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Indoor SMD LED equipped for outdoor usage

A technology for LED display and outdoor operation, which is applied to record carriers used in machines, applications, household appliances, etc., and can solve the problems of damaging the integrity of devices, difficulty in ensuring, and difficulty in releasing heat

Inactive Publication Date: 2016-05-11
LIGHTHOUSE TECH LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this approach is that the many cracks or other openings in the cover compromise the integrity of the overall device by allowing, for example, water to reach the interior of the cover, and it is difficult to ensure that these cracks or openings are removed far earlier than desired for the product. will not develop in the hood during service life
In addition, the heat generated during the use of SMD LEDs is difficult to dissipate given the complete sealing required, and continuous use of SMD LEDs in such an elevated temperature environment will lead to a shortened lifetime of the SMD LEDs

Method used

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  • Indoor SMD LED equipped for outdoor usage
  • Indoor SMD LED equipped for outdoor usage
  • Indoor SMD LED equipped for outdoor usage

Examples

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Embodiment Construction

[0024] According to the invention, SMD LEDs are encapsulated by vacuum forming and / or cap molding sheets which are held by evacuation above a printed circuit board (PCB) on which the LEDs are mounted. exist figure 1 In the example shown, the device (in this case the LED display 1 ) is shown before being covered by a vacuum-formed and / or mask-molded sheet. figure 1 The device shown in is designed as an indoor device, i.e. it will not itself be capable of outdoor use as it cannot withstand the outdoor environment. The LED display 1 has a plurality of LED3 on a PCB2.

[0025] The sheet can be made of plastic (eg polycarbonate plastic), silicon or similar. The sheet can be transparent or translucent, can have one or more colors, and / or can be embossed with one or more patterns that can help direct light. The sheet may have at least one UV resistant layer.

[0026] The sheet may be a vacuum formed sheet, a mask molded sheet or a vacuum formed and mask molded sheet.

[0027] As...

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Abstract

An SMD LED that is designed for indoor use is equipped for outdoor use by encapsulation in a vacuum-forming and / or cover molding covering, which is placed over the indoor SMD LED and is formed thereon by evacuation. The thus-equipped indoor SMD LED is thereby usable in the same manner as a more expensive and ruggedly designed outdoor SMD LED.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Patent Application No. 62 / 077,044, filed November 7, 2014, which is hereby incorporated by reference. technical field [0003] The present invention relates to SMD (Surface Mount Device) LEDs (Light Emitting Diodes) originally designed for indoor use, but specially equipped for outdoor use. Background technique [0004] As is well known, light emitting diodes (LEDs) are solid state semiconductor components that emit light when supplied with an appropriate electrical current. LEDs are known to have high efficiency and long life, which has led to an increasing number of applications of LEDs, where traditional incandescent light bulbs were previously used. [0005] SMD LEDs consist of a large number of individual LEDs mounted on the surface of a circuit board. The circuit board is usually a printed circuit board which is flat and is used to properly electrically connect the LEDs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33H01L33/52H01L33/56
CPCG09F9/33H01L33/52H01L33/56B29C70/78B29K2083/00B29L2031/3481B29K2105/20G06K7/10356G06K19/0707
Inventor 陈居礼
Owner LIGHTHOUSE TECH LTD