WO2012137964A1

WO2012137964A1 - Led illuminating lamp, and led illuminating device and led illuminating system which comprise same

Info

Publication number: WO2012137964A1
Application number: PCT/JP2012/059621
Authority: WO
Inventors: 青木　昇; 直次渡辺
Original assignee: 株式会社ワシノミヤ電子; 株式会社Ｋａｎｋｙｏ; 株式会社前川電気
Priority date: 2011-04-07
Filing date: 2012-04-09
Publication date: 2012-10-11
Also published as: TW201245619A; JPWO2012137964A1

Abstract

The present invention provides an LED illuminating lamp attachable to a rapid-start appliance for illumination without using a switching control-type rectifier circuit, and an LED illuminating device and an LED illuminating system which comprise the LED illuminating lamp. The present invention uses an LED illuminating lamp comprising: first and second AC input pins which are provided at one end; third and fourth AC input pins which are provided at the other end; first to fourth bridge rectifier circuits which have one AC terminals connected to the first to fourth AC input pins and the other AC terminals sharing a common line and connected to each other; a first LED light-emitting circuit which has an LED light-emitting element connected to the DC terminal side of the first or second bridge rectifier circuit so as to be able to emit light; and a second LED light-emitting circuit which has an LED light-emitting element connected to the DC terminal side of the third or fourth bridge rectifier circuit so as to be able to emit light.

Description

LED illumination lamp, and LED illumination apparatus and LED illumination system having the same

The present invention relates to an LED illuminating lamp using a light emitting diode (hereinafter referred to as LED), and more specifically, an LED that can be attached to and detached from an already installed fluorescent lamp illuminating device and can be used in place of the fluorescent lamp. Related to lighting. The present invention also relates to an LED illumination device having the LED illumination lamp.

Furthermore, the present invention relates to an LED illumination system having an LED illumination lamp using a light emitting diode. More specifically, the present invention relates to an LED illumination system that uses an LED illumination lamp that can be used in place of a fluorescent lamp and can adjust brightness.

Fluorescent lamps are widely used as lighting lamps in offices and the like because they have less glare than incandescent bulbs, have high luminous efficiency, and have a long lifetime. A fluorescent lamp is composed of a vacuum glass tube in which a fluorescent material is applied in a tube and electrodes attached to both ends. By applying a voltage to the electrodes on both ends, a gas discharge occurs and light is emitted. To emit. The vacuum glass tube contains a small amount of mercury vapor and a small amount of argon gas for facilitating discharge.

Fluorescent lamps constructed in this way have a problem that mercury vapor must be sealed in a vacuum glass tube as described above, making it difficult to manufacture. In addition, the life of fluorescent lamps is not so long, and there is a problem that flickering occurs when the life is approaching. It was not enough from the viewpoint of power consumption.

Therefore, in recent years, LED illumination lamps using LEDs as light sources have attracted attention. LED illumination lamps are far superior to fluorescent lamps in terms of power consumption and lifetime. In particular, if an LED illuminating lamp that maintains the appearance of a fluorescent lamp can be attached to an existing apparatus for illuminating a fluorescent lamp instead of the fluorescent lamp, the advantage is great.

However, existing fluorescent lighting devices have different lighting methods such as a glow starter type, a rapid start type, and an inverter type.

A glow starter-type fluorescent lamp lighting fixture is generally composed of a ballast and a glow starter. A current is caused by a discharge generated inside the glow starter, and the filament is lit by preheating the filaments at both ends of the fluorescent lamp. Is. The rapid start type fluorescent lamp lighting fixture has a ballast with a winding for preheating the filaments at both ends of the fluorescent lamp, and preheats the filament to generate a weak discharge between the starting auxiliary conductors. Thus, the fluorescent lamp is turned on. Inverter-type fluorescent lamp lighting devices illuminate a fluorescent lamp by rectifying and smoothing a commercial AC power source and converting it into an alternating current with a high frequency of 20000-100,000 Hz.

In this way, the input voltage, current, and frequency differ depending on the lighting method even if the appliances have the same rated voltage. Moreover, even with the same lighting method, the characteristics of voltage, current, and frequency vary little by manufacturer. Furthermore, there is a current situation that which of the terminal pin pairs at both ends of the fluorescent lamp is connected to the power source depends on the manufacturer of the fluorescent lamp illumination device.

In Patent Document 1, the first rectifier circuit is connected to the first and second electrode pins arranged at one end, and the second and third electrode pins arranged at the other end are connected to the second rectifier circuit. An LED lighting device is described in which a rectifier circuit is connected and a DC terminal of each rectifier circuit is connected to an LED. Then, by connecting the first impedance circuit between the first electrode pin and the second electrode pin, and connecting the second impedance circuit between the third electrode pin and the fourth electrode pin, this LED illumination device can be used. It can be used by being mounted on an inverter-type lighting fixture. Patent Document 2 also describes an LED illumination lamp including a predetermined impedance element.

On the other hand, on the ceilings of offices, shops, factories, etc., there are many fluorescent lighting fixtures for two lamps that can mount two fluorescent lamps in parallel. In many cases, the entire lighting is used. However, since energy saving has recently been screamed, there are many requests that only one of the two fluorescent lamps be removed and turned off when not much brightness is required by illumination, such as in the daytime.

However, in many cases, the fluorescent lamp lighting fixtures for two lamps are in series, and if one of the two fluorescent lamps is removed, the remaining one fluorescent lamp is turned off. Therefore, it is impossible to realize a state in which only one fluorescent lamp is lit.

In Patent Document 3, a dummy tube including a current-carrying means having a small DC resistance component is attached to one socket of a two-lamp fluorescent lamp illumination device, and a normal fluorescent lamp is attached to the other socket. Fluorescent lamp fixtures are described in which only a single fluorescent lamp is lit.

JP 2008-277188 A JP 2009-272154 A JP 2000-208238 A

Inverter-type fluorescent lamp lighting fixtures are not as popular as the other two methods, so their popularity is low, and the inverter circuit is composed of a high-frequency circuit. In doing so, it is likely that many parts are required and the cost is high.

On the other hand, glow starter type and rapid start type fluorescent lamp lighting fixtures have a long history and are on the market overwhelmingly, and the rapid penetration rate of fluorescent lamp lighting fixtures is particularly high. Therefore, if an LED illuminating lamp that can be attached to a rapid-start type fluorescent lamp illuminating device can be realized, it is advantageous both in terms of diffusion and cost.

However, an LED illuminating lamp corresponding to a rapid start type fluorescent lighting apparatus generally has a switching control type rectifier circuit, and thus has a problem that high-frequency noise causing PSI radio wave interference occurs. In addition, in the case of a rapid start type fluorescent lamp illuminating device, the voltage applied to the four AC input pins of the fluorescent lamp is slightly different, so that the conventional LED lighting lamps lack the stability of the light quantity and are flickering. Etc. also occurred.

In addition, a fluorescent lamp apparatus in which only one fluorescent lamp is turned on by a dummy tube not only looks bad, but also suddenly becomes half bright and becomes too dark. Further, when a dummy tube is attached to a rapid start type fluorescent lamp illumination device, the dummy tube consumes the same power as a normal fluorescent lamp, and thus does not actually save energy.

Accordingly, an object of the present invention is to provide an LED illuminating lamp that can be attached to a rapid start type lighting fixture without using a switching control type rectifier circuit, and an LED illuminating apparatus having the LED illuminating lamp. To do. Another object of the present invention is to provide an LED illumination system that can adjust the brightness using the LED illumination lamp.

The LED illumination lamp according to the present invention is an LED illumination lamp that can be attached to and detached from a fluorescent illumination instrument,
First and second AC input pins provided at one end;
Third and fourth AC input pins provided at the other end;
First to fourth bridge rectifier circuits in which one AC terminal is connected to each of the first to fourth AC input pins, and the other AC terminal is connected to each other in common.
A first LED light emitting circuit having an LED light emitting element connected to the DC terminal side of the first or second bridge rectifier circuit so as to emit light;
A second LED light emitting circuit having an LED light emitting element connected to the DC terminal side of the third or fourth bridge rectifier circuit so as to emit light.

The LED illumination device according to the present invention includes the LED illumination lamp described above and an illumination fixture that can attach and detach the LED illumination lamp.

The LED illumination system according to the present invention includes the LED illumination lamp described above, an illumination fixture that lights the LED illumination lamp, and a dimmer that adjusts the brightness of the LED illumination lamp.

According to the present invention, it is possible to provide an LED illuminating lamp that can be attached to a rapid-start type lighting fixture, and an LED illuminating device having the LED illuminating lamp, without using a switching control type rectifier circuit. Moreover, according to this invention, the LED illumination system which can adjust brightness using the LED illumination light can be provided.

It is a figure which shows the circuit structure in one Embodiment of the LED lighting lamp which concerns on this invention. It is a figure which shows the constant current circuit which can be used in one Embodiment of the LED lighting lamp which concerns on this invention. It is a figure which shows the residual voltage removal circuit which can be used in one Embodiment of the LED lighting lamp which concerns on this invention. It is a typical perspective view which shows the structural member in one Embodiment of the straight tube | pipe type LED lighting lamp which concerns on this invention. It is a typical perspective view which shows the structural member in one Embodiment of the straight tube | pipe type LED lighting lamp which concerns on this invention. It is a figure which shows the voltage waveform controlled by the dimmer, (a) shows the voltage waveform controlled by the input free ON system dimmer, (b) The dimmer of the phase control system dimmer The voltage waveform controlled by is shown. It is a figure which shows the external appearance of one Embodiment of the wall surface type dimming switch used by this invention, (a) is a slide type | mold, (b) is a rotary type | mold.

<LED lighting>
FIG. 1 shows a circuit configuration in an embodiment of an LED illumination lamp according to the present invention. A first AC input pin 11 and a second AC input pin 12 are provided at one end of the LED illumination lamp, and a third AC input pin 13 and a fourth AC input pin 12 are provided at the other end. AC input pin 14 is provided. When LED lighting is installed in a lighting fixture, AC voltage is input from these AC input pins.

One AC terminal in the first bridge rectifier circuit 21 is connected to the first AC input pin 11. One AC terminal of the second bridge rectifier circuit 22 is connected to the second AC input pin 12. One AC terminal of the third bridge rectifier circuit 23 is connected to the third AC input pin 13. One AC terminal of the fourth bridge rectifier circuit 24 is connected to the fourth AC input pin 14. The other AC terminals in the first to fourth bridge rectifier circuits 21 to 24 are all connected to each other with a common COM in common.

By forming such a circuit, between the first AC input pin 11 and the third AC input pin 13, between the second AC input pin 12 and the third AC input pin 13, the first Two bridge rectifier circuits are connected in parallel between the AC input pin 11 and the fourth AC input pin 14 and between the second AC input pin 12 and the fourth AC input pin 14. Will be. That is, the AC voltage input to the LED lighting is divided and applied equally to the bridge rectifier circuits connected in parallel, so that a predetermined DC voltage can be obtained in each bridge rectifier circuit. The applicant of the present application named this circuit a super matrix circuit.

A first LED light emitting circuit 31 having an LED light emitting element 30 is connected to the DC terminal side of the first bridge rectifier circuit 21 and the second bridge rectifier circuit 22. A second LED light emitting circuit 32 having an LED light emitting element 30 is connected to the DC terminal side of the third bridge rectifier circuit 23 and the fourth bridge rectifier circuit 24. Accordingly, the LED light emitting element 30 included in the first LED light emitting circuit 31 can emit light by the DC current output from the DC terminal of the first bridge rectifier circuit 21 or the second bridge rectifier circuit 22, and the second The LED light emitting element 30 included in the LED light emitting circuit 32 can emit light by a DC current output from the DC terminal of the third bridge rectifier circuit 23 or the fourth bridge rectifier circuit 24. That is, since the super matrix circuit is employed as described above, the LED light emitting element 30 included in the first LED light emitting circuit 31 and the LED light emitting element 30 included in the second LED light emitting circuit 32 are independent of each other. Can emit light.

Each of the first LED light-emitting circuit 31 and the second LED light-emitting circuit 32 may include one LED light-emitting element 30, but usually a plurality of LED light-emitting elements connected in series and / or in parallel. 30. The number of the LED light emitting elements 30 included in one LED light emitting circuit may be appropriately set according to the required brightness, voltage, wattage, etc., but is preferably 20 to 300, more preferably 40 to 200. 60 to 150 are more preferable.

The LED light emitting element 30 included in the first LED light emitting circuit 31 and the second LED light emitting circuit 32 includes a red LED light emitting element, an orange LED light emitting element, a yellow LED light emitting element, a green LED light emitting element, a blue LED light emitting element, and a white LED. Any of the light-emitting elements may be used, but considering that it is used by being attached to a lighting fixture, a white LED light-emitting element is preferable.

In the circuit configuration as described above, when an AC voltage is applied between the first AC input pin 11 and the third AC input pin 13, the first bridge rectifier circuit 21 and the third bridge rectifier. The circuit 23 functions, and the LED light emitting elements 30 included in the first LED light emitting circuit 31 and the second LED light emitting circuit 32 emit light. When an AC voltage is applied between the first AC input pin 11 and the fourth AC input pin 14, the first bridge rectifier circuit 21 and the fourth bridge rectifier circuit 24 function, The LED light emitting elements 30 included in the first LED light emitting circuit 31 and the second LED light emitting circuit 32 emit light. When an AC voltage is applied between the second AC input pin 12 and the third AC input pin 13, the second bridge rectifier circuit 22 and the third bridge rectifier circuit 23 function, The LED light emitting elements 30 included in the first LED light emitting circuit 31 and the second LED light emitting circuit 32 emit light. When an AC voltage is applied between the second AC input pin 12 and the fourth AC input pin 14, the second bridge rectifier circuit 22 and the fourth bridge rectifier circuit 24 function, The LED light emitting elements 30 included in the first LED light emitting circuit 31 and the second LED light emitting circuit 32 emit light.

That is, by configuring the LED illumination lamp with the super matrix circuit as described above, the second AC input pin 12 and the third AC input pin 13 are connected between the first AC input pin 11 and the third AC input pin 13. AC voltage between the input pin 13, between the first AC input pin 11 and the fourth AC input pin 14, and between the second AC input pin 12 and the fourth AC input pin 14. Even if is applied, the LED light emitting element 30 included in the first LED light emitting circuit 31 and the second LED light emitting circuit 32 can finally emit light.

However, since the DC current output from the DC terminal of the bridge rectifier circuit is a pulsating flow having a periodic waveform, the LED light emitting element 30 emits when input directly to the LED light emitting circuit with only the above configuration. The light intensity may fluctuate and cause flickering.

Therefore, the LED illuminating lamp according to the present invention includes a first smoothing circuit 41 that smoothes the DC current output from the DC terminals of the first bridge rectifier circuit 21 and the second bridge rectifier circuit 22, and a third It is preferable to have a second smoothing circuit 42 that smoothes the DC current output from the DC terminals of the bridge rectifier circuit 23 and the fourth bridge rectifier circuit 24. By introducing these smoothing circuits, flicker can be prevented. The smoothing circuit is a circuit having a function of making the waveform of a pulsating flow closer to flat by utilizing properties such as a capacitor and a choke coil.

Further, in the LED lighting according to the present invention, the first constant current circuit 51 that makes the DC current flowing through the first LED light emitting circuit 31 constant and the DC current that flows through the second LED light emitting circuit 32 are made constant. A second constant current circuit 52 is preferably included. Examples of the element for constituting the constant current circuit include a constant current diode, a three-terminal regulator, and a transistor, but it is preferable to use a three-terminal regulator. FIG. 2 shows an example in which a circuit in which a resistor Rd is connected to a three-terminal regulator 55 is formed as the first constant current circuit 51. In this constant current circuit, a substantially constant current can be obtained by appropriately adjusting the resistance value of the resistor Rd.

On the other hand, even if the application of voltage is stopped by turning off the switch, the LED light emitting element 30 does not turn off and emits light for a while due to the voltage remaining in the first LED light emitting circuit 31 and the second LED light emitting circuit 32. It will remain as it is.

Therefore, the LED illumination lamp according to the present invention includes a first residual voltage removing circuit 61 that removes a voltage remaining in the first LED light emitting circuit 31 and a second LED light emitting circuit when the switch is turned off. It is preferable to have a second residual voltage removing circuit 62 that removes the voltage remaining at 32. As the residual voltage removing circuit, for example, a circuit in which a resistor is connected in parallel to the LED light emitting circuit can be formed. FIG. 2 shows an example in which a circuit connected to a resistor Rc is formed as the first residual voltage removing circuit 61. At this time, when the resistance value of the resistor Rc and R _1, the resistance of the first LED light emission circuit 31 connected in parallel to the resistor and the R _0, the following equation (1):
R ₀ × R ₁ / (R ₀ + R ₁ )> R ₀ (1)
If this is satisfied, the residual voltage is removed within 0.1 sec.

The LED illuminating lamp according to the present invention has a shape that can be attached to and detached from a lighting fixture such as a fluorescent lighting fixture. That is, the LED illumination lamp has the same or substantially the same external shape as the fluorescent lamp used so far, and is attached to the fluorescent lamp illumination fixture instead of the fluorescent lamp used so far. . As the shape of the fluorescent lamp, generally, a straight tube shape, a ring shape, a compact shape, a light bulb shape, and the like are known, and the LED illumination lamp can also have these shapes. However, as described above, since the LED illumination lamp has four AC input pins, it usually has the same or substantially the same external shape as a straight tube fluorescent lamp. In the case of an LED illuminating lamp having a shape that can be attached to and detached from a light bulb-shaped lighting fixture such as a mercury lamp, the LED illuminating lamp is turned on with two AC input pins instead of four AC input pins. In this case, one of the first or second AC input pins and one of the third or fourth AC input pins are used in combination, and the other AC input pin is not connected.

FIG.4 and FIG.5 shows the structural member in one Embodiment of the straight tube | pipe type LED lighting lamp which concerns on this invention. In this straight tube type LED illumination lamp, a base 1 formed in a semi-cylindrical shape and a cover 3 formed in a semi-cylindrical shape are coupled so that the openings face each other. By covering with the

caps

4 and 5 on which the pins are installed, it has the same or substantially the same external shape as the straight tube fluorescent lamp.

The base 1 is provided with a plate so as to cover the opening, and the LED light emitting element is disposed on the cover 3 side of the plate. The base 1 and the plate may be detachable or bonded. For example, in the straight tube LED lighting shown in FIG. 4, the base 1 is provided with a plate 2 with an LED light emitting element so as to cover the opening, and the LED light emitting element 30 is formed of the plate 2 with an LED light emitting element. It is arranged on the surface on the cover 3 side. On the other hand, in the straight tube type LED lighting shown in FIG. 5, the base 1 and the plate 2a covering the opening are integrated, and the LED light emitting element substrate 2b having the LED light emitting element 30 is covered with the plate 2a. Installed on the 3rd surface.

The base 1 is usually formed of aluminum or the like in order to improve heat dissipation. Furthermore, it is preferable that heat radiation fins (not shown) for releasing heat generated from the LED light emitting elements 30 are provided on the inner surface of the base 1. The heat radiating fins can efficiently release the heat generated from the LED light emitting element 30 to prevent the LED lighting lamp from being damaged due to overheating. The plate 2 with LED light emitting element and the plate 2a are also usually made of aluminum or the like in order to improve heat dissipation.

The cover 3 may be made of glass as long as it has a property of transmitting the light from the LED light emitting element 30 and is usually made of a resin having a light transmission property such as a silicon resin, an acrylic resin, or a polycarbonate resin. The Furthermore, it is preferable that the inner surface of the cover 3 is frosted (processed to form a frosted glass). Although the light from the LED light emitting element 30 is highly directional, the light from the LED light emitting element 30 is diffusely reflected by the frosted inner surface of the cover 3 and emits light similar to a fluorescent lamp as a whole. It becomes like this.

In the straight tube type LED illuminating lamp having such a configuration, two AC input pins installed in one cap become first and second AC input pins, and two AC input pins installed in the other cap have two AC input pins installed. The circuit described above is formed to be the third and fourth AC input pins. And the 1st and 2nd LED light emission circuit (not shown) is formed in the cover 3 side of a plate, and it arrange | positions so that the LED light emitting element 30 may face the cover 3 side of a plate. Circuits such as a bridge circuit, a smoothing circuit, a constant current circuit, and a residual voltage removal circuit may be formed on the base 1 side of the plate, or formed on a separate substrate and then formed in a space formed by the base 1 and the plate. You may arrange.

<LED lighting device>
The LED illumination lamp according to the present invention is an LED illumination device by attaching it to a detachable illumination fixture. In addition, although it is assumed that an LED illumination lamp is attached to the already installed fluorescent lamp illumination fixture instead of the fluorescent lamp, it can of course be attached to an illumination fixture dedicated to the LED illumination lamp.

Glowing starter type, rapid start type, inverter type, etc. are known as lighting methods for fluorescent lamp lighting fixtures. The LED lighting lamp according to the present invention is attached to any type of fluorescent lighting fixtures. be able to. In general, work is required to attach the LED lighting lamp to the rapid start type fluorescent lamp lighting fixture, but the LED lighting lamp according to the present invention is also applicable to the rapid start type fluorescent lighting fixture so far. It can be installed without any work.

<LED lighting system>
The LED illumination system according to the present invention includes the above-described illumination lamp, the above-described illumination fixture, and a dimmer that adjusts brightness. With such a configuration, it is possible not only to use a switching control type rectifier circuit for the LED lighting, but in particular, it can be attached to a rapid-start type fluorescent lighting device. The brightness can be adjusted. For example, the brightness of the LED lighting can be easily suppressed by the dimmer when the brightness by illumination is not so necessary as in the daytime, and the power consumption is reduced correspondingly, thereby saving energy.

In the LED lighting system according to the present invention, a dimmer that adjusts the brightness of the LED lighting is used. Since the above LED illumination lamp employs a super matrix circuit, the brightness changes continuously in response to a change in input voltage. That is, the LED illumination system according to the present invention can easily perform dimming by using, for example, an input-free ON-type dimmer that adjusts the voltage with a slider.

Here, in general, a phase control type dimmer using an electronic element called triac is widely used instead of an input free ON type dimmer. Therefore, if a phase control type dimmer can be used, there is a great merit in that existing facilities can be used effectively. However, if the phase control type dimmer is used as it is, intermittent flickering is observed in the LED lighting.

This difference will be described with reference to FIG. The voltage waveform 101 controlled by the input free ON type dimmer is a waveform in which the amplitude is reduced while the AC voltage waveform 100 maintains a sine wave shape (FIG. 6A). On the other hand, the voltage waveform 102 controlled by the phase control type dimmer is a distorted waveform in which a part of the AC voltage waveform 100 is turned off (FIG. 6B). The flicker is caused by a distorted voltage waveform output from a phase control type dimmer.

Therefore, when a phase control type dimmer is used, it is preferable to arrange a control transformer between the dimmer and the LED illumination lamp. By doing so, the distorted voltage waveform output from the phase control type dimmer can be corrected, and intermittent flickering of the LED lighting can be prevented.

Also, a wall-embedded dimmer switch can be used as the dimmer. In this case, the brightness of all the LED lighting lamps connected to the wall surface embedded type dimming switch can be adjusted simultaneously.

FIG. 7 shows the appearance of an embodiment of a wall surface embedded dimmer switch. FIG. 7A is a slide type, and FIG. 7B is a rotary type. In these dimmers, the main power supply can be switched on / off by the power switch 75, and the output voltage can be adjusted by the slide type dimming knob 71 or the rotary type dimming knob 72. The dimming knob may be a type that can continuously adjust the output voltage, or a type that can intermittently adjust the output voltage in about 2 to 6 steps. Note that the wall surface embedded dimmer switch shown in FIG. 7 is provided with the power switch and the dimmer knob separately, but the adjustment knob may be a dual-purpose type having the function of the power switch. Further, a remote control type wall surface embedded dimmer switch may be used.

Furthermore, the above LED lighting lamp may incorporate a dimmer. If the LED illumination lamp has a built-in dimmer, the brightness of the LED illumination lamp can be adjusted independently even when multiple LED illumination lights are installed, so the entire room is adjusted to a constant brightness. It becomes possible. The output voltage from the dimmer may be adjusted by providing an adjustment knob on the LED illumination light, or may be adjusted by a remote control, and depends on the illuminance measured by the illuminance sensor as described later. You may enable it to adjust automatically.

When the LED lighting has a built-in dimmer, dimming is possible without using a wall-mounted dimming switch, but both can be used together. When used together, the overall brightness can be adjusted by the wall surface embedded dimming switch, and the local brightness can be adjusted by the dimmer built in the LED lighting.

Furthermore, the LED illumination lamp includes an illuminance sensor, and the brightness of the LED illumination lamp can be adjusted by adjusting the output voltage from the dimmer according to the illuminance measured by the illuminance sensor. In this case, the entire room can be adjusted to a more constant brightness.

This application claims priority based on Japanese Patent Application No. 2011-84960 filed on Apr. 7, 2011 and Japanese Patent Application No. 2011-153386 filed on Jul. 12, 2011. The disclosures of which are incorporated herein by reference in their entirety.

DESCRIPTION OF SYMBOLS 1 Base 2 Plate 2a with LED light emitting element 2a Plate 2b LED light emitting element board | substrate 3 Cover 4 1st cap 5 2nd cap 11 1st AC input pin 12 2nd AC input pin 13 3rd AC input pin 14 1st 4 AC input pins 21 1st bridge rectifier circuit 22 2nd bridge rectifier circuit 23 3rd bridge rectifier circuit 24 4th bridge rectifier circuit 30 LED light emitting element 31 1st LED light emitting circuit 32 2nd LED light emission Circuit 41 First smoothing circuit 42 Second smoothing circuit 51 First constant current circuit 52 Second constant current circuit 55 Three-terminal regulator 61 First residual voltage removal circuit 62 Second residual voltage removal circuit 71 Slide type Dimming knob 72 Rotary dimming knob 75 Power switch 100 AC voltage waveform 101 Input free N type dimmer by controlled voltage waveform 102 phase control method voltage waveform COM Common Rc resistor Rd resistor controlled by dimmer dimmer of

Claims

It is an LED illumination light that can be attached to and detached from a fluorescent illumination instrument,
First and second AC input pins provided at one end;
Third and fourth AC input pins provided at the other end;
First to fourth bridge rectifier circuits in which one AC terminal is connected to each of the first to fourth AC input pins, and the other AC terminal is connected to each other in common.
A first LED light emitting circuit having an LED light emitting element connected to the DC terminal side of the first or second bridge rectifier circuit so as to emit light;
The LED illumination lamp which has a 2nd LED light emission circuit which has the LED light emitting element connected to the DC terminal side of the said 3rd or 4th bridge rectifier circuit so that light emission was possible.
A first smoothing circuit for smoothing a DC current output from a DC terminal of the first and second bridge rectifier circuits;
The LED illumination lamp according to claim 1, further comprising: a second smoothing circuit that smoothes a DC current output from a DC terminal of the third and fourth bridge rectifier circuits.
A first constant current circuit for making a DC current flowing in the first LED light emitting circuit constant;
The LED illumination lamp according to claim 2, further comprising: a second constant current circuit that makes a DC current flowing in the second LED light emitting circuit constant.
The LED illumination lamp according to claim 3, wherein the first and second constant current circuits are formed using a three-terminal regulator.
A first residual voltage removing circuit for removing a voltage remaining in the first LED light emitting circuit when the switch is turned off;
The LED illumination lamp according to any one of claims 1 to 4, further comprising: a second residual voltage removing circuit that removes a voltage remaining in the second LED light emitting circuit when the switch is turned off. .
The LED illumination lamp according to claim 5, wherein a resistor is connected in parallel to the first and second LED light emitting circuits as the first and second residual voltage removing circuits, respectively.
When the resistance value of the resistor is Rc and the resistance value of the LED light emitting circuit connected in parallel with the resistor is R0 , the following formula (1):
R 0 × R 1 / (R 0 + R 1 )> R 0 (1)
The LED illumination lamp of Claim 6 satisfying
The LED according to any one of claims 1 to 7, wherein the LED light-emitting element included in the first LED light-emitting circuit and the LED light-emitting element included in the second LED light-emitting circuit can emit light independently of each other. Lighting light.
A base formed in a semi-cylindrical shape,
A plate installed to cover the opening of the base;
A light-transmitting cover that is formed in a semi-cylindrical shape and that is coupled to the base such that the opening thereof faces the opening of the base, the first and second AC input pins are installed, and the base A first cap covering one end to which the cover is coupled;
A second cap covering the other end where the third and fourth AC input pins are installed and the base and the cover are coupled;
The LED illumination lamp according to any one of claims 1 to 8, wherein the LED light-emitting elements of the first and second LED light-emitting circuits are arranged on the cover side of the plate.
The LED illumination lamp according to claim 9, wherein fins for releasing heat generated from the LED light emitting elements of the first and second LED light emitting circuits are provided on the inner surface of the base.
The LED illumination lamp according to claim 9 or 10, wherein the cover has a frosted inner surface.
The LED lighting device according to any one of claims 1 to 11, wherein the fluorescent lighting device is a rapid start type.
13. An LED illumination device comprising: the LED illumination lamp according to any one of claims 1 to 12; and an illumination fixture to which the LED illumination lamp can be attached and detached.
The LED lighting device according to claim 13, wherein the lighting fixture is a rapid start type fluorescent lighting fixture.
13. An LED illumination system comprising: the LED illumination lamp according to claim 1; an illumination fixture that lights the LED illumination lamp; and a dimmer that adjusts the brightness of the LED illumination lamp.
The LED lighting system according to claim 15, wherein the dimmer is an input free ON type dimmer.
The LED lighting system according to claim 15, wherein the dimmer is a phase control type dimmer, and further includes a control transformer disposed between the dimmer and the LED illumination lamp.
The LED illumination system according to any one of claims 15 to 17, wherein the dimmer has a wall surface embedded dimmer switch.
The LED illumination system according to any one of claims 15 to 18, wherein the LED illumination lamp includes the dimmer.
20. The LED lighting system according to claim 19, wherein the LED lighting system includes a plurality of the LED lighting lamps, and the brightness of each of the LED lighting lamps can be adjusted independently.
21. The LED illumination system according to claim 19 or 20, wherein the LED illumination lamp includes an illuminance sensor, and the brightness of the LED illumination lamp can be adjusted according to the illuminance measured by the illuminance sensor.