US 9,518,720 B2 · LED surface light-emitting device for easy shielding and manufacturing method thereof

Abstract

The present invention relates to an LED surface light-emitting device for easy shielding, and a manufacturing method thereof, and includes: an integrated type rear-surface case part having an accommodation space portion open toward the front surface portion thereof, wherein a substrate equipped with LEDs is accommodated in the accommodation space portion; a diffusion panel which covers the open front surface portion of the rear-surface case part, and diffuses light of the LEDs to be a surface light source; and a front-surface window frame, the rear surface of which is coupled to the boundary of the front surface portion of the rear-surface case part, with the diffusion panel located on the rear-surface case part. The present invention is configured as a single body without openings to prevent dust and insects from coming therein, and thus can prevent brightness from decreasing according to use.

Claims17

Dependent claims

An LED surface light-emitting device for easy shielding, comprising:

an integral rear case (20) in which a substrate (10) to which LEDs (11) are mounted is accommodated in an accommodation space opened to a front side;
a light dispersing panel (30) covering the opened front side of the rear case (20), for dispersing light of the LEDs (11) to form a surface light source;
an integral front window frame (40) of which a rear surface is coupled to a periphery of a front surface of the rear case (20) while the light dispersing panel (30) is located on the rear case (20);
and
a power supply unit, wherein the rear case (2) includes:
a plurality of reinforcing portions protruded from a rear side of the flat bottom surface to which the substrate (10) is fixed;
and
coupling supports (27) provided on the rear side of the flat bottom surface to which the substrate (10) is fixed,
wherein portions of one surface of the power supply unit (50) is supported by coupling supports (27) and the reinforcing portions (24).

6 more elements

A method of manufacturing an LED surface light-emitting device for easy shielding, the method comprising:

a) manufacturing an integral rear case (20) formed of a synthetic resin through injection-molding to have a bending surface (21) provided on one side of a bottom surface thereof and a support surface (22) flatly extending from the bending surface to a side surface such that an accommodation space having an opened front side is formed, in which a plurality of reinforcing portions (24) and a plurality of coupling supports (27) are located on a rear surface thereof;
b) manufacturing a front window frame (40) formed of a synthetic resin through injection-molding to have an opening (43) at a central portion thereof and integrally provided with a plurality of reinforcing portions (42) on a rear surface thereof, the size of the front window frame (40) being larger than the size of the rear case (20);
c) preparing a light dispersing panel (30) for dispersing light such that light is emitted from a surface thereof;
d) fixing a substrate (10) to which LEDs (11) are mounted at a predetermined interval within the accommodation space of the rear case (20);
e) stacking the light dispersing panel (30) and the front window frame (40) on the support surface (22) of the rear case (20) in which the substrate (10) is accommodated, and fixing the rear case (20) and the front window frame (40) using a plurality of bolts while the light dispersing panel (30) is interposed between the rear case 20 and the front window frame (40);
and
f) locating the power supply unit (50) on the reinforcing portions (24) provided on the rear surface of the rear case (20) and the coupling support (27), and fixing the power supply (50) to the coupling support (27) using bolts.

4 more elements

Dependencies are inferred from the claim text.

LED surface light-emitting device for easy shielding and manufacturing method thereof

Life of this patent

LED surface light-emitting device for easy shielding and manufacturing method thereof

Life of this patent

Abstract

Claims17