Controllable LED lightness medical film observation lamp house

A light box and film technology, which is applied in the layout of electric lamp circuits, lighting and heating equipment, instruments, etc., can solve the problems of mercury contained in the light source, narrow use, and single function.

CN101303451BInactive Publication Date: 2010-06-23厦门伟然科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a medical film viewing light box with the controllable LED brightness and relates to a film viewing light box, which provides a portable medical film viewing light box with the controllable LED brightness, wherein, the medical film viewing light box has the functions of local super-bright display due to illumination strengthening, local rating, changing light color, and the like, the volume is smaller and thinner, and the LED luminous source replaces the daylight lamp luminous source and the fluorescent light luminous source. The medical film viewing light box of the invention is provided with a light box frame, a luminous source, a light source control circuit, a power supply, a backlight module and a caliper sliding mechanism, wherein, the backlight module, the light source control circuit and the caliper sliding mechanism are fixedly arranged on the light box frame; the backlight module is provided with a light guiding plate, a reflective layer, a surrounding reflective layer and a diffuser, wherein, the light guiding plate is provided with a dot structure; the reflective layer is arranged at the bottom face of the light guiding plate; the surrounding reflective layer is arranged around the light guiding plate; the diffuser is covered on the upper surface of the light guiding plate; the LED luminous source is arranged at the side face of the light guiding plate and respectively connected with the light source control circuit and the power supply; additionally, the caliper sliding mechanism is arranged on the upper surface of the diffuser.
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Description

technical field

[0001] The utility model relates to a film viewing light box, in particular to a medical film viewing light box with controllable LED brightness, soft and uniform light emission, no flickering, and lightness. technical background

[0002] The existing medical film observation light box is equipped with a light box frame, a light source, a light source control circuit and a power supply. The light source generally uses fluorescent lamps or cold cathode fluorescent lamps. Short, and can not adjust the observed luminosity and chromaticity according to the sensitivity coefficient of the film and the clarity of the image, and the film will be wasted due to underexposure, poor image quality, and poor observation effect during filming.

[0003] The utility model patent with the notification number CN2572425 discloses a medical X-ray film viewing light box, which includes a box body, a translucent material sheet, a tubular light source, and a light guide plate made o...

Examples

Embodiment Construction

[0021] see Figure 1~4 The embodiment of the present invention is provided with a light box frame 1, a caliper sliding mechanism (composed of a sliding mechanism 2, an upper caliper 3 and a lower caliper 4 with lights), a backlight module (composed of a diffuser 5, a light guide plate 6, a peripheral reflective layer 7 and reflective layer 8), fastening screw 9, LED light source 10, light source control circuit 11 and power supply (not shown in the figure). The backlight module, light source control circuit 11 and caliper sliding mechanism are fixed on the light box frame 1 . The diffusing sheet 5 adopts polyethylene terephthalate (PET) film, and the diffusing sheet 5 spreads out the light emission angle, increases the luminous area and improves the front luminance and expands the viewing angle. There is a dot structure on the light guide plate 6, and there are X-Y invisible squares on the light guide plate 6, respectively marked with X: 1, 2, 3, 4......; Y: A, B, C, D.  … T...