JP2019091585A - Light emitting diode luminaire - Google Patents

Abstract

To increase illuminance to merchandise while freezing power consumption, to prevent chips of light emitting diodes from being reflected in wrap covering the merchandise, and to prevent a light emitting diode luminaire from warping even when the light emitting diodes generate heat.SOLUTION: On an inside surface of a back part 10 of a long and translucent casing 2 whose cross section has a substantially triangular shape, a printed circuit board 6 is arranged on which a plurality of light emitting diodes 5 are mounted linearly. The light emitting diodes 5 of the printed circuit board 6 radiate light in the horizontal direction. A reflection plate 7 is arranged by inclining at a predetermined angle so as to reflect the light from the light emitting diodes 5 downward. In the measurement result, in the angle range of substantially 90°, illuminance has been increased compared to the previous one, and in the case of the angle of 0°, the illuminance has been increased by substantially 1.33 times.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a light emitting diode lighting apparatus using a light source as a light emitting diode (LED), and more specifically, a light emitting diode lighting apparatus disposed on a lower surface of a cabinet for displaying goods or a shelf of a refrigerated and display cabinet. It is about

FIG. 8 shows a perspective view of a conventional luminaire main body 50 having a circular cross section, and the outer shell of the luminaire main body 50 is provided on a cylindrical casing 51 and on both sides of the casing 51. The cap 52, 53 is configured.
FIG. 9 shows a plan view of the printed circuit board 54 disposed in the casing 51. On the surface of the printed circuit board 54, light emitting diodes (LEDs) 55 are linearly arranged at predetermined intervals. There is. The lateral length of the printed circuit board 54 may be one or more depending on the length of the lighting device main body 50 itself. When a plurality of printed circuit boards 54 are used, each printed circuit board 54 is connected by soldering with a plated wire.

  FIG. 10 shows a state in which the printed circuit board 54 on which the light emitting diode 55 is mounted is disposed in the casing 51, and the light emitting diode 55 emits light downward. The lighting fixture main body 50 is disposed on the lower surface of a shelf of a cabinet for displaying goods, or on the lower surface of a shelf of a frozen / refrigerated show case, and the commodity placed on the lower shelf is viewed from above It is what makes products look good in the light.

However, the conventional luminaire main body 50 has the following problems. That is, to increase the illuminance to improve the appearance of the product, it is necessary to use a high output light emitting diode, and in such a case, the power consumption is increased, which is against the energy saving.
Moreover, since the direct light of the light emitting diode 55 is irradiated to the product, when the product is a food, there is a problem that the chip itself of the light emitting diode 55 is reflected on the wrap of the food and the product value is reduced.

  In addition, when the light emitting diode 55 is made to flow by causing a current to flow, the light emitting diode 55 generates heat, and the casing 51 is heated. Since polycarbonate is used as the material of the casing 51, the printed circuit board 54 disposed in the casing 51 generates heat, and the whole of the luminaire main body 50 warps under the influence of the linear expansion coefficient, and the goods of the luminaire main body 50 itself There was also the problem of losing value.

The present invention has been made in view of the above problems, and provides a light emitting diode lighting apparatus having at least the following objects.
(1) To increase the illuminance on products while leaving power consumption unchanged.
(2) Make sure that the chip of the light emitting diode does not appear on the wrap covering the product.
(3) Make sure that the light emitting diode lighting apparatus does not warp even if the light emitting diode generates heat.

  Therefore, in the light-emitting diode lighting device according to claim 1 of the present invention, in the light-emitting diode lighting device for irradiating light from the light-emitting diode to a product, the printed substrate 6 on which the light-emitting diode 5 is mounted It is characterized in that it comprises a reflecting plate 7 for reflecting light and irradiating the product with the reflected light, and a casing 2 in which the printed board 6 and the reflecting plate 7 are accommodated.

  In the light emitting diode lighting device according to claim 2, the printed circuit board 6 is erected to irradiate the light from the light emitting diode 5 in a substantially horizontal direction, and the light from the light emitting diode 5 of the printed circuit board 6 is vertically The reflecting plate 7 is disposed so as to be inclined at a predetermined angle so as to reflect downward.

  The light emitting diode luminaire according to claim 3 is characterized in that the cross-sectional shape of the casing 2 is substantially triangular.

  The light emitting diode luminaire according to claim 4 is characterized in that the cross-sectional shape of the casing 2 is a quadrangle other than a substantially triangular shape, a polygon or a circle.

  According to the light emitting diode luminaire according to claim 1 of the present invention, in the light emitting diode luminaire emitting light from the light emitting diode to a product, the printed board 6 on which the light emitting diode 5 is mounted and the light emitting diode 5 Since the reflector 7 for reflecting light and irradiating the product with the reflected light, and the casing 2 for receiving the printed circuit board 6 and the reflector 7, it is possible to keep the power consumption as it is. The illumination intensity can be increased, and the chip itself of the light emitting diode 5 can be prevented from being reflected on the wrap covering the product, and the value of the product can be increased.

  According to the light emitting diode luminaire according to claim 2, the printed circuit board 6 is erected to irradiate the light from the light emitting diode 5 in a substantially horizontal direction, and the light from the light emitting diode 5 of the printed circuit board 6 is Since the reflection plate 7 is disposed at a predetermined angle so as to reflect vertically downward, the illuminance of the product from the reflection plate 7 is approximately 90 degrees while the power consumption is left. It was possible to raise up the range of °, and in particular, it was possible to raise the illuminance approximately 1.33 times directly under the reflector 7 whose angle is 0 °. Moreover, the chip itself of the light emitting diode 5 can be prevented from being reflected on the wrap covering the product, and the value of the product can be increased.

  According to the light emitting diode luminaire according to claim 3, by making the cross sectional shape of the casing 2 substantially triangular, even if the light emitting diode 5 generates heat, the cross sectional shape of the casing 2 is warped as compared with the case where the cross sectional shape is circular. Can be suppressed. In addition, since the height dimension of the luminaire main body 1 (casing 2) is determined by the height dimension of the printed circuit board 6, it can be thinner than in the case of a conventional luminaire having a circular cross section of 28 mm in diameter. You can take effective space to put food on shelves, such as showcases.

  According to the light-emitting diode lighting device of claim 4, the cross-sectional shape of the casing 2 is a square, a polygon or a circle other than the substantially triangular shape, so that the design effect of the lighting device main body 1 is made as an arbitrary design. Can be mentioned.

It is a perspective view of the lighting fixture main body in embodiment of this invention. (A)-(f) is the top view of the lighting fixture main body in embodiment of this invention, a front view, a bottom view, a rear view, a left view, and a right view. It is AA expanded sectional view of FIG.2 (b) in embodiment of this invention. It is a principal part disassembled perspective view in an embodiment of the invention. It is explanatory drawing in the case of measuring the illumination intensity in embodiment of this invention. It is explanatory drawing in the case of measuring the illumination intensity of a prior art example. It is a figure which shows the illumination intensity comparison measurement result of this invention and a prior art example. It is a perspective view of the light emitting diode lighting fixture of a prior art example. It is a top view of the printed circuit board which installed the light emitting diode in a row. It is a figure which shows the state which arrange | positioned the printed circuit board in the casing whose cross section of a prior art example is circular.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a perspective view of the lighting device body 1 of the present invention, FIG. 2 (a) is a plan view of the lighting device body 1, FIG. 2 (b) is a front view of the lighting device body 1, FIG. 2 (d) is a rear view of the lighting device body 1, FIG. 2 (e) is a left side view of the lighting device body 1, and FIG. 2 (f) is a lighting device. The right side view of the main body 1 is shown, respectively.
Moreover, FIG. 3 shows the AA expanded sectional view of FIG.2 (b), FIG. 4: has shown the principal part disassembled perspective view of the lighting fixture main body 1. As shown in FIG.

  The luminaire main body 1 of the present invention collects the irradiation range of the light of the lamp (light emitting diode light) of the show case into only the products (for example, fresh food) placed on the shelf of the show case (only necessary parts) It is made to light, power consumption is made the same as before, and only illumination is raised about 1.33 times.

The luminaire main body 1 has an outer shell including a casing 2 having a substantially triangular cross section and a translucent polycarbonate material 2 and caps 3 and 4 each having a substantially triangular cross section mounted on both sides of the casing 2 Is configured.
As shown in FIG. 3 and FIG. 4, a printed circuit board 6 in which a plurality of light emitting diodes 5 having the same configuration as the conventional one are arranged in a row is accommodated in a translucent casing 2. Further, in the present invention, the reflection plate 7 which is not in the conventional example is disposed in the casing 2.

The casing 2 is manufactured by extrusion molding and contains a light diffusing agent, and as described above, the printed board 6 and the reflection plate 7 are inserted into the casing 2 which is open at the left and right. I am trying to place it. The translucent casing 2 may be a transparent pipe or a light diffusion type (resin containing a diffusing agent).
As shown in FIG. 3, convex portions 11 and 12 are integrally protruded at the upper and lower sides inside the back 10 on which the casing 2 is erected, and the printed circuit board is formed by the upper and lower convex portions 11 and 12 and the back 10. A groove 13 for the substrate in which 6 is inserted is formed.

Further, a substantially inverted T-shaped protrusion 14 is integrally vertically provided at the upper inside of the casing 2, and a hole 15 is formed over the entire length of the casing 2 at the upper left of the protrusion 14. And screw holes 16 are screwed on both sides of the holes 15.
A protrusion 17 is integrally formed on the right side of the protrusion 14, and a protrusion 20 is integrally formed on a front portion of the casing 2 facing the protrusion 17. The facing projections 17 and 20 and the inner surface of the inclined portion 21 of the casing 2 form a reflecting plate groove 22 in which the reflecting plate 7 is inserted.

The printed circuit board 6 and the reflection plate 7 are respectively slide-inserted into the substrate groove 13 and the reflection plate groove 22, and the printed circuit board 6 and the reflection plate 7 are disposed in the casing 2. As shown in FIG. 4, the left and right caps 3, 4 have the same shape, and holes 25, 25 for inserting lead wires 24 (see FIG. 1) for power supply are formed in the side plate 23 of the cap 3.
Bushings 26, 26 are mounted in the holes 25, 25, and lead wires 24, 24 are inserted through the bushes 26, 26, and the tip of the lead wire 24 is connected to the pattern on the power supply side of the printed circuit board 6.

A small hole 27 is bored in the upper portion of the side plate 23 of the cap 3, and the screw 30 is inserted into the small hole 27, and the screw 30 is screwed into the screw hole 16 of the casing 2. Is mounted on and fixed to the side surface of the casing 2.
The connection of the lead wire 24 to the printed circuit board 6 can be made from either of the left and right caps 3 and 4.

  Here, as shown in FIG. 3, the irradiation direction of the light from the light emitting diode 5 of the printed circuit board 6 is horizontal, and in order to reflect the light in the horizontal direction downward in the vertical direction, the reflector 7 is used. The inclination angle of the inclined portion 21 of the casing 2 is set so as to be an appropriate inclination angle.

Next, the results of illuminance comparison measurement between the present invention and the conventional example will be described. FIG. 5 shows the case where the lighting device main body 1 of the present invention is used, and FIG. 6 shows the case of the conventional lighting device main body 50 having a circular cross section.
The lighting fixture bodies 1 and 50 are each set at a height of 300 mm from the shelf. In the present invention, the vertical reflected light from the reflection plate 7 is at an angle of 0 °, and according to the angle to “product side” and “outside” The illuminance lx was measured. Further, in the conventional example, the vertical direct light from the light emitting diode 55 is 0 °.
In addition, the reflector of the reflector 7 uses a reflector having a reflectance of 98% or more.

As the measurement conditions, the same printed circuit board 6 and power supply are used in the present invention and the conventional example, and the power consumption is 15 W. It was measured at Osaka Municipal Industrial Research Institute on February 24, 2017.
The measurement results are shown in FIG. In FIG. 7, the illuminance was measured at a position where the angle was shifted by “5 °” to “outside” and “product side” centering on the “0 °” portion. The upper column is the measurement result of the illuminance of the present invention, and the middle column is the measurement result of the illuminance of the conventional current lighting fixture. The bottom column shows the illumination increase rate for the current luminaire of the present invention provided with a reflector 7.

In the part of the angle "0 °", the increase rate of illuminance is the highest at approximately 1.33 times, and the increase rate of illuminance is approximately 1.28 times in the range of "outside 30 °" to "product side 15 °" It can be seen that the illuminance is increased in a wide angle range.
In particular, it was possible to raise up compared with the present lighting fixture main body 50 over the range of about 90 degrees ranging from "outside 50 degrees" to "product side 40 degrees".

As described above, in the present invention, the power consumption of the luminaire main body 1 is the same as that of the conventional luminaire by concentrating the light irradiation direction in one direction by reflecting the light from the light emitting diode 5 by the reflecting plate 7. The illuminance on the irradiation body can be increased, and energy saving can be achieved.
In addition, since the light is reflected by the reflection plate 7, the chip of the LED itself can be reflected on the food or the like and the product value can be increased. Furthermore, although the light emitting diode 5 generates heat, the polycarbonate casing 2 is warped in the related art, but in the present invention, since the cross section is substantially triangular, the warping of the casing 2 can be significantly reduced.

  Moreover, although the diameter of the casing 51 of the luminaire main body 50 of the conventional example is 28 mm, in the present invention, the height of the luminaire main body 1 (casing 2) is reduced to 18 mm by making the cross section into a substantially triangular shape. You can, therefore, take effective height space to put food into the showcase.

  In addition, light can be condensed on a required part by making the inclination arrangement | positioning angle of the reflecting plate 7 into an arbitrary angle. In the present embodiment, the portion corresponding to the point of “0 °” maximizes the illuminance, but the “outside” direction or the “product side” can be set by arbitrarily setting the inclination arrangement angle of the reflection plate 7 The illumination at any point in the direction can be maximized.

In addition, in the said embodiment, although the cross-sectional shape of the lighting fixture main body 1 was made into substantially triangular shape, it is not restricted to this. In FIG. 3, the printed board 6 is vertically erected so that the light emitted from the light emitting diode 5 is directed horizontally and the reflecting plate 7 is inclined at a predetermined angle so as to reflect the light from the light emitting diode 5 downward. It has been arranged.
The printed circuit board 6 and the reflecting plate 7 may be in the same state, and the cross-sectional shape of the casing 2 may be a square, a circle, or a polygon. Thereby, the design effect can be mentioned by setting the shape of the lighting device main body 1 as an arbitrary design. It goes without saying that the shapes of the caps 3 and 4 correspond to the cross-sectional shape of the casing 2.

  Further, as described above, the cross-sectional shape of the casing 2 is applied to various ones, and the printed circuit board 6 is disposed not only in the vertical direction but also at an arbitrary angle to lower the light from the light emitting diode 5 (directly downward) The inclined arrangement angle of the reflecting plate 7 can be arbitrarily set so as to irradiate the light or to irradiate the light downward at an angle.

1 luminaire main body 2 casing 3, 4 caps 5 light emitting diode 6 printed circuit board 7 reflector

Therefore, in the light-emitting diode lighting device according to claim 1 of the present invention, in the light-emitting diode lighting device for irradiating light from the light-emitting diode to a product, the printed substrate 6 on which the light-emitting diode 5 is mounted A reflecting plate 7 for reflecting light and irradiating the product with the reflected light; and a casing 2 for receiving the printed board 6 and the reflecting plate 7 ;
The printed circuit board 6 is erected to irradiate the light from the light emitting diode 5 in a substantially horizontal direction, and the reflecting plate 7 vertically reflects the light from the light emitting diode 5 of the printed circuit board 6 downward. In order to be inclined at a predetermined angle .

The light emitting diode luminaire according to claim 2 is characterized in that the cross-sectional shape of the casing 2 is substantially triangular.

The light emitting diode luminaire according to claim 3 is characterized in that the cross-sectional shape of the casing 2 is a quadrangle other than a substantially triangular shape, a polygon or a circle.

According to the light emitting diode luminaire according to claim 1 of the present invention, in the light emitting diode luminaire emitting light from the light emitting diode to a product, the printed board 6 on which the light emitting diode 5 is mounted and the light emitting diode 5 Since the reflector 7 for reflecting light and irradiating the product with the reflected light, and the casing 2 for receiving the printed circuit board 6 and the reflector 7, it is possible to keep the power consumption as it is. The illumination intensity can be increased, and the chip itself of the light emitting diode 5 can be prevented from being reflected on the wrap covering the product, and the value of the product can be increased.
Further, the printed circuit board 6 is erected so as to irradiate the light from the light emitting diode 5 in a substantially horizontal direction, and the reflecting plate 7 vertically moves the light from the light emitting diode 5 of the printed circuit board 6 downward. Since it is arranged to be inclined at a predetermined angle for reflection, it is possible to increase the illuminance of the light from the reflecting plate 7 over the range of about 90 ° while keeping the power consumption stationary, In particular, it was possible to increase the illuminance approximately 1.33 times directly under the reflector 7 whose angle is 0 °. Moreover, the chip itself of the light emitting diode 5 can be prevented from being reflected on the wrap covering the product, and the value of the product can be increased.

According to the light emitting diode lighting device according to claim 2 , by making the cross sectional shape of the casing 2 substantially triangular, even if the light emitting diode 5 generates heat, the cross sectional shape of the casing 2 is warped as compared with the case where the cross sectional shape is circular. Can be suppressed. In addition, since the height dimension of the luminaire main body 1 (casing 2) is determined by the height dimension of the printed circuit board 6, it can be thinner than in the case of a conventional luminaire having a circular cross section of 28 mm in diameter. You can take effective space to put food on shelves, such as showcases.

According to the light-emitting diode lighting device of claim 3 , the cross-sectional shape of the casing 2 is a quadrangle, a polygon or a circle other than a substantially triangular shape, so that the design effect of the lighting device main body 1 is made as an arbitrary design. Can be mentioned.

Claims (4)

In a light emitting diode luminaire for irradiating goods with light from the light emitting diode,
A printed circuit board (6) on which a light emitting diode (5) is mounted;
A reflector (7) for reflecting the light from the light emitting diode (5) and irradiating the reflected light to the product;
A light emitting diode luminaire comprising the printed circuit board (6) and a casing (2) accommodating the reflection plate (7). The printed circuit board (6) is erected to irradiate the light from the light emitting diode (5) in a substantially horizontal direction,
The reflecting plate (7) is disposed at a predetermined angle so as to reflect light from the light emitting diode (5) of the printed circuit board (6) downward in the vertical direction. The light emitting diode lighting device according to claim 1.   The light emitting diode luminaire according to claim 2, wherein the cross-sectional shape of the casing (2) is substantially triangular.   The light emitting diode luminaire according to claim 1 or 2, wherein the cross-sectional shape of the casing (2) is a quadrangle other than a substantially triangular shape, a polygon or a circle.

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