 22. However, the distributed design of the light-emitting units 31 described in the first embodiment can not only facilitate the transmission of two In addition to heat dissipation of the base unit 4 to improve the heat dissipation effect, the cost can also be saved by using the light-emitting unit 31 with lower light-emitting power. For example, there are six optical systems 3 in the first embodiment. Compared with the prior art design of using a high-power light-emitting unit 31 to provide light, the first embodiment can use six light-emitting powers as 1/the target power. 6 of the light-emitting unit 31 to provide light. In addition, the light-emitting units 31 can also be light-emitting units 31 that can project light of different colors with each other, thereby generating more possibilities for color changes, or taking into account different lighting or warning purposes.

In other embodiments of the present invention, when the light shape is changed in accordance with regulations or other requirements, the extended line of the light reflected by the second reflecting surfaces 341 can also only intersect in the first focal zone 22. can. Specifically, the extension line of the light rays reversed by the second reflecting surfaces 341 can only intersect near the first focal point 23 but not on the first focal point 23 (but still located in the first focal area). 22) to bring different light shape changes. The first focal zone 22 may be a spherical shape with the first focal point 23 as the center of the sphere and a radius of 3mm, 4mm or 5mm.

In other embodiments of the present invention, the arrangement of the optical systems 3 can also have other changes. For example, the optical systems 3 can also be arranged in a small row along the third direction D3, instead of two small rows up and down. In some limited space, the number of the optical systems 3 can also be only two. , And arranged up and down along the second direction D2, or arranged left and right along the third direction D3, so that the included two second reflecting surfaces 341 are upright with openings opposite to the light emitting surface 21 V-shaped or horizontal V-shaped.

Referring to FIG. 7, a second embodiment of the vehicle lamp device of the present invention is similar to the first embodiment, except that the optical systems 3 are only arranged in a small row along the third direction D3. Specifically, the optical systems 3 of the second embodiment are only arranged in the upper row along the third direction D3. Since the structure of the light-emitting lens 2 and its light-emitting surface 21 of the second embodiment has not changed, it can project a light shape similar to the shape of the first embodiment, only because of the optical system of the second embodiment The number of 3 is one-half of the first embodiment (3/6=), so the projected brightness of the second embodiment is one-half of the first embodiment.

Referring to FIG. 8, a third embodiment of the vehicle lamp device of the present invention is similar to the first embodiment, except that the third embodiment only includes one set of the optical system 3, that is, only two The optical systems 3 are arranged one above the other along the second direction D2. Since the structure of the light-emitting lens 2 and its light-emitting surface 21 of the third embodiment has not changed, it can project a light shape similar to the shape of the first embodiment, only because of the optical system of the third embodiment The number of 3 is one third of the first embodiment (2/6=), so the projected brightness of the third embodiment is one third of the first embodiment.

In summary, the effect of the vehicle lamp device of the present invention is to arrange the lens unit 32 and the light emitting unit of each optical system 3 along the second direction D2, and make the corresponding lens unit 32 pass through the corresponding lens unit 32. The light projected by the light emitting unit 31 along the second direction D2 can be turned to travel along the first direction D1 and be emitted, so that the length of the vehicle light device along the first direction D1 can be reduced.

The above are only examples of the present invention, and cannot be used to limit the scope of patent application of the present invention, and equivalent changes made according to the scope of patent application of the present invention and the contents of the specification should also be the present invention. Covered by the scope of the patent application.

2: Light emitting lens

21: Glossy surface

22: The first focal area

23: The first focus

3: optical system

31: Light-emitting unit

32: lens unit

33: The first lens

331: Refractive Surface

332: first reflective surface

333: Connection surface

334: Second Focal Zone

335: second focus

34: second lens

341: second reflective surface

4: Base unit

41: cooling fins

5: Double leaf hyperboloid

51: The first leaf

511: first leaf focus

52: second leaf surface

521: Second Foliar Focus

A1: Optical axis

A2: lens axis

D1: First direction

D2: second direction

D3: Third party

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a cross-sectional view illustrating an existing vehicle light device; Figure 2 is a perspective view illustrating a first embodiment of the lamp device of the present invention; Fig. 3 is a perspective view illustrating a light-emitting lens, a plurality of first lenses and a plurality of second lenses of the first embodiment from another angle; Figure 4 is a cross-sectional view illustrating the first embodiment; Figure 5 is an incomplete cross-sectional view showing an enlarged view of one of the optical systems located in the center of the upper row; Figure 6 is an incomplete cross-sectional view showing another optical system located in the center of the lower row enlarged; Figure 7 is a perspective view illustrating a second embodiment of the lamp device of the present invention; and Fig. 8 is a perspective view illustrating a third embodiment of a vehicle lamp device of the present invention.

2: Light emitting lens

21: Glossy surface

3: optical system

31: Light-emitting unit

32: lens unit

33: The first lens

331: Refractive Surface

332: first reflective surface

333: Connection surface

34: second lens

341: second reflective surface

4: Base unit

41: cooling fins

A1: Optical axis

A2: lens axis

D1: First direction

D2: second direction

Claims (7)

A vehicle lamp device includes: a light-emitting lens capable of projecting light rays substantially forward in a first direction, and includes a light-emitting surface substantially protruding forward along the first direction, and the light-emitting surface defines a An optical central axis extending back and forth along the first direction, and a first focal zone located on the optical central axis; and a plurality of optical systems defining a second direction transverse to the first direction, and each optical system includes A lens unit and a light-emitting unit are arranged in the second direction. The light projected by each light-emitting unit in the second direction travels through the lens unit and substantially travels in the light-emitting lens along the first direction, and The extension line intersects the first focal zone; wherein, the lens unit of each optical system includes a first lens, and a second lens connected between the first lens and the light-emitting lens along the second direction, each A first lens defines a lens center axis extending along the second direction, and includes a refractive surface surrounding the lens center axis, and a first reflective surface surrounding the refractive surface and shrinking in the direction opposite to the second lens , And a connecting surface that surrounds the central axis of the lens and is located between the first reflecting surface and the refraction surface, the second lens of each optical system includes an obliquely extending light-emitting surface in a direction opposite to the first lens The second reflecting surface, each light emitting unit projects the light rays to the corresponding first lens, is refracted by the corresponding refracting surface, is projected to the corresponding second reflecting surface, and after being reflected by the corresponding second reflecting surface, it is extended The lines intersect at the first focal area, and the light rays projected by each light-emitting unit to the corresponding first lens are refracted by the corresponding connecting surface and passed through the corresponding After the first reflecting surface is reflected and projected to the corresponding second reflecting surface and reflected by the corresponding one of the second reflecting surfaces, the extension line will intersect at the first focal area; wherein, each light emitting unit is projected to the corresponding The first lens and the light refracted by the corresponding refracting surface, the extension line intersects at a second focal area, and each light-emitting unit projects to the corresponding first lens and is refracted by the corresponding connecting surface and passes through the corresponding The extended line of the light reflected by the first reflecting surface intersects the corresponding second focal zone, the first focal zone includes a first focal point located on the optical central axis, and each second focal zone includes a central axis located on the lens Each second focus and the first focus define an imaginary double-leaf hyperboloid. Each double-leaf hyperboloid includes a first leaf surface with a concave side facing away from the light-emitting lens, and a concave side facing For the second leaf surface of the light-emitting lens, a first leaf surface focal point of each first leaf surface is located at the first focal point, and a second leaf surface focal point of each second leaf surface is located at the corresponding second focal point Each second reflecting surface is a part of a corresponding one of the second leaf surfaces. The vehicle lamp device according to claim 1, wherein a third direction crossing the first direction and the second direction is defined, and the optical systems are arranged along the third direction. The vehicle light device according to claim 1, wherein the vehicle light device includes two of the optical systems, and the optical systems are arranged along the second direction. The vehicle lamp device according to claim 3, wherein the second reflecting surfaces of the optical systems substantially cooperate to form a V-shape with an opening opposite to the light emitting surface. The vehicle lamp device according to claim 1, wherein the optical systems are divided into two In one group, the optical systems of each group are arranged along the second direction, defining a third direction crossing the first direction and the second direction, and the optical systems of the array are arranged along the third direction. The vehicle lamp device according to claim 5, wherein the second reflecting surfaces of the optical systems of each group substantially cooperate to form a V-shape with an opening opposite to the light emitting surface. The vehicle light device according to claim 5, wherein the vehicle light device further includes two base units located on opposite sides of the optical systems along the second direction, and each base unit includes a plurality of edges The heat dissipation fins are arranged at intervals in the third direction, and each heat dissipation fin extends along the length of the first direction and extends obliquely along the second direction.

Images