CN103867919A - LED (Light-Emitting Diode) shadowless lamp - Google Patents

Abstract

The invention relates to an LED (Light-Emitting Diode) shadowless lamp. The LED shadowless lamp comprises a lamp panel, a diffusion plate and an LED light source, wherein the opening of the lamp panel is enclosed by the diffusion plate; the diffusion plate 2 is positioned between two positions of one time and two times the longitudinal distance between two adjacent LED light sources (3). Due to the arrangement, LED light sources are emitted after being crossed, and adjacent LED light sources are prevented from forming shadows on the diffusion plate. The LED shadowless lamp has the advantages that the emitted light rays are uniform, LED light source particles cannot be seen during working, and a shadowless effect is achieved.

Description

LED shadowless lamp

Technical field

The present invention relates to a kind of light fixture, particularly LED shadowless lamp.

Background technology

Existing LED (Light Emitting Diode, light emitting diode) light fixture and light source, be mostly spot light, easily produces dazzling dazzle, watches for a long time, and fatiguability even causes visual impairment.Chinese invention patent CN201110498 discloses a kind of lighting device, specifically belong to a kind of lamp panel with LED illumination, comprise lamp panel shell and lampshade, lampshade uses aluminium sheet to be processed into the overall reflective grid in 16 or 25 square chambeies, this reflection grid forms grid by the parabolic reflecting plate that is upper and lower and that be symmetrical set, between reflecting plate in grid-like and reflecting plate, be arranged to the trapezoidal independent reflection room of the little arcuation in the large end of face, each independently reflection room bottom is provided with LED lamp.This patent has just disclosed the effect that how to maximally utilise LED and has obtained saving power consumption, and arrange the lighting effect that reaches similar traditional grid by matrix form, although adopting each LED to set up the independently purpose of design of reflection room is to reduce LED dazzle, but the essence solution that reduces LED dazzle is not provided, the implementation method of area source is not described yet.

Chinese invention patent discloses CN101273231B lamp box, possesses distributing board, be arranged in the multiple point source of lights on above-mentioned distributing board, be configured in above-mentioned point source of light light reflecting board around, and the light diffusion surface plate of the light transmission relatively configuring with above-mentioned light reflecting board, above-mentioned light reflecting board have surround above-mentioned multiple point source of lights each and be formed as being inverted multiple recesses that hold of polygonal cone-shaped, above-mentioned point source of light is inserted respectively and is formed in the above-mentioned inserting hole that holds concave bottom, and above-mentioned multiple top of recess that holds is connected with the top that holds recess of adjacency separately, the above-mentioned top that holds recess is positioned at illuminating part from the above-mentioned point source of light position below the point of bisection of the distance of above-mentioned light diffusion surface plate and more than the illuminating part of above-mentioned point source of light.Multiple point source of lights on distributing board LED light intersect less than formation shadow region, position, thereby can not make LED lamp wiring intersect equably mixing, still can produce dazzle.

Above-mentioned LED lamp wiring can not produce intersection, has following large shortcoming: while 1) work, can see LED particle, and dazzling; 2) can not accomplish without shadow, on light shield, occur obvious blackening; 3) optical efficiency is not high, lower than 60lm/W.

Summary of the invention

The present invention is intended to solve the above-mentioned defect of prior art, provide a kind of not dazzling, without the LED shadowless lamp of shadow and high optical efficiency.

The technical solution adopted in the present invention is: LED shadowless lamp, comprise lamp panel 1, diffuser plate 2 and LED light source 3, and lamp panel 1 opening is sealed by diffuser plate 2; The light that two horizontal adjacent LED light sources 3 send forms and intersects, and the light that two longitudinal adjacent LED light sources 3 send forms and intersects; Described diffuser plate 2 is positioned between 1 times of two adjacent LED light source (3) fore-and-aft distances and twice position.

The light angle that described LED light source 3 sends is α.

Lateral separation between described two horizontal adjacent LED light sources 3 is A, and the ray intersection position that two horizontal adjacent LED light sources 3 send and the distance of LED light source 3 are

Fore-and-aft distance between described two longitudinal adjacent LED light sources 3 is B, and the ray intersection position that two longitudinal adjacent LED light sources 3 send and the distance of LED light source 3 are

Described diffuser plate 2 is between H1 and H2.

Described LED light source 3 is that matrix is arranged in lamp panel 1 bottom.

Described LED light source 3 is arranged as square or rectangular at the matrix of lamp panel 1 bottom.

Compared with prior art, between the light crossover location that the light crossover location sending at two horizontal adjacent LED light sources 3 by diffuser plate 2 due to the present invention and two longitudinal adjacent LED light sources 3 send, arrange like this and make to emit again after LED light source 3 formation intersections, make adjacent LED light source 3 can not form shade at diffuser plate 2, there is the light emitting even, reach the advantage without the effect of shadow; When work, can't see LED light source 3 particles, not dazzling; Optical efficiency significantly improves, and optical efficiency is higher than advantages such as 60lm/W.

Brief description of the drawings

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing to embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the exploded view of LED shadowless lamp of the present invention;

Fig. 2 is that in Fig. 1 of the present invention, LED light source is square arrangement schematic diagram;

Fig. 3 is the LED light source arrangement schematic diagram that is rectangle in Fig. 1 of the present invention;

Fig. 4 is the ray intersection schematic diagram that in Fig. 1 of the present invention, laterally adjacent LED light source sends;

Fig. 5 is the ray intersection schematic diagram that in Fig. 1 of the present invention, longitudinally adjacent LED light source sends.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.

As shown in Figure 1: LED shadowless lamp, comprise lamp panel 1, diffuser plate 2 and LED light source 3, lamp panel 1 opening is sealed by diffuser plate 2; LED light source 3 is that matrix is arranged in lamp panel 1 bottom, and as shown in Figure 2, the matrix of LED light source 3 is arranged in square, and as shown in Figure 3, the matrix of LED light source 3 is arranged in rectangle; Lateral separation between two horizontal adjacent LED light sources 3 is A, and the fore-and-aft distance between two longitudinal adjacent LED light sources 3 is B.

Shown in Fig. 4, Fig. 5, the light that two horizontal adjacent LED light sources 3 send forms and intersects, and the light that two longitudinal adjacent LED light sources 3 send forms and intersects; Described diffuser plate 2 is positioned between 1 times of two adjacent LED light source (3) fore-and-aft distance B and twice position, between 1B and 2B, after making LED light source 3 form intersection by this distance setting of diffuser plate, emit again, make adjacent LED light source 3 can not form shade at diffuser plate 2, there is the light emitting even, reach the advantage without the effect of shadow; When work, can't see LED light source 3 particles, not dazzling; Optical efficiency significantly improves, and optical efficiency is higher than advantages such as 60lm/W.

The light angle that LED light source 3 sends is α, and the lateral separation between two horizontal adjacent LED light sources 3 is A, and the ray intersection position that two horizontal adjacent LED light sources 3 send and the distance of LED light source 3 are

fore-and-aft distance between two longitudinal adjacent LED light sources 3 is B, and the ray intersection position that two longitudinal adjacent LED light sources 3 send and the distance of LED light source 3 are

Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Its embodiment in the present invention, those of ordinary skill in the art, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.

Claims (7)

1.LED shadowless lamp, comprise lamp panel (1), diffuser plate (2) and LED light source (3), lamp panel (1) opening is sealed by diffuser plate (2), it is characterized in that the light that two horizontal adjacent LED light sources (3) send forms intersection, the light that two longitudinal adjacent LED light sources (3) send forms and intersects; Diffuser plate (2) is positioned between 1 times of two adjacent LED light source (3) fore-and-aft distances and twice position.

2. LED shadowless lamp according to claim 1, is characterized in that the light angle that described LED light source (3) sends is α.

3. LED shadowless lamp according to claim 2, it is characterized in that the lateral separation between described two horizontal adjacent LED light sources (3) is A, the ray intersection position that two horizontal adjacent LED light sources (3) send and the distance of LED light source (3) are $H1=\frac{A}{2\mathrm{tg}\frac{\mathrm{\α}}{2}}.$

4. LED shadowless lamp according to claim 2, it is characterized in that the fore-and-aft distance between described two longitudinal adjacent LED light sources (3) is B, the ray intersection position that two longitudinal adjacent LED light sources (3) send and the distance of LED light source (3) are $H2=\frac{B}{2\mathrm{tg}\frac{\mathrm{\α}}{2}}.$

5. according to the arbitrary described LED shadowless lamp of claim 3 or 4, it is characterized in that described diffuser plate (2) is between H1 and H2.

6. LED shadowless lamp according to claim 1, is characterized in that described LED light source (3) is matrix arrangement in lamp panel (1) bottom.

7. LED shadowless lamp according to claim 6, is characterized in that described LED light source (3) is arranged as square or rectangular at the matrix of lamp panel (1) bottom.

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