Teaching picture back illumination light touch light-emitting device and application method thereof
A back-illuminated, light-emitting device technology, applied in the field of teaching equipment, can solve the problems of unfavorable energy saving, large eye irritation, power consumption, etc., and achieve the effect of saving power and protecting eyesight
Inactive Publication Date: 2017-06-23
CHONGQING IND POLYTECHNIC COLLEGE
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Problems solved by technology
This kind of device is more irritating to the eyes of the observer when no picture is inserted, and consumes power, which is not conducive to eye health and energy saving
Method used
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[0021] Below, the present invention will be further described in conjunction with accompanying drawing and embodiment: Figure 1 to Figure 4 As shown, a light-touch light-emitting device illuminated on the back of a teaching picture includes a box body 10, a light-transmitting sheet 20, a charging socket 30, an LED light-emitting board 40, a rechargeable battery 50, and a switch trigger button 60; it is characterized in that the The top of the box body 10 is provided with a cooling hole 11, the front is provided with a light-transmitting sheet 20, and the front bottom is provided with a bar 12, and a groove 13 is provided between the bar 12 and the box body 10; The bottom of the box body 10 is provided with raised strips 14 and air intake holes 15, and the back side of the box body 10 is provided with a charging socket 30; the box body 10 is provided with an inner cavity 16; the inner cavity 16 is provided with LED light-emitting The board 40 , the rechargeable battery 50 and ...
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A teaching picture back illumination light touch light-emitting device comprises a box body, a light transmission piece, a charging socket, an LED light-emitting plate, a chargeable battery and a switch trigger button. The teaching picture back illumination light touch light-emitting device is characterized in that a heat dissipation hole is formed in the top of the box body; the light transmission piece is arranged on the front surface of the box body; a retaining strip is arranged on the front-lower portion of the box body; a groove is formed between the retaining strip and the box body; a micro switch groove is formed in the groove; the lower surface of the box body is provided with convex strips and air inlet holes; the charging socket is arranged on the back of the box body; the box body is internally provided with an inner cavity; the inner cavity is internally provided with the LED light-emitting plate, the chargeable battery and a micro switch; the switch trigger button of the micro switch is arranged in the micro switch groove; a scissor opening is formed between the switch trigger button and the front inclined surface of the box body; and a paper scrap is inserted in the scissor opening formed between the switch trigger button and the front inclined surface of the box body, so that the switch trigger button moves outwards and triggers the micro switch.
Description
technical field [0001] The invention relates to teaching tools, in particular to a touch-control light-emitting device illuminated on the back of a teaching picture. Background technique [0002] In the display of photos for foreign language or Chinese teaching and investigation and evidence collection, some pictures contain content that can only be displayed through light transmission, which requires a backlight device to realize the display of the content of the picture. In the past, the device often turned on the light first, and then inserted the picture. This device is more irritating to the observer's eyes when no picture is inserted, and consumes power, which is not conducive to eye health and energy saving. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention provides a touch-control light-emitting device illuminated on the back of teaching pictures. [0004] The technical scheme adopted by the present invention is...
Claims
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IPC IPC(8): F21V23/04F21V33/00F21Y115/10
CPCF21V23/04F21V33/0004
Inventor 李宏伟李思嘉
Owner CHONGQING IND POLYTECHNIC COLLEGE