CN202048400U

CN202048400U - High-power light-emitting diode (LED) area light

Info

Publication number: CN202048400U
Application number: CN2010206953569U
Authority: CN
Inventors: 石小巍; 张群雁; 贾守波; 鲁志本
Original assignee: Shanghai Radio Equipment Research Institute
Current assignee: Shanghai Radio Equipment Research Institute
Priority date: 2010-12-30
Filing date: 2010-12-30
Publication date: 2011-11-23
Anticipated expiration: 2020-12-30

Abstract

The utility model provides a high-power light-emitting diode (LED) area light, wherein a lens is added outside an LED of the area light, the structure is reasonable, the lighting distribution uniformity of the area light can be increased, and the LED utilance and the LED luminaire efficiency can be also improved. The high-power LED area light is characterized in that: the lens with a diffusion effect is installed on a high-power LED chip of the area light, and consists of two spherical surfaces with the set curvature radiuses, the emergent light of an LED is diffused through the lens, so the defect that the luminous intensity of the existing LED is centralized at the center while the luminous intensity at the peripheral direction is weak is overcome, accordingly, the emergent lights of the whole area light are more uniform, and the luminous effect is higher.

Description

A kind of great power LED face light modulation

Technical field

The utility model relates to the high-power LED light source technical field.

Technical background

At present, the means of illumination of existing LED face light modulation is: led array is distributed on the face light modulation frame base plate, and the light that LED sends directly penetrates via diffuser plate.But, the great power LED mounting distance is far away, and because the LED characteristics of luminescence, certain rising angle is arranged, whole light modulation luminous intensity is mainly by each LED emergent light stack, cause the light distribution inequality, zone outside the rising angle is owing to light intensity forms obvious dark space inadequately, the central area is bright excessively owing to superpose simultaneously, has therefore produced tangible light and shade distribution in high-power light modulation, has wasted light energy, and reduced optical efficiency, LED light intensity in the face light modulation is evenly distributed, improve optical efficiency, become the main research topic of industry.

The utility model content

Technical problem to be solved in the utility model is, at the deficiencies in the prior art, provides great power LED face light modulation, and is rational in infrastructure, can increase face light modulation light intensity uniformity, and can improve the LED utilance and improve the LED Luminaire efficiency.

For solving the problems of the technologies described above, technical solution of the present utility model is:

A kind of great power LED face light modulation, led array are distributed on the face light modulation frame base plate; It is characterized in that: each LED of described led array goes up lens of cover; There is a hemi-spherical cavities that is used to hold LED the inside of described lens, radius is 0.5 centimetre, the size of radius can also be adjusted according to used chip size, can not influence lens and go out light effect, described LED is arranged on the sphere center position of hemi-spherical cavities, the light of described LED is by hemispheric plane of incidence incident, and the lower edge of described lens is provided with flange arrangement can make lens be fixed on the base plate; The upper surface of described lens is the exit facet of a spherical crown; The exit facet of described lens is spheres that the emergent light of center position is dispersed, and radius of curvature is 4 centimetres.The high-power LED lens chip increases lens outward, a little less than the light of middle light intensity both sides.Integrated bead is arranged on the described lens body, and the hole on the flange is used to carry out rivet and fixes.

The utility model can bring following beneficial effect:

The beneficial effects of the utility model are: the design and use of lens make the output intensity can more uniform distribution, thereby the light uniformity in the raising area source, face light modulation surface no longer includes the hot spot that light and shade replaces, and makes light fixture more attractive in appearance, and has increased optical energy utilization efficiency.This lens processing and installation simultaneously is all than being easier to, and be with low cost, is particularly suitable for producing in batches.

Description of drawings

Fig. 1 is the stereogram of the lens of an embodiment of the present utility model

Fig. 2 is the stereogram of the lens of an embodiment of the present utility model

Fig. 3 is a schematic diagram after the installation of an embodiment of the present utility model

Fig. 4 is the local enlarged diagram of an embodiment of the present utility model

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

In conjunction with referring to Fig. 1, Fig. 2, hemi-spherical cavities 3 of the inside moulding of lens is used to place great power LED.LED is placed on the sphere center position of hemi-spherical cavities 3.The light of LED is by first surface 1 incident, and by 2 outgoing of second curved surface, first surface 1 is the plane of incidence again, and second curved surface 2 is an exit facet; First surface 1 is a hemisphere face, and spherical radius is 0.5cm, and spherical radius can also adjust accordingly according to the led chip size, does not influence light outgoing effect.Can make incident ray have better angle to inject; The radius of second curved surface 2 is 4cm, and the centre distance of the first surface 1 and second curved surface 2 is 0.5cm, and emergent ray is dispersed to the edge, thereby disperses the strong excessively light in LED central area.The high-power LED lens chip 7 outer lens 8 that increase are a little less than the light of middle light intensity both sides.Integrated bead 6 is arranged on the described lens body, and the hole 5 on the flange is used to carry out rivet and fixes.

Each lens is installed in respectively on the base plate at corresponding LED edge.The lens lower edge is provided with flange arrangement, is equipped with the position, hole on the flange arrangement, fixes with rivet and base plate.

The radius of curvature of outgoing curved surface circle is 4cm in the present embodiment, and radius can be regulated, and radius is littler, to light to disperse effect stronger.The radius of curvature of second curved surface 2 must be greater than 1cm.

Lens of the present utility model are integrated structures, can change outgoing sphere 2 radius of curvature as requested, to reach expection light path control target.When the radius of first surface 1 is 0.5cm, when the centre distance of the first surface 1 and second curved surface 2 was 0.5cm, the radius of curvature of second curved surface 2 was that to disperse effect in the 2cm time be not clearly, so that radius of curvature may be selected in the 2-6cm scope is relatively good.When the radius of first surface 1 changed to some extent along with the size of LED, the also corresponding thereupon adjustment of the radius of curvature of second curved surface 2 got final product.

The above all is preferable implementations of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included within the utility model patent claim.

Claims

1. a great power LED face light modulation is characterized in that: lens of the last cover of each LED of described led array; There is a hemi-spherical cavities that is used to hold LED the inside of described lens, and LED is arranged on the centre of sphere of hemi-spherical cavities, and light is by hemispheric plane of incidence incident, and radius is 0.5 centimetre, and the size of radius can also be adjusted according to used chip size; The lower edge of described lens is provided with flange arrangement can make lens be fixed on the base plate; The upper surface of described lens is the exit facet of a spherical crown; The exit facet of described lens is spheres that the emergent light of center position is dispersed, and radius of curvature is 4 centimetres.

2. according to right 1 described a kind of great power LED face light modulation, it is characterized in that: the outer lens [8] that increase of high-power LED lens chip [7], a little less than the light of middle light intensity both sides.

3. according to right 1 described a kind of great power LED face light modulation, it is characterized in that: integrated bead [6] is arranged on the described lens body, and the hole on the flange [5] are used to carry out rivet and fix.

4. according to right 1 described a kind of great power LED face light modulation, it is characterized in that: described radius of curvature can be adjusted accordingly: when the radius of first surface [1] is 0.5cm, when the centre distance of first surface [1] and second curved surface [2] is 0.5cm, the radius of curvature of second curved surface [2] is to disperse in the 2cm time, and radius of curvature is in the 2-6cm scope; The radius of curvature of second curved surface [2] is with the corresponding adjustment of size of LED.