Portable eye protection table lamp with light emitting surface capable of being folded or unfolded

Abstract

The invention discloses a portable eye protection table lamp with the light emitting surface capable of being folded or unfolded. The portable eye protection table lamp comprises a shell, a shell separation part, a lithium battery, a rolling shaft device, an LED light source module, a light guide rod, a diffusion film and a folding or unfolding device, wherein the lithium battery is fixed at the bottom of the shell; the LED light source module is fixed in the center of the rolling shaft device; the light guide rod is fixed on the LED light source module; the diffusion film is wound on the outer side of the rolling shaft device; one side of the diffusion film is fixed on a rolling shaft, and the other side of the diffusion film is fixed to the shell separation part; and one end of the folding or unfolding device is fixed on the shell, and the other end of the folding or unfolding device is fixed to the shell separation part. When not in use, the table lamp is compact and convenient to carry. When in use, the shell separation part is pulled up until the folding or unfolding device is unfolded, and the large light emitting surface is matched with the LED light source module with the certain power and the low blue light and the light guide rod, so that the relatively large irradiation range and luminous flux can be ensured, the relatively low glare is guaranteed, and the purposes of portability and eye protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of lamps, and particularly relates to a portable eye protection desk lamp with a retractable light-emitting surface. Background technique [0002] The development of non-imaging optics has made the efficiency of the collimating lens reach more than 90%, and the light exit angle can be close to the theoretical minimum value. This makes it possible to use light guide rods and diffusion films with smaller diameters to achieve uniform light output. [0003] Glare refers to a visual phenomenon in which there is an uncomfortable brightness distribution or strong brightness contrast in the visual range of the human eye, which leads to physiological discomfort of the human eye and reduced visual resolution. The glare of desk lamp lighting can be expressed by the glare evaluation function UGR, Its expression is: . [0004] in, Represents the ambient background brightness; L represents the brightness of each lum...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a portable eye-protecting desk lamp with retractable light-emitting surface, which effectively solves the problem of large contradiction between portability and light-emitting surface, so that the desk lamp can provide greater illumination while satisfying portability scope

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