WO2016122165A1 - Troffer-style led lighting apparatus - Google Patents

Abstract

The present invention relates to a troffer-style LED lighting apparatus comprising: a hexahedral upper housing (10) having an open bottom surface and a downwardly convex bent part (11) in the center of the upper surface; a lower housing (20) extending from both sides of the upper housing (10) in a downwardly sloped direction of a set angle; a pair of substrates (40), fixed on both inner sides of the bent part (11) of the upper housing (10), for inducing the light discharge direction of installed LEDs (41) to be angled with respect to the ground; fixed members (50) attached to the inner side surfaces of the upper housing (10); and a diffusion plate (60) having parts of the outer edge thereof inserted into the coupling holes (51) provided in the fixed members (50) to cover the bottom surface of the upper housing (10).

Description

Troffer Style LED Lighting Fixtures

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a troffer style LED luminaire, and more particularly to a troffer style LED luminaire that can meet the DLC-II standard set forth by the US Environmental Protection Agency.

In general, troffer-style lighting fixtures are commonly used in offices and industrial spaces around the world, and are used in a state that is suspended from the ceiling mounted directly or extending from the ceiling.

In particular, troffer-style lighting fixtures using LEDs are known to solve problems such as high power consumption and short lifespan of conventional light source means, and troffer-style lighting apparatuses using LEDs as light sources have been developed. When LED is used as a light source, the life span of the lighting fixture is significantly increased compared to the existing light source, and thus the amount of waste emitted is significantly reduced to prevent environmental pollution, and it is expected to contribute to energy saving due to low power consumption. have.

Recently, the US Design Lights Consortium Qualified Products List proposed a DLC-II standard that is stronger than the existing DLC-I standard. The DLC criterion relates to the luminous flux per unit power (lm / W), so that the energy efficiency of the lighting can be easily determined.

Since this standard is not related to the overall brightness of the lighting itself, the power consumption increases even when applied to the lighting by increasing the number of LEDs as the light source. There is a need for a structure of a lighting fixture.

Although the standard of DLC-I was 80lm / W, the more strengthened DLC-II is 115lm / W at least, so the structure that can increase the luminous flux while maintaining the power consumption of LED chips as light sources is required. It is becoming.

An example of a conventional troffer-style LED lighting fixture is Patent Publication No. 10-2010-0017616 (lighting equipment and lighting device, published February 16, 2010). As can be seen in Figures 8 and 9 of the above patent publication, the conventional troffer-style LED lighting fixture has an open bottom and an inclined side, and includes a housing having a wider bottom than the top, and the LED is mounted. The substrate is in contact with the inside of the upper surface has a fixed structure.

Therefore, the light emitted from the LED is directed downward, thus, even when the reflective sheet is attached to the inner surface of the housing, there was a problem that it is very difficult to obtain the reflective effect by the reflective sheet.

In such a structure, it is possible to provide a luminaire that satisfies the DLC-I standard, but it is very difficult to provide a luminaire that satisfies the enhanced DLC-II standard.

In addition, the conventional Troffer-style LED lighting fixture is a configuration that is formed and assembled separately from the upper housing including the light source and the lower housing reflecting the emitted light, the configuration is complicated, manufacturing cost is high, the upper housing and the lower Since the housing must be mutually coupled, there is a problem in that productivity is reduced due to a lot of working time.

The problem to be solved by the present invention in view of the above problems is to provide a troffer-style LED lighting apparatus that can satisfy the DLC-II standard.

In addition, another object of the present invention is to provide a trooper-style LED lighting fixture that can provide a housing of an integrated structure.

In addition, another object of the present invention is to provide a trooper-style LED lighting fixture that can increase the productivity by having a simple coupling structure.

The present invention provides a troffer-style LED lighting fixture for solving the above problems, the present invention relates to a troffer-style LED lighting fixture, having a bent portion 11 convex to the lower side in the center of the upper surface and the bottom surface is open hexahedron The upper housing 10 of the structure, the lower housing 20 extending in a direction inclined downward at a predetermined angle from both sides of the upper housing 10, and the inside of the bent portion 11 of the upper housing 10 A pair of substrates 40 fixed to both side surfaces so that the light emitting direction of the mounted LEDs 41 is inclined with respect to the ground, and a fixing member adhered to an inner side surface of the upper housing 10 ( 50 and a part of an edge is inserted into the fastener 51 provided by the fixing member 50, and includes a diffusion plate 60 covering the bottom surface of the upper housing 10.

In the present invention, the Troffer-style LED lighting device has an effect of arranging the LEDs in an inclined direction so that the light emitted from the LEDs can be effectively reflected on the reflecting sheet to reduce the light loss rate to obtain a higher amount of light for unit power.

In addition, the present invention has the effect of increasing the productivity by integrally manufacturing the upper housing that accommodates the light source including the LED and the lower housing reflecting the light emitted from the light source.

In addition, the present invention is configured to adhere the fixing member to the inner edge of the upper housing, using the fixing member to fix the diffusion plate coupled to the bottom of the upper housing, to simplify the configuration and fastening process, to reduce the cost, There is an effect that can improve the productivity.

1 is a top side perspective view of a troffer style LED lighting device according to a preferred embodiment of the present invention.

FIG. 2 is a bottom perspective view of FIG. 1. FIG.

3 is a sectional view taken along the line A-A in FIG.

4 is an enlarged cross-sectional view of a main part of FIG. 3.

Explanation of sign

10: upper housing 11: bend

12: reflective film 20: lower housing

30: finish part 40: board

41: LED 50: fixing member

51: fastener 52: support

53, 54: elastic protrusion 60: diffusion plate

70: power supply

Hereinafter, with reference to the accompanying drawings of the present invention troper-style LED lighting fixtures will be described in detail.

1 is a top side perspective view of a troffer style LED lighting device according to a preferred embodiment of the present invention, FIG. 2 is a bottom side perspective view of FIG. 1, FIG. 3 is an AA cross-sectional view of FIG. 1, and FIG. 4 is of FIG. 3. It is the main partial enlarged section.

Referring to FIGS. 1 to 4, the troffer-style LED lighting device according to a preferred embodiment of the present invention has an upper housing 10 having a hexahedron structure having a bottom 11 having a bent portion 11 convex toward the lower side in the center of the upper surface. ), A lower housing 20 extending in a downwardly inclined direction at a predetermined angle from both sides of the upper housing 10, and fixed to both side surfaces of the bent portion 11 of the upper housing 10, A pair of substrates 40 in which the light emitting direction of the mounted LEDs 41 is inclined with respect to the ground, a fixing member 50 bonded to the inner side of the upper housing 10, and the fixing member A portion of the edge is inserted into the fastener 51 provided by the 50, and comprises a diffusion plate 60 covering the bottom surface of the upper housing 10.

Reference numeral 70 is a power supply.

Hereinafter, the configuration and operation of the troffer-style LED lighting device according to a preferred embodiment of the present invention configured as described above will be described in more detail.

First, the upper housing 10 and the lower housing 20 is a metal plate, the upper housing 10 of the inclined structure on both sides so that the upper surface is narrower than the bottom surface as shown in Figure 3 by bending this, and The lower housing 20 extends from both lower ends of the upper housing 10 and is inclined downward to serve as a reflector to reflect light.

It is a structure that can form the upper housing 10 and the lower housing 20 at the same time by bending the metal plate, and as compared to the method of manufacturing the upper housing and the lower housing separately and combined with each other, as compared to the conventional method, The manufacturing time can be shortened.

Since the structure of the upper housing 10 and the lower housing 20 may not have sufficient rigidity, the finishing parts 30 are coupled to both ends of the upper housing 10 and the lower housing 20 to maintain rigidity. do.

The finish portion 30 can be easily produced by injection molding of a resin material.

In the center of the upper surface of the upper housing 10 is formed a bent portion 11 provided along the longitudinal direction of the upper housing 10. The bent portion 11 is bent to protrude downward, and the two inner side surfaces of the bent portion 11 are seating surfaces on which the substrate 40 on which the LED 41 is mounted is seated.

Side of the bent portion 11 is formed so that the acute angle (θ) with the upper surface of the upper housing 10 is 45 to 48 degrees, so the direction that the light emitting surface of the LED 41 is directed in the vertical direction It is inclined from 45 to 48 degrees.

That is, the direction of inclination of the light emitting surface of the LED 41 when the virtual vertical line passing through the center of the bent portion 11 is 45 to 48 degrees inclined to the left and the right from the virtual vertical line, respectively. do.

Such a structure is to increase the luminous flux by allowing the light emitted from the LED 41 to be sufficiently reflected on the inner surface of the upper housing 10.

It is assumed that the reflective film 12 is attached to the entire inner surface of the upper housing 10.

The fixing member 50 is fixed to the inner side of the upper housing 10 by bonding. The fixing member 50 has a support portion 52 in contact with the inner side of the upper housing 10 and protrudes in the same direction from the support portion 52, so that the fastener 51 is provided therebetween. It comprises a pair of spaced apart elastic protrusions (53, 54).

The resilient protrusions 53 and 54 are restoring forces acting toward each other.

A part of the edge of the diffusion plate 60 is inserted into and fixed to the fastener 51 of the fixing member 50.

As such, in the present invention, the fixing member 50 is adhered to the side of the upper housing 10 without using a complicated coupling structure to fix the diffusion plate 60 to the lower side of the upper housing 10. Since the diffusion plate 60 can be fitted and fixed, the time required for assembly can be shortened.

In this structure, when power is supplied from the power supply unit 70 to the substrate 40, light is emitted from the LED 41. The light emission angle of the LED 41 is usually 120 degrees, and a part of the emission light of the LED 41 is incident and diffused directly into the diffusion plate 60, and a part of the emission light is emitted to the reflective film 12. Reflected by the reflective film 12 is diffused through the diffusion plate 60 is emitted to the outside.

In this case, the LEDs 41 may be disposed to be inclined to prevent dark portions from occurring inside the upper housing 10, and light is irregularly reflected in the upper housing 10 to reach the diffusion plate 60. The uniformity of the light can be improved.

Thus, it is possible to provide an illumination having the same or larger luminous flux while using less power than conventionally.

The light emitted through the diffusion plate 60 is reflected back to the inner surface of the lower housing 20 to illuminate with a predetermined light distribution. The inner surface of the lower housing 20 may be painted in white.

It will be apparent to those skilled in the art that the present invention is not limited to the above embodiments and may be variously modified and modified without departing from the technical spirit of the present invention. will be.

The present invention has the possibility of industrial use to minimize the light loss to increase the efficiency of the lighting device.

Claims (5)

An upper housing 10 having a hexahedron structure having a bent portion 11 convex toward the lower side in the center of the upper surface; A lower housing 20 extending in a direction inclined downward at a predetermined angle from both side surfaces of the upper housing 10; A pair of substrates 40 fixed to both side surfaces of the bent portion 11 of the upper housing 10 such that the light emitting direction of the mounted LEDs 41 is inclined with respect to the ground; A fixing member 50 adhered to an inner side of the upper housing 10; A part of the edge is inserted into the fastener 51 provided by the fixing member 50, the troper style LED lighting device comprising a diffuser plate 60 covering the bottom of the upper housing (10). The method of claim 1, The upper housing 10 and the lower housing 20 is integral, Troffer-style LED lighting fixture, characterized in that formed by bending one metal plate at the same time. The method according to claim 1 or 2, The light emission direction of the LED 41, Troffer-style LED lighting device, characterized in that the angle of downward 45 to 48 degrees in the left and right directions relative to the virtual vertical line passing through the center of the bent portion (11). The method according to claim 1 or 2, The fixing member 50, And support portion 52 in contact with the inner side of the upper housing 10, A trooper style LED lighting device comprising a pair of elastic protrusions (53, 54) projecting in the same direction from the support (52), and spaced apart so that the fastener (51) is provided therebetween. The method according to claim 1 or 2, Trofer-style LED lighting fixture, characterized in that the reflective film 12 is bonded to the entire inner surface of the upper housing (10).

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