Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Thermal protection system of LED backlight light bar

A LED backlight and thermal protection technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of high power, large heat dissipation, and poor ventilation of LCD screens, so as to reduce the probability of burning and heat generation Effect

Pending Publication Date: 2021-12-07
QINHUANGDAO YUANZHOU INDAL GAS +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It can be understood that the power of the LED backlight is relatively large, and the heat dissipation is also relatively large, but the heat dissipation area is limited, and the ventilation of the encapsulated LCD screen is also poor.
After the user watches for a long time, if the heat of the LED lamp beads cannot be dissipated in time, there is a risk of being burned out
Burned-out lamp beads are common on TVs with a long service life, and these burnt-out lamp beads will continue to burn out repeatedly after replacement, resulting in high repair costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thermal protection system of LED backlight light bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of this application clearer, the following in conjunction with the attached figure 1 And embodiment, this application is described in further detail. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0034] The embodiment of the present application discloses a thermal protection system for an LED backlight strip. refer to figure 1 , the thermal protection system of the LED backlight strip is mainly applied to the LED backlight strip 1, which includes a voltage detection unit 2, a processing control unit 3, a drive unit 4 and a plurality of temperature control switches 5, so that the LED backlight strip 1 When the temperature of the lamp bead 6 is too high, the lamp bead 6 is protected to reduce the probability of the lamp bead 6 being burnt out.

[0035] Specifically, there are multiple LED backl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a thermal protection system of an LED backlight light bar. The thermal protection system comprises a voltage detection unit, a processing control unit, a driving unit and a plurality of temperature control switches, wherein the temperature control switch is used for being connected with a lamp bead on the LED backlight lamp bar in parallel and is closed when the temperature of the lamp bead is higher than a preset temperature value; the voltage detection unit is used for detecting the voltage of all lamp beads on the LED backlight lamp bar in real time and outputting a voltage detection signal; the processing control unit is used for outputting a control signal when the voltage value reflected by the voltage detection signal is reduced; and the driving unit is used for reducing the size of a driving current for driving the LED backlight light bar to emit light when receiving the control signal. When the temperature of a certain lamp bead exceeds a preset temperature value, the corresponding temperature control switch can be switched on, so that the lamp bead is short-circuited. When the temperature of the lamp bead reaches the preset temperature value, the processing control unit can control the driving unit to reduce the driving current so as to reduce the heating value of the lamp bead and further reduce the probability that the lamp bead is burnt down.

Description

technical field [0001] The present application relates to the field of backlight light strips, in particular to a thermal protection system for LED backlight light strips. Background technique [0002] Generally, the light source displayed by the liquid crystal display comes from the LED backlight strip inside the liquid crystal display. The number of LEED backlight strips installed inside each LCD depends on the size of the LCD. Usually, at least two LED backlight strips are arranged inside the LCD screen. Wherein, each LED backlight strip is composed of multiple LED lamp beads connected in series. [0003] It can be understood that the power of the LED backlight is relatively large, and the heat dissipation is relatively large, but the heat dissipation area is limited, and the ventilation of the liquid crystal display screen after packaging is also poor. After the user watches for a long time, if the heat of the LED lamp beads cannot be dissipated in time, there is a ri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G09G3/36
CPCG02F1/133612G09G3/36G09G2330/04
Inventor 崔月雷张是阳朱利兵
Owner QINHUANGDAO YUANZHOU INDAL GAS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com