JPH08202282A - Portable light emission display device - Google Patents

Abstract

PURPOSE: To provide a portable and inexpensive light emission display device reducing a light emission area, miniaturizing a structure of a power source control part, reducing a lighting time by lighting only when it is mounted at night and remarkably reducing a battery consumption amount. CONSTITUTION: This device is provided with a conversion device 20 converting the voltage and the frequency of the battery 17, an EL light emission plate 3 connected to the device 20 and partially forming a stimulable phosphor layer 9 and a control circuit 21 constituted of a photosensor 22 and a vibration sensor 23 connected to the conversion device 20 and turning on a power source circuit when a light quantity is less than a prescribed amount and vibration exists, and an on/off circuit 24 intermittently lighting the EL light emission plate 3, and the EL light emission plate 3 is formed to a belt shape, and cases 4, 5 are attached to the end parts of the light emission plate 3, and the battery 17, the conversion device 20 and the control circuit 21 are housed in the inside of the cases 4, 5, and a belt 6 is attached to both ends of the belt like EL light emission plate 17 to be formed to a ring shape, and it is attached to a helmet 2 in freely attachably/detachably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable light emitting display device using an electroluminescent light emitting plate.

[0002]

2. Description of the Related Art In recent years, a planar light emitting plate using an electroluminescence light emitting plate (hereinafter referred to as an EL light emitting plate) has come to be used as illumination for a decorative illumination, a display backlight, and the like. This EL light emitting plate has a multi-layer structure in which a phosphor layer which emits light by voltage and an insulating layer are provided between a transparent electrode and a back electrode, and the entire surface is covered with a plastic film, and an AC power source is applied between the electrodes. This is an illumination device in which the phosphor layer emits light over the entire surface.

Since it emits surface light, it emits light in a soft color with low power consumption, and can be formed into a thin and lightweight free shape, which is advantageous for backlighting, decoration, curved surface advertisement, and the like. However, this EL light emitting plate has a problem that the power supply device becomes large depending on the light emitting area. In addition, for the safety of workers and traffic controllers at the construction site at night, and the safety of students who go to school, a portable light emitting display device in which this EL light emitting plate is attached to a helmet for night illumination has been developed.

In a conventional portable light emitting display device for a helmet, a cut-out character such as Safety First is laid on the entire surface of a strip-shaped EL light emitting plate, and a battery, a voltage and a frequency of the battery are converted to the EL light emitting plate. It is a structure that connects a conversion device that operates and operates by turning on / off the power switch. However, since the EL light emitting plate emits light over the entire surface, the size of the conversion device becomes large, and the battery is exhausted because it is constantly turned on during use. In the case of the structure in which two AA batteries are attached, the usage time is 3 There was a short defect of about 4 hours.

[0005]

DISCLOSURE OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, reduces the light emitting area, downsizes the structure of the power supply control portion, and makes the lighting time only by wearing it at night. (EN) Provided is a portable light-emitting display device which is convenient and inexpensive to carry, by significantly reducing battery consumption.

[0006]

A portable light emitting display device according to claim 1 of the present invention includes a battery, a converter for converting the voltage and frequency of the battery, and a desired character connected to the converter. And an electroluminescence light emitting plate having a phosphor layer formed in a graphic portion, an optical sensor and a vibration sensor which are connected to the conversion device and a power supply circuit is turned on when the amount of light is less than a predetermined amount and there is vibration, and an electroluminescence light emitting plate. It is characterized by comprising a control circuit composed of a blinking circuit for intermittently lighting.

According to a second aspect of the present invention, there is provided a portable light emitting display device in which the electroluminescent light emitting plate is formed in a strip shape, and a case is attached to an end portion of the light emitting plate, and the battery, the converter and the control device are provided in the case. The circuit is housed, and belts are attached to both ends of a strip-shaped electroluminescent light emitting plate to form a ring shape, which is detachably attached to a helmet or an arm.

According to a third aspect of the present invention, there is provided a portable light emitting display device in which the electroluminescent light emitting plate is formed in a plate shape, and a case is attached to the back surface of the light emitting plate, and the battery, the converter and the control device are provided in the case. The circuit is housed, and a hook or a clip is provided on the back surface of the light emitting plate so that the circuit can be detachably attached to the display object.

[0009]

The function of the portable light emitting display device of the present invention is achieved by mounting it on a helmet or the like with the EL light emitting plate positioned on the front side. When working at night or riding a bicycle or a motorbike with a helmet on, the amount of light detected by the sensor is small, so the power supply circuit to the EL light emitting plate is turned on. Also, since vibration occurs during work and operation, the vibration sensor detects this and the power supply circuit is turned on.
Therefore, at night, during work or operation, the power supply circuit is turned on, the voltage of the battery is converted by the converter and converted into alternating current, and this current is switched on and off by the blinking circuit. Is set, the EL light emitting plate is intermittently turned on and blinks, and power consumption can be reduced.

Further, when the helmet is taken off and put on, the vibration sensor is not vibrated, so that the power supply circuit is turned off, and the EL light emitting plate does not emit light even if the helmet is placed in a dark place at night and the photosensor is turned on. Further, even if the user wears a helmet in a bright place during the daytime to work or drive, the vibration sensor is turned on, but the light sensor is turned off, so that the power is cut off and the EL light emitting plate is not turned on.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. In the figure, reference numeral 1 denotes a portable light emitting display device attached to a helmet 2. The portable light emitting display device 1 has a battery case 4 and a control unit case 5 attached to both ends of a strip-shaped EL light emitting plate 3. The rubber belt 6 is attached here to form a ring shape, which is detachably attached to the helmet 2.

As shown in FIG. 2, the strip-shaped EL light-emitting plate 3 has a phosphor layer 9 on the front surface of which is a "safety first" character portion 7, two parallel lines, and a rectangular figure portion 8. Has been formed. As shown in FIG. 3, a cross-sectional structure of the EL light emitting plate 3 is such that a transparent electrode 11 is provided under a transparent film 10 and a phosphor layer 9 is formed under the transparent electrode 11 corresponding to a character portion 7 and a graphic portion 8. In a multilayer structure in which an insulating layer 12 is formed underneath, a back electrode 13 is further formed under the insulating layer 12, and a plastic film 14 is provided on the bottom surface.

The battery case 4 and the control unit case 5 are shown in FIG.
As shown in FIG. 3, curved hooks 16 at the bottom are formed, and the hooks 16 are hooked on the edges of the helmet 2 to be stabilized. Inside the battery case 4, for example, two AAA batteries 17 are housed. A control mechanism is housed inside the control unit case 5, and a circular transparent portion is provided on the side surface of the case to form a light detection window 19.
In the control mechanism, as shown in FIG. 4, a battery 17 is connected to a converter 20 for converting the voltage and frequency of the battery 17. In the converter 20, when the voltage of the battery 17 and DC 3V, converts the frequency as well as boosting the voltage, for example, to 120V to the AC of the 400H _Z. Furthermore, this conversion device 20
It is connected to the EL light emitting plate 3 via the control circuit 21. The control circuit 21 is composed of an optical sensor 22, a vibration sensor 23, and a blinking circuit 24.

The photosensor 22 is built in the photodetection window 19 formed on the side surface of the control unit case 5, detects it in a bright place in the daytime, and turns off the power supply to the EL light emitting plate 3. It turns on after dark at night. Further, the vibration sensor 23 detects the vibration and turns on the power supply to the EL light emitting plate 3 only while the vibration is being applied, and turns off the power supply in a stationary state where there is no vibration. Further, the blinking circuit 24 can set the blinking time at an arbitrary interval, for example, the power-on interval can be set so as to alternately turn on for 1 second and turn off for 2 seconds.

Next, the operation of the portable light emitting display device 1 mounted on the helmet 2 having the above structure will be described. When performing night work such as road construction, first, as shown in FIG. 1, a ring-shaped portable light emitting display device 1 is attached from above the helmet 2 so that the EL light emitting plate 3 is located on the front side, and battery cases on both sides are attached. 4 and J-shaped hooks attached to control unit case 5
Hook 16 and 16 on the edge of helmet 2 to fix it. As described above, the work is performed by wearing the helmet 2 to which the portable light emitting display device 1 is attached.

When working on the helmet 2 at night, a light sensor is detected from the light detection window 19 provided on the side surface of the control unit case 5.
Since the amount of light entering 22 is small, the power supply circuit to the EL light emitting plate 3 is turned on. Since the helmet 2 is vibrating during work, the vibration sensor 23 shown in FIG. 4 detects this and the power supply circuit is turned on. Therefore, at night, the power supply circuit is turned on in the working state, the voltage of the power supply of the battery 17 is converted by the converter 20 and converted into the alternating current, and this current is further changed by the blinking circuit 24. The turning-on interval is set to, for example, 1: 2, and the EL light emitting plate 3 is turned on intermittently. Therefore, the EL light emitting plate 3
However, it emits light intermittently, but has a flashing action as compared with continuous lighting, which makes it possible to confirm the presence of an operator from a distance, which is safe and consumes less power.

As shown in FIGS. 2 and 3, the EL light emitting plate 3 has a phosphor layer 9 corresponding to the character portion 7 and the graphic portion 8.
Since it is partially formed, it consumes less power than the one that emits light over the entire surface, and the character portion 7 and the graphic portion 8
Can be confirmed even from a distance because it clearly rises. If you take off the helmet 2 after finishing the work, the vibration sensor 23 will not be vibrated, so the power supply circuit will be turned off, and even if the photo sensor 22 is on in the dark at night, it will emit EL light. The plate 3 does not emit light. Even if the helmet 2 is worn in a bright place during the daytime, the vibration sensor 23 is turned on, but the optical sensor 22 is turned off, so that the power is cut off and the EL light emitting plate 3 is not turned on.

That is, since the light sensor 22 and the vibration sensor 23 are provided, a manually operated power switch is not necessary, and the EL light emitting plate 3 is automatically turned on only during nighttime work. According to the experiment, two AAA batteries 17 can be used for 48 hours without battery consumption, which is 12 times better than the conventional battery that can be used for only 4 hours.

In the above embodiment, the portable light-emitting display device 1 mounted on the helmet 2 worn by workers who perform road works at night and traffic controllers has been described, but it may be worn by students who go to school by bicycle and people who ride motorcycles. It can also be attached to a helmet. In this case, if it takes 30 minutes to go to school or work, you can use the battery for about 1 month without replacing the battery.

FIG. 5 shows another embodiment of the present invention.
The EL light emitting plates 3 and 3 are attached to the surface of the armband 27, the storage case 28 is attached to the outside of this end portion, and the surface fastener 29 is attached to the inside. The EL light emitting plate 3 has a phosphor layer 9 formed in a mesh shape. When the phosphor layer 9 is three-dimensionally enlarged and shown, the phosphor layers 9 are arranged in a lattice shape as shown in FIG. Further, a light detection window 19 is formed on the side surface of the storage case 28, and the battery 17, the conversion device 20, and the control circuit 21 are stored inside this. This control circuit 21 is similar to that shown in FIG. 4, and includes an optical sensor 22 and a vibration sensor disposed inside the light detection window 19.
23 and a blinking circuit 24.

This armband-type portable light-emitting display device 1 has an arm light emitting plate 3 on its arm when carrying out road construction at night or riding a bicycle or a motorbike.
It is possible to detect the outdoor brightness and vibration and automatically blink the EL light emitting plate 3 simply by wrapping and fixing the surface fastener 29. Further, since the phosphor layer 9 is formed in a mesh shape in the EL light emitting plate 3, it seems that the entire EL light emitting device emits light with less power consumption.

FIG. 7 shows another embodiment of the present invention.
A circular EL light emitting plate 3 is attached to the front surface of a hollow cylindrical storage case 28, and a hook 16 is integrally attached to the back surface. The EL light emitting plate 3 has a phosphor layer 9 formed in a mesh shape, a light detection window 19 is formed on a side surface of the storage case 28, and a battery 17 and a battery 17 are provided inside the storage case 28 as in FIG. A converter 20 and a control circuit 21 are housed.

The portable light-emitting display device 1 of this plate type structure can be easily attached by inserting the hook 16 into the chest pocket when performing road construction at night or riding a bicycle or a motorbike. it can. Further, it is not limited to being directly attached to the body, and can be directly attached to a handle or a luggage carrier of a bicycle or a motorbike, or a bag. In the above embodiment, the hook 16 is integrally formed on the back surface of the storage case 28, but a clip may be attached.

In the above embodiment, the case of using the AAA battery is shown, but a button type battery may be used.
Alternatively, a rechargeable battery may be used as the battery, and an openable / closable plug terminal may be attached to the battery housing and the terminal may be inserted into a charging device to charge the battery. Further, in the above-mentioned embodiment, the case of applying to a helmet, armband type, plate type, etc. is shown, but the best type may also be used,
It can also be applied to megaphones and hats for support such as baseball and soccer held at night, pouches and pen-type lights.

[0025]

As described above, according to the portable light emitting display device of the present invention, since it is provided with the optical sensor and the vibration sensor, a manually operated power switch is not required, and it is automatically operated only while moving at night. The EL light emitting plate is turned on, and the phosphor layer is partially formed corresponding to the characters and figures, and this is turned on intermittently, which reduces battery consumption and The life can be doubled. In addition, since the phosphor layer is partially formed, the capacity of the conversion device is reduced and the overall size can be reduced, which is convenient for carrying.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a portable light emitting display device is attached to a helmet according to an embodiment of the present invention.

FIG. 2 is a front view of the EL light emitting plate shown in FIG.

3 is a cross-sectional view of the EL light emitting plate shown in FIG.

FIG. 4 is a circuit diagram showing a control portion of a portable light emitting display device.

FIG. 5 is a perspective view showing an armband type portable light emitting display device according to another embodiment of the present invention.

6 is a perspective view showing a phosphor layer of the EL light emitting plate shown in FIG.

FIG. 7 is a perspective view showing a plate type portable light emitting display device according to another embodiment of the present invention.

[Description of sign]

 1 Portable Light Emitting Device 2 Helmet 3 EL Light Emitting Plate 4 Battery Case 5 Control Case 6 Rubber Belt 7 Character Part 8 Graphic Part 9 Phosphor Layer 10 Transparent Film 11 Transparent Electrode 12 Insulating Layer 13 Back Electrode 16 Hook 17 Battery 19 Light Detection window 20 Converter 21 Control circuit 22 Optical sensor 23 Vibration sensor 24 Flashing circuit 27 Armband 28 Storage case

Claims (3)

[Claims] 1. A battery, a conversion device for converting the voltage and frequency of the battery, an electroluminescent light emitting plate connected to the conversion device and having a phosphor layer formed on a desired character or graphic portion, and the conversion device. Is connected to the light sensor, the power sensor is turned on when the amount of light is less than a predetermined amount and there is vibration, and a vibration sensor, and a control circuit composed of a blinking circuit for intermittently lighting the electroluminescence light emitting plate. Portable light emitting display device. 2. A battery, a conversion device for converting the voltage and frequency of the battery, an electroluminescent light emitting plate connected to the conversion device and having a phosphor layer formed on a desired character or graphic portion, and the conversion device. Connected to the light sensor, a power sensor is turned on when the amount of light is less than a predetermined amount and there is vibration, and a vibration sensor, and a control circuit composed of a blinking circuit for intermittently turning on the electroluminescence light emitting plate. The luminescence light emitting plate is formed in a strip shape, a case is attached to the end of the light emitting plate, the battery, the conversion device and the control circuit are housed in this case, and belts are attached to both ends of the strip electroluminescence light emitting plate. To form a ring,
A portable light emitting display device characterized by being detachably attached to a helmet or an arm. 3. A battery, a conversion device for converting the voltage and frequency of the battery, an electroluminescent light emitting plate connected to the conversion device and having a phosphor layer formed on a desired character or graphic portion, and the conversion device. Connected to the light sensor, a power sensor is turned on when the amount of light is less than a predetermined amount and there is vibration, and a vibration sensor, and a control circuit composed of a blinking circuit for intermittently turning on the electroluminescence light emitting plate. The luminescence light emitting plate is formed in a plate shape, a case is attached to the back surface of the light emitting plate, the battery, the conversion device and the control circuit are housed in this case, and a hook or clip is provided on the back surface of the light emitting plate. A portable light emitting display device characterized by being detachably attached to an object to be displayed.