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Introduzione:
At the intersection of modern technology and advertising media, LED display has become the product of choice for all kinds of indoor and outdoor information display with its high brightness, high definition, energy saving and environmental protection.
However, with its wide application, the safety performance of LED display is also increasingly concerned, especially its flame retardant ability. This article will take you to understand the flame retardant knowledge of LED display, for the safe use of LED display.
LED display fire hazards and prevention
The LED display itself will heat up when working, if the heat dissipation is not sufficient or long time working in a high temperature environment, constitute the LED display of integrated circuits and other electronic components will be very easy to work abnormally, and then cause a fire. In recent years, LED display screen fire and fire accidents occur from time to time, the specific cause of the fire is caused by a variety of factors.
Therefore, in the production of LED display, must choose a high flame retardant materials to ensure the quality of display products. At the same time in the LED display installation site to take effective heat dissipation and protective measures, coupled with the later professional installation and maintenance means, in order to effectively reduce the probability of fire and other dangerous events.
Flame retardant grade
According to the flame-retardant material standard ANSI/UL-94-1985, the flame-retardant grade is incremented from HB, V-2, V-1 to V-0, as described below:
- : Minimum flame retardant grade requiring a burning rate of less than 40 mm per minute for samples 3 to 13 mm thick and less than 70 mm per minute for samples less than 3 mm thick.
- V-2: After the sample has undergone two 10-second burn tests, the flame is extinguished within 60 seconds and combustibles can be dropped.
- V-1: After two 10-second burn tests of the sample, the flame is extinguished within 60 seconds and no burning material can fall.
- V-0
Selection of flame retardant materials for LED display
In order to ensure the safety of the LED display in the process of use, the choice of materials for its components should be the following requirements:
- : should use high flame retardant grade materials, such as V-0 grade materials are not easy to burn at high temperatures, and at the same time can effectively prevent the spread of fire.
- Circuit boards and components: Good flame-retardant substrates, such as FR-4 (glass fiber reinforced epoxy resin boards), should be used, and components should be selected with flame-retardant properties.
- Power cord and connectors
LED display heat dissipation and protection design
Heat dissipation system: Good heat dissipation design is the key to prevent the LED display from overheating. Through the reasonable layout of cooling fans, heat sinks, air conditioners, etc., to ensure that the LED display can effectively dissipate heat when working and reduce the risk of fire.
Waterproof and dustproof design: LED displays are usually installed outdoors or in humid environments, so waterproof and dustproof design is also crucial. Adopting well-sealed housings and waterproof connectors prevents water vapor and dust from entering the inside of the display and reduces the risk of fire caused by short circuit.
Installation and Maintenance Matters
Fire prevention training: fire training for personnel who use and maintain LED displays to enhance their awareness of fire prevention and emergency response capabilities.
