CN202972769U

CN202972769U - LED street lamp

Info

Publication number: CN202972769U
Application number: CN2012205094764U
Authority: CN
Inventors: 王森; 赵昆
Original assignee: Sichuan Sunfor Light Co Ltd
Current assignee: Sichuan Sunfor Light Co Ltd
Priority date: 2012-09-29
Filing date: 2012-09-29
Publication date: 2013-06-05
Anticipated expiration: 2022-09-29

Abstract

An LED street lamp comprises a base plate, a chip located on the base plate, a supporting lens located on the base plate and isolated from the chip, and a first luminous film arranged on the outer surface of supporting lens, wherein the supporting lens is in close contact with the first luminous film, and the first luminous film contains luminescent powder. The LED street lamp adopts the recyclable luminescent powder which is uniformly distributed, avoids the problem of the generation of light rings and light spots, adopts the supporting lens to insulate heat so as to lower the temperature of luminescent powder, improves the brightness of the luminescent powder, and further reduces the aging and the attenuation of the luminescent powder, so that the service life of the whole lamp is prolonged, assembling and disassembling are convenient, and maintenance is facilitated.

Description

A kind of LED street lamp

Technical field

The utility model relates to a kind of LED light-emitting device.

Background technology

The LED(light emitting diode) device is as a kind of novel solid light source, have not only that power consumption is low, volume is little, fast response time, long working life, be easy to the advantages such as light modulation toning, energy-conserving and environment-protective, and also greatly surmounting the conventional light source such as incandescent lamp, fluorescent lamp aspect production, manufacturing, application, therefore since the sixties are born, obtained significant progress.Be widely used at present the multiple lighting fields such as the illumination of LED lamp, Landscape Lighting, large screen display, traffic lights, room lighting, the utility model relates to the application of LED on street lamp uses.

The LED road-light light-source of main flow is mainly excite Yellow luminous powder and get with blue light, and traditional handicraft is to be coated on blue chip after Yellow luminous powder and silica gel mixing, through heating, silica gel to be solidified, namely to can be made into the LED road-light light-source.But, the formed LED road-light light-source of traditional handicraft, because luminescent powder directly contacts with chip, and chip temperature around luminescent powder when work can raise rapidly, and luminescent powder because the heat that chip light emitting produces is aging, causes its luminous efficiency to descend as a result.In addition, the chromaticity coordinates of luminescent powder also can be offset because of the rising of operating ambient temperature, finally affects luminous efficiency, glow color and the service life of LED street lamp.

In order to solve easily aging problem of luminescent powder in traditional LED street lamp, people have attempted in LED street lamp manufacturing process, luminescent powder and chip being divided and have been arranged.LED street lamp in existing technique, although luminescent powder and chip are separated, slowed down the aging speed of luminescent powder, still, due to the limitation of LED chip rising angle, the rising angle of the LED street lamp that makes thus is less, and light distribution is inhomogeneous, namely in the situation that from the chip sustained height, centered by the chip dead ahead, distance center light intensity nearby is the strongest, along with the increase light intensity of distance dies down gradually.

In order to address the above problem, publication number is that the application for a patent for invention employing of CN101943329A arranges a reflecting piece on phosphor powder layer, allows the light that fluorescent material sends scatter out after the surrounding reflection, reduces whereby dazzle; Publication number is that the application for a patent for invention of CN1996288A is processed by rational, makes the exiting surface surface roughening of lens and produces microcosmic soft focus effect, thereby reduce halation; But aging problem of the overheated rear fluorescent material of unresolved rising angle and device still both.Publication number is that the application for a patent for invention of US2007/0120135A1 is adopted fluorescent material is distributed in inner lens surfaces/outer surface, and then the technique of separating with chip, and according to analog computation, after using described method to encapsulate, the packaging efficiency of product can be near 100%.But this technique still faces the rising angle problem of white light, and needs fluorescent material is distributed in the substrate place of chip, fragile chip in manufacture process.

Summary of the invention

In order to solve the problems of the technologies described above, the purpose of this utility model is to provide a kind of LED street lamp, and it comprises substrate, is positioned at the chip on described substrate; The support of lens that is positioned on described substrate and is spaced apart with described chip; Be arranged on the first luminescent film of described support of lens outer surface; This support of lens and described the first luminescent film close contact, and comprise luminescent powder in described the first luminescent film.

Support of lens in the utility model is used glass material, and the first luminescent film is used the silicon rubber material, mixes luminescent powder in the first luminescent film, and the first luminescent film is sleeved on support of lens, and support of lens covers chip, forms luminescent device.Form the LED street lamp by a plurality of luminescent device combinations as light source.Adopt in the utility model and scatter uniform recyclable luminescent powder, avoid occurring the problem of aperture and hot spot, the use support of lens is heat insulation, reduced the temperature at luminescent powder place, improved the brightness of luminescent powder, and then reduced the aging decay of luminescent powder, thus the service life of whole light fixture extended, and assembling, convenient disassembly.

Description of drawings

Fig. 1 is the LED lamp post structure of mono-layer propping lens no-reflection layer;

Fig. 2 is the LED lamp post structure that the mono-layer propping lens have reflector layer;

Fig. 3 is the LED lamp post structure of two-layer support of lens no-reflection layer;

Fig. 4 is the LED lamp post structure of Multi-layer supporting lens no-reflection layer;

Fig. 5 is the LED lamp post structure that a plurality of luminescent devices are combined to form.

The specific embodiment

For making the purpose of this utility model, technical scheme and advantage more cheer and bright, below in conjunction with the specific embodiment and with reference to accompanying drawing, the utility model is further described.Should be appreciated that, these descriptions are exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, omitted the description to known features and technology, to avoid unnecessarily obscuring concept of the present utility model.

In the specific design to light fixture, the aluminium base of 5.5cm * 5.5cm size is provided, radius of curvature is that 6cm weight is the toroidal lens of the glass material of 10g, as support of lens, then forms the thick Al of 0.5mm on substrate ₂O ₃Reflector layer, and with silica gel, the blue chip of 3.5 * 2.8mm size is fixed on the center of substrate.

With the Yellow luminous powder (XLLY-01A of 0.80g, Sichuan Xinli Light Source Co., Ltd.), 1.20g medium particle diameter is the glass microballoon of 15um, and 2.00g silicon rubber (DOW CORNING RBB-2420) is mixed together, and uses masticator (X (S) N-10) pugging mullering 30 minutes.Use film laminator 150 ℃ of lower constant temperature 5 minutes, the mixture that stirs is pressed into above-mentioned support of lens shape, make film, then this film is overlying on the support of lens outside.

Fig. 1～5 show in detail the light fixture that reflector layer and Multi-layer supporting lens no-reflection layer structure are arranged according to mono-layer propping lens no-reflection layer, the mono-layer propping lens of the utility model embodiment manufacturing, and show a plurality of luminescent device combining structures.

In fitting structure shown in Figure 1, bottom substrate 1 is set and is positioned at chip 2 and support of lens 3 on substrate, described support of lens 3 arranges away from chip 2, the first luminescent film 4 that comprises luminescent powder 5 be arranged on described support of lens 3 outer surfaces and with support of lens 3 close contacts, also be not provided with reflector layer 6 in described substrate 1, part that covered by described chip 2 in structure shown in Figure 2.Wherein, described the first luminescent film 4 is the soft light-transmission material, and described support of lens 3 is the hard light transmissive material, and described soft light-transmission material is silicon rubber, and described hard light transmissive material is one or more the combination in glass, PMMA and PC material.

In Fig. 3 and structure shown in Figure 4, added the structure of support of lens, luminescent film and luminescent powder on architecture basics shown in Figure 1, so that two-layer support of lens structure and the Multi-layer supporting lens arrangement of no-reflection layer to be shown respectively.Wherein, in the structure of two-layer support of lens, be positioned at described the first luminescent film 4 and away from the outside of described chip 2 and with the be spaced apart intimate of the second support of lens 7, the second support of lens 7 of described the first luminescent film 4, the second luminescent film 8 be set, contain luminescent powder 9 in described the second luminescent film 8; In the structure of Multi-layer supporting lens, be positioned at described the second luminescent film 8 away from the outside of described the first luminescent film 4 and with described the second luminescent film 8 the 3rd support of lens 10 that is spaced apart, and the spaced setting of described Multi-layer supporting lens, and in the intimate of the 3rd support of lens 10, the 3rd luminescent film 11 is set, contain luminescent powder 12 in described the 3rd luminescent film 11.

Fig. 5 shows the fitting structure that a plurality of luminescent devices combine.

Diagram: 1, substrate; 2, chip; 3, support of lens; 4, the first luminescent film; 5, luminescent powder; 6, reflector layer; 7, the second support of lens; 8 second luminescent film; 9, luminescent powder; 10, the 3rd support of lens; 11, the 3rd luminescent film; 12, luminescent powder; 13, luminous lens.

Should be understood that, the above-mentioned specific embodiment of the present utility model only is used for exemplary illustration or explains principle of the present utility model, and does not consist of restriction of the present utility model.Therefore, in the situation that do not depart from any modification that spirit and scope of the present utility model make, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.In addition, the utility model claims are intended to contain whole variations and the modification in the equivalents that falls into claims scope and border or this scope and border.

Claims

1. LED street lamp comprises: substrate and be positioned at chip on described substrate is characterized in that:

This LED street lamp also comprises the support of lens that is positioned on described substrate and is spaced apart with described chip, and the first luminescent film that is arranged on described support of lens outer surface; This support of lens and described the first luminescent film close contact.

2. LED street lamp according to claim 1, is characterized in that, described the first luminescent film is the soft light-transmission material, and described support of lens is the hard light transmissive material.

3. LED street lamp according to claim 2, is characterized in that, described soft light-transmission material is silicon rubber.

4. LED street lamp according to claim 1, is characterized in that, describedly is arranged on part reflector layer substrate, that do not covered by described chip.

5. LED street lamp according to claim 4, is characterized in that, described the first luminescent film is the soft light-transmission material, and described support of lens is the hard light transmissive material.

6. LED street lamp according to claim 5, is characterized in that, described soft light-transmission material is silicon rubber.

7. according to claim 3 or 6 described LED street lamps, is characterized in that, described first luminescent film that is positioned at is away from the outside of described chip and the second support of lens of being spaced apart with described the first luminescent film.

8. LED street lamp according to claim 7, is characterized in that, the intimate of described the second support of lens arranges the second luminescent film.

9. LED street lamp according to claim 8, is characterized in that, described second luminescent film that is positioned at is away from the outside of described the first luminescent film and the Multi-layer supporting lens that are spaced apart with described the second luminescent film, and the spaced setting of described Multi-layer supporting lens.

10. LED street lamp according to claim 9, is characterized in that, has at least the intimate of one deck support of lens that luminescent film is set in described Multi-layer supporting lens.