Disclosure of Invention
The object of the present invention is to ameliorate at least one of the disadvantages of the prior art.
The invention discloses a car lamp device, which comprises an optical lens and a light emitting unit, wherein the optical lens comprises a first light emitting lens part and a first light entering lens part which are connected in a front-back manner, the first light emitting lens part comprises a first light emitting surface which is positioned at the front end and faces forward, the light emitting unit comprises a first light emitting module which can project a plurality of first light rays to the first light entering lens part, the first light rays enter the first light entering lens part, then travel towards the first light emitting lens part and are emitted from the first light emitting surface, the optical lens also comprises a second light entering lens part and a second light emitting lens part which are connected to the upper end and the lower end of the first light emitting lens part, the second light emitting lens part comprises a second light emitting surface which is connected with one end of the upper end and the lower end of the first light emitting surface and faces forward, and an inclined reflecting surface which extends backwards from one end of the second light emitting surface opposite to the first light emitting surface, the light emitting unit further comprises a second light emitting lens part which can project the second light rays to the second light entering from the second light emitting lens part, and the second light emitting lens part and the second light rays are reflected from the second light emitting lens part.
In the vehicle lamp device of the present invention, the inclined reflecting surface includes a plurality of reflecting surface portions, and the reflecting surface portions are divided into a plurality of groups arranged in a left-right direction, and the reflecting surface portions of each group are arranged up and down.
In the car light device, the second light emitting surface vertically extends to the front of the ground, and an included angle of 40-50 degrees is defined between the second light emitting surface and the inclined reflecting surface.
The first light emergent surface protrudes forwards from back to front and defines a first focus, the first light incident lens part comprises a first end, a first light collecting space concavely extending forwards from the first end is formed in the first light collecting space for the first light to enter, the first light incident lens part further comprises a first main light incident surface positioned in front of the first light collecting space, a first side light incident surface surrounding the first main light incident surface and matched with the first main light incident surface to define the first light collecting space, and a first reflecting surface extending forwards from the first end and connected with the first light emergent lens part and surrounding the first light collecting space.
In the vehicle lamp device, the first light incident through the first main light incident surface is intersected at the first focus, and the extension lines of the first light incident through the first side light incident surface are intersected to form a plurality of first virtual foci, wherein each first virtual foci and each first focus are two foci of two hyperbolas.
In the vehicle lamp device of the invention, the first reflecting surface comprises two first surface sections which are vertically spaced and extend forwards from the first end, two second surface sections which are horizontally spaced and extend forwards from the first end, and a plurality of third surface sections which extend forwards from the first end and are positioned between the first surface sections and the second surface sections, wherein each third surface section is discontinuous with the adjacent first surface sections and second surface sections.
The second light-in lens part comprises a second end, a second light-collecting space concavely extending from the second end to the direction of the first light-out lens part, a second main light-in surface positioned between the second light-collecting space and the first light-out lens part, a second side light-in surface surrounding the second main light-in surface and matched with the second main light-in surface to define the second light-collecting space, and a second reflecting surface extending from the second end to be connected with the first light-out lens part and surrounding the second light-collecting space.
In the vehicle lamp device of the present invention, the second light incident through the second main light incident surface travels toward the inclined reflecting surface along a projection direction intersecting the front-rear direction, and the light incident through the second side light incident surface and reflected by the second reflecting surface travels toward the inclined reflecting surface along the projection direction.
In the vehicle lamp device, the second main light incident surface defines a second focus, the second light emitting module is located at the second focus, the second reflecting surface is formed by one section of a parabolic line around a second optical axis, a plurality of parabolic focuses are defined, and the extension lines of the light rays incident through the second side light incident surface meet at the parabolic focuses.
In the vehicle lamp device of the present invention, the first light does not enter the second light-emitting lens portion, and is not emitted from the second light-emitting surface, and the second light is not emitted from the first light-emitting surface.
The invention has the advantages that the first light emitting module and the second light emitting module can emit the first light ray and the second light ray, and the first light ray and the second light ray can finally be emitted forwards through the first light emitting surface and the second light emitting surface which face forwards to be observed by passers-by, so that the invention has the characteristics of emitting different first light rays and second light rays and having two of a plurality of car lamp functions such as far and near lamps/direction lamps/running lamps.
Detailed Description
Referring to fig. 3, 4 and 5, an embodiment of the lamp device of the present invention comprises a lamp housing 21 (see fig. 3), a heat sink 22 assembled on the lamp housing 21, a first circuit board 23 mounted on the heat sink 22, a second circuit board 24 having a normal vector perpendicular to a normal vector of the first circuit board 23, a light emitting unit 3 mounted on the first circuit board 23 and the second circuit board 24, and an optical lens 4 mounted on the heat sink 22 and the first circuit board 23.
The lamp housing 21 has a substantially rectangular annular shape. The heat sink 22 is a fin type heat sink. The first circuit board 23 extends vertically and faces forward and backward. The second circuit board 24 extends horizontally and laterally and faces upward and downward.
Referring to fig. 4,5 and 6, the light emitting unit 3 includes five first light emitting modules 31 disposed at the front end of the first circuit board 23, and seven second light emitting modules 32 disposed at the bottom end of the second circuit board 24. Since the first light emitting modules 31 are identical to each other and the second light emitting modules 32 are identical to each other, in the following description, each of the first light emitting modules 31 and the second light emitting modules 32 will be described as a representative.
The first light emitting module 31 and the second light emitting module 32 can respectively project a plurality of first light rays L11 (see fig. 8) and a plurality of second light rays L12 (see fig. 9) toward the optical lens 4. The first light emitting module 31 and the second light emitting module 32 emit light by using LED chips. As for the traveling modes of the first light beam L11 and the second light beam L12 generated by the first light emitting module 31 and the second light emitting module 32, respectively, a complete description of the optical lens 4 will be left.
The optical lens 4 includes five first light-emitting lens portions 41 integrally connected to each other, a plurality of first light-entering lens portions 42 corresponding to the number of the first light-emitting lens portions 41 and integrally connected to the rear end of the first light-emitting lens portions 41, seven second light-entering lens portions 43 connected to the top end of the first light-emitting lens portions 41, and a plurality of second light-emitting lens portions 44 corresponding to the number of the second light-entering lens portions 43 and connected to the bottom end of the first light-emitting lens portions 41.
Since the first light-emitting lens portions 41 are identical to each other, the first light-entering lens portions 42 are identical to each other, the second light-entering lens portions 43 are identical to each other, and the second light-emitting lens portions 44 are identical to each other, in the following description, one of the first light-emitting lens portions 41, one of the first light-entering lens portions 42, one of the second light-entering lens portions 43, and one of the second light-emitting lens portions 44 will be mainly represented. Fig. 6, 8, and 9 are cross-sectional views through the third first light entrance lens portion 42 and the fourth second light entrance lens portion 43, since the third first light entrance lens portion 42 is aligned with the fourth second light entrance lens portion 43.
The first light-emitting lens portion 41 includes a first light-emitting surface 411 located at a front end and facing forward. The first light emitting surface 411 protrudes from the back to the front, and defines a first focal point F11 (see fig. 8) located behind the first light emitting module 31.
The number of the first light incident lens portions 42 of the optical lens 4 corresponds to the number of the first light emitting modules 31 of the light emitting unit 3. Continuing to refer to one of the first light-incident lens portions 42, referring to fig. 6, the first light-incident lens portion 42 includes a first end 421 located at the rearmost position, and a first light-collecting space S1 is formed from the first end 421. The first light collecting space S1 is used for the first light L11 (see fig. 8) generated by the first light emitting module 31 to enter the first light incident lens 42.
The first light-incident lens portion 42 further includes a first light-incident main surface 422 located in front of the first light-collecting space S1, a first light-incident side surface 423 surrounding the first light-incident main surface 422 and cooperating with the first light-incident main surface 422 to define the first light-collecting space S1, and a first reflecting surface 424 extending from the first end 421 forward to connect the first light-emergent lens portion 41 and surrounding the first light-collecting space S1.
The first main light incident surface 422 is convex from front to back. The first side light incident surface 423 is annular. The first reflecting surface 424 expands outwardly from back to front. The first reflecting surface 424 is formed by a part of a line segment of one of two hyperbolas, and is formed by one circle around a first optical axis a11 (see fig. 6), and defines a plurality of first virtual foci V11 (see fig. 8, and only two of the first virtual foci V11 on the cross section are indicated because fig. 8 is a cross section).
Referring to fig. 5, 6 and 7, each of the first reflecting surfaces 424 includes two first surface segments 424a spaced apart from each other and extending forward from the first end 421, two second surface segments 424b spaced apart from each other and extending forward from the first end 421, and a plurality of third surface segments 424c extending forward from the first end 421 and located between the first surface segments 424a and the second surface segments 424 b. Each third segment 424c is discontinuous with the adjacent first segment 424a and second segment 424 b.
Referring to fig. 4, 5 and 6, the number of the second light incident lens parts 43 of the optical lens 4 corresponds to the number of the second light emitting modules 32 of the light emitting unit 3. Continuing to describe the second light-incident lens portion 43, referring to fig. 6, the second light-incident lens portion 43 includes a second end 431 located at the uppermost position, and a second light-collecting space S2 is formed to extend downward from the second end 431 toward the first light-exiting lens portion 41. The second light collecting space S2 is used for the second light L12 (see fig. 9) generated by the second light emitting module 32 to enter the second light incident lens 43.
The second light-incident lens portion 43 further includes a second light-incident surface 432 located between the upper and lower sides of the second light-collecting space S2 and the first light-emitting lens portion 41, a second light-incident surface 433 surrounding the second light-incident surface 432 and cooperating with the second light-incident surface 432 to define the second light-collecting space S2, and a second reflecting surface 434 extending from the second end 431 to connect the first light-emitting lens portion 41 and surrounding the second light-collecting space S2.
Referring to fig. 6 and 9, the second main incident surface 432 protrudes from bottom to top, and defines a second focal point F12. The second focal point F12 is located overlapping the second light emitting module 32, or the second light emitting module 32 is located on the second focal point F12.
The second reflecting surface 434 is formed by a segment of a parabolic line extending from top to bottom around a second optical axis a 12. The second reflecting surface 434 defines a plurality of parabolic focal points F21 arranged around a circle (only two of the parabolic focal points F21 are shown on the cross-section since fig. 9 is a cross-section).
The second light-emitting lens portion 44 includes a second light-emitting surface 441 with a top end connected to the bottom end of the first light-emitting surface 411 and facing forward, and an inclined reflecting surface 442 extending obliquely upward from the bottom end of the second light-emitting surface 441.
The second light-emitting surface 441 extends downward and vertically from the first light-emitting surface 411 and faces forward, and the second light-emitting surface 441 and the inclined reflecting surface 442 define an included angle a21 of 45 degrees. In other embodiments of the present invention, the included angle a21 may also be x degrees, where x is between 40 and 50, and may be an integer between 40 and 50.
The inclined reflecting surface 442 includes a plurality of reflecting surface portions 443 (see fig. 5). The reflecting surface 443 is divided into a plurality of groups arranged in a left-right direction. The reflective faces 443 of each group are arranged up and down. Each of the reflecting surface portions 443 is a portion of a cylindrical surface, but it is difficult to present in the drawings because the radius of curvature of the corresponding cylindrical surface is relatively large, so that the curvature of each reflecting surface portion 443 is relatively small. Wherein, the axial direction of each cylindrical surface is the same as the oblique extending direction of the oblique reflecting surface 442.
Referring to fig. 6, 8 and 9, the traveling modes of the first light L11 and the second light L12 will be described. The trace of light in air is shown by a solid line, the trace of light in the lens is shown by a dotted line, and the extension line after refraction/reflection of light is shown by a dot-dash line.
A part of the first light L11 generated by the first light emitting module 31 is incident on the first light incident lens portion 42 through the first main light incident surface 422 as shown in fig. 8. The extended line of the first light L11 incident through the first main light incident surface 422 intersects the first focal point F11. That is, the portion of the first light L11 is emitted from the first focal point F11 of the first light-emitting surface 411, so that the portion of the first light L11 is substantially parallel to each other after being emitted from the first light-emitting surface 411.
A further part of the first light L11 generated by the first light emitting module 31 is incident on the first light incident lens 42 through the first light incident surface 423. The extended lines of the first light L11 incident through the first side light incident surface 423 intersect to form a plurality of first virtual foci V11. Each of the first virtual focus V11 and the first focus F11 is a hyperbolic two-focus. Since the hyperbola has an optical characteristic that the extended line intersects at the focal point of the other curve after the light emitted from one focal point is reflected by the corresponding curve, the extended line intersects at the first focal point F11 after the light L11 of the part is reflected by the first reflecting surface 424. That is, the portion of the first light L11 is refracted by the first light incident surface 423 and reflected by the first reflecting surface 424, and is also emitted from the first focal point F11, so that the portion of the first light L11 is substantially parallel to each other after being emitted from the first light emitting surface 411.
A part of the second light L12 generated by the second light emitting module 32 is incident into the second light incident lens portion 43 through the second main light incident surface 432. The second light L12 incident through the second light incident surface 432 travels toward the inclined reflecting surface 442 along a projection direction D11 intersecting the front-rear direction. Since the second light emitting module 32 is located at the second focal point F12 of the second light incident main surface 432, a portion of the second light L12 is incident from the second light incident main surface 432 and then is projected downward toward the inclined reflecting surface 442 substantially parallel to each other. That is, in the present embodiment, the projection direction D11 is an up-down direction, specifically, an up-down direction perpendicular to the front-rear direction. Finally, the part of the second light L12 is reflected by the inclined reflecting surface 442 and then emitted forward from the second light emitting surface 441.
A further part of the second light L12 generated by the second light emitting module 32 is incident on the second light incident lens portion 43 through the second side light incident surface 433. The extended line of the light incident through the second light incident surface 433 intersects with the parabolic focus F21. That is, after being refracted by the second light incident surface 433, a portion of the second light L12 is reflected by the second reflecting surface 434, and then is projected downward toward the inclined reflecting surface 442 along the projection direction D11, and finally is reflected by the inclined reflecting surface 442, and is emitted forward by the second light emergent surface 441.
In summary, the first light L11 enters the first light-in lens 42, then travels forward toward the first light-out lens 41, and is emitted forward from the first light-out surface 411, the second light L12 enters the second light-in lens 43, then travels straight downward through the first light-out lens 41 toward the second light-out lens 44, is reflected forward by the inclined reflecting surface 442, and is emitted forward from the second light-out surface 441, the first light L11 does not enter the second light-out lens 44, nor is the second light L12 emitted from the second light-out surface 441, and the second light L12 is not emitted from the first light-out surface 411.
The present embodiment is characterized in that the first light L11 and the second light L12 generated by the first light emitting module 31 and the second light emitting module 32 in different directions can be respectively emitted from the first light emitting surface 411 and the second light emitting surface 441 and can be observed by passers-by, so that the first light emitting module 31 and the second light emitting module 32 can be respectively used for providing light rays with different lamp functions, for example, the first light L11 can be used as light rays of a main lamp, and the second light L12 can be used as light rays of a running lamp or a direction lamp, so that the present embodiment has at least two different lamp functions.
Further, since the present embodiment actually includes the plurality of first light emitting modules 31, the plurality of first light incident lens portions 42, and the plurality of first light emergent lens portions 41, a portion of the first light L11 can be designed to generate light as far light, and another portion of the first light L11 can be designed to generate light as near light. Similarly, since the present embodiment actually includes the plurality of second light emitting modules 32, the plurality of second light incident lens portions 43, and the plurality of second light emergent lens portions 44, a portion of the second light L12 can be designed to generate light as a driving light, and another portion of the second light L12 can be designed to generate light as a direction light. Therefore, the embodiment can even have more than four different lamp functions. The inclined reflecting surfaces 442 each include a plurality of reflecting surfaces 443, which are advantageous in that they can diverge light rays when reflected, so that the second light rays L12 diverge to meet the requirements of regulations.
In summary, the lamp device of the present invention has the advantages that the first light emitting module 31 and the second light emitting module 32 can emit the first light L11 and the second light L12, and the first light L11 and the second light L12 can be finally emitted forward through the first light emitting surface 411 and the second light emitting surface 441 which face forward and are different in position and observed by passers-by, so that the lamp device of the present invention has the characteristics of having at least two of the functions of a plurality of lamps such as a far lamp, a near lamp, a direction lamp, a driving lamp and the like by utilizing the first light L11 and the second light L12.
The above description is only for the specific embodiments of the present invention, and the scope of the claims of the present invention should not be limited thereto, and the equivalents of the claims and descriptions of the present invention should be covered by the scope of the claims of the present invention.