An outdoor LED advertising screen with dust removal and lightning protection
A technology for LED advertising screens and lightning protection, which is applied to electrical components, structural parts of electrical equipment, and cleaning methods using gas flow, etc. It can solve the problem of damage to electronic components, easy dusting of LED advertising screens, and inconvenient cleaning of the display screen, etc. problem, to achieve the effect of preventing damage, removing dust, and good lightning protection effect
Active Publication Date: 2021-05-14
广东华数科技有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that the surface of the LED advertising screen in the prior art is easy to dust, and the display screen is located at a high place, which is not easy to clean. The long-term dust accumulation not only affects the advertising display effect, but also reduces the heat dissipation efficiency of the display screen. In thunderstorm weather, if the power is not turned off in time, the lightning electrode is easy to cause damage to the internal electronic components, and a dust removal and lightning protection outdoor LED advertising screen is proposed.
Method used
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[0023] refer to Figure 1-4 , an outdoor LED advertising screen for dust removal and lightning protection, comprising an outer frame 2 and a display screen 1 arranged in the outer frame 2, a plurality of sound receiving grooves 3 are opened on the outer walls of both sides of the outer frame 2, and inside the sound receiving groove 3, There is a vibrating membrane 4 fixedly connected to the inner groove of the sound receiving groove 3, and the vibrating membrane 4 can produce vibrations with a fixed amplitude according to the volume. A piezoelectric ceramic 5 is fixedly connected to the inner groove wall of the sound receiving groove 3. An information functional ceramic material capable of converting mechanical energy into electrical energy. A vibrating block 6 is bonded to the center of the side of the vibrating membrane 4 close to the piezoelectric ceramic 5;
[0024] The upper position of each sound receiving groove 3 is provided with a cavity 7, and each cavity 7 is provid...
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The invention discloses an outdoor LED advertising screen for dust removal and lightning protection. A vibrating membrane is fixedly connected to the inner wall of the sound receiving groove, a piezoelectric ceramic is fixedly connected to the inner groove wall of the sound receiving groove, and a vibrating block is bonded to the center of one side of the vibrating membrane close to the piezoelectric ceramic . The advantage is that the present invention converts noise as energy, which is used for dust removal and heat dissipation on the surface of the display screen, improves the display effect of the advertising screen while saving energy, and uses the difference in propagation speed between lightning and thunder to Realize the judgment of lightning, and the control device cuts off the power supply of the LED advertising screen in time to prevent subsequent lightning from damaging the electronic components inside the LED advertising screen, and has a good lightning protection effect.
Description
technical field [0001] The invention relates to the technical field of outdoor display equipment, in particular to an outdoor LED advertising screen for dust removal and lightning protection. Background technique [0002] LED advertising is a form of new media advertising, a perfect combination of new media technology and outdoor advertising. LED advertisements are advertising words or pictures made of light-emitting diodes, such as the electronic large-screen advertisements we usually see on the street or some roadsides with colored lights and bright advertising words and signs, which use light-emitting diodes to form The large-area display screen composed of dot matrix modules or pixel units, combined with many modern high-tech technologies such as microelectronics, optics, and signal processing, has become the best carrier for outdoor release of commercial advertisements. [0003] At present, most LED advertising screens are installed on the outside of buildings or in ou...
Claims
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IPC IPC(8): G09F9/33G09G3/32B08B5/02B08B13/00H05K7/20
CPCB08B5/02B08B13/00G09F9/33G09G3/32G09G2330/027H05K7/20972
Inventor 李土发
Owner 广东华数科技有限公司