A direct type led flat lamp

Abstract

The invention discloses a direct-down LED flat lamp, which belongs to the technical field of LED lamps, and comprises a frame in which a diffusion layer, a reflection layer and a substrate are sequentially arranged from the front to the back, and LEDs are also arranged on the substrate. The above-mentioned LED is covered with a lens. The present invention uses a lens + LED light bar as a light source, and the light is reflected multiple times in the lens to achieve the purpose of diffusing and improving light uniformity. The LED light bar is a structure set on the bottom surface of the light source and does not use the light guide plate, so that the weight of the whole light is greatly reduced, the structure is simpler, the power of the whole light is smaller, the heat dissipation surface is larger, the heat dissipation effect is better, and the service life is improved.

Description

Technical field: [0001] The invention relates to a direct type LED flat lamp, which belongs to the technical field of LED lamps. Background technique: [0002] The existing LED flat light structure mostly adopts side-entry structure, such as attached figure 1 As shown, it includes a rectangular aluminum frame 6', which is characterized in that the frame 6'is provided with a diffuser 4', a light guide plate 3', a reflector 2', and a back plate 1'in order from the front to the back. There are also 4 or 2 light bars 5'with 400-600 LEDs on the 3'side of the 6'inner light guide plate. The LED flat light with this structure mainly has the following disadvantages: [0003] 1. The luminous efficiency is low. Due to the use of side-entry light transmission, the light emitted by the LED will cause loss after multiple reflections and refractions. [0004] 2. 400-600 LEDs must be used, with high power, and the LEDs are concentrated on the inside of the lamp frame, so the heat dissipation effec...

AI Technical Summary

Problems solved by technology

[0003] 1. The luminous efficiency is low. Due to the use of side-entry light transmission, the light emitted by the LED is lost after multiple reflections and refractions.

[0004] 2. 400-600 LEDs must be used, with high power, and the LEDs are concentrated on the inner side of the lamp frame, and the heat dissipation effect is poor;

[0005] 3. The structure is complex. Due to the light guide plate structure, a diffuser plate, a reflector plate, etc. are required at the same time, which not only increases the weight of the whole lamp, but also further increases the production cost and production efficiency.

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