Light sparing device for fire-fighting emergency indicating lamp

Abstract

A fire-fighting emergency indicating lamp includes a housing, a back embedded box, a light guiding plate, a main circuit part, and a light sparing device for the fire-fighting emergency indicating lamp. The housing is one time molded by cold punching. The back embedded box is an injection moulding. The light sparing device for the fire-fighting emergency indicating lamp includes a light guiding body, a reflection matrix, back reflection film, light sparing film, an LED (light emitting diode) light source, side reflection film adhesive and an insulation adhesive tape; the LED light source is connected with the light guiding body through side reflection film adhesive, and the insulation adhesive tape is clamped and padded in the middle part; the light guiding body is processed by polymethyl methacrylate via one-time formation, the back side of the light guiding body is provided with the reflection matrix with a high reflection rate and is pasted with the back reflection film, a piece of light sparing film with high light transmittance is clung to the front face of the light guiding body, the remaining three faces of the light guiding body are pasted with the side reflection film adhesive; and the side face of the light guiding body is provided with an LED light source installation groove. The lamp has the advantages of a light weight, low energy consumption, high brightness, little light loss, high efficiency, convenience and rapidness in assembly and maintenance and the like.

Description

Technical field: [0001] The invention relates to the technical field of emergency lamps, in particular to a uniform light device for fire emergency sign lamps. Background technique: [0002] Traditional lighting sources use incandescent bulbs or fluorescent tubes, which have the disadvantages of high energy consumption, serious environmental pollution, and short lifespan. With the continuous development of science and technology, LED is widely used in the field of lighting as a new type of light source. However, because LED is a point light source, it is characterized by high brightness in the tube core and low brightness in the surrounding diffusion angle. If it is directly illuminated, it will produce strong halo and glare, which will cause obvious stimulation and discomfort to people's vision, and affect people's visual health. If the side lighting is used, only the brightness of the LED diffusion angle is used, which directly leads to serious light loss, uneven light tr...

AI Technical Summary

Problems solved by technology

[0002] Traditional lighting sources use incandescent bulbs or fluorescent tubes, which have the disadvantages of high energy consumption, serious environmental pollution, and short life.

With the continuous development of science and technology, LED is widely used in the field of lighting as a new type of light source. However, because LED is a point light source, it is characterized by high brightness in the tube core and low brightness in the surrounding diffusion angle.

If it is directly illuminated, it will produce strong halo and glare, which will cause obvious stimulation and discomfort to people's vision, and affect people's visual health

If the side lighting is used, only the brightness of the LED diffusion angle is used, which directly leads to serious light loss, uneven light transmission brightness, obvious bright spots, dark bands and glare on the luminous surface, unreasonable use of light effects, and thick lamps ( need spotlight space), bulky appearance, waste of material

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