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Lighting device

A technology of lighting equipment and light-emitting modules, which is applied in lighting and heating equipment, mechanical equipment, lighting devices, etc., can solve the problems that are almost impossible, weak lighting, and uniform lighting are no longer possible, and achieve cost-effective and simple installation Effect

Inactive Publication Date: 2015-07-01
奥斯兰姆有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the case of displays with luminous surface sizes with a diagonal of more than 12 inches, the problem arises that uniform illumination of the entire surface is no longer or hardly possible
Especially in the center of the display there will be weaker illumination than in the rest of the screen, so a non-uniform radiation characteristic will be observed
In addition, it is expensive to manufacture lighting devices of different sizes with conventional production facilities for lighting devices
Fabrication of flat lighting fixtures presents further difficulties with increasing size

Method used

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Examples

Experimental program
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Embodiment Construction

[0063] figure 1 A schematic diagram showing a top view of a quadrangular light-emitting surface 100 according to an embodiment. The quadrilateral light-emitting surface (rectangular light-emitting surface here) has side edges a, a g , b, b g . In principle, the quadrangular luminous area can also be configured as a trapezoid, square or parallelogram. figure 1The quadrilateral light-emitting surface in is composed of three light-emitting modules. The three lighting modules comprise a first lighting module LM1 having a triangular face with a side edge b1 of height h1 and a corner point E1 . The first light emitting module LM1 is an isosceles triangle. Here, b=b1. Here at side edge b g The corner point E1 of the first light emitting module LM1 exists on . Corner point E1 will side edge b g split equally. The first luminous module LM1 is combined with two further luminous modules LM2 and LM3 in combination, so that a quadrangular, here rectangular, luminous area results....

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Abstract

The invention relates to a lighting device with a quadrangular lighting surface, wherein the quadrangular lighting surface has a first lateral edge a and an opposing lateral edge ag, wherein the quadrangular lighting surface has a second lateral edge b and an opposing lateral edge bg, wherein the quadrangular lighting surface is constructed modularly of at least a first lighting module and further lighting modules. The at least one first lighting module is triangular, wherein the base surface of the first lighting module has a lateral edge b1 and a vertex E1 opposing this lateral edge b1, and wherein a connecting path between the vertex E1 and an intersection point L1 of a normal line with the lateral edge b1 is a height h1 of the first lighting module, where 0 < h1 <= a and b = b1.

Description

technical field [0001] The invention relates to a lighting device. Background technique [0002] Displays such as those used in monitors must be trans-illuminated or back-illuminated in the case of liquid crystal displays (LCDs) which do not emit light themselves. For this purpose cold cathode lamps are usually used or, within the context of the miniaturization and production of flat screens, flat light guides are used. The planar light guides as luminous surfaces usually consist of transparent plastics (eg PMMA, acrylic, etc.) and are supplied with light on the sides, for example by means of light-emitting diodes (LEDs). Especially in the case of displays with luminous surface sizes having a diagonal of more than 12 inches, the problem arises that uniform illumination of the entire surface is no longer or hardly possible. In particular, weaker illumination occurs in the center of the display than in the rest of the screen, so that a non-uniform radiation characteristic is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00
CPCG02B6/0078G02B6/008F21K9/20F21K9/60F21K9/61F21Y2115/10G02B6/0005G02B6/0001
Inventor A.施蒂希
Owner 奥斯兰姆有限责任公司