Reflective device for inner light box

Abstract

The invention discloses a reflective device for an inner light box. The reflective device is arranged below light tubes and used for uniformly projecting light rays directed by the light tubes to a showing picture of the light box through multiple diffuse reflections. The reflective device comprises a plurality of reflective plate units, wherein the reflective plate units are connected in sequence, each reflective plate unit respectively corresponds to one light tube, each reflective plate unit is in a multi-rhombus shape and is provided with a plurality of reflective surfaces which are continuously bent, and each reflective surface has an angle; and each reflective plate unit comprises a first reflective part, a second reflective part and a reflective sharp corner, wherein the first reflective part and the second reflective part are symmetrically arranged along the longitudinal axis of the light tube, and the reflective sharp corner is positioned just below the light tube and raised toward the light tube. According to the reflective device for the inner light box, the illuminance of the showing picture can be increased and is more uniform, the phenomenon of rib patterns is avoided, the size of the light box can be further reduced, lighting energy consumption is reduced, and the light utilization rate is increased.

Description

technical field [0001] The invention relates to a reflective device, in particular to a reflective device for a light box with internal lighting. Background technique [0002] The inventor of the present invention has long been committed to the research of the field of light box lighting, devoted himself to the research and development of the use of the light box light source, and successively made various improvements to the reflective system inside the light box. [0003] The invention application with publication number CN 101739916A discloses an integral pull-down reflector system for advertising light boxes. The reflector device in the pull-down reflector system includes a plurality of intermediate reflectors, first side reflectors, and second side reflectors, wherein the first side reflectors and the second side reflectors Plates are used to connect to both ends of the plurality of intermediate reflective plates. The middle reflector is formed by bending a whole piec...

AI Technical Summary

Problems solved by technology

[0005] However, in the second scheme, since there are multiple reflective sections parallel to the light-receiving surface in the reflective surface of the continuous steps, most of these parallel reflective sections do not participate in the primary reflection of light, so the parallel reflective sections The corresponding light-receiving surfaces are all low-brightness areas, resulting in rib patterns in the light box, which greatly affects the visibility and aesthetics of the light box

At the same time, since the above scheme mainly increases the brightness of the light-receiving surface through the secondary reflection of light, the light reflectivity is poor, and the light utilization rate is not ideal, resulting in unnecessary light loss

On the other hand, due to considerations of installation space and manufacturing costs, the currently used light boxes have increasingly strict requirements on the thickness of the light boxes, that is, they are gradually developing towards lighter and thinner light boxes. Therefore, if the above-mentioned stepped reflectors continue to be used, the The phenomenon of rib pattern is more obvious, resulting in unsatisfactory practicality

[0006] In order to overcome the above-mentioned defects, how to design a reflective device for the light box with internal lighting, so as to eliminate the phenomenon of uneven rib pattern formed on the picture of the light box with internal lighting (backlight source), and under the same lighting index, ensure that the internal lighting in the advertising industry The energy consumption per square meter of light box equipment is the best, which is a problem that the industry needs to solve urgently

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