KR101212544B1 - One body lens for led lighting apparatus - Google Patents

Abstract

PURPOSE: A module integrated lens for LED lighting apparatus is provided to prevent shadow by forming an integrated lens composed of a plurality of convex lenses such that a central part is formed to be higher than an edge part. CONSTITUTION: A plurality of LED chips(12) are mounted on the upper surface of a printed circuit board(13) at regular intervals. Light from the plurality of chips is emitted to the outside by forming a plurality of convex lenses(10). The convex lenses of the same number as LED chips are respectively formed on the upper surface of the LED chips. The plurality of convex lenses has same curvature.

Description

Module integrated lens for LED lighting fixtures {ONE BODY LENS FOR LED LIGHTING APPARATUS}

The present invention relates to a module-integrated lens for the LED lighting fixture, more specifically, a plurality of convex lenses formed on the upper portion of the printed circuit board on which the plurality of LED chips are mounted so as to correspond to the LED chip, respectively, the convex The lens relates to a module-integrated lens for the LED lighting fixture to be evenly distributed by forming a 0.1 ~ 5.0mm in order to go to the center with respect to the edge to avoid the phenomenon that the light source becomes dark from the center to the edge.

In general, incandescent lamps or fluorescent lamps are widely used as indoor or outdoor lightings, and halogen lamps are used in malls and the like. However, such incandescent lamps, fluorescent lamps or halogen lamps have a short lifespan and a large amount of energy lost to thermal energy, and thus are not used to completely convert electrical energy into light energy.

In other words, incandescent lamps, fluorescent lamps, or halogen lamps used in the related art gradually decrease the illuminance due to deterioration according to the total time of use, and are not environmentally friendly, so the use of the lamps is decreasing. In addition, in order to maximize energy efficiency in terms of energy conservation, the company will strictly regulate the use of the most inefficient incandescent bulbs and stop production in the future. Therefore, luminaires that use LED chips as light fixtures to replace incandescent lamps or fluorescent lamps have been continuously developed.

Normally, indoor and outdoor lighting fixtures used incandescent lamps, fluorescent lamps, halogen lamps, and discharge lamps. However, since CO2 emissions are high, light sources using LED chips, which are low carbon emission sources, are being developed in earnest. It is time to meet the energy policy.

However, due to the characteristics of LED chip, LED lens integrated lens was developed to compensate for the high brightness, high heat generation, straightness of light and long distance of light.

Up to now, the lenses used in LED lighting fixtures have high power (1W, 3.3W), so they are attached separately, but the efficiency is not high due to high heat.In addition, one (1) LED lens for 0.2W and 0.5W grades is also installed. Therefore, the light distribution or illuminance did not come out as much as desired, and even though an integrated lens is used, the LED chip is used not to be in close contact with the chip due to the high temperature, and is used at a certain distance (about 20mm or more).

The lens of the present invention has the advantage of using low power (0.2W, 0.5W), low glare, high heat does not occur, and evenly distributes the light, the light can reach a long distance. Therefore, because it brings high light efficiency (high efficiency) with low power consumption, it is economical and can cope with power consumption of 1/5 compared with conventional PL-embedded luminaires, and eliminates high brightness, which is a disadvantage of conventional LED chips, It does not generate heat, and evenly distributes the illuminance, so it can be sent far away. There is no hassle of attaching multiple lenses and it saves installation cost, which helps to strengthen the competitiveness.

That is, in the conventional fluorescent lamps or incandescent bulbs, some of the electrical energy supplied is lost to thermal energy, and some are converted to light energy. However, since light emitted from light energy is dispersed in all directions, the lighting effect is known to be greatly reduced. On the other hand, if LED chip is used, there is no light dissipation and it converts electrical energy directly into light energy, so there is almost no heat loss, power consumption is about 1/7 and brightness is 4 to 5 times brighter. .

However, the lighting using the LED chip has various advantages such as excellent controllability, fast response speed, high electro-optical conversion efficiency, long life, and high brightness, but the desired illumination is long when the light diffusion distance is long because the output per chip is weak. The problem is that a satisfactory illuminance cannot be obtained in space.

In order to solve this problem, lighting lamps are being developed that have a large number of high-power LED chips mounted on a substrate.However, heat sinks and blower fans need to be installed due to the high heat generated by the LED chips themselves. It is also known to be inefficient.

In addition, the illumination using the conventional LED chip has a small amount of light emitted, so it is often impossible to secure sufficient illuminance at the place to be illuminated, and thus, sufficient illuminance may be obtained by using an injection molding such as acrylic or by using light distribution characteristics. Securing was the key.

In addition, the conventional luminaire using LED chip is made by attaching individual lenses to the lens plate one by one, so that the lens is detached due to the high heat generated from the LED chip, and the work efficiency is not good, and the lens is attached. Due to this, there was a problem in that not enough lighting was secured.

In particular, when the convex lens is mounted on the LED chip to secure the illuminance, as the convex lens is formed into a hemispherical shape having a uniform height, the light source is gathered to the center and becomes darker from the center to the edge. There is a problem that the illuminance is not uniform over the front of the.

KR 10-08110610000 B1 KR 10-09918900000 B1

The present invention is an LED luminaire module integrated lens formed with a convex lens corresponding to each of the LED chip on the printed circuit board is equipped with a plurality of LED chips to solve the above problems, the convex lens from the edge to the center portion. It is a technical problem to form a progressively higher by 0.1mm to 5.0mm in order to avoid the phenomenon that the light source becomes dark from the center to the edge so as to evenly distribute the surface having a constant illuminance.

According to the present invention, a plurality of LED chips 12 are disposed on the upper surface of a printed circuit board 13 mounted at predetermined intervals, and a plurality of convex lenses are formed to direct light emitted from the plurality of LED chips 12 to the outside. In the module-integrated lens for LED lighting fixture for irradiating, the same number of convex lenses and the same number of LED chips 12 mounted on the printed circuit board 13 are formed on the upper surface, respectively, the lower surface of the position where the convex lens is formed Insertion grooves 9 are formed to accommodate the LED chip 12, respectively, and the plurality of convex lenses have the same curvature, which is formed by 0.1 to 5.0mm higher from the edge toward the center to distribute the illuminance evenly. It features.

The present invention forms an integral lens formed of a plurality of convex lenses used in the LED luminaire from 0.1mm to 5.0mm higher toward the center with respect to the edge to prevent the light source from becoming darker from the center to the edge to cause shadows. In addition, by evenly distributing the illuminance of the irradiation surface formed at a certain distance to form a uniform illuminance as a whole it is possible to greatly improve the quality of the lighting fixture.

1 is an exploded perspective view of an LED lighting fixture using the module integrated lens for LED lighting fixture according to an embodiment of the present invention.
Figure 2 is a perspective view of the LED lighting fixture using the module integrated lens for LED lighting fixture according to an embodiment of the present invention.
Figure 3a is a partial cross-sectional view of the LED luminaire using the module integrated lens for LED lighting fixture according to an embodiment of the present invention.
Figure 3b is a partially enlarged cross-sectional view of the module integrated lens for the LED lighting fixture according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying Figures 1 to 3b will be described in detail.

1 is an exploded perspective view of an LED lighting fixture using the LED luminaire module integrated lens according to an embodiment of the present invention, Figure 2 is an LED lighting fixture using the LED luminaire module integrated lens according to an embodiment of the present invention As a combined perspective view, a plurality of LED chips 12 are mounted at a predetermined interval, the printed circuit board 13, the converter 15 for supplying driving power to the LED chip 12, and the printed circuit board ( 13, the convex lens 10 includes a module-integrated lens 11 formed to correspond to the LED chip 12.

Here, a plurality of LED chips 12 are mounted on the printed circuit board 13, and the plurality of LED chips 12 mounted on the printed circuit board 13 are connected to an external power source through the converter 15. Each is connected and driven.

The converter 15 is connected to an external AC power supply to supply the DC power to the LED chip 12 through the converter 15, the plurality of LED chips 12 mounted on the printed circuit board 13 Through the converter 15, a DC power source can be used.

A feature of the present invention is the module-integrated lens 11, which is installed to correspond to each other preferably in the same shape as the printed circuit board 13 on which the plurality of LED chips 12 are mounted, and the printed circuit board 13 A plurality of convex lenses 10 are formed in the module-integrated lens 11 to correspond to the number of LED chips 12 installed in the C9, and correspond to the LED chips 12 in a one-to-one correspondence. In addition, the module integrated lens 11 forms an insertion groove 9 on the surface adjacent to the printed circuit board 13 by the number of the LED chips 12 so that the LED chip 12 is inserted into the insertion groove 9. It is combined in a fully inserted state with fine spacing.

The module integrated lens 11 is formed by injection or molding of an optical polymer, silicone polymer, polycarbonate (PC), polymer, acrylic (PMMA), epoxy series, glass, quartz, or the like. An insertion groove 9 is formed in the lower surface of the module integrated lens 11 so that the LED chip 12 can be inserted. The insertion groove 9 is minute when the LED chip 12 is completely inserted. The structure has a space.

Therefore, compared to the prior art, the loss of light generated from the LED chip is greatly reduced, and the distance between the block lens 10 and the LED chip 12 is short, so that the light reaches and diffuses the light far away through the block lens 10. It can be used in high ceilings such as large conference rooms, seminar rooms, churches and theaters. In addition, it can be used brighter than conventional fluorescent lamps, incandescent lamps or halogen lamps with low power consumption at a short distance.

Figure 3a is a partial cross-sectional view of the LED luminaire using a module integrated lens for LED lighting fixture according to an embodiment of the present invention, Figure 3b is a partially enlarged cross-sectional view of the module integrated lens for LED lighting fixture according to an embodiment of the present invention, The plurality of LED chips 12 mounted on the module integrated lens 11 and mounted on the printed circuit board 13 and the plurality of convex lenses 10 corresponding to 1: 1 are 0.1 toward the center with respect to the edge. It is formed by ~ 5.0mm in height so that the light source becomes darker from the center to the edge so that the shadow phenomenon (SPOT) is avoided, and the illuminance of the irradiation surface formed at a certain distance is evened.
In other words, the module-integrated lens 11 according to the present invention, the highest convex lens located at the center focuses the light emitted from the corresponding LED chip to focus at a relatively far distance than other convex lens formed around the However, as compared to the highest convex lens located in the center, the light is emitted from the LED chip toward the edge of 0.1 to 5.0mm in height, so that the focus is formed at a relatively close distance.
Therefore, by uniformly distributing the illuminance and the edge roughness formed in the central portion of the module-integrated lens 11 of the present invention, it is possible to effectively prevent the shadow phenomenon generated in the luminaire using a plurality of convex lenses having the same curvature, thereby maintaining a uniform overall It will maintain the illuminance. In other words, in the case of using a plurality of convex lenses having the same curvature, the amount of light in the center part is always large, so that the center part becomes brighter, while the darker part becomes darker toward the edges, resulting in the shading phenomenon. The higher the height of the lens in the lens, the lower the irradiation dose of light, the straightness (the narrower the angle of irradiation), the lower the height of the spread phenomenon (the wider the angle of irradiation) takes advantage of the fact.

That is, the module-integrated lens 11 of the present invention arranges a plurality of convex lenses having the same curvature so that the straightness is strong at the center and spreads more toward the edges so that the light of the convex lens at the center and the convex lens around the center are respectively By overlapping a plurality of overlapping to improve the roughness and eventually the evenness of the center or the edge is formed evenly.

In this case, when the convex lens is formed such that the height of the convex lens is different from the adjacent convex lens by less than 0.1 mm, the phenomenon that light is focused on the central portion of the module-integrated lens 11 cannot be prevented. It was confirmed by the experiment that can not prevent. In addition, when the height of the convex lens formed at the center of the module-integrated lens 11 becomes too high when the height of the convex lens is different from that of other convex lenses, the height of the entire illumination area of the LED lighting fixture is extremely high. It is angry and has no value as a lighting fixture. Therefore, it is preferable that the plurality of convex lenses formed on the module-integrated lens 11 according to the present invention have a thickness of 0.1 to 5.0 mm with adjacent convex lenses.

9: insertion groove
10 convex lens
11: module integrated lens
12: LED chip
13: printed circuit board

Claims (1)

The plurality of LED chips 12 are located on the upper surface of the printed circuit board 13 mounted at regular intervals, and form a plurality of convex lenses to irradiate the light emitted from the plurality of LED chips 12 to the outside. In the module-integrated lens for the LED lighting fixture,
The same number of convex lenses as the plurality of LED chips 12 mounted on the printed circuit board 13 are formed on the upper surface, respectively, and inserted so that the LED chips 12 are respectively accommodated on the lower surface of the position where the convex lens is formed. Groove 9 is formed,
The plurality of convex lenses have the same curvature, LED-integrated lens integrated lens, characterized in that evenly distributed by roughly 0.1 to 5.0mm from the edge toward the center portion.

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