Adjustable blackboard lamp without direct glare

Abstract

The invention relates to the field of blackboard illumination lamps, and discloses an adjustable blackboard lamp without direct glare. The adjustable blackboard lamp comprises a lamp shell, reflectors and lamp holders, wherein the lamp holders are arranged in the lamp shell and are used for mounting lamp tubes; and the reflectors are mounted in the lamp shell. The adjustable blackboard lamp is characterized in that the mounting region of the center of each lamp tube is close to one end, far away from a blackboard, of the corresponding reflector; and the mounting region of the center of the lamp tube is within the range of 17%-70% of total height of the corresponding reflector, and is within the range of 18%-50% of total width of the corresponding reflector. The adjustable blackboard lamp without direct glare has the beneficial effects that the reflection angles of projection light rays are changed by the technical scheme of the invention; the adjustable blackboard lamp is particularly suitable for the field of blackboard lamps; the glare value can be reduced to an extremely low value; the effect of protecting eyes can be realized; energy conservation and environment protection are realized; the maintenance and the use are facilitated; the lamp is obtained by scientific calculation and practice; the illuminance of the blackboard can reach above 700 Lx; the uniformity of illuminance can reach above 80%; and an excellent vision light environment can be provided.

Description

technical field [0001] The invention relates to the field of blackboard lighting lamps, in particular to an adjustable blackboard lamp without direct glare. Background technique [0002] Due to the upgrading of lighting technology standards and the popularization of special lighting products for blackboards, blackboard lighting has become an indispensable special lighting for classroom lighting. The diversification of blackboard types and subdivision have led to more types of blackboards. Now blackboards can be divided into fixed blackboards, left and right movable blackboards, up and down movable blackboards, blackboards embedded with LCD TVs or projection terminal displays, etc. At present, it is difficult for most blackboard lamps to comprehensively meet the lighting needs of different blackboards. The range of 0-0.45 meters along the writing surface of the blackboard is often the range for centralized installation of multimedia terminals such as short-focus projectors an...

AI Technical Summary

Problems solved by technology

At present, it is difficult for most blackboard lamps to comprehensively meet the lighting needs of different blackboards. The range of 0-0.45 meters along the writing surface of the blackboard is often the range of centralized installation of multimedia terminals such as short-focus projectors and long-focus projector screens.

Often due to the influence of the position of the projector and the projection terminal, the blackboard lamps cannot meet the installation conditions, resulting in a lack of lighting indicators or even substandard lighting

[0003] Due to flaws in the structure and installation of most blackboard lamps, blackboard lamps often cause unacceptable glare to teachers, which can easily cause eye soreness and tearing, etc. Working under strong glare for a long time will accelerate eye fatigue and reduce work efficiency, and even lead to adverse reactions such as vision loss

[0004] In addition, the wiring of the power cord of most blackboard lamps is often complicated. It is necessary to disassemble the lamp to complete a series of operations such as threading, wiring, and reassembly before the power cord of the lamp can be connected. The installation efficiency is low.

[0005] At present, the adjustment of blackboard lights is often done by experienced personnel, basically relying on feeling without reference, so it is difficult to ensure the lighting quality of blackboard lights in batch debugging, and there is a lack of conditions for standardized operations

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