CN202032397U - High-power LED suitable for road lighting - Google Patents
High-power LED suitable for road lighting Download PDFInfo
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- CN202032397U CN202032397U CN2011200698547U CN201120069854U CN202032397U CN 202032397 U CN202032397 U CN 202032397U CN 2011200698547 U CN2011200698547 U CN 2011200698547U CN 201120069854 U CN201120069854 U CN 201120069854U CN 202032397 U CN202032397 U CN 202032397U
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- led
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- lens
- road lighting
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Abstract
The utility model discloses a high-power LED suitable for road lighting, and belongs to LED technology. The conventional encapsulated LED needs secondary optical treatment, thereby lowering the lamp efficiency. The high-power LED includes a heat conducting bracket, an LED chip and a reflective cup which are arranged on the heat conducting bracket, as well as a light-transmitting dielectric layer which is arranged on an luminous optical path of the LED chip, wherein the light-transmitting dielectric layer comprises a lens, a light guide layer and an optical conversion material layer; the optical conversion material layer is positioned between the light guide layer and the lens; and the top surface of the lens includes a smooth curved surface. Light emitted by the LED chip is reflected by the reflective cup and refracted by the light-transmitting dielectric layer, and the light intensity distribution curve of the light emitted by the LED meets the light cutoff distribution with the full consideration of exterior quantum efficiency; the LED has high light utilization ratio and improved light efficiency, and brings conveniences for manufacturers of street lamps or tunnel lamps; secondary optical design is not needed for the lamp; and the assembly of the lamp is convenient at the same time.
Description
Technical field
The utility model belongs to the LED technology, specifically is, particularly a kind of great power LED that is applicable to road lighting.
Background technology
At present, in the technology of great power LED product encapsulation, in order to improve external quantum efficiency, adopt following dual mode: (1) selects combining of the lower silica gel of higher silica gel of refractive index and refractive index for use, by the gradual change raising light emission rate of medium refraction index; (2) the outermost layer medium designs becomes convex lens, reduces the probability of total reflection, improves light extraction efficiency.By the combination of above-mentioned dual mode or dual mode, can reach the purpose that improves external quantum efficiency.Select the producer of aforesaid way encapsulated LED design street lamp or Tunnel Lamp for use, need carry out secondary optics to light fixture and handle, processing mode has two kinds: (1) configuration reflector; (2) configuration lens.No matter adopt which kind of mode to carry out secondary optics and handle, Luminaire efficiency all can reduce.
Summary of the invention
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome that existing encapsulated LED need carry out that secondary optics is handled and the defective that causes Luminaire efficiency to reduce provides a kind of great power LED that is applicable to road lighting.
For this reason, the great power LED that is applicable to road lighting of the present utility model, it is characterized in that: it comprises the heat conduction support, be located at the led chip on the heat conduction support and be located at light transmission medium layer on the luminous light path of led chip, described light transmission medium layer comprises lens at least, and the end face of these lens comprises level and smooth curved surface.
As the optimization technique means, the baseplane of described lens is made up of the cocoon shape face.
As the optimization technique means, described light transmission medium layer also comprises optical waveguide layer and the light-converting material layer of being located between described lens and the led chip, and described optical waveguide layer is between described light-converting material layer and lens.
As the optimization technique means, described heat conduction support is provided with reflector, and described reflector has LED installed surface and light reflecting slant, and described led chip is located on the described LED installed surface.Further: the angle between described LED installed surface and the light reflecting slant is 10 °-90 °.The periphery of described reflector is provided with the circuit board working of plastics that cooperates with the bottom surface of described lens, forms an airtight cavity between described lens and the reflector, fills optical waveguide layer and light-converting material layer in this airtight cavity.Described circuit board working of plastics is provided with electrical connector, and the end that this electrical connector is positioned at described circuit board working of plastics is electrically connected with the electrode of described led chip.Be provided with at least two led chips in the described reflector, these led chips pass through series connection or/and parallel connection links to each other with electrical connector.Described reflector is hollowed out to combine with the heat conduction support by described circuit board working of plastics mid portion and forms.
The beneficial effects of the utility model are: the light that led chip sends is by the refraction (light that led chip sends can be reflected to the light transmission medium layer by reflector) of light transmission medium layer (especially by the light transmission medium layer by lens, optical waveguide layer, light-converting material layer three-decker), when fully taking into account the raising external quantum efficiency, make the luminous curve of light distribution of LED satisfy light chopping and distribute.With respect to passing through prior art, the light emitting diode light utilization of the utility model technology made is more abundant, and lamp luminescence efficient also is greatly improved.Make things convenient for street lamp or Tunnel Lamp manufacturer, do not needed light fixture is carried out the secondary optics design, made things convenient for the light fixture assembling simultaneously.
Description of drawings
Fig. 1 is the axonometric drawing that the utility model is applicable to the great power LED of road lighting.
Fig. 2 is the vertical view that the utility model is applicable to the great power LED of road lighting.
Fig. 3 is the rearview of Fig. 2.
Fig. 4 is the left view of Fig. 2.
Fig. 5 is the upward view of Fig. 2.
Fig. 6 is the STRUCTURE DECOMPOSITION schematic diagram of the utility model great power LED of being applicable to road lighting.
Fig. 7 is that the B-B of Fig. 5 is to cutaway view.
Fig. 8 is that the A-A of Fig. 4 is to cutaway view.
Fig. 9 is the axonometric drawing of the related lens of the utility model.
Figure 10 is the vertical view of the related lens of the utility model.
Figure 11 is that the C-C of Figure 10 is to cutaway view.
Figure 12 is that the D-D of Figure 11 is to cutaway view.
Figure 13 is a kind of illumination schematic diagram of the related LED of the utility model.
Figure 14 is lambertian distribution figure of the present utility model.
Figure 15 is the C plane light intensity scatter chart (among this figure, the curve of depicted as solid lines is represented the 0-180 ° of light distribution schematic diagram in C plane, and the curve of dotted lines is represented the 90-270 ° of light distribution schematic diagram in C plane) of the utility model LED.
The number in the figure explanation:
1-heat conduction support;
The 2-LED chip;
3-light transmission medium layer, 31-lens, 32-optical waveguide layer, 33-light-converting material layer;
The 4-reflector;
5-circuit board working of plastics;
The 6-electrical connector.
The specific embodiment
Below in conjunction with Figure of description the utility model is described further.
A kind of great power LED that is applicable to road lighting of the present utility model, shown in Fig. 1-8, it comprises heat conduction support 1, be located at the led chip 2 on the heat conduction support 1 and be located at light transmission medium layer 3 on the led chip 2 luminous light paths, light transmission medium layer 3 comprises that at least a lens 31(is referring to Fig. 9-12, as making with plastics, glass or silica gel), the end face of these lens 31 comprises level and smooth curved surface.
As further improving and replenishing to technique scheme, the utility model also comprises following additional technical characterictic, though Fig. 1-8 has comprised following all additional technical features, it is preferred embodiment of the present utility model, but the utility model is not limited to this situation, according to specifically acting on they is selected for use on the described technical scheme of epimere when implementing the utility model.
At first, the baseplane of lens 31 is made up of the cocoon shape face.
Secondly, light transmission medium layer 3 comprises that also the optical waveguide layer 32(that is located between lens 31 and the led chip 2 is as making with high index of refraction silica gel) and light-converting material layer 33(as making with the higher silica gel of refractive index and the colloid mixture of fluorescent material), optical waveguide layer 32 is between light-converting material layer 33 and lens 31.
The 3rd, heat conduction support 1 is provided with reflector 4, and reflector 4 has LED installed surface and light reflecting slant, and led chip 2 is located on the LED installed surface.Further: the angle between LED installed surface and the light reflecting slant is 10 °-90 °; The periphery of reflector 4 is provided with the circuit board working of plastics 5 that cooperates with the bottom surface of lens 31, form an airtight cavity between lens 31 and the reflector 4, fill optical waveguide layer 32 and light-converting material layer 33 in this airtight cavity, and, circuit board working of plastics 5 is provided with electrical connector 6, the end that this electrical connector 6 is positioned at circuit board working of plastics 5 is electrically connected with the electrode of led chip 2, is provided with at least two led chips in the reflector 4, and these led chips pass through series connection or/and parallel connection links to each other with electrical connector.Reflector 4 can be hollowed out and be combined with heat conduction support 1 and form by circuit board working of plastics 5 mid portions.
The baseplane of lens 31 is the plane of incidence of led chip 2 light, the end face of lens 31 is the exit facet of light, the end face of lens 31 is good with level and smooth irregular surface, and the curve of end face satisfies condition: make the light overwhelming majority that is incident on time face see through lens by refraction.The light that sends from led light source will form a rectangle or oval-shaped illumination range in the far field through behind the lens like this, reach goal of the invention.
Among Figure 13, each bar curve from inside to outside represents that respectively illumination is the curve of 30,28,26,24,22,20,18,16,14,12,10,8,6,4,2 Lux.
From Figure 14,15 as can be seen, light through the irregular surface refraction, 0 ° of-180 ° of direction on the C plane, shooting angle after each bar rays pass through lens is all greater than the shooting angle by light-emitting area, 90 °-270 ° on C plane, the shooting angle after each bar rays pass through lens is all less than the shooting angle by light-emitting area.At the light through the curved surface refraction, major part is all drawn close toward 0 ° of-180 ° of direction in C plane, thereby forms required elliptical irradiated area, reaches the purpose of the light utilization that improves illumination and raising.
Claims (9)
1. great power LED that is applicable to road lighting, it is characterized in that: it comprises heat conduction support (1), be located at the led chip (2) on the heat conduction support (1) and be located at light transmission medium layer (3) on the luminous light path of led chip (2), described light transmission medium layer (3) comprises lens (31) at least, and the end face of these lens (31) comprises level and smooth curved surface.
2. a kind of great power LED that is applicable to road lighting according to claim 1 is characterized in that: the baseplane of described lens (31) is made up of the cocoon shape face.
3. a kind of great power LED that is applicable to road lighting according to claim 1 and 2, it is characterized in that: described light transmission medium layer (3) also comprises optical waveguide layer (32) and the light-converting material layer of being located between described lens (31) and the led chip (2) (33), and described optical waveguide layer (32) is positioned between described light-converting material layer (33) and the lens (31).
4. a kind of great power LED that is applicable to road lighting according to claim 1, it is characterized in that: described heat conduction support (1) is provided with reflector (4), described reflector (4) has LED installed surface and light reflecting slant, and described led chip (2) is located on the described LED installed surface.
5. a kind of great power LED that is applicable to road lighting according to claim 4 is characterized in that: the angle between described LED installed surface and the light reflecting slant is 10 °-90 °.
6. a kind of great power LED that is applicable to road lighting according to claim 4, it is characterized in that: the periphery of described reflector (4) is provided with the circuit board working of plastics (5) that cooperates with the bottom surface of described lens (31), form an airtight cavity between described lens (31) and the reflector (4), fill optical waveguide layer (32) and light-converting material layer (33) in this airtight cavity.
7. a kind of great power LED that is applicable to road lighting according to claim 6, it is characterized in that: described circuit board working of plastics (5) is provided with electrical connector (6), and the end that this electrical connector (6) is positioned at described circuit board working of plastics (5) is electrically connected with the electrode of described led chip (2).
8. a kind of great power LED that is applicable to road lighting according to claim 7 is characterized in that: described reflector is provided with at least two led chips in (4), and these led chips pass through series connection or/and parallel connection links to each other with electrical connector.
9. a kind of great power LED that is applicable to road lighting according to claim 6 is characterized in that: described reflector (4) is hollowed out by described circuit board working of plastics (5) mid portion and combines with described heat conduction support (1) and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200698547U CN202032397U (en) | 2011-03-16 | 2011-03-16 | High-power LED suitable for road lighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200698547U CN202032397U (en) | 2011-03-16 | 2011-03-16 | High-power LED suitable for road lighting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202032397U true CN202032397U (en) | 2011-11-09 |
Family
ID=44894694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200698547U Expired - Fee Related CN202032397U (en) | 2011-03-16 | 2011-03-16 | High-power LED suitable for road lighting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202032397U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980744A (en) * | 2012-11-14 | 2013-03-20 | 大连工业大学 | Method for measuring light distribution curve of optical catheter lighting system |
| US9638397B2 (en) | 2012-06-06 | 2017-05-02 | Philips Lighting Holding B.V. | Lighting apparatus and method for emitting light having different color temperatures |
| CN113782424A (en) * | 2021-08-31 | 2021-12-10 | 上海华力集成电路制造有限公司 | Process method for improving hot carrier injection reliability of MOS transistor |
-
2011
- 2011-03-16 CN CN2011200698547U patent/CN202032397U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9638397B2 (en) | 2012-06-06 | 2017-05-02 | Philips Lighting Holding B.V. | Lighting apparatus and method for emitting light having different color temperatures |
| CN102980744A (en) * | 2012-11-14 | 2013-03-20 | 大连工业大学 | Method for measuring light distribution curve of optical catheter lighting system |
| CN102980744B (en) * | 2012-11-14 | 2015-02-04 | 大连工业大学 | Method for measuring light distribution curve of optical catheter lighting system |
| CN113782424A (en) * | 2021-08-31 | 2021-12-10 | 上海华力集成电路制造有限公司 | Process method for improving hot carrier injection reliability of MOS transistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20180316 |