CN216693397U - Lighting lamp - Google Patents
Lighting lamp Download PDFInfo
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- CN216693397U CN216693397U CN202123041609.8U CN202123041609U CN216693397U CN 216693397 U CN216693397 U CN 216693397U CN 202123041609 U CN202123041609 U CN 202123041609U CN 216693397 U CN216693397 U CN 216693397U
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Abstract
The utility model discloses an illuminating lamp, which comprises a first light source group, a second light source group, a third light source group, a shading sheet and a first lens, wherein the first light source group comprises a first LED light source and a first reflecting cup corresponding to the first LED light source; the second light source group comprises a second LED light source and a light path turning piece corresponding to the second LED light source, the light path turning piece at least comprises a first reflecting surface and a second reflecting surface, the light path turning piece comprises a first focus and a second focus, the second LED light source corresponds to the first focus, and a tangent of the shading sheet corresponds to the second focus. According to the characteristic that most of luminous flux output by the second LED light source is above a near-light cut-off line and only a small part of luminous flux output by the second LED light source is below the near-light cut-off line, the second LED light source is turned off by the control switch in a near-light mode so as to avoid light waste and reduce the light efficiency of the system; meanwhile, the third light source group is arranged to supplement light for the near-field illumination, so that the problem of insufficient brightness is solved.
Description
Technical Field
The utility model relates to the technical field of semiconductor lighting, in particular to a lighting lamp.
Background
With the development of semiconductor technology, LED (Light Emitting Diode) Light sources have the advantages of high efficiency, energy saving, environmental protection, low cost, long service life, etc., and are gradually replacing traditional incandescent lamps and energy saving lamps, becoming a general illumination Light source, and particularly being widely applied to high-beam and low-beam integrated automobile headlamps.
In the conventional bifocal lens, in order to improve the central brightness of the high beam, a set of auxiliary high beams, called a third light source, is usually added above the lens, and the third light source includes a low beam LED light source, a high beam LED light source, and a third light source, which may be an LED light source or a laser light source. In a low beam state, the low beam LED light source and the high beam LED light source are simultaneously lightened, and the light distribution requirement of low beam is met through the shading sheet; when the high beam state, the light shielding sheet is opened, and the direct light source is opened simultaneously, and the direct light source is used for assisting high beam illumination in order to strengthen high beam central brightness, but the light that high beam LED light source can supply the passing beam is very limited, because the light of high beam LED light source output is most all sheltered from by the light shielding sheet, leads to system inefficiency.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides the illuminating lamp capable of effectively improving the system efficiency and the use method thereof.
In order to solve the technical problem, the technical scheme of the utility model is that the lighting lamp comprises:
the first light source group comprises a first LED light source and a first reflecting cup corresponding to the first LED light source, and light rays emitted by the first LED light source are emitted after being reflected by the first reflecting cup;
the second light source group comprises a second LED light source and a light path turning piece corresponding to the second LED light source, the light path turning piece at least comprises a first reflecting surface and a second reflecting surface, the light path turning piece comprises a first focus and a second focus, and the second LED light source corresponds to the first focus;
the third light source group is positioned behind the light outlet of the first reflecting cup along the light path, does not shield the light rays emitted by the first light source group and the second light source group, and comprises a third light source;
the tangent line of the shading sheet corresponds to the second focus of the light path turning piece;
a first lens, wherein a part of the first lens corresponding to the third light source group is absent;
after being reflected by the first reflecting surface and the second reflecting surface in sequence, the light rays emitted by the second LED light source are converged to the vicinity of the tangent line of the shading sheet, and more than half of the light rays are positioned below the tangent line of the shading sheet;
the light distribution formed by the light emitted by the third light source is positioned below the short-distance light cut-off line;
the LED lamp also comprises a first control switch and a second control switch, wherein the first control switch is connected with the first LED light source, and the second control switch is connected with the second LED light source.
Furthermore, the light source further comprises a second lens corresponding to the missing position of the first lens, and the light emitted by the third light source is projected onto the second lens to be collimated and then emitted.
Furthermore, the focal point of the first lens corresponds to the tangent position of the light shielding sheet, and the focal point of the second lens corresponds to the position of the third light source.
Further, the first lens and the second lens are integrally formed.
Furthermore, the third light source group further comprises a third light reflecting cup corresponding to the third light source, and light emitted by the third light source is reflected by the third light reflecting cup and then emitted along the designated direction.
Furthermore, the second LED light source also comprises a laser light source, and light emitted by the laser light source is projected onto the fluorescent powder sheet of the LED light source.
Further, the first reflecting surface is an ellipsoid, and the second reflecting surface is a plane reflecting surface.
Furthermore, a light through hole is formed in the ellipsoid, and light emitted by the laser light source penetrates through the light through hole and is projected onto a fluorescent powder sheet of the LED light source.
Furthermore, the second LED light source includes two LED light sources, and each LED light source corresponds to one light path turning member.
The utility model also provides a using method of the lighting lamp, wherein in the low beam mode, the first LED light source and the third light source are turned on, and the second LED light source is turned off; in the high beam mode, the first LED light source, the second LED light source and the third light source are turned on simultaneously.
The utility model provides an illuminating lamp and a using method thereof, wherein the illuminating lamp comprises a first light source group, a second light source group, a third light source group, a light shading sheet and a first lens, wherein the first light source group comprises a first LED light source and a first light reflecting cup corresponding to the first LED light source; the second light source group comprises a second LED light source and a light path turning piece corresponding to the second LED light source, the light path turning piece at least comprises a first reflecting surface and a second reflecting surface, the light path turning piece comprises a first focus and a second focus, the second LED light source corresponds to the first focus, and a tangent line of the shading sheet corresponds to the second focus. According to the characteristic that most of luminous flux output by the second LED light source is above a near-light cut-off line and only a small part of luminous flux output by the second LED light source is below the near-light cut-off line, the second LED light source is turned off through the second control switch in a near-light mode so as to avoid light waste and reduce the luminous efficiency of the system; meanwhile, the light supplement is carried out on the near-light illumination by arranging the third light source group, so that the problem of insufficient brightness is solved, the illumination brightness in far and near light states is met, and the light efficiency of the system is improved.
Drawings
Fig. 1 is a schematic structural diagram of a lighting fixture in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of two optical path turning members in embodiment 1 of the present invention;
fig. 3a, 3b are schematic diagrams of low beam spot and high beam spot in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a lighting fixture in embodiment 2 of the present invention;
fig. 5 is a schematic structural diagram of a lighting fixture in embodiment 3 of the present invention.
Shown in the figure: 10. a first light source group; 110. a first LED light source; 120. a second LED light source; 20. a second light source group; 210. a second LED light source; 211. an LED chip; 212. a phosphor sheet; 220. a light path turning member; 221. a first reflective surface; 222. a second reflective surface; 230. a laser light source; 310. a third light source; 320. a third reflective cup; 40. a shading sheet; 50. a first lens; 60. a second lens; 710. a first control switch; 720. a second control switch.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the present invention provides an illumination lamp, which includes a first light source group 10, a second light source group 20, a third light source group, a light shielding sheet 40 and a first lens 50.
The first light source group 10 includes a first LED light source 110 and a first reflective cup 120 corresponding to the first LED light source 110, and light emitted from the first LED light source 110 is reflected by the first reflective cup 120 and then emitted in a specific direction. The first LED light sources 110 may be provided in a plurality of positions corresponding to the focal point of the first reflective cup 120, and the light emitted from the first LED light sources 110 is reflected by the first reflective cup 120 and then emitted.
The second light source group 20 includes a second LED light source 210 and a light path turning member 220 corresponding to the second LED light source 210, the light path turning member 220 at least includes a first reflecting surface 221 and a second reflecting surface 222, the light path turning member 220 includes a first focus and a second focus, for example, the first reflecting surface 221 may be an ellipsoid or an approximately ellipsoid, the second reflecting surface 222 may be a plane, the second LED light source 210 corresponds to the first focus, and light emitted from the second LED light source 210 is turned by the light path turning member 220 and then converged to the second focus. The light-shielding sheet 40 is located between the second light source group 20 and the first lens 50 along the light path, and a tangent line of the light-shielding sheet 40 corresponds to the second focal point of the light path turning member 220. Specifically, the light emitted from the first LED light source 110 is not blocked by the light shielding sheet 40, and is directly projected to the lower half portion of the first lens 50 for emission, the light emitted from the second LED light source 210 sequentially passes through the first reflecting surface 221 and the second reflecting surface 222 for reflection, and then converges to the vicinity of the tangent of the light shielding sheet 40, and more than half of the light is located below the tangent of the light shielding sheet 40, and then passes through the first lens 50 for emission, i.e. the light distribution formed by the light emitted from the second LED light source 210 is mainly distributed above the low-beam cut-off line, i.e. in the light flux output by the second LED light source 210, more than half of the light is located above the low-beam cut-off line, and less than half of the light is located below the low-beam cut-off line, therefore, in the low-beam mode, the light shielding sheet 40 rotates downward, most of the light output by the second LED light source 210 is shielded by the light shielding sheet 40, if the light is turned on, the light is wasted, and the system light efficiency is low, in this application, through setting up the first control switch 710 of being connected with first LED light source 110 and the second control switch 720 of being connected with second LED light source 210, under the distance light mode, open second LED light source 210 through second control switch 720 and carry out normal illumination, and under the passing light mode, close second LED light source 210 through second control switch 720, avoid light extravagant, improve the light efficiency of system. It should be noted that the first control switch 710 and the second control switch 720 are both connected to the low beam button and the high beam button, and when the low beam button is turned on, the first LED light source 110 is turned on by default, the second LED light source 210 is turned off, and when the high beam button is turned on, the first LED light source 110 and the second LED light source 210 are turned on by default.
In this embodiment, a certain included angle is formed between the light emitting surface of the second LED light source 210 and the light emitting surface of the first LED light source 110, that is, the light emitting surfaces of the second LED light source 210 and the light emitting surface of the first LED light source 110 are not collinear or parallel, preferably, the included angle between the light emitting surface of the second LED light source 210 and the light emitting surface of the first LED light source 110 is 45 to 90 degrees, as shown in fig. 2, the included angle between the light emitting surfaces of the second LED light source 210 and the light emitting surface of the first LED light source 110 is 90 degrees, that is, the light emitting surfaces of the second LED light source and the light emitting surface of the first LED light source are perpendicular to each other, and the heat dissipation is performed through separate heat dissipation channels, so that the heat dissipation speed is high, and the efficiency is high.
The third light source set is located behind the first reflective cup 120 along the light path, and does not block the light emitted from the first light source set 10 and the second light source set 20. The third light source group comprises a third light source 310, which third light source 310 may be a laser light source or an LED light source, or a combination of a laser light source and an LED light source. The laser light source may employ a laser diode or a semiconductor laser. In the present embodiment, taking the LED light source as an example, the third light source group is used for supplementing light to the first light source group 10 and/or the second light source group 20, and the light distribution finally formed is mainly distributed below the low-beam cut-off line and is mainly used for assisting the low-beam illumination. Of course, the color of the light emitted from the third light source group may be different from the colors of the first light source group 10 and the second light source group 20, for example, the light emitted from the third light source group may be yellow, so that the light-emitting device can improve the penetrating power of the illumination spots and improve the illumination effect in rainy and foggy days.
The first lens 50 and the third light source group have a defect, that is, the size of the first lens 50 is between the semicircular lens and the circular lens, or the circular lens can be regarded as a cut-off part, and the cut-off part is smaller than half of the lens, and the light emitted from the first light source group 10 and the second light source group 20 are projected onto the first lens 50.
Preferably, the lighting fixture further comprises a second lens 60 corresponding to the missing position of the first lens 50, the focal points of the first lens 50 and the second lens 60 are different, the focal point of the first lens 50 corresponds to the second focal point of the light path turning member 220, and the light rays emitted by the first LED light source 110 and the second LED light source 210 exit after passing through the first lens 50; the third light source 310 is located at the focal point of the second lens 60, and the light emitted from the third light source is collimated by the second lens 60 and then emitted. In order to save cost and facilitate manufacturing and ensure the installation relationship, in the present embodiment, the first lens 50 and the second lens 60 are integrally formed by injection molding.
Preferably, the second LED light source 210 includes two LED light sources, each LED light source corresponds to one light path turning member 220, and the two LED light sources are arranged to improve the high beam illumination brightness. That is, each LED light source is reflected by the corresponding light path turning member 220 and then converged to the vicinity of the tangent line of the light shielding sheet 40, and is collimated by the first lens 50 and then emitted, so that the two light path turning members 220 form a certain included angle, as shown in fig. 2, and the two light path turning members 220 may be integrally formed, so as to facilitate the manufacturing and better ensure the positional relationship, and of course, may be independently installed.
The present invention further provides a method for using the lighting fixture, as described above, that is, in the low beam mode, the first LED light source 110 and the third LED light source 310 are turned on, the second LED light source 210 is turned off, and the formed lighting spots are as shown in fig. 3a, wherein the light field distribution formed by the first LED light source 110 is S1, and the light field distribution formed by the third LED light source 310 is S2; in the high beam mode, the first LED light source 110, the second LED light source 210 and the third light source 310 are turned on simultaneously, and the illumination spots are formed as shown in fig. 3b, wherein the light field distribution formed by the first LED light source 110 is S1, the light field distribution formed by the third light source 310 is S2, and the light field distribution formed by the second LED light source 210 is S3. When the lighting fixture is integrated on a vehicle, the first control switch 710 and the second control switch 720 are both connected with the low beam button and the high beam button, and when the low beam button is turned on, the first LED light source 110 is turned on by default, the second LED light source 210 is turned off, and when the high beam button is turned on, the first LED light source 110 and the second LED light source 210 are turned on by default.
Example 2
As shown in fig. 4, different from embodiment 1, in this embodiment, the third light source set further includes a third light reflecting cup 320 corresponding to the third light source 310, light emitted from the third light source 310 is reflected by the third light reflecting cup 320 and then emitted in a specific direction, and a stripe-shaped light field distribution is formed, and the light distribution is entirely located below the low-beam cut-off line, so as to assist the low-beam illumination. Specifically, in this embodiment, the third reflector 320 also corresponds to the vacant portion of the first lens 50. The light emitted from the third light source 310 can be emitted in parallel along the oblique lower direction after passing through the third reflector 320, and the formed luminous flux is located below the low-beam cut-off line, so that the central illuminance of the low-beam illumination is improved.
Example 3
As shown in fig. 5, different from embodiment 2, in this embodiment, the second light source group 20 further includes a laser light source 230, and light emitted from the laser light source 230 is projected onto the phosphor sheet of the second LED light source 210. The first reflecting surface 221 is an ellipsoid or an approximate ellipsoid, and the second reflecting surface 222 is a plane reflecting surface. The light through hole is located on the ellipsoid, the second LED light source 210 includes an LED chip 211 and a phosphor sheet 212 corresponding to the LED chip 211, light emitted from the laser light source 230 passes through the light through hole and is then projected onto the phosphor sheet 212 of the second LED light source 210, when there are two second LED light sources 210, only one laser light source 230 may be projected onto one of the second LED light sources 210, of course, there may be two laser light sources 230, which correspond to the second LED light sources 210 one-to-one, and the emitted light is projected onto the corresponding second LED light sources 210.
Although the embodiments of the present invention have been described in the specification, these embodiments are merely provided as a hint, and should not limit the scope of the present invention. Various omissions, substitutions, and changes may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model.
Claims (9)
1. A lighting fixture, comprising:
the first light source group comprises a first LED light source and a first reflecting cup corresponding to the first LED light source, and light rays emitted by the first LED light source are emitted after being reflected by the first reflecting cup;
the second light source group comprises a second LED light source and a light path turning piece corresponding to the second LED light source, the light path turning piece at least comprises a first reflecting surface and a second reflecting surface, the light path turning piece comprises a first focus and a second focus, and the second LED light source corresponds to the first focus;
the third light source group is positioned behind the light outlet of the first reflecting cup along the light path, does not shield the light rays emitted by the first light source group and the second light source group, and comprises a third light source;
a tangent line of the shading sheet corresponds to the second focus of the light path turning piece;
a first lens, wherein a part of the first lens corresponding to the third light source group is absent;
after being reflected by the first reflecting surface and the second reflecting surface in sequence, the light rays emitted by the second LED light source are converged near the tangent line of the shading sheet, and more than half of the light rays are positioned below the tangent line of the shading sheet;
the light distribution formed by the light emitted by the third light source is positioned below the short-distance light cut-off line;
the LED lamp also comprises a first control switch and a second control switch, wherein the first control switch is connected with the first LED light source, and the second control switch is connected with the second LED light source.
2. The lighting fixture of claim 1, further comprising a second lens corresponding to the missing position of the first lens, wherein the light emitted from the third light source is projected onto the second lens and collimated and then emitted.
3. The lighting fixture as claimed in claim 2, wherein the first lens has a focal point corresponding to a tangential position of the light shield, and the second lens has a focal point corresponding to a position of the third light source.
4. The light fixture of claim 2, wherein the first and second lenses are integrally formed.
5. The illumination lamp as claimed in claim 1, wherein the third light source group further comprises a third reflective cup corresponding to the third light source, and the light emitted from the third light source is reflected by the third reflective cup and then emitted in a specific direction.
6. The lighting fixture of claim 1, wherein the second LED light source further comprises a laser light source, and wherein light emitted from the laser light source is projected onto a phosphor patch of the LED light source.
7. The light fixture of claim 6, wherein the first reflective surface is ellipsoidal and the second reflective surface is planar.
8. The lighting fixture of claim 7, wherein the ellipsoid surface is provided with a light hole, and light emitted from the laser light source is projected onto a phosphor sheet of the LED light source after passing through the light hole.
9. The lighting fixture of claim 1, wherein the second LED light source comprises two LED light sources, each LED light source corresponding to one light path-turning element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123041609.8U CN216693397U (en) | 2021-12-03 | 2021-12-03 | Lighting lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123041609.8U CN216693397U (en) | 2021-12-03 | 2021-12-03 | Lighting lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216693397U true CN216693397U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123041609.8U Active CN216693397U (en) | 2021-12-03 | 2021-12-03 | Lighting lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216693397U (en) |
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2021
- 2021-12-03 CN CN202123041609.8U patent/CN216693397U/en active Active
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