WO2015080091A1

WO2015080091A1 - Led illumination system

Info

Publication number: WO2015080091A1
Application number: PCT/JP2014/081078
Authority: WO
Inventors: 拓史鎌田
Original assignee: 株式会社Ｍａｓｓ
Priority date: 2013-11-26
Filing date: 2014-11-25
Publication date: 2015-06-04
Also published as: JPWO2015080091A1

Abstract

Disclosed is an illumination system that enables switching an illumination fixture of a refrigerator shelf from using a fluorescent lamp to using an identically shaped fluorescent-lamp-shaped LED lamp without removing a product. The LED illumination system uses a plurality of fluorescent-lamp-shaped LED lamps that do not incorporate a power source, wherein the LED illumination system comprises a single LED power source unit that supplies current in common to each of the plurality of LED lamps, and the LED power source unit comprises constant current drivers that are respectively electrically connected to the plurality of LED lamps and of which the quantity corresponds to that of the plurality of LED lamps, and a constant voltage switching power source that imposes a constant voltage on each of the constant current drivers.

Description

LED lighting system

The present invention relates to an illumination system using LEDs (light emitting diodes), and more preferably, an LED illumination comprising a plurality of illumination devices using LEDs and a single power supply unit that controls the plurality of illumination devices in an integrated manner. About the system.

In convenience stores, supermarkets, and other stores, when foods that require refrigeration are displayed side by side, several shelves are provided so that cold air is supplied to the products on each shelf and the products are maintained in the desired refrigerated state. The front open type refrigerated shelves and the sealed refrigerated cases (these are collectively referred to as “refrigerated shelves” in the present specification) are used. Above each shelf of the refrigerated shelf, a light source is provided for illuminating the product, and in most cases, a fluorescent lamp is used as the light source.

In recent years, LEDs have advantages over fluorescent lamps in terms of excellent energy efficiency, that is, a lumen value for power consumption, and long-term durability, and replacement with LEDs has gradually spread in fields where conventional fluorescent lamps have been used. It's getting on. In addition to replacing the lighting fixture itself with a new lighting fixture for LED, a fluorescent lamp (for example, a straight tube type fluorescent lamp) can be used by diverting the lighting fixture used so far (for example, a ceiling-embedded fluorescent lamp). In place of this, the same type of LED lamp is also attached.

However, in the latter case, a lighting fixture using a fluorescent lamp is supplied with power to the socket via a fluorescent ballast, and the current and voltage from the ballast are the current for lighting the LED, Since it is completely different from the voltage, the LED element cannot be electrically connected directly to the socket of the lighting fixture.

There are two types of fluorescent lamp type LED lamps: one with a built-in LED power supply unit (built-in LED lamp) and one without a built-in power supply unit (non-powered LED lamp). There is. In the case of fluorescent lamp type LED lamps with a built-in power supply unit, many lamps are directly connected to a 100V or 200V indoor AC power source and lit. Therefore, to replace this with a conventional fluorescent lamp , Bypassing the ballast so that power can be supplied directly from the indoor wiring to the socket, bypassing the ballast provided in the luminaire body. However, the fluorescent lamp type LED with a built-in power supply unit is expensive due to the included power supply unit, and the LED also has a life of about 40,000 hours. There is a problem that the cost advantage of switching to the LED lamp is lost, and the switching does not proceed smoothly.

A type of fluorescent lamp type LED lamp with a built-in power supply unit that can be used via a ballast has also appeared. In this type, no work is required to switch from fluorescent lamps to LED lamps, but in addition to the above-mentioned cost increase caused by the power supply unit, the continuously used ballast consumes extra power. , Energy efficiency will be low. In addition, even if there is a malfunction due to aging deterioration of the ballast, it is difficult to influence the lighting of the LED until it is completely broken, and therefore it is easily overlooked, resulting in the risk of ignition. Also, if the ballast breaks, the LED will not light up suddenly, which will necessitate unexpected construction in the medium term. Furthermore, fluorescent ballasts include glow ballasts and rapid ballasts as magnetic circuit ballasts, and electronic fluorescent ballasts and high frequency lighting ballasts as electronic ballasts. If it is going to be connected to, the LED lamp side built-in power supply unit must also check the type and standard of the ballast on the luminaire body side, and select an LED lamp with a built-in power supply unit that can handle it. If the LED lamp to be installed is mistaken, it may cause a failure or a fire accident. Therefore, switching from a conventional fluorescent lamp to a fluorescent lamp type LED lamp with a built-in power supply unit that can be used via a ballast is advantageous in terms of reducing power consumption, suppressing heat generation, and extending the service life. On the contrary, there is a risk of fire, sudden failure at a later date, and switching to another system due to construction, which is unrealistic.

In the case of a fluorescent lamp type LED lamp with a non-built-in power supply unit, it is necessary to disconnect the fluorescent light ballast of the luminaire body, attach a power supply unit for the LED, and connect the wiring to the indoor wiring and socket. is there. Conventionally, a fluorescent lamp type non-power built-in type LED lamp is configured such that an independent power supply unit is provided on the main body side for each lamp.

When switching the lighting fixtures installed on a conventional refrigerated shelf from one using a straight tube type fluorescent lamp to one using the same type of LED lamp, a built-in power supply unit (however, it does not support connection to a ballast) ) Requires construction that includes the following series of operations.
1) Remove the top lid of the refrigerator shelf.
2) Check the wiring connected from the ballast to the socket.
3) Disconnect the power line to the ballast from the ballast side root.
4) Remove all items from the refrigerator shelf.
5) Remove all shelves.
6) Cut the wiring connected to the socket for each shelf.
7) Remove the fluorescent lamp.
8) Check the wiring from the back side of each shelf for each fluorescent lamp.
9) Replace the sockets with dedicated ones for each shelf and connect the sockets.
10) Replace the removed shelf.
11) Fix the wiring along the shelf for each LED lamp.
12) Install the LED lamp.
13) Confirm lighting.
14) Replace all shelves.
15) Return the product.

In this series of operations, removal of all shelves is necessary to replace the sockets with dedicated sockets and to reconfigure the connections on the back side of the shelves. For this reason, avoid removing all items from the refrigerated shelves. I can't. Since the work of 5) to 15) after taking out the goods is performed for all the shelves, it takes a certain amount of time, and the taken out refrigerated goods are moved to another refrigeration facility during the period, It must be clearly separated and temporarily stored so as not to mix with the product. However, it is often difficult to secure a sufficient space in the refrigeration facility for this purpose in actual stores, which is a factor that hinders smooth switching from fluorescent lamps to LEDs.

In addition, when the LED lamp to be switched is a non-built-in power supply unit type, it is necessary to provide a power supply unit on the luminaire main body side for each LED lamp. Therefore, it is necessary to secure the space in the refrigeration facility for taking out all the products on the shelf and temporarily refrigerated storage, and this is the bottleneck, and the switching to the LED does not proceed smoothly as described above.

In the above-described background, the present invention can easily and quickly switch the refrigeration shelf lighting fixture from the one using the fluorescent lamp to the one using the same type of fluorescent lamp type LED lamp without requiring the removal of the product. The purpose is to provide a lighting system.

The present inventor has found that the above-mentioned problems can be achieved by using an LED lighting system having the following characteristic configuration, and based on this, the present invention has been completed.

1. An LED illumination system using a plurality of fluorescent lamp type LED lamps with no built-in power supply, comprising a common LED power supply unit for supplying current to each of the plurality of LED lamps. A power supply unit includes a corresponding number of constant current drivers electrically connected to each of the plurality of LED lamps, and one constant voltage switching power supply that applies a constant voltage to each of the constant current drivers. LED lighting system.
2. The LED lighting system according to 1 above, wherein the number of the constant current drivers is 2 to 6.
3. 3. The LED illumination system according to 1 or 2 above, wherein the fluorescent lamp type is a straight tube type.
4). 4. The LED lighting system according to any one of 1 to 3 above, wherein the LED lamp is attached to each of a plurality of shelves in a refrigerated shelf.
5. A method of remodeling an installed refrigeration shelf using a plurality of fluorescent lamps as a light source for illumination into a refrigeration shelf using a plurality of LED lamps with no built-in power source, which is a fluorescent lamp type, as a light source for illumination. The fluorescent ballast provided in the LED is separated from the input line from the indoor electrical wiring and from the output line to each socket that was for each fluorescent lamp, and one LED is used instead of the fluorescent ballast. A power supply unit for connecting the input line from the indoor wiring and the output line to each socket for each fluorescent lamp, wherein the LED power supply unit includes the plurality of LEDs. A constant number of constant current drivers electrically connected to each of the lamps via the socket, and one constant voltage switching power supply for applying a constant voltage to each of the constant current drivers. Method.
6). 6. The method according to 5 above, wherein the number of constant current drivers is 2 to 6.
7). The method according to 5 or 6 above, wherein the fluorescent lamp type is a straight tube type.
8). 8. The method according to any one of 5 to 7 above, wherein the LED lamp is attached to each of the plurality of shelves in the refrigeration shelf.

According to the present invention configured as described above, when a store such as a convenience store or a supermarket is switched from an existing refrigerated shelf using fluorescent lighting to one using LED lighting, each shelf is removed as in the past. There is no need to replace the fluorescent lamp ballast at the top of the refrigerated shelf with a single LED power supply unit, and the fluorescent lamp can be switched to an LED lamp. The work can be completed in a very short time. It becomes possible. In addition, since the construction is only replacement of the LED power supply unit and replacement of the lamp around the fluorescent light ballast at the top of the refrigeration shelf (the product is not displayed on the top), Since there is no need to take out the products on the shelf and the work is completed in a very short time, there is no need to secure a space for temporary storage of the products in a separate refrigeration facility. This makes it possible to easily and quickly complete the switchover work, and can be easily remodeled into a refrigerated shelf with long life, low power consumption, and low running costs.

FIG. 1 is a schematic diagram of an LED illumination system of the present invention.

In the specification, the “fluorescent lamp type” means a lamp having substantially the same external shape as that of a conventional fluorescent lamp and can be directly fitted into a socket of a conventional fluorescent lamp. There are various types of “fluorescent lamp type” such as a straight tube type and a round type, and in the present invention, the LED lamp only needs to be substantially the same as a conventional fluorescent lamp in terms of external shape. Therefore, the “fluorescent lamp type” is not theoretically limited to a specific shape, but is practically a straight tube type in most cases because of its use in a refrigerator shelf.

In this specification, “LED power supply unit” means a corresponding number of constant current drivers electrically connected to each of a plurality of LED lamps, and one constant voltage that applies a constant voltage to each of the constant current drivers. A switching power supply.

Here, "constant voltage switching power supply" means a switching type DC stabilized power supply (SMPS), and a power supply that stabilizes the output by controlling the on / off time ratio (duty ratio) of the semiconductor switch element by a feedback circuit. This device is widely used and has high power conversion efficiency. The SMPS can include a transformer. The SMPS can also include an EMI (Electromagnetic Interference) filter, and usually includes it. There are various types of SMPS (step-down type, step-up type, step-up / step-down type, etc.), and those suitable for the characteristics of the constant current driver to be connected can be appropriately selected and used.

In SMPS, a number of constant current drivers corresponding to the number of LED lamps to be attached are connected in parallel with each other. The constant current driver itself is well known and may be selected so as to match the electrical characteristics of the LED lamp to be mounted.

Each LED lamp without a built-in power supply has a power and a number of LED elements corresponding to a desired lumen value, and the arrangement of these LED elements can be in series or in parallel.

The number of LED lamps is determined according to the number of shelves in the refrigerated shelves to which they are attached and the number of fluorescent lamps in each shelf, and usually falls within the range of 2 to 6, so the number of constant current drivers is also Depending on each case, the number can be 2 to 6, but is not limited thereto.

In conventional refrigerated shelves, fluorescent light ballasts are usually provided at the top, that is, at the top of the top shelf, which can be easily accessed by opening the top plate. In addition, a line from the ballast extends from that portion to the fluorescent lamp socket on each shelf. In order to replace the existing refrigeration shelf fluorescent lighting device with the LED lighting system of the present invention, the fluorescent ballast is separated from the input line from the indoor electrical wiring and the output line to the fluorescent lamp socket, respectively. The indoor electrical wiring is simply connected to the input side of the LED power supply unit, and the output line going to each socket for fluorescent lamps is connected to the constant current driver.

In this way, it is only necessary to switch around the top fluorescent light ballast without touching the shelves of each refrigerated shelf, so the construction is completed in a very short time, and the products on the shelf are temporarily No need to move for refrigerated storage.

Hereinafter, the present invention will be described more specifically with reference to examples. However, it is not intended that the present invention be limited to the examples.

FIG. 1 is a schematic diagram of an embodiment of the present invention. In the figure, 1 is a constant voltage output circuit of a constant voltage switching power supply, 2 is a transformer, and 3 is an EMI filter, which can be appropriately selected from those well known to those skilled in the art. 1 to 3 constitute a constant voltage switching power supply (SMPS). 4 is a constant current driver, and 5 is a straight tube fluorescent lamp type LED module. The constant voltage switching power supply has an input voltage of 100 to 240 V (AC) and an output voltage of 40 V (DC), and this voltage is applied in parallel to each of the six constant current drivers 4. Each of the constant current drivers 4 supplies a current to a corresponding one of the six straight tube fluorescent lamp type LED modules with an output of 0.3 mA. Each LED module has the same outer shape as that of the straight tube type fluorescent lamp including the terminal shape, and is configured so that it can be directly fitted into a socket for the straight tube type fluorescent lamp. The number of constant current drivers 4 and LED modules are both six in this embodiment, but are changed according to the number of straight tube fluorescent lamps provided in the original refrigeration shelf.

照明 Switching work from the fluorescent lamp to the LED lamp until then can be done as follows. That is, the power supply to the refrigeration shelf is turned off, the top plate at the top of the refrigeration shelf is removed, and the fluorescent light ballast is exposed. Disconnect the ballast from the electrical system by cutting both the input line to the ballast and the input line extending from the ballast to each socket near the ballast to disconnect the ballast from the electrical system, and the constant voltage switching power supply and the constant current connected to it. Install the screwdriver in the open area around the fluorescent ballast. The input line is connected to the input side of the constant voltage switching power supply, and the output line is connected to each of the constant current drivers. Then, the work is completed by replacing the top plate, replacing the fluorescent lamp with the LED module, and turning on the power to the refrigerator shelf. Since these operations are simple and the time to complete the work is very short, it is not necessary to take out the products on each shelf and temporarily store them in the cold during the work.

The present invention makes it possible to switch an existing refrigerated shelf using a fluorescent lamp to one using an LED for lighting in a store in a convenience store, a supermarket, etc. in an extremely short time compared to the conventional case. It is useful in that. In addition, it is not necessary to secure separate refrigeration equipment space for other refrigerated shelves during the switching work, and there is no restriction on such space, long life, low power consumption, and low running cost. It is even more useful in allowing easy modifications to refrigerated shelves.

1 Constant voltage output circuit 2 Transformer 3 EMI filter 4 Constant current driver 5 Straight tube fluorescent lamp type LED module

Claims

An LED illumination system using a plurality of fluorescent lamp type LED lamps with no built-in power supply, comprising a common LED power supply unit for supplying current to each of the plurality of LED lamps. A power supply unit includes a corresponding number of constant current drivers electrically connected to each of the plurality of LED lamps, and one constant voltage switching power supply that applies a constant voltage to each of the constant current drivers. LED lighting system.
The LED lighting system according to claim 1, wherein the number of the constant current drivers is 2 to 6.
The LED illumination system according to claim 1 or 2, wherein the fluorescent lamp type is a straight tube type.
The LED lighting system according to any one of claims 1 to 3, wherein the LED lamp is attached to each of a plurality of shelves in a refrigerated shelf.
A method of remodeling an installed refrigeration shelf using a plurality of fluorescent lamps as a light source for illumination into a refrigeration shelf using a plurality of LED lamps with no built-in power source, which is a fluorescent lamp type, as a light source for illumination. The fluorescent ballast provided in the LED is separated from the input line from the indoor electrical wiring and from the output line to each socket that was for each fluorescent lamp, and one LED is used instead of the fluorescent ballast. A power supply unit for connecting the input line from the indoor wiring and the output line to each socket for each fluorescent lamp, wherein the LED power supply unit includes the plurality of LEDs. A constant number of constant current drivers electrically connected to each of the lamps via the socket, and one constant voltage switching power supply for applying a constant voltage to each of the constant current drivers. , Method.
The method according to claim 5, wherein the number of constant current drivers is 2-6.
The method according to claim 5 or 6, wherein the fluorescent lamp type is a straight tube type.
The method according to any one of claims 5 to 7, wherein the LED lamp is attached to each of a plurality of shelves of the refrigeration shelf.