JP3054421U - Indicator light - Google Patents

Abstract

(57) [Summary] [Problem] To provide an indicator light that can sufficiently inform the position of a switch or the like even at night or in a dark place, can be manufactured at low cost, and consumes less power. thing. SOLUTION: This is an indicator light which is turned on when the ambient brightness decreases, and which is a sensor unit (4) for sensing the ambient brightness, and a comparator (4) connected to the sensor unit (4). 5), a light emitting means (2) connected to the comparator (5), and a battery (3) for supplying electricity to the light emitting means (2).

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an indicator light, and more particularly, to an indicator light that lights or blinks due to a decrease in ambient brightness.

[0002]

[Prior art]

 At night or in a dark place, it is difficult to find the position of a switch such as a lighting device, so it may take time to switch on a lighting device.

[0003] Therefore, conventionally, the switch is coated with a luminous paint or a plate or the like coated with the luminous paint so that the position of the switch such as a lighting fixture can be easily known even at night or in a dark place. A method of providing near switches such as lighting fixtures has been adopted. By using this luminous paint, it is possible to know the position of a switch such as a lighting fixture at night or in a dark place.

[0004]

[Problems to be solved by the invention]

 By the way, the luminous paint is generally made of a phosphor material having a property of changing its energy into visible light upon being stimulated by visible light, short-wavelength fluctuating light such as ultraviolet light or the like. Paints are the most commonly used paints, which are called phosphorescent paints.

That is, when zinc sulfide is used as a matrix, copper is added as an activator, a flux is mixed, and the mixture is fired, a phosphor having a remarkable afterglow of green light can be obtained. When the membrane is stimulated with sunlight or light orange light, it emits light for a sufficiently long time even at night or in a dark place. This is generally called a phosphorescent paint, and a method of applying this paint to a switch of a lighting fixture or the like has been conventionally used.

However, as described above, in order to cause the phosphorescent paint to emit light at night or in a dark place, the coating film must be sufficiently stimulated with sunlight or the like. Does not emit light.

On the other hand, lighting equipment switches and the like are generally provided in a room or the like. Therefore, when the switch is coated with a luminous paint, or near the switch, a plate or the like is coated with a luminous paint. In many cases, it is difficult to absorb sunlight even when the light is provided, and it is difficult to emit light for a long time at night or the like.

[0008] Conventionally, there has not been provided a vehicle or the like that informs the position of a switch or the like for a long time even when the engine is completely stopped, and also in a bicycle or shoes. No means was provided for notifying its position even when stopped.

Therefore, the present invention provides an indicator light that can sufficiently inform the positions of switches and the like even at night or in a dark place, can be manufactured at low cost, and further consumes less power. The task is to provide.

[0010]

[Means for Solving the Problems]

 The indicator light of the present invention is an indicator light that is turned on when the ambient brightness decreases, and includes a sensor unit for detecting the ambient brightness, a comparator connected to the sensor unit, It is characterized by comprising a light emitting means connected to the comparator, and a battery for supplying electricity to the light emitting means.

In the indicator lamp of the present invention, a sensor unit for sensing the brightness of the surroundings, a comparator which is activated by a signal from the sensor unit, and a display means which is turned on when the comparator is activated And the light emitting means emits light when the surroundings become dark. For this reason, by providing the display of the present invention near the switch section of a lighting fixture or the like, or near the switch section of an automobile or the like, it is possible to use the display in a dark state such as at night or in a dark place. It is possible to easily know the position of the switch and the like.

In addition, since a battery is used as a power source of the light emitting means, the entire indicator light can be reduced in size. Further, the light emitting means is provided only when the surroundings are dark due to the sensor unit and the comparator. It can be used for a long time without replacing the battery to emit light.

[0013]

[Embodiment of the invention]

 The indicator light of the present invention has a sensor unit for sensing the brightness of the surroundings between the light emitting means and the battery, and a comparator that operates based on a signal from the sensor unit, and the surroundings are dark. Then, the light emitting means emits light.

Here, it is preferable to use an LED as the light emitting means, so that the life of the battery can be prolonged.

When an LED is used, it is more preferable to use a blinking LED, or to connect a blinking IC to the LED to blink the LED, thereby further extending the life of the battery. Becomes possible.

Further, it is preferable to use Cds or an infrared receiving LED as the sensor, and it is preferable to use a comparator as the comparator. This makes it possible to cause the light-emitting means to emit light more accurately with low power consumption when the surroundings are dark.

[0017]

【Example】

 FIG. 1 is a block diagram showing the configuration of the indicator light of the present embodiment. In FIG. 1, reference numeral 1 denotes the indicator light of the present embodiment.

In FIG. 1, reference numeral 2 denotes an LED as a light emitting unit, and reference numeral 3 denotes a battery as a power supply.

In the indicator lamp 1 of this embodiment, a Cds 4 as an optical sensor and a comparator 5 as a comparator are interposed between the LED 2 and the battery 3.

As is well known, Cds has a property of decreasing resistance when exposed to light, and a comparator has a property of comparing an input voltage with a reference voltage and operating according to the result. For this reason, when this comparator and Cds are interposed between the LED 2 and the battery 3, the surroundings become dark and the voltage of the input signal from the Cds changes. It is possible to emit light.

As described above, in the indicator lamp of the present embodiment, the light emitting means is turned on only in the dark state using the Cds and the comparator, so that the battery life can be extended. . In addition, since an LED with low power consumption is used as the light emitting means, the battery life can be further extended.

In this embodiment, a power-saving comparator IC is used as the comparator 5, so that the power consumption can be reduced. Because of the use of LEDs, power consumption can also be kept low.

Next, a method of using the indicator light of the present embodiment will be described. When the indicator light of the present embodiment is used, the vicinity of a switch portion of a lighting fixture such as a room, the vicinity of a switch portion of a room such as an automobile, or It is only necessary to provide the indicator light of this embodiment in a conspicuous place such as a bicycle, a shoe, or the like. As a result, the LED 2 does not emit light when the surroundings are bright, but emits light when the surroundings are dark.

Here, the relationship between the comparator 5, the Cds 4, the LED 2, and the battery 3 will be described. In the indicator 1 of the present embodiment, the signal 6 from the battery 3 is used as a reference voltage in the comparator 5. Similarly, electricity is supplied from the battery 3 to Cds4, and the comparator 5 compares the reference voltage 6 with the input voltage 7 using the signal via Cds4 as an input voltage.

When the input voltage 7 changes when light is applied to Cds, the comparator 5 operates to supply electricity to the LED 2, thereby causing the LED 2 to emit light. FIG. 2 is a flowchart showing this operation. As shown in FIG. 2, the indicator lamp 1 of this embodiment has a structure in which the LED 2 continues to emit light as long as the surroundings remain dark. Unlike the conventional one using LED, it is possible to maintain the light emitting state of the LED 2 irrespective of the presence or absence of sunlight absorption during the day.

Although the case where the LED 2 is turned on in the indicator lamp 1 of the present embodiment has been described, the LED 2 may be turned on and off instead of turning on the LED 2. For example, a blinking LED may be used as the LED 2, or a blinking IC 6 may be interposed between the comparator 5 and the LED 2 as shown in FIG. 3 to thereby blink the LED. When the LED 2 is made to blink as described above, the presence of the indicator lamp of the present embodiment can be more emphasized, the position of the switch and the like can be more easily known, and the LED 2 can be turned on. As a result, the life of the battery 3 can be extended.

As described above, since the indicator lamp of the present invention has a structure in which the LED emits light using the battery, unlike the case where the phosphorescent paint is used, the LED does not matter regardless of the degree of absorption of sunlight. Since it is possible to continuously emit light, by providing this in the vicinity of the switch unit of the lighting fixture, it is possible to reliably inform the switch unit of the lighting fixture or the like at night or in a dark place.

In addition, the indicator light of the present invention has a structure in which the LED emits light only when the surroundings are dark using Cds, so that the LED can be operated more accurately and the battery can be operated more accurately. It is also possible to extend the life.

Furthermore, since the power saving type comparator IC is used as the comparator and the LED with low power consumption is used as the light emitting means, the power consumption can be reduced. It is also possible to extend the life of the battery.

Further, by using a blinking LED or blinking the LED by using a blinking IC, it is possible to further extend the life of the battery.

[0031]

[Effect of the invention]

 The indicator light of the present invention is implemented in the form described above, and has the following effects.

[0032] The indicator light of the present invention is an indicator light that is turned on when the ambient brightness decreases, and includes a sensor unit for sensing the ambient brightness, and a comparator connected to the sensor unit. And a light emitting means connected to the comparator, and a battery for supplying electricity to the light emitting means, wherein the light emitting means emits light when its surroundings become dark. For this purpose, the display of the present invention should be provided near the switch section of lighting equipment, etc., or near the switch section of automobiles, etc., or in prominent places such as bicycles and shoes. When the surroundings are dark, it is possible to easily inform the user of the position of the switch and the like and the presence of the bicycle or shoes.

Further, since a battery is used as a power source of the light emitting means, the entire indicator lamp can be reduced in size. Further, the light emitting means can be used only when the surroundings are dark due to the sensor unit and the comparator. It can be used for a long time without replacing the battery to emit light.

Further, by making the light emitting means blink using the blinking LED or the blinking IC, it is possible to further extend the life of the battery.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an indicator light of the present invention.

FIG. 2 is a flowchart illustrating an operation of the embodiment of the indicator light of the present invention.

FIG. 3 is a block diagram showing a configuration of the indicator light of the present invention when a blinking IC is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indicator light 2 LED 3 Battery 4 Cds 5 Comparator 6 Flashing IC

Claims (7)

[Utility model registration claims] An indicator light which is illuminated when ambient brightness is reduced, comprising: a sensor unit (4) for sensing ambient brightness; and a comparator connected to the sensor unit (4). (5) An indicator light comprising: a light emitting means (2) connected to the comparator (5); and a battery (3) for supplying electricity to the light emitting means (2). . 2. An indicator lamp which is turned on when the ambient brightness decreases, comprising: a sensor unit (4) for sensing ambient brightness; and a comparator connected to the sensor unit (4). (5) and a blinking IC connected to the comparator (5)
(6) A display characterized by comprising: a light emitting means (2) connected to the blinking IC (6); and a battery (3) for supplying electricity to the light emitting means (2). light. 3. The indicator lamp according to claim 1, wherein said light emitting means is an LED. 4. An indicator light according to claim 1, wherein said light emitting means is a flashing LED. 5. The indicator light according to claim 1, wherein the comparator is a comparator. 6. The indicator lamp according to claim 1, wherein the sensor section (4) is made of Cds. 7. The indicator lamp according to claim 1, wherein the sensor section is an infrared light receiving LED.