JP2009289653A - Led lighting device, indoor environment control system, and indoor environment control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED lighting device securing excellent air-conditioning efficiency by surely removing exhaust heat from LEDs to enhance cooling performance, improving energy efficiency by accurately utilizing exhaust heat for room temperature control, and contributing to the creation of a comfortable indoor environment with minimum power consumption, and to provide an indoor environment control system. <P>SOLUTION: A duct 30 having an outdoor side heat exhaust port 31 and an indoor side heat exhaust port 32 is mounted to the ends of LED luminaires 1, 2, and an exhaust heat conveying direction is switched to the outdoor side heat exhaust port 31 side or to the indoor side heat exhaust port 32 by a duct control part 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for effectively using exhaust heat of an LED lighting device to maintain the temperature of an indoor environment, and in particular, an LED lighting device, an indoor environment control system in which an LED lighting device and an air conditioner are linked, and an indoor environment control. It is about the method.

  In recent years, technologies for improving the indoor environment of offices and the like have been diversified, but the basic elements for determining the indoor environment are still lighting equipment and air conditioning equipment. Therefore, in order to obtain an indoor environment with high workability, lighting equipment that provides sufficient brightness and an air conditioner that maintains the room at an appropriate temperature are indispensable. However, since the lighting equipment and the air conditioning equipment are each prepared for a single purpose, there was no cooperation between them.

  Rather, from the viewpoint of air conditioning control, the heat generated by the lighting equipment locally raises the room temperature, so it can be simply canceled during cooling, but this has been a factor that reduces the accuracy of room temperature measurement during heating. As a result, the air conditioning equipment maintains a high output state even though the actual room temperature is high. Therefore, there is a problem that heating is excessive, air conditioning efficiency is reduced, and power consumption is increased.

  In particular, when the LED lighting apparatus is used as a lighting facility, exhaust heat of the LED has been a problem. The LED illumination device is an illumination device using a plurality of LEDs as a light source, and has advantages such as less power consumption than a fluorescent lamp as well as an incandescent lamp, long life, and maintenance-free. Therefore, it attracts attention as a lighting fixture that replaces a fluorescent lamp as direct illumination, and the demand for LED lighting devices is increasing along with the progress of visible light communication technology and the like.

By the way, in the LED lighting device, it is pointed out that heat management is difficult because the exhaust heat of the LED is large when trying to obtain a sufficient amount of light to brighten the entire space. Among these, when the LED lighting device is used as indirect light illumination, exhaust heat is high. Therefore, various techniques for improving the cooling performance have been proposed in the conventional LED lighting device (for example, Patent Document 1).
JP 2008-98020 A

  However, the conventional LED lighting device has the following problems. That is, as a method for removing the exhaust heat from the LED lighting device, a natural air cooling method using a heat sink structure or the like is the mainstream, and the forced air cooling method for forcibly removing the exhaust heat using a duct has a complicated configuration. Because it was easy to make it, it was not adopted.

  Although natural air cooling has the advantage of a simple configuration, it is difficult to demonstrate sufficient cooling performance when there are many LED lighting devices installed or when the LED lighting devices are close to each other. It was. Further, in the forced air cooling method, exhaust heat is surely removed, so the cooling performance of the LED lighting device is high, but the removed exhaust heat must be released outdoors. That is, as the number of LED lighting devices increased, the thermal energy discharged out of the system increased in proportion to the number of LED lighting devices. Thereby, the point that energy efficiency falls has been a problem.

  The present invention has been proposed to solve the above-mentioned problems, and its purpose is to reliably remove the exhaust heat from the LED to enhance the cooling performance and ensure excellent air conditioning efficiency, An object of the present invention is to provide an LED lighting device and an indoor environment control system that improve energy efficiency by accurately utilizing exhaust heat for room temperature control and contribute to the establishment of a comfortable indoor environment with minimum power consumption.

  In order to achieve the above object, the present invention provides an LED lighting device using an LED as a light source, wherein a duct for transporting exhaust heat exhausted by the LED is installed, and the exhaust heat is transmitted to the duct outdoors. A duct control means for forming an outdoor heat exhaust port for flowing into the room and an indoor heat exhaust port for flowing the exhaust heat into the room, and further switching a transport direction of the exhaust heat flowing through the duct between the outdoor side and the indoor side Is featured.

  In the LED lighting device of the present invention having the above-described configuration, the exhaust heat exhausted by the LEDs can be forcibly removed in the duct, so that the number of LED lighting devices installed is large or the installation distance between the LED lighting devices is short. Even with the layout, excellent cooling performance can be exhibited. For this reason, the room temperature does not rise locally due to exhaust heat from the LED, and the accuracy of room temperature measurement does not decrease. Therefore, there is no fear that the air conditioning efficiency is reduced due to excessive heating.

  In the LED lighting device of the present invention, the duct control means can easily adjust the amount of exhaust heat supplied indoors by switching the transport direction of exhaust heat flowing through the duct between the outdoor side and the indoor side. . Thereby, the exhaust heat from the LED lighting device can be used as thermal energy for room temperature control, and excellent energy efficiency can be exhibited.

  The present invention also includes an indoor environment control system provided with the LED lighting device having the duct control means, a temperature sensor for measuring room temperature, and an air conditioner for adjusting the room temperature. In this indoor environment control system, the duct control means of the LED lighting device is configured to control the transport direction of exhaust heat flowing to the outdoor side or the indoor side according to the room temperature measured by the temperature sensor. When the room temperature measured by the temperature sensor deviates from a desired range, an activation command is output to the air conditioner, and when the room temperature measured by the temperature sensor falls within the desired range, An air conditioning control means for outputting a stop command to the air conditioner is provided.

  Furthermore, the present invention can also be understood as an indoor environment control method using the LED illumination device having the duct control means, a temperature sensor for measuring room temperature, and an air conditioner for adjusting the room temperature. In this indoor environment control method, based on the room temperature measurement step of measuring the room temperature with the temperature sensor, and the room temperature measured in the room temperature measurement step, the direction of exhaust heat flowing to the outdoor side or the indoor side by the duct control means is determined. An exhaust heat direction control step to be controlled; an air conditioning start step for starting the air conditioner when the room temperature measured in the room temperature measurement step deviates from a desired range; and a room temperature measured in the room temperature measurement step is a desired range. The air-conditioning stop step of stopping the air-conditioning device when it falls within the range is included.

  According to the present invention, a duct that conveys the exhaust heat exhausted by the LED is installed, and the LED control means switches the transport direction of the exhaust heat flowing through the duct between the outdoor side and the indoor side by the duct control means. It is possible to accurately use the exhaust heat from the room temperature control, improve energy efficiency, and contribute to the establishment of a comfortable indoor environment with minimum power consumption.

(1) Configuration of Present Embodiment Hereinafter, the configuration of a representative embodiment of the present invention will be specifically described with reference to FIGS. 1 and 2 are block diagrams showing the overall configuration of the indoor environment control system according to the present embodiment. FIG. 1 shows an operation example when the room temperature is high in summer or the like, and FIG. 2 shows an operation example when the room temperature is low in winter or the like. Is shown. FIG. 3 is a block diagram showing the configuration of the control device of this embodiment, and FIG. 4 is a flowchart of this embodiment.

(1-1) System Overview As shown in FIGS. 1 and 2, the indoor environment control system according to the present embodiment includes a direct light LED lighting device 1 and an indirect light LED lighting device 2 that constitute an LED lighting device. The duct control unit 3, the system control device 4, an air conditioner that is an air conditioner 5, and a temperature sensor 6 for measuring room temperature are included.

  These components 1 to 6 are connected via a common power line 12, and among these, the LED lighting fixtures 1, 2, the duct control unit 3, and the air conditioner 5 are power line communication built in the system control device 4. It is remotely controlled by the system controller 4 via the unit 9 (shown in FIG. 3). That is, a signal such as a control command exchanged between the system control device 4 and each unit is transmitted through the power line 12, and the LED lighting fixtures 1, 2, the duct control unit 3, and the air conditioner 5 are compatible with power line communication. It is configured as equipment.

(1-2) LED lighting fixtures 1, 2
The direct light LED lighting apparatus 1 is an LED lighting apparatus that directly irradiates light, and is installed on the ceiling together with a diffusion cover and the like. Moreover, the indirect light LED lighting fixture 2 is an LED lighting fixture which irradiates indirect light, Comprising: It is installed in the wall surface and the back surface of furniture. These LED lighting fixtures 1 and 2 are provided with a dimming unit and configured to be dimmable.

  A duct 30 is attached to the ends of the LED lighting fixtures 1 and 2. The duct 30 conveys the exhaust heat from the LED lighting fixtures 1 and 2 as exhaust heat by a blower means (not shown), an outdoor heat exhaust port 31 for flowing the exhaust heat to the outdoor side, and exhaust heat. The indoor side heat exhaust port 32 is formed to flow the air toward the indoor side. The heat exhaust ports 31 and 32 are provided with shutter portions 31a and 32a that can be freely opened and closed.

  The shutter units 31 a and 32 a are electrically connected to the duct control unit 3 and configured to be opened and closed by a control signal from the duct control unit 3. That is, the duct control unit 3 controls the direction of transporting exhaust heat by switching the transport direction of exhaust heat flowing through the duct 30 to the outdoor side heat exhaust port 31 side or the indoor side heat exhaust port 32. It is. More specifically, the duct control unit 3 receives a duct switching command from the duct switching unit 8 of the system control device 4 to be described later, and controls the opening / closing operation of the shutter units 31a and 32a based on the content of the command. Yes.

(1-3) Control device 4
Next, the configuration of the system control device 4 will be described with reference to FIG. As shown in FIG. 3, the power line communication unit 9 is installed in the system control device 4. The power line communication unit 9 includes a light source ratio adjustment unit 7, a duct switching unit 8, a room temperature determination unit 10, and an air conditioner control unit. 11 is connected. Among these, the light source ratio adjustment part 7 is a part which adjusts the light source ratio of the direct light LED lighting fixture 1 and the indirect light LED lighting fixture 2. FIG.

  The duct switching unit 8 is a part that outputs a duct switching command to the duct control unit 3. In addition, as the content of the duct switching command output by the duct switching unit 8, either one of the shutter units 31a and 32a may be completely opened and the other may be completely closed. It does not matter if the contents are specified.

  The room temperature determination unit 10 takes in the room temperature measured by the temperature sensor 6 and determines whether the room temperature measured by the temperature sensor 6 deviates from a preset setting range or falls within the set range. It is a part to judge. The room temperature setting range here is generally an appropriate room temperature range for each season.

  When the room temperature determination unit 10 determines that the room temperature measured by the temperature sensor 6 deviates from the set range, the air conditioner control unit 11 outputs an activation command to the air conditioner 5, and the room temperature measured by the temperature sensor 6 is When the room temperature determination unit 10 determines that the temperature is within the set range, a stop command is output to the air conditioner 5. Note that each of the units 7 to 11 included in the system control device 4 is specifically realized by a microcomputer that stores a program specialized for the indoor environment control system of the present embodiment.

(2) Indoor environment control method of this embodiment The indoor environment control method of this embodiment which has the above structure is demonstrated using the flowchart of FIG. First, the room temperature is measured by the temperature sensor 6 (room temperature measurement step S01) and sent to the room temperature determination unit 10 of the system control device 4 to determine whether or not the measured room temperature is within the set range (room temperature determination step). S02).

  If the determination result by the room temperature determination unit 10 is “measured room temperature is within set range” (Yes in step S02), the process returns to room temperature measurement step S01. On the other hand, when the room temperature determination unit 10 determines that the room temperature measured by the temperature sensor 6 is outside the set range (No in step S02), the process proceeds to the light source ratio adjustment confirmation step S03. Here, it is confirmed whether or not adjustment (including readjustment) of the light source ratio of the direct light LED lighting fixture 1 and the indirect light LED lighting fixture 2 is possible.

  And if adjustment of the light source ratio in the LED lighting fixtures 1 and 2 is possible (Yes of step S03), the light source ratio adjustment part 7 will adjust the light source ratio of the LED lighting fixtures 1 and 2 (light source ratio adjustment step). S04). When the adjustment of the light source ratio of the LED lighting fixtures 1 and 2 is completed, the process returns to the room temperature measurement step S01.

  Moreover, if adjustment of the light source ratio of the LED lighting fixtures 1 and 2 is impossible (No in step S03), it is confirmed whether or not the transport direction of the exhaust heat by the duct 30 has been controlled (exhaust heat direction control confirmation step S05). ). Here, if the conveyance direction of the exhaust heat in the duct 30 is uncontrolled (No in step S05), the duct switching unit 8 outputs a duct switching command to the duct control unit 3 and receives the duct switching command. 3 performs an opening / closing operation of the shutter portions 31a and 32a to control the transport direction of the exhaust heat flowing out of the exhaust heat ports 31 and 32 (exhaust heat direction control step S06). When the control of the exhaust heat direction is completed, the process returns to the room temperature measurement step S01.

  If the transfer direction of the exhaust heat by the duct 30 has been controlled (Yes in step S05), the air conditioner control unit 11 outputs an activation command to the air conditioner 5 (air conditioner activation instruction step S07), and the air conditioner 5 is activated. Thereafter, the room temperature determination unit 10 takes in the room temperature from the temperature sensor 6 and determines whether the measured room temperature of the temperature sensor 6 is within the set range (room temperature determination step S08).

  If the room temperature determination unit 10 determines that the measured room temperature of the temperature sensor 6 is within the set range (Yes in step S08), the air conditioner control unit 11 outputs a stop command to the air conditioner 5 (air conditioner stop instruction step S09). ) The air conditioner 5 is stopped, and the process returns to the room temperature measurement step S01. On the other hand, when the room temperature determination unit 10 determines that the measured room temperature of the temperature sensor 6 is outside the set range (No in step S08), the process returns to the room temperature determination step S08.

(3) Operational effects of the present embodiment The operational effects of the present embodiment as described above are as follows. First, when the air conditioner 5 is mainly cooling, such as in summer, the system controller 4 is configured so that the direct light LED lighting device 1 is a main light source and the indirect light LED lighting device 2 with large exhaust heat is not used as much as possible. Is adjusted by the light source ratio adjusting unit 7.

  Moreover, the conveyance direction of the exhaust heat by the duct 3 is set to the outdoors. That is, a duct switching command is output from the duct switching unit 8 of the system control device 4 to the duct control unit 3, and the duct control unit 3 opens the shutter unit 31 a, and exhaust heat from the direct LED lighting fixture 1 is exhausted to the outdoor side. It flows from the hot mouth 31 outdoors. At this time, by closing the shutter portion 32a, exhaust heat is prevented from flowing into the room and an increase in room temperature is suppressed as much as possible (see FIG. 1).

  According to the LED lighting device in the present embodiment as described above, the exhaust heat exhausted by the LED can be forcibly removed in the duct 30, so that a local increase in room temperature due to the exhaust heat can be suppressed, and the room temperature rises during cooling. There is no need to offset. In addition, since the local rise in room temperature can be prevented by removing the exhaust heat, the room temperature can be measured with high accuracy during heating. Therefore, appropriate air conditioning can always be performed, and excellent air conditioning efficiency can be exhibited.

  In particular, when an LED lighting device is employed in an indoor environment such as an office office, a large number of LED lighting devices are required to brighten the entire space, and exhaust heat from the LED lighting device increases. Since the exhaust heat can be reliably removed, a system excellent in environmental harmony and economy can be realized.

  On the other hand, when the air conditioner 5 is mainly for heating, such as in winter, the indirect light LED lighting device 2 is used as a main light source, and if the light amount is insufficient, the direct light LED lighting device 1 is weakly emitted as an auxiliary light source. The light source ratio adjustment unit 7 of the system control device 4 adjusts so as to adjust the light intensity.

  Moreover, the conveyance direction of the exhaust heat by the duct 3 is set indoors. In the present embodiment, the duct control unit 3 controls the opening / closing operation of the shutter units 31a and 32b, so that the transfer direction of the exhaust heat flowing through the duct 30 can be easily switched between the outdoor side and the indoor side. That is, a duct switching command is output from the duct switching unit 8 of the system control device 4 to the duct control unit 3, and the duct control unit 3 closes the shutter unit 31a, thereby preventing outflow of exhaust heat to the outdoors. At the same time, the shutter portion 32a is opened, and the exhaust heat from the LED lighting devices 1 and 2 is flowed into the room from the indoor heat exhaust port 32 (see FIG. 2).

  In this way, by flowing a large amount of exhaust heat from the indirect light LED lighting device 2 through the indoor side heat exhaust port 32, it is possible to contribute to maintaining an appropriate room temperature even in winter. However, if the room temperature determination unit 10 determines that the measured room temperature is out of the set range, the air conditioner 5 can be immediately operated to immediately increase the room temperature to an appropriate temperature, thereby maintaining a comfortable indoor environment. can do.

  In the above embodiment, the duct control unit 3 can easily adjust the amount of exhaust heat supplied to the room by switching the transport direction of the exhaust heat flowing through the duct 30 between the outdoor side and the indoor side. Can be used appropriately and effectively for room temperature control. As a result, energy efficiency can be improved, and a comfortable indoor environment can be established with minimum power consumption.

  Furthermore, in the indoor environment control system according to the present embodiment, the LED lighting fixtures 1 and 2 and the duct control unit 3 included in the lighting equipment and the air conditioner 5 which is the air conditioning equipment can be remotely controlled using power line communication. Therefore, a network can be constructed simply by connecting the power line to the outlet, and no troublesome wiring work is required, which is economically advantageous.

(4) Other Embodiments The present invention is not limited to the above-described embodiment, and the shape, size, number of arrangements, and the like of each component can be changed as appropriate. The air conditioner 5 is an indirect light LED. You may comprise so that a wind direction may be adjusted as what has a heat source in the arrangement position of a lighting fixture. According to such an embodiment, the waste heat of the indirect light LED lighting apparatus is not wasted, so that the utilization efficiency of the waste heat can be increased. Further, the LED lighting apparatus may be used only for direct illumination, and the same effect can be obtained even if the indirect light LED lighting apparatus is replaced with an incandescent lamp.

The block diagram of typical embodiment which concerns on this invention. The block diagram of this embodiment. The principal part block diagram of this embodiment. The flowchart in this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Direct light LED lighting fixture 2 ... Indirect light LED lighting fixture 3 ... Duct control part 4 ... System control apparatus 5 ... Air conditioner 6 ... Temperature sensor 7 ... Light source ratio adjustment part 8 ... Duct switching part 9 ... Power line communication part 10 ... Room temperature Judgment part 11 ... Air-conditioner control part 12 ... Power line 30 ... Duct 31 ... Outdoor side heat exhaust port 32 ... Indoor side heat exhaust port 31a, 32a ... Shutter part

Claims (9)

An LED lighting device using an LED as a light source,
A duct for carrying the exhaust heat discharged from the LED is installed,
In the duct, an outdoor side heat exhaust port for flowing the exhaust heat outdoors and an indoor side heat exhaust port for flowing the exhaust heat indoors are formed,
The LED lighting device further comprises a duct control means for switching a transfer direction of the exhaust heat flowing through the duct between the outdoor side and the indoor side. A temperature sensor for measuring room temperature is provided,
The said duct control means is comprised so that the conveyance direction of the waste heat sent to the outdoor side or indoor side may be controlled according to the room temperature measured by the said temperature sensor. LED lighting device.   The LED lighting device according to claim 1, wherein the duct control unit is configured to be remotely controllable through a power line communication unit. The LED lighting device is composed of a direct light LED lighting device that directly emits light from a light source and an indirect light LED lighting device that emits indirect light from a light source,
The LED lighting device according to any one of claims 1 to 3, wherein a light source ratio adjusting means for adjusting a light source ratio between the direct light LED lighting fixture and the indirect light LED lighting fixture is connected. .   The LED lighting device according to claim 4, wherein the light source ratio adjusting unit is configured to be remotely controllable through a power line communication unit. In the indoor environment control system provided with the LED lighting device having the duct control means, a temperature sensor for measuring room temperature, and an air conditioner for adjusting the room temperature,
The duct control means is configured to control the transport direction of exhaust heat flowing to the outdoor side or the indoor side according to the room temperature measured by the temperature sensor,
When the room temperature measured by the temperature sensor deviates from a desired range, an activation command is output to the air conditioner, and when the room temperature measured by the temperature sensor falls within the desired range, the air conditioning An indoor environment control system comprising air conditioning control means for outputting a stop command to the apparatus. The LED lighting device is provided with an indirect light LED lighting device that emits at least indirect light,
The indoor environment control system according to claim 6, wherein the air conditioner is configured to adjust a wind direction on the assumption that a heat source is located at an arrangement position of the indirect light LED lighting apparatus.   The indoor environment control system according to claim 6 or 7, wherein the air conditioner and the LED lighting device are configured to be remotely controllable through a power line communication unit. In the indoor environment control method using the LED lighting device having the duct control means, a temperature sensor for measuring a room temperature, and an air conditioner for adjusting the room temperature,
A room temperature measuring step of measuring room temperature by the temperature sensor;
Based on the room temperature measured in the room temperature measurement step, an exhaust heat direction control step for controlling the transport direction of the exhaust heat flowing to the outdoor side or the indoor side by the duct control unit;
When the room temperature measured in the room temperature measurement step deviates from a desired range, an air conditioning start step for starting the air conditioner;
An indoor environment control method comprising: an air conditioning stop step of stopping the air conditioner when the room temperature measured in the room temperature measurement step falls within a desired range.

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