CN203744011U

CN203744011U - LED blackboard lamp achieving uniform illumination

Info

Publication number: CN203744011U
Application number: CN201420016098.5U
Authority: CN
Inventors: 尹侠; 岑松原; 罗凤国; 顾喆涵; 金尚忠
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2014-01-08
Filing date: 2014-01-08
Publication date: 2014-07-30
Anticipated expiration: 2024-01-08

Abstract

The utility model discloses an LED blackboard lamp achieving uniform illumination and relates to an LED lamp and a blackboard illuminating lamp. The LED blackboard lamp achieving uniform illumination comprises a lamp bracket, a free-form surface reflection cover and an LED lamp tube, wherein the reflection cover is a free-form surface calculated according to the illumination requirement of a blackboard, and a specular reflection film adheres to the surface of the reflection cover; a shading plate (1), the reflection cover (2), a top plate (3) and an installing plate (7) are machined through sheet metal parts to form the lamp bracket, a lamp holder (8) is fixed to an installation slope (71) through installing holes (6), and the LED lamp tube (4) is fixed to the lamp bracket through the lamp holder (8). The LED blackboard lamp achieving uniform illumination can solve the problems that an existing blackboard lamp is low in illumination, illumination distribution is uneven, and glare exists and have the advantages of being capable of saving energy, convenient to maintain and the like.

Description

A kind of LED blackboard lights of realizing Uniform Illumination

Technical field

The utility model relates to LED field of light fittings, especially design a kind of efficient, the LED blackboard lights field of realizing uniform high illumination.

Technical background

Classroom blackboard illumination object is to provide good visual light environment, assurance Faculty and Students can write like a cork on blackboard, read content on blackboard, if there is the surface far from it of brightness each other, make vision often in the larger variation of luminance difference adapts to, for the visual fatigue that alleviates so cause, illumination profile should have certain uniformity.Some classroom is used Frame lamp as lighting, and the actual utilization ratio of light fixture is extremely low, and can produce very large dazzle; Some classroom has only been installed two fluorescent tubes on the upper edge of blackboard and has been used as blackboard lights, causes the on the low side and uniformity extreme difference of the illumination mean value of blackboard.

LED be called as the 4th generation light source, there is the features such as energy-saving and environmental protection, safety, life-span length, low-power consumption, low-heat, high brightness, waterproof, miniature, shockproof, easy light modulation, light beam are concentrated, easy maintenance, can be widely used in the fields such as various indications, demonstration, decoration, backlight, general lighting.Utilize the distribution curve flux of the LED light source lambert bodily form and the illumination requirement of blackboard surface, can obtain corresponding free form surface reflection shield, thereby form a kind of LED blackboard lights of realizing Uniform Illumination.This LED blackboard lights has low energy consumption, high illumination, high evenness, the features such as low dazzle.

Through the literature search of prior art is found, Chinese invention patent CN200710049769.2 has designed a kind of double-reflector blackboard lamp, two fluorescent tubes are got to light on blackboard by two fixing reflectors, due to the luminous characteristic of fluorescent tube full angle, much light directly enters human eye or is irradiated to ground, reflexes to human eye, shines into the significant wastage of dazzle and energy, and fitting structure more complicated, be unfavorable for practical application.

Utility model content

The purpose of this utility model is to provide a kind of high illumination for the deficiencies in the prior art, high evenness, and low cost, safeguards and LED blackboard lights easy to use.

A LED blackboard lights of realizing Uniform Illumination, comprises lamp bracket, free form surface reflection shield, LED fluorescent tube.By science, calculate the reflective cover type obtaining, can, when realizing high-light-energy utilization rate, make LED lamp on blackboard, form uniform illumination.On reflection shield, post the specular reflection film of high reflectance, can improve Luminaire efficiency, reduce cost of manufacture.Installing plate is the installation inclined-plane of 20 degree angles with vertical direction forming one towards reflection shield one side, and installation has two installing holes for fixed lamp-socket on inclined-plane.LED fluorescent tube is fixed on lamp bracket by lamp socket, and its light emitting anger is less than 180 degree, and light-emitting area is towards reflection shield, and inclined-plane is parallel with installing, in vertical direction with the angle of 20 degree.Reflection shield is fixed on by panel beating in the middle of light barrier and top board, posts the specular reflection film of high reflectance on it.Shadow shield is connected with the end of reflection shield by panel beating, parallel with top board, and width is about 1/2 of top board.On lamp plate (3), there are two installing holes (6), for fixing and suspension blackboard lights, and form outside line passage.

The utility model has following beneficial effect than prior art:

(1) by carrying out replace fluorescent lamps pipe with LED fluorescent tube, because its lighting angle is less than 180 degree, dazzle value can be reduced to extremely low value, can play the effect of protection eyes, and energy-conserving and environment-protective, be convenient to safeguard and use

(2), according to the distribution curve flux of the approximate lambert's body of LED fluorescent tube, the reflection shield calculating by science, can make LED blackboard lights form the Illumination Distribution of high evenness, and good visual light environment can be provided.

Accompanying drawing explanation

Fig. 1 is front view of the present utility model

Fig. 2 is the left view of Fig. 1

Fig. 3 is the top view of Fig. 1

Fig. 4 is the cutaway view of LED fluorescent tube in Fig. 1

The specific embodiment

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

As shown in Figure 1, a kind of LED blackboard lights of realizing uniform illumination, comprises lamp bracket, free form surface reflection shield, LED fluorescent tube; Shadow shield 1 and reflection shield 2, top board 3 and installing plate 7 are processed to form lamp bracket by sheet metal component, and lamp socket 8 is installed on inclined-plane 71 by being fixed on by installing hole 6, and LED fluorescent tube 4 is fixed on lamp bracket by lamp socket 8.

Whole blackboard illuminator consists of two above-mentioned LED blackboard lightses, LED fluorescent tube be about the T8 fluorescent tube of 1200mm for length.The installation of LED blackboard lights: two lamps are at a distance of 640mm left and right, and lamp bracket distance from top and exiting surface are respectively 450mm and 400mm apart from edge on blackboard, and reflection shield 2 is installed towards blackboard, and two lamps are all 320mm to blackboard distance between center line.LED fluorescent tube is fixed on lamp socket by lamp socket, and light-emitting area 41 is towards reflection shield 2, and inclined-plane 1 is parallel with installing, in vertical direction with the angle of 20 degree.

By standard classroom, be example: standard blackboard area 1.2*3 rice, use LED blackboard lights 2*35W of the present utility model, blackboard illumination is on average greater than 600Lx, and the uniformity is greater than 0.8.

Claims

1. a LED blackboard lights of realizing uniform illumination, it is characterized in that shadow shield (1) and reflection shield (2), top board (3) and installing plate (7) panel beating form lamp bracket, lamp socket (8) is fixed on installing plate by screw (6), and LED fluorescent tube (4) is fixed on lamp bracket by lamp socket (8).

2. LED blackboard lights according to claim 1, is characterized in that installing plate (7) forms the installation inclined-plane (71) of 20 degree angles towards reflection shield (2) and vertical direction, install on inclined-plane and have two installing holes (6) for fixed lamp-socket.

3. LED blackboard lights according to claim 1, it is characterized in that LED fluorescent tube (4) is fixed on lamp bracket by lamp socket (8), its light emitting anger is less than 180 degree, light-emitting area (41) is towards reflection shield (2), inclined-plane (71) is parallel with installing, in vertical direction with the angle of 20 degree.

4. LED blackboard lights according to claim 1, is characterized in that reflection shield (2) is fixed on light barrier (1) by panel beating and top board (3) is middle, posts the specular reflection film of high reflectance on it.

5. LED blackboard lights according to claim 1, is characterized in that shadow shield (1) is connected with the end of reflection shield (2) by panel beating, and parallel with top board (3), width is about 1/2 of top board.

6. LED blackboard lights according to claim 1, is characterized in that there are two installing holes (6) on lamp plate (3), for fixing and suspension blackboard lights, and forms outside line passage.