JP5723539B2 - High-efficiency lighting device - Google Patents

Description

The present invention relates to a lighting device, and more particularly to a high-efficiency lighting device in which the lighting efficiency of an LED lighting device is improved.

As shown in FIG. 8 which is a perspective view of the conventional LED lighting apparatus 51 and FIG. 9 which shows a longitudinal section thereof,
A diffusing plate 54 covering the lower side of the reflecting plate 53 covers the LED element light source 52 and the reflecting plate 53 to prevent the entry of contaminants such as dust.
However, since the glare cut that blocks dazzling light with an elevation angle of 30 degrees or less cannot be performed with the reflector 53 alone, a basic concept of arranging a light shielding plate (louver) 55 below the reflector 53 has been proposed (Patent Document 1). However, since the light shielding plate 55 is exposed outside the reflection plate, dust accumulates on the light shielding plate 55. Moreover, since the reflecting plate 53 and the light shielding plate 55 are separate components, there is a problem that the cost for manufacturing and the cost for assembling them increase.

On the other hand, a substrate, a plurality of light emitting diodes arranged on one surface of the substrate, and a plurality of reflecting surface portions arranged on one surface side of the substrate and reflecting the light of the light emitting diodes are arranged adjacent to each other and adjacent to each other The surface side between the reflecting surface portions is continuously provided with a ridge line, the spread angle of the direct light distribution pattern from which the light from the light emitting diode is directly emitted, and the reflected light distribution pattern from which the light from the light emitting diode is reflected and emitted by the reflecting surface portion There has been proposed an illumination device including a reflector having substantially the same spread angle (Patent Document 2).
According to this, although it is not necessary to provide a separate light shielding plate, there is a risk that dust or the like may adhere to the light-emitting diode as a light source and the reflecting surface itself, and thus it is inevitable that they will become dirty over time.

The illuminance is determined by dividing the value obtained by multiplying the number of luminous flux per fixture, the number of fixtures, the illumination rate, and the maintenance rate by the area (IJE-001 JIEG-001 “Lighting Design Maintenance Rate and Maintenance Plan ( (3rd edition)
]).
The maintenance rate is calculated by multiplying the luminous flux maintenance factor of the light source and the design luminous flux maintenance factor of the lighting fixture. The contamination of the lighting fixture is the design luminous flux maintenance factor (hereinafter referred to as “Md”) of the lighting fixture. Since the rank is lowered, it was not possible to set a high Md rank, which is a factor that defines the illuminance. For this reason, conventionally, it has been necessary to increase any of the number of light beams, the number of fixtures, and the illumination rate, and it has been difficult to suppress energy consumption.

Furthermore, although illustration is abbreviate | omitted, although the lighting fixture which has arrange | positioned the straight tube | pipe fluorescent lamp 2 rows is used frequently,
This can be glare cut by adjusting the vertical length of the reflector in the direction perpendicular to the straight tube fluorescent lamp axis, but the light parallel to the fluorescent tube axis is glare cut. Therefore, it was necessary to provide a light shielding plate. Moreover, since the fluorescent tube, the reflecting plate, and the light shielding plate are usually exposed indoors, the Md rank at the time of lighting planning must be set low.
Further, since the reflecting plate and the light shielding plate are separate components, their manufacturing and assembly costs increase.

JP 2009-64637 A Japanese Patent No. 4178385

The present invention was created to solve the various problems described above, and is effective in controlling glare-cut and glare-cut light in all directions while being a lighting facility using a plurality of LED element light sources. In addition to increasing the illuminance by guiding it in any direction of the lighting area, it is possible to set the Md and the maintenance rate rank higher when planning the lighting by preventing the reduction of the reflection efficiency due to aging dirt, etc. Alternatively, if the number is the same, it is an object to provide a high-efficiency lighting device that can increase the design illuminance, realize energy saving, and reduce the manufacturing and assembly costs of the lighting fixture.

The present invention includes a plurality of LED element light sources arranged at intervals, an anti-glare reflection plate, and a diffusion plate, and the anti-glare reflection plate surrounds each LED element light source and controls light. you glare shielding all directions I shield a predetermined angle less glare with respect to the horizontal line and the reflection portion having a concave curved surface directing in any direction, the concave surface of the reflective portion is extended downward and In addition, a plurality of anti-glare reflection recesses are integrally formed adjacent to each other, and are formed by integrally molding a plurality of anti-glare reflection recesses, which are formed as concave curved surfaces that guide light in an arbitrary direction within an effective illumination range. In the high-efficiency lighting device fixed and sealed to the anti-glare reflection plate, the diffusion plate has a structure in which one long diffusion plate integrally molded with synthetic resin is fixed to the plurality of anti-glare reflection plates. A high-efficiency lighting device that employs

The invention according to claim 1 includes a plurality of LED element light sources arranged at intervals, an anti-glare reflection plate, and a diffusion plate.
The anti-glare reflection plate includes a reflecting portion having a concave curved surface that surrounds individual LED element light sources and controls light to guide the light in an arbitrary direction, and the concave curved surface of the reflecting portion extends downward to a horizontal line. a light shielding portion is a concave curved surface for guiding and controlling the glare shielding to Rutotomoni light to all directions I shield a predetermined angle less glare in any direction within the effective illumination range, antiglare reflective concave portion consisting of Is formed by integrally molding a plurality of adjacent,
In the high-efficiency lighting device in which the diffusion plate is fixed and sealed to the anti-glare reflection plate,
The anti-glare reflection plate has at least three anti-glare reflection recesses per row, and the shape of the ridge line portion formed at the lower end of the light-shielding portion of the anti-glare reflection recess is rectangular, and the diffusion plate has at least 1 The high-efficiency lighting device is arranged at the height of the intersection of a straight line connecting the light beam emitted from the LED light source of the two anti-glare reflection concave portions disposed between the two anti-glare reflection concave portions and the ridge line portion. .

According to a second aspect of the present invention, the engaging portion formed at the end of the leg portion standing in the shape of a wall on the long side edge portion of the diffusion plate is continuously formed on the outer surface of the side wall of the antiglare reflection plate. It is characterized by being locked to the engaging portion.

The invention according to claim 3 is characterized in that the engaging portion of the anti-glare reflecting plate is slid and engaged with the engaging portion of the diffusion plate.

The invention according to claim 4 is characterized in that the locking portion of the diffusion plate is press-fitted and locked to the engaging portion of the antiglare reflection plate.

According to the present invention, while it is an illumination facility with a plurality of LED element light sources, the light that has been glare cut and glare cut with respect to all directions is controlled to lead to an arbitrary direction of the effective illumination area, and the illuminance is increased. It is possible to increase the sealing degree of lighting fixtures to prevent reduction in reflection efficiency due to aging dirt, etc., and to set the Md at the time of lighting planning, and consequently the rank of maintenance rate can be set high, so that the number of installed fixtures can be reduced or the same number In this way, the design illuminance can be increased, energy saving can be realized, and the manufacturing / assembly cost and operation cost of the lighting fixture can be reduced.
In addition, since the diffusion plate is not fixed for each individual anti-glare reflection plate and the plurality of anti-glare reflection plates are covered with one diffusion plate, there is a gap between the joints of the plurality of anti-glare reflection plates connected to each other. It does not occur, and insects, dust and the like can be prevented from entering through the gaps.
Further, since the antiglare reflector is a complex shape, because it is difficult to inject the exact molten resin in a short period of time into the mold when the size of the injection mold, required to manufacture by injection molding The size of the diffuser plate that can be manufactured by extrusion molding is shortened while reducing the mold manufacturing cost by suppressing the size of the anti-glare reflection plate to be appropriate, and reducing the injection molding time. Since the number of parts is reduced by increasing the length, the manufacturing cost and assembling cost of the lighting fixture of this high-efficiency lighting device can be reduced.

According to the first aspect of the present invention, in addition to the above-described effects, the amount of light per unit area of the LED element light source having high straightness is dispersed and leveled, and viewed obliquely from below in the longitudinal direction of the luminaire. Sometimes, the light is similar to that of a soft surface light emitter, and a gradation in which the brightness changes continuously appears at regular intervals, so that a louver that is not actually attached can be visually recognized.

According to the inventions according to claims 2 to 4 , since the antiglare reflector and the diffuser can be manufactured with a simple structure, they can be manufactured at low cost, and the diffuser can be easily attached to the antiglare reflector. It is possible to increase the sealing degree and reliably prevent the entry of dust and the like into the interior.

FIG. 1 is a perspective view schematically showing a high-efficiency lighting device of the present invention. FIG. 2 is an exploded conceptual perspective view conceptually showing the high-efficiency lighting device of the present invention in an exploded manner. 3 is an AA enlarged vertical sectional view of FIG. FIG. 4 is an enlarged longitudinal sectional view showing another embodiment of the present invention. FIG. 5 is an exploded perspective view showing a mounting structure of the antiglare reflection plate and the diffusion plate. FIG. 6 is an explanatory diagram for explaining how to attach the antiglare reflection plate and the diffusion plate. FIG. 7 is an enlarged longitudinal sectional view showing another embodiment of the present invention. FIG. 8 is a schematic perspective view of a conventional lighting device. 9 is an enlarged vertical cross-sectional view taken along the line BB in FIG.

First, with reference to FIG. 1 thru | or FIG. 6, Example 1 of the high efficiency illuminating device of this invention is demonstrated.
The high-efficiency lighting device 1 of the present embodiment includes a plurality of LED element light sources 2 arranged at intervals,
The anti-glare reflection plate 3, the diffusion plate 4, and the heat sink 5 are configured.
The anti-glare reflection plate 3 includes a reflecting portion 31 having a concave curved surface that surrounds the individual LED element light sources 2 and controls light to guide the light in an arbitrary direction in the effective illumination area, and a concave curved surface of the reflecting portion 31. Anti-glare reflection comprising a light-shielding portion 32 that is formed as a concave curved surface that extends downward and blocks light at a predetermined angle with respect to the horizontal line, usually 30 degrees or less, and controls the light in an arbitrary direction in the effective illumination area. Recess 30a
˜30d is formed by being integrally molded continuously in the same number as the light source 2.

This anti-glare reflection plate 3 is composed of two rows having four to six anti-glare reflection recesses 30a to 30d in each row, and each anti-glare reflection recess has an opening for projecting the LED element light source 2 to the surface. ,
A wall surface of the truncated quadrangular pyramid is recessed in a curved shape that is recessed upward, and a rectangular ridge line portion 34 is formed at the lower end of the light shielding portion 32.
With this configuration, as shown in FIG. 2, the anti-glare reflection concave portion is provided corresponding to each LED element light source while being an illumination facility having a plurality of LED element light sources 2, so that It is possible to provide a high-efficiency lighting device capable of glare cutting and controlling the glare-cut light to be guided in an arbitrary direction of the effective illumination area to increase the illuminance.

In this embodiment, it is difficult to clearly separate the reflecting portion 31 and the light shielding portion 32, but the portion 32 where the thickness does not change in the upper and lower parts of FIG. 4 shown as another example corresponds to the light shielding portion. To do.
In this embodiment, the antiglare reflection plate 3 is integrally formed by injection molding of a synthetic resin such as acrylic resin or polycarbonate, but a metal plate may be drawn. Of course, when the antiglare reflection plate is produced by drawing the metal plate, it is housed in the housing.
Regardless of which form is adopted, a groove 33 that can engage with a locking portion of a diffusion plate 4 described later is formed in the lower portion of the side plate in the longitudinal direction of the antiglare reflection plate 3.
Further, the anti-glare reflecting plate 3 made of synthetic resin is made of a highly reflective resin in order to improve reflection efficiency.

The inner surface of the light-shielding portion 32 has a concave curved surface of the reflecting portion 31 extended downward, and emits light as a concave curved surface that guides the light in an effective illumination area in an arbitrary direction by controlling light with high straightness from the LED light source. It is supposed to improve the irradiation efficiency by effectively using.
Further, the diffusion plate 4 is fixed to the lower surface of the anti-glare reflection plate 3 to seal the space in the anti-glare reflection plate 3,
Insects, dust and the like are prevented from adhering to the LED light source and the antiglare reflector.
Thus, the light-shielding plate exposed in the conventional room is integrated with the conventional reflecting plate to be diffused plate 4.
As a result, the rank of the maintenance rate is increased.
As shown in FIG. 5.6, a cover plate 35 having a shape with which the short side edge of the diffusion plate 4 can be abutted is suspended from one short side edge of the antiglare reflection plate 3. Yes.
A wall-like leg portion is erected on the long side edge portion of the diffusion plate 4, and a hook-like locking portion 41 is formed at the tip thereof.

The length of the diffusion plate 4 in the longitudinal direction is an integral multiple of the length of the antiglare reflection plate 3, but may be determined as appropriate depending on the size of the antiglare reflection plate.
Since the diffusion plate 4 is manufactured by cutting a long product by synthetic resin extrusion to reduce the manufacturing cost, a wall cannot be formed on the short edge.
In order to save the cutting work and increase the sealing degree of the diffusion plate 4, the length of the diffusion plate 4 in the longitudinal direction is an integral multiple of the length of the antiglare reflection plate 3, which is twice in this embodiment. Yes.
With the above configuration, with reference to FIG. 5.6, the diffusion plate 4 is engaged with the groove of the engaging portion 33 formed on the side wall of the antiglare reflection plate 3 with the diffusion plate 4 set still. With the right end of the stopper 41 locked, the anti-glare reflector 3 is slid to the left and pushed forward, the inner side of the cover plate 35 is brought into close contact with the short side edge of the diffuser 4, and the anti-glare is applied to the right of the diffuser 4 A reflection plate 3 is attached.
Similarly, the antiglare reflection plate 3 is attached to the left side of the diffusion plate 4 to complete the integration of the two antiglare reflection plates 3 and one diffusion plate 4 (see FIG. 6B).
When the length of the diffusion plate 4 in the longitudinal direction is three times or more than the length of the anti-glare reflection plate 3, the above-described cover plate 35 is not provided on the anti-glare reflection plate 3 that is not located at both ends.

In addition, it is also possible to press fit and attach using the elasticity of the legs of the diffusion plate 4,
When mounting by press-fitting, leg portions can be formed on the entire circumference of the diffuser plate, so that no gap is formed between the diffuser plate 4 and the anti-glare reflective plate 3, and the sealing degree is increased and insects are emitted from the gap. It is possible to reliably prevent dust and the like from entering.

This high-efficiency lighting device is embedded in a ceiling of a building, and the bottom surface of the diffuser plate 4 and the bottom surface of the ceiling are flush with each other, providing a clean and aesthetic luminaire having no parts protruding from the ceiling. it can.
With the above-described high-efficiency lighting device, it is possible to increase the rank of the maintenance rate of the lighting equipment and to reduce the number of installed fixtures, or to increase the design illuminance if the number is the same, thereby contributing to energy saving.

In the high-efficiency lighting device of the first embodiment, the diffusion plate 4 is configured to be in close contact with the ridge line portion 34 at the lower end of the light shielding portions 33a to 33d of the antiglare reflection plate 3. The dazzling reflection plate 3 is characterized in that the structure is separated from the ridge line portion 34 at the lower end of the light shielding portion.

Referring to FIGS. 7 and 3, the anti-glare reflection plate 3 is composed of two rows 30a and 30e each having four anti-glare reflection recesses 30a to 30d in each row, as in the first embodiment. The shape of the ridge part 34 of the glare reflection recessed parts 30a-30d is made into the rectangle.
In this embodiment, the diffusing plate 4 includes two anti-glare reflection recesses 3 for each row 30a and 30e in FIG.
L attached to two anti-glare reflection recesses 30a and 30d disposed across 0b and 30c
The ED light source is disposed at the height position of the intersection 36 of a straight line connecting the ridge line portion 34 formed at the lower end of the light shielding portion.

With the configuration of this embodiment in which the diffusing plate 4 is disposed at the height of the intersection point 36, LE that has a high degree of straightness is provided.
When the light intensity per unit area of the D element light source is dispersed and leveled and viewed from obliquely downward in the longitudinal direction of the luminaire, the light is similar to the light of a soft surface emitter and the brightness is continuously A changing gradation appears at regular intervals, and a light-shielding plate (louver) that is not actually attached can be visually recognized.

In addition, the diffuser plate 4 of the present embodiment includes an LED element light source attached to two anti-glare reflection recesses arranged between two anti-glare reflection recesses for each row, and a ridge line portion formed at the lower end of the light shielding unit. Are arranged at the height of the intersection point 36 of the straight line connecting the two LED element light sources sandwiching one anti-glare reflection recess 30b and the ridge line portion. It may be attached.

DESCRIPTION OF SYMBOLS 1 High-efficiency illuminating device 2 LED element light source 3 Anti-glare reflecting plate 4 Diffusion plate 5 Heat sink for heat dissipation 30 Anti-glare reflection recessed part 31 Reflecting part 32 Light-shielding part 33 Engagement part 34 Ridge part 35 Cover board 36 Intersection 37 Intersection 51 LED lighting fixture 52 LED element light source 53 Reflector plate 54 Diffuser plate 55 Shading plate

Claims (4)

It is composed of a plurality of LED element light sources arranged at intervals, an antiglare reflection plate, and a diffusion plate,
The anti-glare reflection plate includes a reflecting portion having a concave curved surface that surrounds individual LED element light sources and controls light to guide the light in an arbitrary direction, and the concave curved surface of the reflecting portion extends downward to a horizontal line. a light shielding portion is a concave curved surface for guiding and controlling the glare shielding to Rutotomoni light to all directions I shield a predetermined angle less glare in any direction within the effective illumination range, antiglare reflective concave portion consisting of Is formed by integrally molding a plurality of adjacent,
In the high-efficiency lighting device in which the diffusion plate is fixed and sealed to the anti-glare reflection plate,
The anti-glare reflection plate has at least three anti-glare reflection recesses per row, and the shape of the ridge line portion formed at the lower end of the light-shielding portion of the anti-glare reflection recess is rectangular, and the diffusion plate has at least 1 Two anti-glare reflection concave portions disposed between the two anti-glare reflection concave portions are arranged at a height position of an intersection of a straight line connecting a light beam emitted from the LED light source and the ridge line portion. High-efficiency lighting device. A locking portion formed at the end of a leg portion standing in a wall shape on the long side edge of the diffusion plate is locked to an engaging portion formed continuously on the outer surface of the side wall of the antiglare reflection plate. The high-efficiency lighting device according to claim 1 . The high-efficiency lighting device according to claim 2 , wherein the engaging portion of the anti-glare reflection plate is slid and engaged with the engaging portion of the diffusion plate. The high-efficiency lighting device according to claim 2 , wherein the locking portion of the diffusion plate is press-fitted and locked to the engaging portion of the anti-glare reflection plate.