CN200993854Y

CN200993854Y - Reflective LED display screen

Info

Publication number: CN200993854Y
Application number: CN 200620125551
Authority: CN
Inventors: 肖西昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-29
Filing date: 2006-11-29
Publication date: 2007-12-19
Anticipated expiration: 2016-11-29

Abstract

The utility model relates to a reflecting LED display screen, and belongs to a luminous display technical field. The display screen is composed of a base plate and LED, of which a side of the base plate is provided with a concave light reflecting bowl array, and the pin of the LED is arranged through the center at the bottom of the light reflecting bowl. By using the reflecting LED display screen of the utility model, the installing distance of the LED is reduced duplicatedly, and the opening rate of the LED display screen is greatly increased, so that the particle forms on the LED display screen are removed thoroughly and the luminance is increased, in comparison with the existing LED display screen, and accordingly, the definition of the display menu can be improved obviously.

Description

The reflecting LED display screen

Technical field

The utility model relates to a kind of LED display, especially relates to a kind of architecture advances that existing LED display is carried out, and belongs to the active display technical field.

Background technology

Nowadays, LED display has been widely used in all trades and professions as a kind of display media of develop rapidly.In particular as the LED display of video, be used for the issue of enterprises and institutions' image propaganda and public place information with its modern attitude, become users' first-selection.

But understand according to the applicant, all there is the not high shortcoming of sharpness in existing LED display, is promptly closely seeing tangible graininess.Trace it to its cause, except that LED display compare with other display screen pixel less, be that at all LED itself belongs to pointolite.Be embodied in: one, in the LED display after the existing assembling, certain installing space is always arranged between each LED, (see figure 1), thus cause on-screen displays that tangible graininess is arranged.Two, in existing LED display, low as each LED radiative luminous flux on unit area of emission light unit, promptly aperture opening ratio is low; Especially existing LED display adopts to gather mostly penetrates type LED, under the installing space situation that can't reduce between each LED, more makes the aperture opening ratio step-down of entire display screen.Three, reduce installing space between each LED for improving by increase LED quantity in unit area or to LED itself, not only the manufacturing technology difficulty big, be difficult to accomplish, promptly allow to accomplish also to make cost of manufacture increase considerably and use the energy consumption height, and be difficult to reduce again installing space, installing space at present between the LED of LED display mostly is 20mm greatly, and minimum installing space is also more than 4mm.

The utility model content

The purpose of this utility model is: at the defective of above-mentioned existing LED display existence, a kind of reflecting LED display screen is proposed, this display screen can reduce installing space between each LED at double by the reflection configuration of setting up, and can significantly improve the LED display aperture ratio of pixels; Thereby eliminate the graininess that LED display occurs when display image, improve the luminous utilization factor of LED simultaneously.

In order to reach above purpose, the technical solution of the utility model is to propose a kind of reflecting LED display screen, this display screen comprises substrate and LED, its improvements are, the one side of described substrate is shaped on spill reflector array, and the pin of described LED is installed on the center of described reflector bottom.

The perfect of technique scheme be, the concave surface of described reflector is a revolving conic surface, and the surface of described concave surface is covered with reflective membrane, and the open face of described reflector is a square.

Further improving of technique scheme be, described LED is the scattering Wide-angle LED, and its light emitting source is on the focus of described reflector concave surface.

Behind the actual use reflecting LED display screen of the present utility model, because the light overwhelming majority that the LED energising is sent is transmitted into earlier on the concave surface of reflector, light behind concave reflection, the light beam of uniform and substantially parallel ejaculation in the open face scope of formation with reflector, be that the light of each LED scattering enlarges after reflection that to become uncovered with each reflector be that the parallel beam on boundary penetrates, and easy make very little of the spacing between each reflector, therefore compare existing LED display, not only the spacing between each LED light emitting source can reduce an order of magnitude, and can improve the aperture opening ratio of LED display greatly.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of existing LED display.

Fig. 2 is the structural representation of the utility model embodiment reflecting LED display screen.

Fig. 3 is the structural representation of single led and reflector among Fig. 2.

Fig. 4 is the left-hand cut-open view of Fig. 3.

Embodiment

Embodiment one

As shown in Figure 1, existing LED display has only substrate 1 and LED2, and the reflecting LED display screen of present embodiment comprises substrate 1 and LED2 as shown in Figure 2, is suppressed with the depression reflector 3 that is arranged in arrays in the one side of substrate 1.Substrate 1 adopts aluminium sheet to make, and LED2 adopts the scattering Wide-angle LED.Shown in Fig. 3,4, the concave surface of reflector 3 is a paraboloid of revolution 4, and its surface is coated with reflective membrane; The open face of reflector 3 is a square.

Main fabrication and installation process is, according to required display screen size, cut standard-sized aluminium sheet as substrate 1 (benchmark template), on custom-designed mould, suppress substrate 1 then, make the one side of substrate 1 form the reflector 3 that caves in, the spacing that is formed between each reflector 3 on the substrate 1 can be accomplished less than 0.4mm.Again the substrate 1 that presses is electroplated, made the concave surface (parabolic 4) of reflector 3 form reflexed light film; At reflector 3 concave face bears, the electrode pin of LED2 is passed from making the hole, and be fixed on the substrate 1 of concave bottom center; Adjust light emitting source (wick) position of LED2 before fixing, make it to be on the focus of reflector 3 concave surfaces (focus that the reflector of making through specialized designs 3 can be easy to determine its parabola 4).So promptly finishing a LED2 on the substrate 1 installs, the LED display module of formation standard, again each standard LED display module is assembled into required large display screen, the last acrylic board that covers a dark color on the surface of large display screen is promptly made the New LED giant-screen.

During use, the LED display that assembles is connected with the automatically controlled device that waits by common LED display mounting means.As shown in Figure 4, most scattered lights that LED2 after the energising sends all are mapped to earlier on the parabola 4 of reflector 3, light after parabolic 4 reflection forms and the identical square parallel beam of reflector 3 aperture areas size thus along the substantially parallel ejaculation of the opening of reflector 3.Because of the spacing between each reflector 3 very little (less than 0.4mm), thus almost very close to each other between the parallel beam that each reflector 3 penetrates, thus existing serious graininess when fundamentally having eliminated existing LED display display image.Simultaneously, because the reflex of the parabola 4 of reflector 3, parallel ejaculation after the overwhelming majority that makes LED2 send scattered light all is reflected, therefore improved the aperture opening ratio of LED display, it is the same that this just is equivalent to have increased pixel in unit area, not only significantly increase the sharpness of LED display display image, and improve the luminous utilization factor of LED greatly.

After experiment showed, the reflecting LED display screen that adopts present embodiment, compare existing LED display,, reach almost negligible degree, thoroughly eliminated the granular sensation of image thus because the spacing between each LED emission light has been reduced an order of magnitude; Again original LED pointolite is expanded simultaneously and become the LED area source, therefore improved the aperture opening ratio of LED display greatly.Finally make the LED display picture displayed more clear and soft.

Embodiment two

The reflecting LED display screen and the embodiment one of present embodiment are basic identical, and different is, reflector 3 concave surfaces are a rotational circle cambered surface, and reflective membrane is posted on its surface; Substrate 1 adopts plastic plate, and reflector 3 is to be shaped with substrate 1 Integratively.

Embodiment three

The reflecting LED display screen and the embodiment one of present embodiment are basic identical, and different is that reflector 3 concave surfaces are an ellipse of revolution cambered surface; Substrate 1 adopts steel plate, sheet alloy or composited aluminum and plastic decking.

Obviously, can draw from the foregoing description, the concave surface of described reflector can also be the revolving conic surface that is formed by other conic section rotation; Described substrate can also adopt other sheet metal, nonmetal plate or composite board to make; Described substrate and reflector both can be shaped by Integratively, also can be shaped step by step; Embodiment can be any variation combination of aforesaid way.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. the reflecting LED display screen comprises substrate and LED, it is characterized in that: the one side of described substrate is shaped on spill reflector array, and the pin of described LED is installed on the center of described reflector bottom.

2. according to the described reflecting LED display screen of claim 1, it is characterized in that: the concave surface of described reflector is a revolving conic surface, and the surface of described concave surface is covered with reflective membrane, and the open face of described reflector is a square.

3. according to the described reflecting LED display screen of claim 2, it is characterized in that: described LED is the scattering Wide-angle LED, and its light emitting source is on the focus of described reflector.

4. according to the described reflecting LED display screen of claim 3, it is characterized in that: described revolving conic surface is the paraboloid of revolution, rotational circle cambered surface or ellipse of revolution cambered surface.

5. according to the described reflecting LED display screen of claim 4, it is characterized in that: the open outer side of described reflector is coated with dark acrylic board.