JP2012164436A - Illuminating fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illuminating fixture with a simple configuration capable of maintaining an illumination state even in emergency such as at interruption of power supply, and to provide an illuminating fixture capable of suppressing deterioration of a secondary battery and enabling illumination in emergency over a long period even when the illuminating fixture is used in a normal time.SOLUTION: An illuminating fixture has: an LED 8 receiving power supply based on a commercial power source to emit light; a secondary battery 10 charged by the power based on the commercial power source; a voltage detection circuit detecting presence/absence of the power supply of the commercial power source; and a charge/discharge switching part switching over the power supply source to the LED 8 from the commercial power source to the secondary battery 10 based on the detection output from the voltage detection circuit when the power supply from the commercial power source is stopped.

Description

  The present invention relates to a luminaire that can maintain an illumination state even when power supply is stopped due to a power failure or the like.

  Conventionally, in lighting fixtures such as fluorescent lamps and incandescent lamps, secondary batteries that have been charged from the commercial power source in advance are prepared in case the power supply from the commercial power source is stopped due to a power failure in the event of a disaster. There has been proposed a lighting facility that uses electric power to turn on other lighting fixtures and maintain the lighting state (for example, Patent Document 1 below).

  As shown in FIGS. 3 and 4, the luminaire 100 </ b> A shown in Patent Document 1 is configured to supply electric power from a commercial power source to the fluorescent lamp 102 through the inverter circuit 101 and turn on the fluorescent lamp 102. Yes.

In addition, the lighting fixture 100 </ b> A can supply power from the commercial power source to the charging unit 105 through the step-down rectifier circuit 103 and the constant voltage control circuit 104 simultaneously with power supply to the fluorescent lamp 102.
The charging unit 105 can further form a closed circuit with the LED 107 via the resistor 106.

A switching element 108 a is interposed between the constant voltage control circuit 104 and the charging unit 105.
The switching element 108 a includes a contact P <b> 1 connected to the constant voltage control circuit 104, a contact P <b> 2 connected to the resistor 106, and an actuator S connected to the charging unit 105.
On the other hand, power from a commercial power supply is supplied to the coil 108b.

The switching element 108a constitutes the charge / discharge switching unit 108 together with the coil 108b, and connects the actuator S of the switching element 108a to the contact P1 side by the magnetic force induced by the coil 108b at the normal time when power is supplied from the commercial power source. Thus, the charging unit 105 is charged and the charging unit 105 and the LED 107 are disconnected.
In an emergency when the power of the commercial power supply is stopped, the switching element 108a connects the actuator S to the contact P2 side to disconnect the charging unit 105 from the commercial power source and to connect the charging unit 105 and the LED 107. It has become.

  In this lighting fixture 100A, at a normal time, power from a commercial power supply is supplied to the fluorescent lamp 102 via the inverter circuit 101, and the fluorescent lamp 102 is turned on. However, in an emergency where the supply of power from the commercial power source is stopped due to a power failure or the like, this is detected by the coil 108b, and the actuator S of the switching element 108a is operated to disconnect the charging unit 105 from the commercial power source. At the same time, the charging unit 105 and the LED 107 are connected, the electric power stored in the charging unit 105 is supplied to the LED 107, and the illumination is switched from the fluorescent lamp 102 to the LED 107. Accordingly, even if the fluorescent lamp 102 is turned off due to a power failure or the like, the LED 107 is caused to emit light, and the illumination state is continuously obtained.

As shown in FIG. 4, the lighting fixture 100A having the above configuration includes a casing 110 and a base 111 that are configured by a substrate 112, a light bulb globe 114, and a neck portion 115. All elements are stored.
That is, the step-down rectifier circuit 103, the constant voltage control circuit 104, and the charge / discharge switching unit 108 are attached to the substrate 112, and the charging unit 105 is provided above them, and the reflection case 113 is provided so as to cover the whole. It has been. An LED 107 is mounted on the tip of the reflection case 113. Further, a fluorescent lamp 102 is disposed so as to cover the reflective case 113 and the LED 107, and a light bulb globe 114 is disposed so as to cover the fluorescent lamp 102. Further, the inverter circuit 101 is disposed on the opposite side of the substrate 112, and a base 111 is provided at the lower end of the neck portion 115 that covers them.

JP 2006-139888 A

  By the way, in the said conventional lighting fixture 100A, the light emitting element used at the time of the steady state in which the electric power is supplied from the commercial power supply, and the light emitting element used in the emergency when the electric power supply from the commercial power supply is stopped are separately provided. Therefore, there is a problem in that the configuration of the lighting fixture 100A becomes complicated and the manufacturing cost of the lighting fixture 100A increases.

In addition, the lighting fixture 100A includes a number of elements that become high in temperature when the fluorescent lamp 102 is illuminated, and the charging unit 105 is disposed in the vicinity of the fluorescent lamp 102 and the like. There was a problem of early deterioration due to high temperatures.
In particular, when this lighting fixture 100A is used for a long period of time, the charging time of the charging unit 105 is reduced, so that the discharge time is shortened and the voltage obtained is also reduced to shorten the illumination time of the LED 107. There was a problem that the desired brightness could not be obtained.

  The subject of this invention is providing the lighting fixture of the simple structure which can maintain an illumination state also at the time of emergency, such as the time of a power failure, in view of the problem of the said prior art. It is another object of the present invention to provide a lighting fixture that can suppress the deterioration of the secondary battery even when the lighting fixture is used in a steady state and can perform emergency lighting for a long time.

The present invention provides the following means in order to solve the above problems.
According to the first aspect of the present invention, there is provided an LED that is lit when supplied with power based on a commercial power source, a secondary battery that is charged with power based on the commercial power source, and a voltage that detects whether the commercial power source is powered. A detection circuit; and a charge / discharge switching unit that switches a power supply source to the LED from the commercial power source to the secondary battery based on a detection output of the voltage detection circuit when power supply to the commercial power source is stopped. It is characterized by that.
In this invention, since the light-emitting body used at the time of a steady state and the light-emitting body used at the time of emergency are made common, the structure of a lighting fixture becomes simple.

According to a second aspect of the present invention, in the lighting apparatus according to the first aspect, a plate member and a globe in which the LEDs are arranged, a shell attached to the plate member, and a power source to which the commercial power supply is supplied And a base having a conductive portion for introducing the commercial power from the socket. The secondary battery is disposed in a shell.
In the present invention, since the secondary battery is disposed in the shell, the secondary battery is separated from elements such as LEDs that cause a temperature rise, and is not easily affected by heat generated by the LEDs. It is possible to prevent lighting and to perform illumination with a predetermined luminance and for a long time after the supply of power from the commercial power supply is stopped for a long time.

A third aspect of the present invention is the lighting apparatus according to the first or second aspect, wherein the secondary battery includes a solid electrolyte.
In the present invention, the electrolyte of the secondary battery provided in the lighting fixture does not volatilize, and problems such as liquid leakage are avoided, and the life of the secondary battery in the lighting fixture is extended.

According to the lighting apparatus of the present invention, the following effects can be achieved by the above-described solving means.
That is, according to the lighting apparatus of the present invention, the light emitter used after the supply of electric power from the commercial power supply is shared with the LED used for steady-state lighting, so the entire structure of the lighting apparatus is simplified. This is advantageous in that the manufacturing cost of the lighting fixture can be reduced.

These are the circuit diagrams which show the electric circuit of the lighting fixture shown as one Embodiment of this invention. These are the longitudinal cross-sectional views of the lighting fixture shown as one Embodiment of this invention. These are the circuit diagrams which showed the electric circuit of the conventional lighting fixture. These are the longitudinal cross-sectional views of the conventional lighting fixture.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, commercial power is supplied to terminals 1a and 1b. This electric power is converted into direct current by the AC / DC converter 2 and dropped to a predetermined voltage.

  One output terminal 3a of the AC / DC converter 2 is connected to the contact 5 of the switching element 4 constituting the charge / discharge switching unit. The switching element 4 switches and connects the actuator S to the contact 5 or the contact 6 connected to the lithium ion secondary battery 10. The other output terminal 3b of the AC / DC converter 2 is grounded.

  The actuator S of the switching element 4 is connected to the LED 8 via the resistor 7, and the other electrode of the LED 8 is grounded.

  In addition, one output terminal 3a of the AC / DC converter 2 is connected to the lithium ion secondary battery 10 via the diode 9, and the electric power that has passed through the diode 9 is lithium ion in a steady state when electric power is supplied from a commercial power source. The secondary battery 10 is supplied.

The output terminals 3 a and 3 b of the AC / DC converter 2 are connected to the voltage detection circuit 11.
The voltage detection circuit 11 detects whether the power of the commercial power supply supplies power to the lighting fixture A as usual, or whether the power of the commercial power supply is stopped to the lighting fixture A due to a power failure or the like. In a steady state where the commercial power supply is supplying power to the LED 8, the actuator S of the switching element 4 is brought into contact with the contact 5, and in the event of an emergency when the power supply is stopped due to a power failure or the like, the actuator S is turned on. The circuit is controlled by contacting the contact 6.

As shown in FIG. 2, the luminaire A includes a casing 13 and a base 14.
The casing 13 includes a globe 15 formed in a hemispherical shape from a translucent synthetic resin material, a heat dissipation plate 16 to which the globe 15 is attached, and a shell 17 to which the heat dissipation plate 16 is attached.

  A substrate 21 is mounted on the upper surface of the heat dissipation plate 16 inside the globe 15, and a plurality of LEDs 8 are fixed on the substrate 21.

The shell 17 is a cylindrical member having a diameter that gradually increases from the base 14 toward the globe 15, and concave and convex strips are alternately formed along the cylindrical axis on the outer surface of the shell 17. It is easy to dissipate heat.
As the material of the shell 17, a metal such as aluminum or a synthetic resin such as polystyrene, polycarbonate, polybutylene terephthalate or the like is used, and heat generated in the shell 17 can be efficiently radiated.

  In addition, the lithium ion secondary battery 10 and the electronic circuit unit 24 are disposed inside the shell 17, and a seal is provided between the inner surface of the shell 17 and the lithium ion secondary battery 10 and the electronic circuit unit 24. The material 25 is filled. The sealing material 25 is made of a synthetic resin material such as an elastomer.

In the electronic circuit unit 24, the AC / DC converter 2, the voltage detection circuit 11, the switching element 4 and the like shown in FIG. 1 are mounted.
Further, the upper end of the base body 18 is fitted to the lower end of the shell 17.

  The lithium ion secondary battery 10 is, for example, a secondary battery formed in a cylindrical shape or the like, and has a solid electrolyte that is solid in an environment of −50 degrees to 90 degrees and has functions of a separator and an electrolytic solution. Yes.

The base 14 has a bottomed cylindrical base body 18, a first conductive portion 19 formed on the outer peripheral surface of the base body 18, and a second provided on the lower end of the base body 18 via an insulator 20. The conductive portion 21 is provided.
A male screw portion 19 a is formed on the outer peripheral surface of the first conductive portion 19.

The usage method and operation of the lighting fixture A having the above-described configuration will be described.
The luminaire A is used by being screwed into a socket of a hanging illuminator (not shown) in the room or a socket provided on the ceiling of the room.

  When the power switch (not shown) is turned on with the lighting fixture A inserted in the socket, power is supplied from the terminals 1a and 1b shown in FIG. 1, and the AC / DC converter 2 converts the power from the commercial power source from AC to DC. At the same time, the voltage is lowered to a predetermined voltage.

  When electric power is supplied from the commercial power source, the voltage detection circuit 11 detects the voltage of the output terminals 3a and 3b that have passed through the AC / DC converter 2, and brings the actuator S of the switching element 4 into contact with the contact 5 side. As a result, the output of the AC / DC converter 2 is supplied to the LED 8 through the switching element 4 and further through the resistor 7.

  As a result, the LED 8 is turned on, and the illumination light at the normal time is obtained. At this time, the output of the AC / DC converter 2 is supplied to the lithium ion secondary battery 10 via the diode 9, and the lithium ion secondary battery 10 is charged.

When the supply of power from the commercial power supply is stopped due to a power failure or the like, the voltage detection circuit 11 detects the stop of the power supply and switches the actuator S of the switching element 4 to the contact 6 side.
At this time, the output of the lithium ion secondary battery 10 is not supplied with electric power to the commercial power source because the diode 9 is interposed between the output of the lithium ion secondary battery 10 and the AC / DC converter 2.
Thereby, the power of the lithium ion secondary battery 10 is supplied to the LED 8 through the resistor 7, and the LED 8 emits light.
In this way, even when the commercial power supply fails, the lighting fixture A can maintain the lighting state thereafter.

  As described above, according to the lighting fixture A, the temperature in the globe 15 is increased by the LED 8 during the illumination, but the lithium ion secondary battery 10 is disposed in the shell 17 and the lithium ion secondary battery 10 is disposed. A solid electrolyte is used as the electrolyte. That is, since the lithium ion secondary battery 10 and the LED 8 are separated from each other, the lithium ion secondary battery 10 is not easily affected by the temperature rise of the LED 8, and the deterioration of the lithium ion secondary battery 10 is ensured by this temperature rise. Can be prevented. Moreover, the sealing material 25 is filled in the shell 17, and heat generated in the shell 17 can be efficiently radiated to the outside. Further, since the solid electrolyte is provided as the electrolyte of the lithium ion secondary battery 10, the electrolyte does not volatilize due to the heat generated by the LED 8, and the occurrence of liquid leakage can be avoided. 10 can be used stably over a long period of time. Therefore, even after using the luminaire A for a long time, it is possible to suppress the deterioration of the lithium ion secondary battery 10 and to illuminate the LED 8 for a long time after a power failure for a long time, and to obtain high luminance. it can.

  Moreover, according to the lighting fixture A, since the light-emitting body used after the electric power supply stop from a commercial power supply is made common with LED8 used for illumination at the time of steady state, the structure of the lighting fixture A whole is simplified. Thus, the effect of reducing the manufacturing cost of the lighting fixture A can be obtained.

A Lighting fixture 4 Switching element (charge / discharge switching part)
8 LED
DESCRIPTION OF SYMBOLS 10 Lithium ion secondary battery 11 Voltage detection circuit 14 Base 15 Globe 16 Heat sink (plate member)
17 Shell

Claims (3)

An LED that lights up when supplied with power based on a commercial power source;
A secondary battery that is charged with electric power based on the commercial power source;
A voltage detection circuit for detecting the presence or absence of power supply of the commercial power supply;
A charge / discharge switching unit that switches a power supply source to the LED from the commercial power source to the secondary battery based on a detection output of the voltage detection circuit when power supply of the commercial power source is stopped. Lighting equipment to do. The lighting fixture according to claim 1,
A plate member and a globe in which the LED is disposed; and
A shell attached to the plate member;
It is attachable to a power socket to which the commercial power is supplied, and includes a base having a conductive portion for introducing the commercial power from the socket,
The lighting apparatus, wherein the secondary battery is disposed in the shell. The lighting fixture according to claim 1 or 2,
The secondary battery includes a solid electrolyte.

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