Light prompting device for distance between eyes and book of student during homework time

The utility model discloses a light prompting device for the distance between eyes and a book of a student during homework time. The light prompting device comprises a box serving as a main structure, wherein a long light source is arranged on the rear side in the box from top to bottom; the light s...

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Bibliographic Details
Main Author XU WEIQIAO
Format Patent
LanguageChinese
English
Published 13.04.2011
Subjects
ALARM SYSTEMS
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
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Summary:The utility model discloses a light prompting device for the distance between eyes and a book of a student during homework time. The light prompting device comprises a box serving as a main structure, wherein a long light source is arranged on the rear side in the box from top to bottom; the light source can be a long lamp tube or a point light source array; a group of horizontal thin plates with equal interval (1 to 2mm) are arranged on the front side in the box; a group of horizontal gaps through which horizontal lights can pass are formed among the group of horizontal thin plates; the highest gap in the group of horizontal gaps is 32cm away from the bottom of the box; and the upper end of a light emitting part of the light source is 1 to 2cm higher than the highest gap of the group of horizontal gaps, and the lower end of the light emitting part of the light source is 1 to 2cm lower than the lowest gap. When the light prompting device is operated, the light generated by the light source passes through the
Bibliography:Application Number: CN20102505127U