JP2003338211A - Safety lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety lamp which can lessen operation errors of brightness sensor. <P>SOLUTION: For the safety lamp, a printed board 2, on which a brightness sensor 28 detecting the ambient brightness, a heat ray sensor 27 detecting the presence of a human body within a detection area, a lighting control circuit lighting an LED 22 when the heat ray sensor 27 detects a human body at the time the brightness detected by the brightness sensor 28 is lower than prescribed, a storage battery 3 charged by an AC power source, and a service interruption detecting circuit lighting the LED 22 by the storage battery when service interruption of the AC power source is detected have been mounted, is housed in an instrument body 1 composed of a body 1A and a body cover 1B, and a container section 11 for the storage battery 3 composed of a temporary holder portion 11 for the storage battery provided on an inner bottom surface of the body 1A and an insertion hole 45a for the storage battery provided in the body cover 1B is provided between the brightness sensor 28 and the LED 22 in the instrument body 1. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a safety light.

[0002]

2. Description of the Related Art Conventionally, a brightness sensor for detecting ambient brightness and a heat ray sensor for detecting the presence or absence of a person in a detection area are provided, and the brightness detected by the brightness sensor is a predetermined brightness. There has been a safety light that turns on the light source when the heat ray sensor detects a person at the following time and turns on the light source by the storage battery when detecting a power failure of the commercial AC power supply.

[0003]

However, in the conventional safety lamp, since the light receiving portion of the brightness sensor and the light source are close to each other, there is a risk that the brightness sensor may malfunction in response to the light source.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a safety lamp which can reduce malfunction of the brightness sensor.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 has a device main body, and a light receiving part installed on the upper part of the device main body is made to face the surface of the device main body so as to reduce the ambient brightness. A brightness sensor for detecting, a light source installed below the surface of the equipment body for illuminating the periphery of the equipment body, a heat ray sensor for detecting the presence or absence of a person in the detection area, and based on the detection signals of the brightness sensor and the heat ray sensor Lighting control circuit for lighting the light source, a storage battery charged by using a commercial AC power source as a charging source, and a storage battery storage unit installed in the instrument body between the brightness sensor and the light source to store the storage battery. And a power failure detection circuit that lights the light source by the storage battery when a power failure of the commercial AC power source is detected.

According to a second aspect of the invention, in the first aspect of the invention, the storage battery accommodating portion is provided at a place distant from the connection portion to the commercial AC power source.

According to a third aspect of the present invention, in the first aspect of the invention, the storage battery accommodating portion has a temporary holding portion into which the storage battery is inserted and which temporarily holds the storage battery.

According to a fourth aspect of the present invention, in the invention according to the third aspect, the instrument body comprises a body and a cover attached to the body, and a temporary holding portion for the storage battery is provided on the body. The storage battery housed in the temporary holder is held by the body and the cover.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a storage battery cover portion pivotally attached to the instrument body and openably and closably covers the storage battery takeout portion opened on the surface of the instrument body is provided. A cutoff switch for the storage battery that is turned on / off by opening / closing the storage battery cover is provided inside the storage battery cover.

According to a sixth aspect of the invention, in the fifth aspect of the invention, a hinge for pivotally attaching the storage battery cover portion to the instrument body is provided integrally with the instrument body.

According to a seventh aspect of the invention, in the sixth aspect of the invention, the takeout portion of the storage battery is provided at a position apart from the hinge.

According to an eighth aspect of the present invention, in the first aspect of the present invention, a state of stopping the operation to charge the storage battery, a state of operating according to instructions of the lighting control circuit and the power failure detection circuit, and the storage battery The changeover switch for selecting the state for inspecting is provided, and the changeover switch is provided at the center of the upper part of the instrument body.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to an embodiment.

As shown in FIGS. 1 to 3, an instrument main body 1 for a safety light according to this embodiment is attached to a substantially box-shaped synthetic resin body 1A having an open front surface and an opening portion of the body 1A. It is composed of a body cover 1B. A collar portion 40 is provided on each of a pair of side surfaces of the body cover 1B facing the back,
Body 1A and body cover 1B are body cover 1B
Connecting claws 42a provided on the left and right sides of the collar portion 40 of the
To 42d are provided in the body 1A for coupling holes 12a to 12d.
The device main body 1 is configured by being joined and fixed by being engaged with.

In addition, the collar portion 40 is provided with two pairs of locking claws 41 which are detachably engaged with the locking holes 8a provided in the two-piece mounting frame 8 made of synthetic resin. Like a general embedded wiring device, a mounting frame 8 made of synthetic resin can be used to mount the switch box or the embedded hole embedded in the wall surface. The body cover 1B
A pair of mounting portions 43 for mounting on a metallic mounting frame is provided on each of both side surfaces of the pair.

On the inner bottom surface of the body 1A, when a storage battery 3 such as a NiCd (NiCd) battery is stored in the instrument body 1, the storage battery 3 is inserted and the storage battery temporary holding portion 11 for temporarily holding the storage battery 3 and commercial AC A block housing portion 13 for housing a printed circuit board block 21 having a known quick-connecting terminal (not shown) into which an electric wire for connecting to a power source is inserted;
A printed board housing section 18 for housing the printed board 2 attached to the printed board block 21 is provided, respectively.

The temporary holding portion 11 of the storage battery is formed so as to wrap the side surface of the storage battery 3 according to the shape of the storage battery 3 by the partition wall 11a, and is inserted when the storage battery 3 is attached or replaced. The storage battery 3 is temporarily held so that the storage battery 3 is prevented from falling off and the work can be easily performed. The temporary holding portion 11 constitutes a storage battery storage portion that holds the storage battery 3 together with the storage battery insertion hole 45a of the body cover 1B described later.

Further, the temporary holding portion 11 of the storage battery is a brightness sensor 28 installed on the upper part of the instrument body 1 as described later.
And LED22 as a light source installed at the bottom of the instrument body
So as to be disposed between the device body 1 and the wall surface, the device body 1 is disposed at a position slightly lower than the center in the vertical direction when the device body 1 is mounted on the wall surface.

Further, the temporary holding portion 11 of the storage battery is provided on the side wall 16 side, which is as far as possible from the block housing portion 13 provided on the side wall 17 side of the body 1A, and is connected to the commercial AC power source. By disposing the block storage portion 13 for storing the printed circuit board block 21 and the temporary holding portion 11 for storing the storage battery in separate locations,
Sufficient insulation distance is secured.

The block housing portion 13 has an exposure hole 13 at the bottom.
The printed circuit board block 21 is housed so that the convex portion 21b of the printed circuit board block 21 is exposed from the exposure hole 13a to the back surface of the instrument body 1. An electric wire insertion hole 21a for a quick-connect terminal is provided on the surface of the convex portion 21b of the printed circuit board block 21 so that an electric wire can be inserted.

When the printed circuit board block 21 is stored in the block storage portion 13, the printed circuit board 2 mounted in the printed circuit board block 21 is simultaneously placed in the printed circuit board storage portion 18.

The printed board 2 is provided with a notch 24 for allowing the temporary holding portion 11 of the storage battery to escape when the printed board 2 is placed on the body 1A, and the central piece 2c.
And a pair of opposing pieces 2a and 2b, which are formed in a substantially U-shape, and on the surface of which a changeover switch S for switching the operation of the safety light is provided.
W1 and a heat ray sensor 27 that includes a pyroelectric element and detects the presence or absence of a person in the detection area by the heat ray emitted from the human body.
A brightness sensor 28 that includes a photoelectric conversion element such as CdS to detect ambient brightness; a shutoff switch SW2 that shuts off the storage battery 3 from a commercial AC power supply; a connector 31 of the storage battery 3; and a printed circuit board 2. A connector receiving portion 25 for connecting the above and a light source including a plurality of (six in this embodiment) LEDs 22 are mounted.

The changeover switch SW1 switches the operation of the safety light to a "stop state (charging state)", a "normal state",
It is switched to the "inspection state", and is provided at the end of the one facing piece 2a of the printed circuit board 2 so as to come to the central position of the upper part of the instrument body 1 when the instrument body 1 is mounted on the wall surface.

The heat ray sensor 27 and the brightness sensor 28 are arranged on the one facing piece 2a of the printed circuit board 2 which is the upper part of the instrument body 1 when the instrument body 1 is mounted on the wall surface, and the LED
22 is arranged via the LED support 23 on the other opposing piece 2b which is the lower part of the device body when the device body 1 is attached to the wall surface, and when the printed circuit board 2 is arranged on the body 1A, the brightness is The sensor 28 and the LED 22 are arranged so as to separate the temporary holding unit 11 of the storage battery, and the malfunction of the brightness sensor 28 is reduced by installing the brightness sensor 28 and the LED 22 at separate locations. ing. Also,
By using the LED22, which has a long life, as a light source,
Almost no replacement of the light source is required and maintenance is easy.

The cut-off switch SW2 is for shutting off the storage battery 3 from the commercial AC power supply when the storage battery 3 is replaced, for preventing electric shock, and for opening / closing the storage battery cover 6 attached to the body cover 1B. The height is adjusted so that the operating portion 29 of the cutoff switch SW2 is projected from the body cover 1B so that the cutoff switch SW2 is turned on / off by the cutout switch SW2. Is installed.

The storage battery connector receiving portion 25 is provided right next to the notch 24 so as to be covered by the storage battery cover 6 together with the cutoff switch SW2.

The body cover 1B has a changeover switch SW.
The concave portion 44 having a rectangular switch hole 48 in which the operation portion 7 of No. 1 is slidably exposed, and a sensor window 44a for exposing the light receiving portions of the heat ray sensor 27 and the brightness sensor 28 for detecting the human body to the front surface of the instrument body 1. And a storage battery replacement portion 45 covered by the storage battery cover 6, and an opening window 46 in which the LED 22 is exposed and the light source cover 5 made of a synthetic resin having a light-transmitting property is fitted and mounted. is there.

The switch hole 48 is provided at a position which becomes the center of the upper part of the instrument body 1 when the instrument body 1 is attached to the wall surface, and the operation portion 7 for operating the changeover switch SW1 is operated from any direction of the instrument body 1. However, it is easy to operate.

The sensor window 44a is closed by a lens 41 which is a Fresnel lens for collecting external light (including heat rays) on the light receiving portions of the heat ray sensor 27 and the brightness sensor 28. The lens 41 is supported by the lens support frame 4 mounted on the printed board 2 so as to cover the heat ray sensor 27 and the brightness sensor 28.

The storage battery exchange section 45 is covered with a storage battery cover 6 pivotally attached to the instrument body 1 so as to be openable and closable, and a storage battery insertion hole for storing the storage battery 3 in a temporary storage battery holding portion 11 provided in the body 1A. 45a, an exposure hole 45d for exposing the connector receiving portion 25 of the storage battery 3 provided on the printed circuit board 2 to the surface of the instrument body 1, and a cutoff switch SW2 housed inside, and an operation unit 29 of the cutoff switch SW2.
A hollow cut-off switch storage portion 45c having an opening hole 45e for projecting only the outside thereof is provided.

The storage battery insertion hole 45a forms a storage battery accommodating portion for holding the storage battery 3 together with the temporary holding portion 11 of the storage battery of the body 1A, and is a metal spring plate attached to one side surface of the inner peripheral wall of the storage battery insertion hole 45a. The spring force of 45b presses the storage battery 3 against the opposing inner peripheral walls of the storage battery housing to prevent the storage battery 3 from falling off. Further, the storage battery insertion hole 45a
Is used when the storage battery 3 is replaced, etc.
It becomes the take-out section.

Opening hole 45e of cutoff switch housing 45c
When the storage battery cover 6 is closed, the operating portion 29 of the cut-off switch SW2 that is projected from is pressed by the storage battery cover 6, and the storage battery 3 is electrically connected to the printed circuit board 2. When the storage battery cover 6 is opened, the operating portion is opened. 29 is opened, and the storage battery 3 and the printed circuit board 2 are electrically disconnected. Since the storage battery 3 is automatically shut off by the opening / closing operation of the storage battery cover 6, the storage battery 3 is automatically shut off when the storage battery cover 6 is opened when the storage battery is replaced, etc., and the replacement work can be performed safely. You can

Further, since the cutoff switch SW2 is provided in an empty space in the storage battery cover 6, no special place is required for installing the cutoff switch SW2, and the device can be downsized.

The storage battery cover 6 has a shaft portion 60a so as to face a pair of protruding portions 60 protruding from both ends of one side surface.
Are provided respectively, and a shaft portion 60a is pivotally attached to a bearing hole 47a of a hinge 47 formed integrally with the body cover 1B, and the shaft portion 60a is openably and closably attached to the instrument body 1.

By attaching the storage battery cover 6 to the instrument body 1 so as to be openable and closable by the hinge 47, it is not necessary to remove the storage battery cover 6 when attaching or replacing the storage battery 3, and there is no risk of losing the removed parts. . Further, the hinge 47 is formed integrally with the body cover 1B, so that the hinge 47 is reinforced. Further, the hinge 47 is provided on the side surface of the body cover 1B on the side far from the storage battery insertion hole 45a, which is the take-out portion of the storage battery 3, so that the hinge 47 does not get in the way when the storage battery is replaced.

Next, the operation of the safety light configured as described above will be described with reference to FIG.

This safety light is, as shown in FIG.
The operation of the safety light by the change-over switch SW1, the "off (charging)" state in which the operation is stopped to charge the storage battery, the "normal" state in which operation is performed according to the instructions of the lighting control circuit and the power failure detection circuit described later, and the storage battery It is switched to the "battery check" state for checking item 3.

First, the "off (charging)" state will be described.

When "OFF (charge)" is selected by the changeover switch SW1, the changeover switch SW1 in FIG. 4 is connected to the position "a". At this time, the power failure detection circuit A including an operational amplifier and a flip-flop outputs a signal for controlling the ON / OFF control circuit C to be OFF, and receives the signal O
The N / OFF control circuit C is in the OFF control state, and the storage battery 3 is in a state of being cut off from the LEDs 1 to 6. Further, since the transistor Q1 is forcibly turned on, the transistor Q1 receives the outputs of the heat ray sensor 27 and the brightness sensor 28 and controls the lighting regardless of the output of the lighting control circuit B.
2 is also turned on and the transistor Q3 is turned off.

Therefore, the commercial AC power supply AC converted into the DC constant voltage by the diode bridge DB, the Zener diode ZD1 and the like flows through the transistor Q2 and the Zener diode ZD2 to the storage battery 3 to charge the storage battery 3. At this time, since no current flows through the LEDs 1 to 6,
LEDs 1-6 do not light.

Next, the "normal" state will be described.

When the "normal" state is selected by the changeover switch SW1, the changeover switch SW1 in FIG. 4 is connected to the "b" position. At this time, the power failure detection circuit A is the commercial AC power supply A
Output from C is monitored, and if there is no power failure, ON / OFF
A signal for controlling the control circuit C to be turned off is output, the ON / OFF control circuit C receiving the signal is turned off, and the storage battery 3 is shut off from the LEDs 1 to 6. At this time, since the transistor Q1 is off, the transistor Q4
Is turned on / off by the output from the lighting control circuit B.
Can be switched.

The lighting control circuit B controls the heat ray sensor 27 when the brightness detected by the brightness sensor 28 is less than a predetermined brightness.
When the person detects a person, the transistor Q4 is turned off for a predetermined time, and otherwise the transistor Q4 is turned on.

When the transistor Q4 is turned off, the transistor Q2 is turned off accordingly, the transistor Q3 is turned on, and the AC power source AC converted into the DC constant voltage passes through the transistor Q3, the diode D3, and the resistor R3, and the LED1 To 6 and the LEDs 1 to 6 light up.

When the transistor Q4 is on, the transistor Q2 is turned on and the transistor Q3 is turned off, so that the LEDs 1 to 6 are not turned on and the storage battery 3 is charged.

In summary, when the commercial AC power supply AC is not in a power failure, when the brightness detected by the brightness sensor 28 is below a predetermined brightness and the heat ray sensor 27 detects a person, the LEDs 1 to 6 are turned on for a predetermined time. Lights up, and at other times, the storage battery 3 is charged.

On the other hand, when the AC power supply AC has a power failure, the power failure detection circuit A outputs a signal for ON-controlling the ON / OFF control circuit C, and the ON / OFF control circuit C receiving the signal outputs O.
The N control state is entered, and the storage battery 3 is connected to the LEDs 1 to 6, forcibly lighting the LEDs 1 to 6.

Next, the "battery check" state will be described.

When the "battery check" state is selected by the changeover switch SW1, the changeover switch SW1 in FIG. 4 is connected to the "c" position. At this time, the AC power supply AC is cut off from the power outage detection circuit A, the power outage detection circuit A is in the same state as when the power outage was detected, and a signal for ON-controlling the ON / OFF control circuit C is output and received. The ON / OFF control circuit C is in the ON control state, the storage battery 3 is in a state of being connected to the LEDs 1 to 6, and forcibly turns on the LEDs 1 to 6.
By selecting this inspection state, it is possible to virtually create a power failure state and check whether or not this safety light operates normally during a power failure.

[0050]

According to the invention of claim 1, the instrument main body, the brightness sensor installed on the upper part of the instrument main body to detect the ambient brightness by exposing the light receiving part to the surface of the instrument main body, and the lower part of the instrument main body surface. A light source that illuminates the periphery of the instrument body, a heat ray sensor that detects the presence or absence of a person in the detection area, a lighting control circuit that turns on the light source based on the detection signals of the brightness sensor and the heat ray sensor, and a commercial A storage battery that is charged by using an AC power supply as a charging source, a storage battery storage unit that is installed in the apparatus body between the brightness sensor and the light source and stores the storage battery, and the storage battery when a power failure of the commercial AC power supply is detected. Since a power failure detection circuit for turning on the light source is provided by, by providing a storage battery storage unit between the brightness sensor and the light source, the brightness sensor and the light source are separated, Serial there is an effect that can reduce the malfunction of the brightness sensor.

According to a second aspect of the present invention, in the first aspect of the present invention, the storage battery accommodating portion is provided at a place apart from the connection portion to the commercial AC power source. Therefore, the connection portion to the storage battery and the commercial AC power source is provided. There is an effect that a sufficient insulation distance can be secured.

According to a third aspect of the present invention, in the first aspect of the present invention, the storage battery accommodating portion has a temporary holding portion into which the storage battery is fitted and temporarily holds the storage battery. Therefore, when the storage battery is replaced, There is an effect that falling off is prevented and the storage battery can be easily replaced.

According to a fourth aspect of the present invention, in the invention according to the third aspect, the instrument main body includes a body and a cover attached to the body, and a temporary holding portion for the storage battery is provided on the body. Since the storage battery housed in the temporary holding portion is held by the body and the cover, there is an effect that the holding property of the storage battery can be improved.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a storage battery cover portion pivotally attached to the instrument body and openably and closably covering the storage battery take-out portion opened on the surface of the instrument body is provided. Since the cutoff switch of the storage battery that is turned on / off by the opening / closing operation of the storage battery cover part is provided inside the storage battery cover part, by installing the cutoff switch inside the storage battery cover part, The device body can be made compact without requiring a special place for installation, and furthermore, the cutoff of the storage battery is automatically performed by the opening / closing operation of the storage battery cover part, so the ground voltage when the storage battery cover part is opened. There is an effect that can be taken against.

According to the invention of claim 6, in the invention of claim 5, the hinge for pivotally attaching the storage battery cover portion to the instrument body is provided integrally with the instrument body, so that the hinge portion can be reinforced. There is.

According to a seventh aspect of the present invention, in the sixth aspect of the present invention, since the take-out portion of the storage battery is provided at a location apart from the hinge, the hinge does not become an obstacle when replacing the storage battery, and the storage battery can be replaced. The effect is that it can be done easily.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the state of stopping the operation to charge the storage battery, the state of operating according to the instructions of the lighting control circuit and the power failure detection circuit, and the storage battery Since the changeover switch for selecting the state for inspecting is provided and the changeover switch is provided at the center of the upper part of the instrument body, there is an effect that the switch can be easily changed from any direction of the instrument body.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a safety light of this embodiment.

[Fig. 2] (A) It is a top view of the above. (B) It is a left side view same as the above. (C) It is a front view of the same. (D) It is a right view of the above. (E) It is a bottom view of the above. (F) It is a left sectional view same as the above.

FIG. 3 (a) is a front view when the storage battery cover of the above is removed. (B) It is a rear view of the above.

FIG. 4 is a circuit diagram of the above.

[Explanation of symbols]

1 instrument body 1A body 1B body cover 2 printed circuit boards 3 storage battery 5 light source cover 6 storage battery cover 11 Temporary holding part 22 LED 27 Heat ray sensor 28 Brightness sensor

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) H05B 37/02 F21Y 101: 02 41/14 310 F21S 9/02 H // F21Y 101: 02 1/02 R F term ( Reference) 3K014 AA01 GA03 3K073 AA12 AA28 AA53 AA85 AA98 BA02 BA06 BA07 BA25 BA28 CF12 CG22 CJ24 CK01 CK02 CL02 CL13 3K082 AA32 AA33 BA55 BD28 BD37 BE36 EA05

Claims (8)

[Claims] 1. An instrument main body, a brightness sensor installed on the upper part of the instrument main body to detect the ambient brightness by exposing the light receiving part to the surface of the instrument main body, and a periphery of the instrument main body installed on the lower part of the instrument main body surface. Light source, a heat ray sensor for detecting the presence or absence of a person in the detection area, a lighting control circuit for turning on the light source based on the detection signals of the brightness sensor and the heat ray sensor, and a commercial AC power source as a charging source for charging. A storage battery, a storage battery storage unit installed in the apparatus body between the brightness sensor and the light source for storing the storage battery, and a power failure to turn on the light source by the storage battery when detecting a power failure of the commercial AC power supply. A safety light including a detection circuit. 2. The safety light according to claim 1, wherein the storage battery storage portion is provided at a location apart from a connection portion to a commercial AC power source. 3. The safety light according to claim 1, wherein the storage battery accommodating portion has a temporary holding portion into which the storage battery is inserted and which temporarily holds the storage battery. 4. The instrument body comprises a body and a cover attached to the body, a temporary holding portion for the storage battery is provided on the body, and the storage battery housed in the temporary holding portion is attached to the body. The safety light according to claim 3, wherein the safety light is held by the cover and the cover. 5. A storage battery cover part pivotally attached to the equipment main body and openably and closably covers the storage battery take-out part opened on the surface of the equipment main body, and the storage battery cover part is provided inside the storage battery cover part. The safety light according to claim 1, further comprising a cutoff switch for the storage battery that is turned on / off by an opening / closing operation. 6. The safety light according to claim 5, wherein a hinge for pivotally attaching the storage battery cover portion to the instrument body is provided integrally with the instrument body. 7. The safety light according to claim 6, wherein the take-out portion of the storage battery is provided at a position apart from the hinge. 8. A changeover switch for selecting a state of stopping the operation to charge the storage battery, a state of operating according to an instruction of the lighting control circuit and the power failure detection circuit, and a state of inspecting the storage battery, The safety light according to claim 1, wherein the changeover switch is provided at the center of the upper portion of the instrument body.