LED landscape lamp based on backlight module

Abstract

The invention discloses an LED landscape lamp based on a backlight module. The LED landscape lamp comprises a backlight module outer frame and a lampshade oppositely connected with the backlight module outer frame in a buckled mode; a plurality of LED lamp bars are installed in the backlight module outer frame, and a light guide plate is arranged between every two adjacent LED lamp bars; the LED light bars are installed at the two ends of the backlight module outer frame through temperature sensing telescopic components; a plurality of diffuse reflection plates are arranged at the joint of thelampshade and the backlight module outer frame; each diffuse reflection plate is in a cambered surface shape, and the diffuse reflection plates are arranged around the lampshade to form a cylinder shape; a hinge point is arranged in the center of the diffuse reflection plates, the hinge point is connected with the end of the light guide plate through a rigid rod, and the light guide plate is clamped through a suspension rod perpendicular to the backlight module outer frame. A certain distance can be kept between the light guide plate and the LED light bar through the temperature sensing telescopic part, and the situation that the display effect is affected by temperature changes is avoided.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to an LED landscape light based on a backlight module. Background technique [0002] The so-called backlight (BackLight) is a kind of light source located behind the liquid crystal display (LCD), and its luminous effect will directly affect the visual effect of the liquid crystal display module (LCM). Liquid crystal itself does not emit light, it displays graphics or characters as a result of its modulation of light. The backlight is the light source that provides the LCD panel. It is mainly composed of light source, light guide plate, optical film, plastic frame and so on. [0003] In the LED backlight module, the LED light bar is set on the side of the light guide plate. The closer the distance between the two is, the better the backlight display effect will be. When the LED backlight module is working, a certain amount of heat will be generated, so that the inside of the LED backl...

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Problems solved by technology

[0003] In the LED backlight module, the LED light bar is set on the side of the light guide plate. The closer the two are, the better the backlight display effect will be. When the LED backlight module is working, a certain amount of heat will be generated, so that the inside of the LED backlight module As the temperature rises, under the effect of thermal expansion and cold contraction, the edge of the light guide plate will extend to both sides, shortening the distance between it and the LED light bar. If the initial distance between the LED light bar and the light guide plate is too small, it will make the LED The light strip contacts and squeezes the light guide plate, which damages it, and the LED landscape light relying on this type of backlight module is also troubled by this problem. In addition, after the internal displacement of this type of LED landscape light The effect of the light source is affected, specifically manifested as uneven brightness

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