CN201434336Y

CN201434336Y - LED reflective cup

Info

Publication number: CN201434336Y
Application number: CN2009201305919U
Authority: CN
Inventors: 刘刚; 冯军
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-10
Filing date: 2009-04-10
Publication date: 2010-03-31
Anticipated expiration: 2019-04-10

Abstract

The utility model discloses an LED reflective cup, which is approximately in the shape of a prismatic table and provided with a plurality of reflective surfaces divided into a plurality of reflectivesurface groups in a warp direction on the inner wall of the reflective cup. Besides, each reflective surface group is divided into a plurality of reflective surfaces in the weft direction of the reflective cup. Accordingly, as the inner wall of the reflective cup is divided into the reflective surfaces both in the warp direction and the weft direction, light radiated by an LED lamp bead is enabledto be mixed evenly in reflecting process, and the purpose of evenly splitting light can be achieved in a certain radiation range. In addition, the light emitted by the LED lamp bead can be radiated by only one-time reflection, and the light-emitting efficiency of the lamp is ensured.

Description

The LED reflector

Technical field

The utility model relates to LED (Light Emitting Diode) technical field of lamps, more particularly, relates to a kind of LED reflector.

Background technology

Reflector is widely used on flashlight, the shot-light lighting, but these reflectors are cone structure, is circular by the hot spot of its reflection.It is rectangle or ellipse etc. that LED street lamp, LED tunnel etc. then require hot spot, and above-mentioned cone structure does not obviously satisfy requirement.

Please refer to Fig. 1, be the disclosed a kind of LED reflector of Chinese patent ZL200820114522, it is shaped as the class shape of falling the truncated rectangular pyramids of uncovered, and has four

reflective surfaces

1,3,5,6, and each reflective surface is provided with arc male and fomale(M﹠F) 4.And per two reflective surfaces are formed by same parabolical two symmetric part translations, wherein 1,5 to two length of sides of two long opposite faces in limit are lacked 3,6 opposite face height, the reflector bottom surface is provided with four fixed legs that are connected with wiring board, and reflector has a hole 7 that holds LED lamp pearl on the bottom.Cover on this reflector on each LED of LED street lamp or LED Tunnel Lamp according to Same Way, can change the rising angle of LED, make it to form ellipse or rectangular light spot, reach the purpose of LED street lamp, LED Tunnel Lamp requirement even beam split in certain range of exposures.

But in fact, because upwards at above-mentioned reflector warp, setting of each reflective surface comparatively single (having only four faces 1,3,5,6) and no change; On the broadwise of above-mentioned reflector, also just be arranged to some arc male and fomale(M﹠F)s 4 on each reflective surface simply.Though reflector can change the rising angle of LED, make it to form ellipse or rectangular light spot, can not realize making the purpose of light fixture even beam split in certain range of exposures.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of LED reflector, and it can make light fixture evenly beam split in certain range of exposures.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of LED reflector is provided, it roughly is the terrace with edge shape and has a plurality of reflective surfaces, described a plurality of reflective surface upwards is divided into a plurality of reflective surface groups at the warp of described reflector inwall, and described each reflective surface group also is divided into a plurality of reflective surfaces on the broadwise of described reflector.

Like this and since the reflector inwall on warp-wise and broadwise, all be distinguished into reflective surface, thereby the light that makes LED lamp pearl be exhaled evenly mixes in the process of reflection, is implemented in certain range of exposures the evenly purpose of beam split; In addition, the light that LED lamp pearl is sent only needs primary event to penetrate, and has also guaranteed the luminous efficiency of light fixture.

Description of drawings

Fig. 1 is that the master of LED reflector in the prior art looks schematic diagram;

Fig. 2 is that the master of the utility model one preferred embodiment looks schematic diagram;

Fig. 3 is a schematic side view embodiment illustrated in fig. 2;

Fig. 4 is a partial schematic sectional view embodiment illustrated in fig. 2.

The specific embodiment

In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Please refer to Fig. 2, be a preferred embodiment of the present utility model, this LED reflector roughly is the terrace with edge shape and has a plurality of reflective surfaces 11, described a plurality of reflective surface 11 upwards is divided into a plurality of reflective surface group 1A at the warp of described reflector inwall, and described each reflective surface group 1A also is divided into a plurality of reflective surfaces 11 on the broadwise of described reflector.Like this and since the reflector inwall on warp-wise and broadwise, all be distinguished into reflective surface, thereby the light that makes LED lamp pearl be exhaled evenly mixes in the process of reflection, is implemented in certain range of exposures the evenly purpose of beam split; In addition, the light that LED lamp pearl is sent only needs primary event to penetrate, and has also guaranteed the luminous efficiency of light fixture.

Below said structure is further described in detail.

Described reflector roughly is the truncated rectangular pyramids shape, and its inwall is surrounded by four curved surfaces 12,13,14,15 and forms, and a wherein relative suite face (promptly 12 and 14,13 and 15) is formed around described reflector axis rotation by same parabolic segment.Be equipped with a plurality of reflective surface group 1A in each curved surface, described a plurality of reflective surface group 1A are directly proportional around the angle that the reflector axis is turned over described reflector inwall in the distribution density of described reflector inwall through making progress.Because at two curved surface joints, the reflector inwall is bigger around the angle that the reflector axis is turned over, the density of reflective surface group 1A is also bigger, and is correspondingly, also less at the area of reflective surface 11.And curved surface 12,14 is longer than curved surface 13,15, and the reflective surface group 1A that is positioned on the curved surface 13,15 is close in the reflective surface group 1A that is positioned on the curved surface 12,14.In addition, described reflector also can be three terrace with edge shapes, five terrace with edge shapes etc., and just terrace with edge also can not be positive terrace with edge.

Please refer to Fig. 2 and Fig. 4, in each reflective surface group 1A, the distribution density of described reflective surface 11 is directly proportional with the curvature of described reflector inwall.Owing to have different curvature on the difference of reflector inwall, its inwall curved surface is formed around described reflector axis rotation by parabolic segment, and the curvature of described parabolic segment is less gradually to the other end from the end near the parabola summit, so the area of reflective surface 11 also reduces from top to bottom gradually.In addition, in each reflective surface group 1A, described reflective surface 11 increases gradually with the angle of described reflector axis, and the light that makes LED lamp pearl be sent only needs primary event to penetrate, and has also guaranteed the luminous efficiency of light fixture.

In the present embodiment, described reflective surface 11 is a square, and its shape also can be one or more in the following flat shape: rectangle, square, rhombus, parallelogram, triangle, regular polygon etc.

Please refer to Fig. 2 and 3, described reflector bottom offers the installing hole 16 that holds LED lamp pearl, and described reflector bottom outside is provided with two fixed legs that are connected with wiring board 17.These structures and prior art are roughly the same, do not do at this and give unnecessary details.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1, a kind of LED reflector, it is the terrace with edge shape and has a plurality of reflective surfaces, it is characterized in that: described a plurality of reflective surfaces upwards are divided into a plurality of reflective surface groups at the warp of described reflector inwall, and described each reflective surface group also is divided into a plurality of reflective surfaces on the broadwise of described reflector.

2, LED reflector as claimed in claim 1 is characterized in that: described a plurality of reflective surface groups are directly proportional around the angle that the reflector axis is turned over described reflector inwall in the distribution density of described reflector inwall through making progress.

3, LED reflector as claimed in claim 2 is characterized in that: in the described reflective surface group, the distribution density of described reflective surface is directly proportional with the curvature of described reflector inwall.

4, LED reflector as claimed in claim 3 is characterized in that: in the described reflective surface group, the angle of described reflective surface and described reflector axis increases gradually.

5, as any described LED reflector of claim 1 to 4, it is characterized in that: described reflector is the truncated rectangular pyramids shape, and its inwall is surrounded by four curved surfaces and forms, and a wherein relative suite face is formed around described reflector axis rotation by same parabolic segment.

6, as any described LED reflector of claim 1 to 4, it is characterized in that: described reflective surface is the plane, and it is shaped as in the following shape one or more: rectangle, square, rhombus, parallelogram, triangle, regular polygon.

7, as any described LED reflector of claim 1 to 4, it is characterized in that: described reflector bottom offers the installing hole that holds LED lamp pearl.

8, as any described LED reflector of claim 1 to 4, it is characterized in that: described reflector bottom outside is provided with the fixed leg that is connected with wiring board.