KR20200112127A - Lighting installation - Google Patents

Abstract

The present invention provides a lighting device including: an LED module light source wherein a green LED module and a white LED module are mixed in a preset ratio; and a driving unit for driving the LED module light source. According to the present invention, the lighting device is suitable for monitoring by maximizing a visibility of a camera in a high-temperature working environment, and has a long lifespan and high energy efficiency.

Description

Lighting installation}

The present invention relates to a lighting device, and more particularly, to a lighting device suitable for monitoring by maximizing camera visibility under a high-temperature work environment, a long lifespan, and high energy efficiency.

With the development of industrialization, production lines are being monitored and controlled in the office to improve productivity. In a high-temperature working environment such as casting or hot rolling, a halogen lamp is used as a light source for real-time inspection of the surface of a product being processed at high temperature.

However, the halogen lamp has a very short lifespan and very low energy efficiency due to the heat generated by the lamp itself and the heat generated in the working environment, thus affecting the operation a lot.

Therefore, a lighting device with excellent characteristics is required to improve product quality control by maximizing camera visibility even under a high temperature working environment.

Republic of Korea Patent Publication No. 10-2016-0075438 (published on June 29, 2016)

Accordingly, the present invention was created to solve the above problems, and an object of the present invention is to provide a lighting device suitable for monitoring by maximizing camera visibility under a high temperature working environment, and having a long lifespan and high energy efficiency.

However, the technical problems of the present invention are not limited to the above-mentioned problems, and other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

A lighting device according to an embodiment of the present invention includes an LED module light source in which a green LED module and a white LED module are mixed and arranged at a predetermined ratio; And a driving unit for driving the LED module light source.

It may further include a reflector for focusing light from the LED module light source and adjusting the irradiation angle.

The lighting of the LED module light source can be dimmed with 50 to 100% light output.

In the LED module light source, the green LED module and the white LED module may be mixed in any one ratio of 10:10, 11:9, 12:8, and 13:7.

The LED module light source may further include a heat dissipation unit that emits heat generated.

The green LED module and the white LED module may be arranged in any one of zigzag, left and right, and up and down.

The lighting device according to the present invention is suitable for monitoring by maximizing camera visibility in a high temperature working environment, has a long lifespan, and has high energy efficiency effects.

1 is a configuration diagram of a lighting device according to an embodiment of the present invention.
2 is a schematic diagram of a strip line.
3 is a schematic diagram of a lighting device using 50W class unit lighting.
4 shows photographs of the manufactured green LED module and the white LED module.
5 is a circuit diagram of a 50W class PSU.
6 is a waveform diagram of the SMPS's dimming control operation.
7 is a diagram showing a measurement result of basic heat dissipation characteristics of unit lighting.
8 shows a photograph of a 50W class unit illumination.
9 shows an interior picture of a unit light.
10 is a diagram showing the heat dissipation characteristics of a 50W class unit lighting.
11 shows a photograph of a 1kW class lighting device.
12 shows a lighting photograph of the 1kW lighting device.
13 is a diagram showing a spectrum change according to a color mix.
14 shows photographs of 50W Green LED Unit Lighting for experimenting with changes in illuminance according to distance and measurement angle.
15 shows a photograph of 50W White LED Unit Lighting for experimenting with changes in illuminance according to distance and measurement angle.
16 shows a photograph of a 1kW Inspection LED Lighting System (all Green LED Unit Lighting) for experimenting with a change in illuminance according to a distance and a measurement angle.
17 shows a photograph of a 1kW Inspection LED Lighting System (Green/White=10:10 left and right mixing) for experimenting with changes in illumination according to distance and measurement angle.
18 shows a photograph of a 1kW Inspection LED Lighting System (Green/White=10:10 Up and Down Mixing) for experimenting with changes in illuminance according to distance and measurement angle.
19 shows a photograph of a 1kW Inspection LED Lighting System (Green/White=10:10 zigzag Mixing) for experimenting with changes in illumination according to distance and measurement angle.
20 shows a photograph of a 1kW Inspection LED Lighting System (Green/White=12:8 zigzag Mixing) for experimenting with changes in illumination according to distance and measurement angle.
21 shows a photograph of a 1kW Inspection LED Lighting System (Green/White=14:6 zigzag Mixing) for experimenting with changes in illumination according to distance and measurement angle.
22 shows a photograph of a 1kW Inspection LED Lighting System (Green/White=16:4 zigzag Mixing) for experimenting with changes in illumination according to distance and measurement angle.
23 shows a picture of a 1kW Inspection LED Lighting System (all Green LED Unit Lighting) without a reflector (reflector) 130 attached for experimenting with a change in illuminance.
24 shows a photograph of a 1kW Inspection LED Lighting System (all Green LED Unit Lighting) attached with a reflector (reflector) 130 having a reflection angle of 30° for experimenting with a change in illuminance.
25 shows a photograph of a 1kW Inspection LED Lighting System (all Green LED Unit Lighting) attached with a reflector (reflector) 130 having a reflection angle of 55° for experimenting with a change in illuminance.
26 shows a photograph of a 1kW Inspection LED Lighting System (all Green LED Unit Lighting) attached with a reflector (reflector) 130 having a reflection angle of 80° for experimenting with a change in illuminance.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in other various forms, and only these embodiments allow the disclosure of the present invention to be complete, and provide ordinary knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to the possessor, and the invention is only defined by the claims.

The same reference numerals refer to the same elements throughout the specification.

Hereinafter, a lighting device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In this case, it will be appreciated that each block of the flowchart diagrams and combinations of the flowchart diagrams may be executed by computer program instructions.

Since these computer program instructions can be mounted on the processor of a general purpose computer, special purpose computer or other programmable data processing equipment, the instructions executed by the processor of the computer or other programmable data processing equipment are described in the flowchart block(s). It creates a means to perform functions.

These computer program instructions can also be stored in computer-usable or computer-readable memory that can be directed to a computer or other programmable data processing equipment to implement a function in a particular way, so that the computer-usable or computer-readable memory It is also possible to produce an article of manufacture containing instruction means for performing the functions described in the flowchart block(s).

Computer program instructions It can also be mounted on a computer or other programmable data processing equipment, so a series of operating steps are performed on a computer or other programmable data processing equipment to create a computer-executable process to perform a computer or other programmable data processing equipment. It is also possible for the instructions to provide steps for executing the functions described in the flowchart block(s).

In addition, each block may represent a module, segment, or part of code including one or more executable instructions for executing the specified logical function(s). It should also be noted that in some alternative implementations it is possible for the functions mentioned in the blocks to occur out of order. For example, two blocks shown in succession may in fact be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order depending on the corresponding function.

1 is a configuration diagram of a lighting device according to an embodiment of the present invention.

Referring to FIG. 1, a lighting device according to an embodiment of the present invention includes a light emitting diode (LED) module light source 100, a driving unit 110, a heat radiating unit 120, and a reflecting plate 130.

The LED module light source 100 is a mixture of a green LED module and a white LED module at a predetermined ratio, and improves camera visibility of a subject in a high temperature environment. The lighting of the LED module light source 100 can be dimmed with 50 to 100% light output.

The LED module light source 100 may be configured with a discrete type PKG or a multi-chip package (MCP) LED, but it is preferable to use a multi-chip package (MCP) LED for miniaturization.

The driving unit 110 includes a power unit for supplying power and a driving IC (Integrated Circuit) for driving the LED module light source 100, and the power unit is a 50W class PSU with an input of 90 to 240Vac and an efficiency of about 90% ( Power Supply Unit) can be configured as an integral multiple, and a linker part can be configured to allow expansion if necessary.

The heat dissipation part 120 is a part for dissipating heat generated from the LED module light source 100, and at least one of a heat sink, a cooler, and an aluminum extrude fin may be used.

The reflector (reflector) 130 focuses the light of the LED module light source 100 when necessary so that the irradiation angle can be adjusted. The reflector 130 is made of SUS material having excellent self-reflectivity. The reflector 130 may be manufactured in 30°, 55°, 80°, or the like.

2 is a schematic diagram of a strip line.

지점에서 관측할 경우, 높이 1.5m에서 순간 온도가 약 100℃ 이상이므로 피사체를 명확히 판단하기 위해서는 고조도가 필요하다. Because the casting casted in FIG. 2 is rolled at a speed of 15 to 17 m/sec non-stop,

When observed from a point, the instantaneous temperature is about 100℃ or higher at a height of 1.5m, so high illumination is required to clearly determine the subject.

Accordingly, this lighting device is expected to be used for strip line as shown in FIG. 2, and is expected to be applied for edge monitering or calibration in strip line.

The LED module light source 100 may be configured as an array of LED unit modules.

In the present invention, for example, by arraying 20 sets of 50W-class unit lighting, a lightweight 1kW-class lighting can be implemented. It is also possible to connect 500W class lights vertically/horizontally by arraying 10 sets of 50W class lights so that they can be expanded if necessary. For convenient replacement and replacement, the 50W-class unit lighting has a built-in SMPS (Switching Mode Power Supply), and the power connection may be configured as a slot. A commercial connector is used to connect the slot. When the power used is more than two types, such as the LED module light source 100 and cooler, the applied SMPS also requires 2 channels and the connection terminal also needs multi, so a general PC (Personal Computer) A connector applied to the connection can be used.

3 shows a schematic diagram of a lighting device using a 50W class unit illumination.

4 is a photograph of the manufactured green LED module and the white LED module, and FIG. 5 is a circuit diagram of a 50W class PSU.

As for a printed circuit board (PCB) for 50W-class unit lighting, a white PCB and a green PCB can be designed and manufactured as shown in FIG. 4. When the white LED is 13W and the green LED is 10W, the module for unit lighting can be assembled by consisting of 4 white series and 6 green series. A drive IC for driving can be built into the SMPS. The SMPS circuit diagram is shown in FIG. 5. The 50W class SMPS of the present invention can be manufactured and used by correcting and modifying the time constant according to the LED PKG in the product designed as the output of the 2011 start-up growth technology development project (PF0.95, EF0.9) by the Small and Medium Business Administration.

FIG. 6 shows the LED current, gate drive out, and D_dimming inputs for dimming 50% and 99% as waveforms during ON/OFF operation of SMPS measured with an oscilloscope and during dimming control operation. When this waveform is actually lit, it can be seen that dimming is continuously 50~100%.

The heat dissipation part 120 of the unit lighting may include a primary aluminum extrude fin and a secondary cooling fan.

To measure the heat dissipation performance of the aluminum extrude fin used for the primary heat dissipation of unit lighting, a thermal imaging camera (Fir Systems, model T335) can be used, and a 10W green LED is attached to the device using a heat dissipation tape and additionally DC fan can be used for heat dissipation. The measurement results after 1 hour aging are shown in FIG. 7. As a result of using only natural convection without a DC fan attached, the maximum temperature is 46.5℃, and if used in a closed system, some problems may occur. The result of using forced convection with a DC fan attached is stable as the maximum temperature is 31.1℃. It can be seen that the temperature spreads, and this result can be applied to the production of unit lighting.

8 is a photograph of the manufactured green and white unit lighting and a photographed light. The internal assembly state of the unit light is as shown in FIG. 9, and if IP is required according to the use environment, it is possible by filling the interior with resin. The SMPS used for unit lighting is 2 channels, and CH1 may be connected to the LED module side, and CH2 may be connected to a cooling fan.

10 is a diagram showing the heat dissipation performance of a 50W class unit lighting. The heat generated from the LED module is transferred to the heat sink without a thermal neck, and the sinked heat must be spread out immediately by the cooling fan. As shown in the figure, the temperature of the COB LED is 65.9℃, the temperature of the heat sink is 59.2℃, the temperature of the part coming out through the fan is 35.7℃, and the temperature of the instrument body is 17.7℃, indicating that it spreads out smoothly without a thermal neck. have.

11 is a photograph of a 1kW class lighting device. 10 50W unit lights were arrayed to form 500W, and two 500W units were arrayed to form 1kW, and a lighting picture is shown in FIG. 12.

The LEDs used in the present invention are green LEDs and cool white LEDs having a wavelength of 520 nm, and green and white colors were mixed to secure camera visibility.

13 is a diagram showing a result of measuring a spectrum while changing unit illumination from green to white. Spectral measurement was performed in a dark room using a spectrometer (Spectrometer, Tec5, model LOE MMS UV-NIR DU-1). In order to measure the ambient light, the integration time was set to 3 and the weighting factor was set to 1. It can be seen that the white spectrum gradually becomes visible from the green:white ratio of 14:6.

The present invention uses the ANA-F11 illuminometer of TOKYO PHOTOELECTRIC of Japan to achieve the illuminance (4,000 lux@150cm (at λp 520+/-5nm)), and the ratio and array method of Green/White 50W LED unit lighting as follows. After measuring each distance (30cm interval) and angle (0, 22.5°, 45°, 67.5°, 80°, 90°) according to the presence or absence of the reflector 130, the optimum manufacturing conditions were derived by comparing and reviewing them. .

14 shows 50W Green LED Unit Lighting manufactured using 6 10W class Green LEDs of COB (Chips On Board) type with excellent thermal efficiency, miniaturization, weight reduction, and price competitiveness, measured from the front of the unit lighting. In the case of °, it showed an illuminance of 1,000 lux or more within a range of approximately 100 cm. However, as the measurement distance increases, the illuminance gradually decreases, and at all measurement angles, the illuminance decreases with the distance. In addition, as the measurement angle increases, that is, as it deviates from the front of the unit light, the illuminance decreases. In particular, the illuminance decreases sharply above 67.5°.

FIG. 15 shows 50W White LED Unit Lighting manufactured using four COB type 15W white LEDs. In the case of 0° measured from the front of the unit lighting, it shows an illuminance of 1,000 lux or more in a range of approximately 140cm, 50W Green LED The illuminance was much higher despite the almost equal power compared to the unit lighting. In addition, the intensity of illumination decreased according to the distance at the measurement distance and all measurement angles, and the same as 50W Green LED Unit Lighting, especially above 67.5° showed a rapid decrease in illumination.

The following is a 1kW manufactured by arraying 50W Green and White LED Unit Lighting in 20 different ways in order to investigate the effect of the array method and ratio of the unit lighting for this lighting device where the arrangement of green and white unit lights is free. This is a measurement of the change in illuminance according to the ratio of Green/White 50W LED unit lighting of the Inspection LED Lighting System and the array method.

FIG. 16 shows a lighting fixture in which a 1kW Inspection LED Lighting System is arrayed with 20 50W Green LED Unit Lighting (All Green), and the illumination gradually decreases according to the distance at the measurement distance and all measurement angles as in the 50W unit illumination. I did. However, in the case of illuminance, which is an important index of the present invention, even at a measurement distance of 210cm, it showed 4,960lux, which far exceeded the final target (4,000lux@150cm (at λp 520+/-5nm)).

Fig. 17 shows a lighting fixture in which 10 50W Green LED Unit Lighting and 10 50W White LED Unit Lighting are arranged left and right, respectively, in a 1kW Inspection LED Lighting System, and shows almost the same results as arrayed with 20 50W Green LED Unit Lighting. Indicated. However, as 50W White LED Unit Lighting was mixed and arrayed, even at 270cm, it showed 4,100lux, exceeding the final target (4,000lux@150cm).

In the case of Fig. 18, in which an array of 50W Green LED Unit Lighting and 50W White LED Unit Lighting is arranged up and down, 4,080 lux exceeding the final target (4,000 lux @ 150 cm) even at 270 cm, and when arrayed with zigzag (Fig. 19) In addition, even at 270 cm, 4,140 lux, which exceeded the final target, was shown.

Fig. 20 shows a lighting fixture in which 12 50W Green LED Unit Lighting and 8 50W White LED Unit Lighting are respectively arrayed in zigzag in a 1kW Inspection LED Lighting System, and 10 50W Green LED Unit Lighting and 10 50W White LED Unit Lighting. It exhibited the same behavior as the change in illuminance of the lighting equipment (FIG. 19) in which dogs were each arrayed with zigzag. However, as the ratio of 50W White LED Unit Lighting decreases, it shows 3,840 lux at 270cm, indicating a decrease in illumination of 300 lux compared to the case of 10 50W Green LED Unit Lighting and 10 50W White LED Unit Lighting. This tendency showed the same behavior in the case of 14:6 (3,690lux @270cm) of FIG. 21, 16:4 (3,440lux @270cm) of FIG. 22, and 18:2 (3,260lux @270cm) of FIG.

Therefore, it is desirable to mix 50W Green LED Unit Lighting and 50W White LED Unit Lighting in any one ratio of 10:10, 11:9, 12:8, and 13:7.

In general, the reflector (reflector) 130 is used to prevent unnecessary energy consumption by sending light only to a necessary area, and to implement various light distributions capable of matching the illuminance of a desired location with only a minimum total amount of light.

23 shows a state in which a reflector (reflector) 130 is not attached to a 1kW Inspection LED lighting fixture arrayed with 20 50W Green LED Unit Lighting (All Green), as in both 50W unit lighting and 1kW Inspection LED lighting. Similarly, the illuminance gradually decreased with the distance at the measurement distance and at all measurement angles. However, even at a measuring distance of 210 cm, it shows 4,960 lux, which far exceeds the final target of 150 cm 4,00 lux, so even if a reflector (reflector) 130 is not attached, it is sufficient in terms of illuminance.

24 shows a reflector (reflector) 130 with a reflection angle of 30° made of stainless steel attached to a 1kW Inspection LED lighting fixture arrayed with 20 50W Green LED Unit Lighting (All Green), measured within a reflection angle of 30°. In the case of 0° and 22.5°, compared to the state in which the reflector (reflector) 130 is not attached (FIG. 23), 4,300 lux was displayed at 240 cm, indicating a high illuminance of about 550 lux. However, at an angle greater than 30° of reflection angle, it was found that the illuminance was rather low (2,140 lux in the case of 45° at a measuring distance of 240 cm, which is 780 lux lower than that of the non-attached case). These results suggest that it is possible to adjust light distribution characteristics such as illuminance by adjusting the reflection angle of the reflector (reflector) 130.

FIG. 25 shows a 1kW Inspection LED lighting fixture with a reflector (reflector) 130 having a reflection angle of 55°. When measured within a reflection angle of 55°, the reflector (reflector) 130 is not attached (FIG. 23 It was found that the illuminance slightly higher than) and at an angle greater than the reflection angle of 55°, the illuminance decreases, and these results show similar results even when the reflector (reflector) 130 (FIG. 26) with a reflection angle of 80° is attached. Done.

The 1kW-class mixed-light lighting according to the present invention can have an illuminance of 40,000 lux or more (@1.5m directly below) in a single configuration, and can be connected to multiple units in an extended type, thereby satisfying the illuminance and environmental temperature required in the field. There will be. In addition, as a lighting device to secure visibility, it will contribute to improving camera visibility even in adverse conditions such as tunnels, underwater, dust, rain, etc.

The possibility of commercial use of LED lighting can be increased because a small PSU (Power Supply Unit) integrated high-power lighting is possible, and the developed lighting equipment is a platform that can convert from mixed light to white light or single colored light, so it is possible to use various industrial sites. And it is possible to create an application market such as road lighting as it can be expanded to the environment.

In addition, by replacing commercial high-power halogen lamps with LED lighting, it will be possible to significantly accelerate the commercialization of high-energy-saving safety lighting.

Meanwhile, the above-described embodiments of the present invention can be written as a program that can be executed on a computer, and can be implemented in a general-purpose digital computer that operates the program using a computer-readable recording medium. The computer-readable recording medium is a magnetic storage medium (e.g., ROM, floppy disk, hard disk, etc.), optical reading medium (e.g., CD-ROM, DVD, etc.), and carrier wave (e.g., via the Internet). Transfer).

As described above, according to the lighting device according to the present invention, it is suitable for monitoring by maximizing camera visibility in a high-temperature work environment, and has a long lifespan and high energy efficiency.

So far, the present invention has been looked at around its preferred embodiments. Those of ordinary skill in the art to which the present invention pertains will be able to understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative point of view rather than a limiting point of view. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

100: LED module light source 110: driving unit
120: radiator 130: reflector

Claims (6)

LED module light source in which green LED module and white LED module are mixed and arranged in a predetermined ratio; And
Lighting device comprising a driving unit for driving the LED module light source.
The method of claim 1,
A lighting device further comprising a reflector for focusing light from the LED module light source and adjusting an irradiation angle.
The method of claim 1,
Lighting of the LED module light source is a lighting device capable of dimming 50 to 100% light output.
The method of claim 1,
The LED module light source is a lighting device in which the green LED module and the white LED module are mixed in any one ratio of 10:10, 11:9, 12:8, and 13:7. The method of claim 1,
Lighting device further comprising a heat dissipation unit for dissipating heat generated by the LED module light source.
The method of claim 1,
A lighting device in which the green LED module and the white LED module are arranged in any one of zigzag, left and right, up and down.

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