CN207246951U

CN207246951U - The anti-dazzle blackboard lightses of LED

Info

Publication number: CN207246951U
Application number: CN201721213466.5U
Authority: CN
Inventors: 潘丽君
Original assignee: Changzhou Yuan Zhi Hui Electronics Co Ltd
Current assignee: Changzhou Yuan Zhi Hui Electronics Co Ltd
Priority date: 2017-09-21
Filing date: 2017-09-21
Publication date: 2018-04-17
Anticipated expiration: 2027-09-21

Abstract

The utility model discloses a kind of anti-dazzle blackboard lightses of LED, including LED light bar, lamp body, end cap and diffuser, diffuser is located at the underface of lamp body, and by and lamp body, the tight fit of end cap forms optics cavity, reflective surface of the LED light bar inside lamp body and remote blackboard, the reflective surface is designed using asymmetric polarisation, so as to form the vertical illumination of high evenness on face to be illuminated, the light-emitting surface of LED light bar is staggered relatively with reflective surface and towards ceiling direction, without direct emergent ray, can be with the reduction dazzle of high degree, diffuser uses transparent PC or PMMA materials, light extraction efficiency with higher, included in control circuit and remove ripple（Without stroboscopic）Dedicated IC, to ensure fluctuation depth ＜ 1%, the lamps and lanterns arrangement in same classroom can use identical pattern of lighting, therefore lamps and lanterns layout has uniform, beautiful and generous advantage.

Description

The anti-dazzle blackboard lightses of LED

Technical field

The technical field of LED light is the utility model is related to, in particular to a kind of anti-dazzle blackboard lightses of LED.

Background technology

Blackboard has the function that raising classroom interactions' property and raising attention of student in teaching, in some light environments not , it is necessary to increase the brightness of blackboard using blackboard lights in the case of good, if the light that blackboard lights is irradiated on blackboard is uneven, Student and teacher are caused dazzling.

Utility model content

The utility model is intended to solve above-mentioned technical problem to a certain extent.

In view of this, the utility model provides a kind of anti-dazzle blackboard lightses of LED, and the anti-dazzle blackboard lightses of the LED have vertical equal Evenness height, anti-dazzle, without stroboscopic and colour rendering index it is high the characteristics of.

In order to solve the above-mentioned technical problem, the utility model provides a kind of anti-dazzle blackboard lightses of LED, passes through stent and smallpox Plate is fixed and parallel to blackboard, it includes LED light bar, lamp body, end cap and diffuser, it is characterised in that the diffuser is located at The underface of the lamp body, and optics cavity is formed by the tight fit with the lamp body, the end cap, the LED light bar is remote From blackboard set, and close to the lamp body medial surface formed reflective surface, the light-emitting surface of the LED light bar with it is described reflective Curved surface is staggered relatively, and the light direction of the light-emitting surface is towards ceiling.

Further, the distance of the center of the LED light bar to the starting point of the reflective surface is 20 ~ 30mm.

Further, the LED light bar includes multiple LED light sources arranged along lamp body length direction.

Further, the shady face of the LED light bar sets radiator.

Further, the radiator is connected along LED light bar length direction with the both ends of the lamp body.

Further, set in the cavity between the end cap and trim comprising the control circuit for removing ripple application-specific integrated circuit.

Further, the cross section curve of the reflective surface meets cubic curve equation y=ax³+bx²+ cx+d, x are reflector Radius, y are reflector height, wherein：20mm≤x≤80mm, 0.003≤a≤0.05, -4.25≤b≤- 0.6.65,28.5≤ C≤180, -876≤d≤- 265.

Further, the material of the lamp body is aluminium alloy.

Further, the reflective surface surface controls the matte surface between 0.75 ~ 0.88 for reflectivity.

Further, the material of the diffuser is transparent PC or PMMA materials.

The utility model has technical effect that：The anti-dazzle blackboard lightses of a kind of LED according to the present utility model, LED light bar are leaned on Nearly reflective surface is simultaneously partial to the side away from face to be illuminated, which is designed using asymmetric polarisation, so that in face to be illuminated The upper vertical illumination for forming high evenness, the light-emitting surface of LED light bar are staggered relatively with reflective surface and towards ceiling direction, nothing Direct emergent ray, can dramatically reduce dazzle, diffuser uses transparent PC or PMMA materials, different from traditional Frosted type diffuser, has the light extraction efficiency of higher compared with the latter, which has vertical illumination uniformity height, colour rendering The outstanding features such as good and light efficiency height, will not cause Faculty and Students dazzle to have no stroboscopic, be included in control circuit and remove ripple （Without stroboscopic）Dedicated IC, to ensure fluctuation depth ＜ 1%, the lamps and lanterns arrangement in same classroom can use identical pattern of lighting, And without the slant setting as traditional blackboard lamp, therefore lamps and lanterns layout has uniform, beautiful and generous advantage.

Brief description of the drawings

Fig. 1 is a kind of anti-dazzle blackboard lights overall structure figures of LED according to the present utility model；

Fig. 2 is a kind of anti-dazzle blackboard lights sectional views of LED according to the present utility model；

Fig. 3 is a kind of anti-dazzle blackboard lights light distribution curves of LED according to the present utility model；

Fig. 4 is a kind of anti-dazzle blackboard lights scheme of installation of LED according to the present utility model.

Wherein, 1-LED lamp bars；2- radiators；3- lamp bodies；4- control circuits；5- end caps；6- trims；7- diffusers；8- Lamp support；9- reflective surfaces；The starting point of 10- reflective surfaces.

Embodiment

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art It can be better understood from the utility model and can be practiced, but illustrated embodiment is not as the restriction to the utility model.

According to Fig. 1 and Fig. 2, base material of the aluminium alloy as lamp body 3 is selected, and according to cubic curve equation y=ax³+ bx²+cx+d（Wherein x is reflector radius, and y is reflector height, 20 mm≤x≤80mm, 0.003≤a≤0.05, -4.25 ≤ b≤- 0.6.65,28.5≤c≤180, -876≤d≤- 265）The cross section curve of 3 inside reflective surface 9 of lamp body is fitted, outside Sight face is through to installation site and the outer cross section curve for walking to determine aluminium section bar after line position be suitably laid out, aluminium section bar is by squeezing Press technique to obtain, required length is cut into after ageing treatment when progress 1-3 is small, when then small to aluminium section bar progress 0.5-1 Anodized.

Specific embodiment according to the present utility model, spliced using two identical reflective surfaces 9 inside lamp body and Into to meet installation and mitigating the needs of weight, the part that light reflection is had no substantial effect on to curved surface end is cut And additions and deletions, meet the requirement of blackboard or wall illumination more than 500lx in national standard GB50034.

LED light bar 1 includes multiple LED light sources arranged along radiator length direction, and LED light bar 1 will be fixed on radiator Upper 2, LED light bar 1 is fixed on radiator 2, and the both ends of radiator 2 are fixed on left end cap 51 and right end cap 52, and make light source The distance between starting point 10 of center and reflective surface is maintained between 20mm≤k≤30mm, the light-emitting surface of LED light bar 1 with Reflective surface 9 is staggered relatively, it is ensured that more preferable color developing, avoids directly being emitted light stimulus human eye, dramatically drop Low dazzle, lamp body 3 carry out anodized, rationally control the reflectivity of reflective surface, can also further reduce by reflecting Secondary dazzle caused by light, the LED light bar 1 of biasing and the reflective surface 9 of lamp body 3 are engaged, and can also generate asymmetric light distribution Distribution, realizes the offset of light distribution so that light is more distributed in the latter half of blackboard or wall, improves light profit With rate, it is further ensured that blackboard or wall have the vertical illumination of the more preferable uniformity.

Specific embodiment according to the present utility model, the general colour rendering index Ra of LED light source are more than 90, special colour rendering index In R9 be more than 80.

Control circuit 4 is installed in the cavity between end cap 5 and trim 6, then by transparent printing opacity made of PC Cover 7 is connected to lamp body 3 and end cap 5.

Specific embodiment according to the present utility model, comprising removing ripple in control circuit（Without stroboscopic）Application-specific integrated circuit, reduces frequency Dodge to negative effect caused by student eyesight health and mental health.

According to Fig. 3, it is contemplated that the distance from bottom of the blackboard or wall LED blackboard lightses are farthest, and the light of distribution is less, The light of reinforcement bottom can make light distribution overall on blackboard or wall to be illuminated more uniform.In the utility model, Overall optical plan realizes the asymmetric polarisation distribution of 0-180 ° of plane using indirect type reflective mechanism, and more light are thrown It is mapped to apart from farther blackboard bottom, reaches blackboard top and the bottom illumination approximation unanimously, and the light distribution of 90 ° of -270 ° of planes is more than 130 °, ensure that two blackboard lights middles do not have obvious shadow, while can be projected again to avoid part high angle scattered light black Plate or wall cause energy waste with exterior domain, and ensure to realize blackboard illumination uniformity >=0.8.

According to Fig. 4, lamp support 8 connects the outside of lamp body 3 and ceiling, first imports the light source file of blackboard lights Dialux illumination simulation softward carry out sunykatuib analysis, and according to sunykatuib analysis result determine the distance between blackboard lights and blackboard with And the setting height(from bottom) of blackboard lights.Preferably, whole blackboard region can be ensured well using two blackboard lights linear arrays Illumination requirement.For the blackboard of stock size, the distance between blackboard lights and blackboard can be controlled between 0.75-1 meters, peace Dress height control light-emitting surface on blackboard along 0.4-0.7 meters or so.

Embodiment described above is only the preferred embodiment to absolutely prove the utility model and being lifted, the utility model Protection domain not limited to this.The equivalent substitute or change that those skilled in the art are made on the basis of the utility model Change, within the scope of protection of the utility model.The scope of protection of the utility model is subject to claims.

Claims

1. a kind of anti-dazzle blackboard lightses of LED, fixed by stent and ceiling and parallel to blackboard, it include LED light bar, lamp body, End cap and diffuser, it is characterised in that the diffuser is located at the underface of the lamp body, and by with the lamp body, described The tight fit of end cap forms optics cavity, and the LED light bar is set away from blackboard, and is formed in the medial surface close to the lamp body Reflective surface, the light-emitting surface of the LED light bar and the reflective surface are staggered relatively, and the light direction of the light-emitting surface is towards day Card.

2. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the center of the LED light bar is to described reflective The distance of the starting point of curved surface is 20 ~ 30mm.

3. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the LED light bar is grown including multiple along lamp body Spend the LED light source of direction arrangement.

4. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the shady face of the LED light bar sets heat dissipation Body.

5. the anti-dazzle blackboard lightses of LED according to claim 4, it is characterised in that the radiator is along LED light bar length direction It is connected with the both ends of the lamp body.

6. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the cavity between the end cap and trim It is interior to set comprising the control circuit for removing ripple application-specific integrated circuit.

7. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the cross section curve of the reflective surface meets Cubic curve equation y=ax³+bx²+ cx+d, x are reflector radius, and y is reflector height, wherein：20mm≤x≤80mm, 0.003≤a≤0.05, -4.25≤b≤- 0.6.65,28.5≤c≤180, -876≤d≤- 265.

8. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the material of the lamp body is aluminium alloy.

9. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the reflective surface surface is reflectivity control Make the matte surface between 0.75 ~ 0.88.

10. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the material of the diffuser is transparent PC Or PMMA materials.