CN206224935U

CN206224935U - A kind of novel mixed light formula LED display

Info

Publication number: CN206224935U
Application number: CN201621188415.7U
Authority: CN
Inventors: 李明
Original assignee: SHENZHEN ELITE PHOTOELECTRON CO Ltd
Current assignee: SHENZHEN ELITE PHOTOELECTRON CO Ltd
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2017-06-06
Anticipated expiration: 2026-11-04

Abstract

The utility model discloses a kind of novel mixed light formula LED display, it includes circuit board and the light mixing plate being placed on circuit board, circuit board is provided with the LED chip of array arrangement, the bottom surface of light mixing plate is provided with and the one-to-one accommodating cavity of LED chip, the upper surface of light mixing plate has multiple continuous ladders, the ladder in left side from a left side, gradually increase by the right side, and the ladder on right side from the right side, gradually increase by a left side, and the ladder of the left and right sides is symmetrical arranged.The utility model is not in the case where luminescence unit density is increased, set up stair-stepping light mixing plate, the curved surfaces of the accommodating cavity of the bottom surface that the light that LED chip sends passes through light mixing plate enter light mixing plate after being reflected, and projected by the upper surface of light mixing plate, so that rising angle increase of the light that sends of LED chip at the upper surface of light mixing plate, and then causing that the light intensity of the central area of LED chip dies down, then the light intensity of its fringe region is relative strengthens, so as to greatly reduce dazzle and dazzling sense.

Description

A kind of novel mixed light formula LED display

Technical field

The utility model is related to LED lamp technical field, specifically a kind of LED display of light-mixed type.

Background technology

LED（Lightemittingdiode, light emitting diode）, it is a kind of by controlling the aobvious of semiconductor light-emitting-diode Show mode, by gallium（Ga）With arsenic（As）, phosphorus（P）, nitrogen（N）, indium（In）The diode that is made of compound, when electronics and hole are answered Visible ray can be given off during conjunction, thus can be used to be made light emitting diode.LED with its brightness it is high, operating voltage is low, power consumption Small, maximization, long lifespan, impact resistance and steady performance are in widespread attention and developed rapidly.Before the development of LED Scape is extremely wide, reliable just towards more high brightness, more high weather resistance, luminous density higher, uniformity of luminance higher Property, panchromaticization direction are developed.And LED display is also because it can arbitrarily extend, and realize seamless spliced, the luminous flux attenuation slow life-span Long the advantages of and be widely used in stadiums, business application, bank, card Securities, postal service, harbour, market, station, postal service, electricity News, office, monitoring, school, dining room, hotel, amusement, etc. different outdoor locations advertising.

In existing LED display, the size of the LED chip in its LED light source array is typically less than or equal to adjacent LED Chip chamber away from half, i.e. region between two adjacent LEDs chip will be generally greater than or equal to the size of LED chip itself.Cause This, when the LED display is lighted, the zone line that LED chip is often presented is brighter, and its fringe region is dark, or even There is the defect of non-luminous dark space outside light-emitting zone.Drawbacks described above can cause the picture brightness of LED display uneven, Picture display effect is poor etc.；Further, since light-emitting zone is often focused near the central point of the luminescence unit, easily produce Raw dazzle, user can produce dazzling sense when watching.

Utility model content

Therefore, for above-mentioned problem, the utility model proposes a kind of novel mixed light formula LED display, to existing aobvious The internal structure of display screen is improved, and sets up the light mixing plate of a particular design, makes it that light is improved on the basis of cost is not increased Performance is learned, to solve the deficiency of prior art.

In order to solve the above-mentioned technical problem, the technical scheme that the utility model is used is that a kind of novel mixed light formula LED shows Display screen, including circuit board and the light mixing plate that is placed on circuit board, circuit board are provided with the LED chip of array arrangement, mixed light The bottom surface of plate is provided with has multiple continuous ladders with the one-to-one accommodating cavity of LED chip, the upper surface of light mixing plate, left side Ladder from left and the right side is gradually increased, the ladder on right side from right and a left side is gradually increased, and the left and right sides ladder with center position Axis centered on axial symmetry set, namely symmetrical both sides ladder it is highly identical.

Further, the surface of each ladder of the upper surface of the light mixing plate is parallel with the bottom surface of light mixing plate.

Preferably, the accommodating cavity of the bottom surface of the light mixing plate is ellipsoidal configuration, and its cross section in the horizontal direction is Ellipse, it is demonstrated experimentally that when accommodating cavity is ellipsoidal configuration, the light that LED chip sends is at the upper surface of light mixing plate Rising angle is maximum, so as to improve the optical property of LED display.

Further, the surface of the LED chip is pasted with light transmission film, and the light transmission film is located at circuit board and mixed light Between plate.The light transmission film preferably uses PC（Makrolon）Film or PMMA（Polymethyl methacrylate）Film, it is preferred that thoroughly Thickness≤the 0.15mm of optical thin film.

The utility model, in the case where luminescence unit density is not increased, sets up stair-stepping mixed light by such scheme Plate so that when LED display works, the curved surfaces of the accommodating cavity of the bottom surface that the light that LED chip sends passes through light mixing plate enter Enter light mixing plate after row refraction, and projected by the upper surface of light mixing plate so that upper table of the light that LED chip sends in light mixing plate Rising angle increase at face, and then cause that the light intensity of the central area of LED chip dies down, then the light intensity of its fringe region is relative Enhancing, so as to greatly reduce dazzle and dazzling sense；Therefore, the utility model is not in the case where cost and radiating difficulty is increased Substantially increase display screen optical property.In addition, the setting of light transmission film so that the light of LED chip is thin by printing opacity first Film is reflected, and the inwall for then entering back into accommodating cavity carries out second refraction, further increases its upper table in light mixing plate Rising angle at face, so as to further enhancing the optical property of whole LED display.The utility model simple structure, easily In industrialization production and realization, with good practicality.

Brief description of the drawings

Fig. 1 is the section view of LED display of the present utility model；

Fig. 2 is the exploded view of LED display of the present utility model；

Fig. 3 is the three-dimensional exploded view of LED display of the present utility model；

Fig. 4 is the schematic diagram of the bottom surface of light mixing plate of the present utility model.

Specific embodiment

The utility model is further illustrated in conjunction with the drawings and specific embodiments.

A kind of novel mixed light formula LED display of the present utility model, referring to Fig. 1-Fig. 4, a kind of novel mixed light formula LED shows Screen, including circuit board 100 and the light mixing plate 200 that is placed on circuit board 100, circuit board 100 are provided with the LED of array arrangement Chip 101, the bottom surface of light mixing plate 200 is provided with and the one-to-one accommodating cavity 201 of LED chip 101, the upper surface of light mixing plate 200 With multiple continuous ladders, the ladder in left side from a left side, gradually increase by the right side, and the ladder on right side from the right side, gradually increase by a left side, and left The ladder of right both sides axial symmetry centered on the axis of center position is set, namely the ladder of symmetrical both sides height phase Together.Wherein, the surface of each ladder of the upper surface of light mixing plate 200 is parallel with the bottom surface of light mixing plate 200.

In addition, referring to Fig. 4, the accommodating cavity 201 of the bottom surface of light mixing plate 200 is ellipsoidal configuration, its horizontal stroke in the horizontal direction Section is ellipse, it is demonstrated experimentally that when accommodating cavity 201 is ellipsoidal configuration, the light that LED chip 101 sends is in mixed light Rising angle at the upper surface of plate 200 is maximum, so as to improve the optical property of LED display.

In the present embodiment, the surface of LED chip 101 is also pasted with light transmission film, the light transmission film be located at circuit board 100 with Between light mixing plate 200.The light transmission film can select PC（Makrolon）Film or PMMA（Polymethyl methacrylate）Film, its In, the thickness≤0.15mm of light transmission film.When LED display works, the light that LED chip 101 sends is thin by printing opacity first Film refraction after, then the bottom surface for passing through light mixing plate 200 accommodating cavity 201 ellipsoidal configuration curved surfaces reflected after enter Light mixing plate 200, and projected by the upper surface of light mixing plate 200 so that upper table of the light that LED chip 101 sends in light mixing plate 200 Rising angle at face increases, and then causes that the light intensity of the central area of LED chip 101 dies down, then the light intensity of its fringe region Relative enhancing, so as to greatly reduce dazzle and dazzling sense.

Although specifically showing and describing the utility model with reference to preferred embodiment, those skilled in the art should This is understood, not departing from the spirit and scope of the present utility model that appended claims are limited, in form and details On the utility model can be made a variety of changes, be protection domain of the present utility model.

Claims

1. a kind of novel mixed light formula LED display, it is characterised in that：Including circuit board and the mixed light being placed on circuit board Plate, circuit board is provided with the LED chip of array arrangement, the bottom surface of light mixing plate be provided with the one-to-one accommodating cavity of LED chip, mix The upper surface of tabula rasa has multiple continuous ladders, and the ladder in left side from a left side, gradually increase by the right side, and the ladder on right side is left from the right side Gradually increase, and the ladder of the left and right sides is symmetrical arranged.

2. novel mixed light formula LED display according to claim 1, it is characterised in that：The upper surface of the light mixing plate The surface of each ladder is parallel with the bottom surface of light mixing plate.

3. novel mixed light formula LED display according to claim 1, it is characterised in that：The appearance of the bottom surface of the light mixing plate Chamber is put for ellipsoidal configuration, its cross section in the horizontal direction is ellipse.

4. novel mixed light formula LED display according to claim 1, it is characterised in that：The surface of the LED chip attaches There is light transmission film, the light transmission film is located between circuit board and light mixing plate.

5. novel mixed light formula LED display according to claim 4, it is characterised in that：The light transmission film uses PC films Or PMMA film.

6. the novel mixed light formula LED display according to claim 4 or 5, it is characterised in that：The thickness of the light transmission film ≤0.15mm。