JPS6380295A - Low frequency flash display - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a system for visually detecting the usage status of various household appliances, not only for sailors but also for physically disabled people who cannot detect sounds, including especially hearing-impaired elderly people. The present invention relates to a low-frequency flashing indicator that can prevent users from forgetting to turn off the switch, prevent fires and accidents, and contribute to energy savings.

[Conventional technology]

BACKGROUND ART Conventionally, the usage status of household appliances whose usage status cannot be confirmed visually has been confirmed by listening to the sound of the appliance, such as a radio.

Therefore, a hearing-impaired person cannot easily check whether the radio is turned off or whether the power switch of a record player, stereo, etc. is turned off after the performance is finished.

Furthermore, they could check whether the washing machine was working or not by listening to its sound.

In addition, for devices that do not normally make noise, such as electric irons, it is checked by looking at the switch to see if they are turned off.

[Problem that the invention seeks to solve]

The above radios, stereos, etc. are equipped with a power lamp or a frequency display panel lamp for tuning, so even if the sound stops, you can tell whether the power is still on by looking at this lamp. However, in reality, small lamps that are always on are difficult to see, and are often difficult to notice depending on the overall brightness of the room.

Also, in the case of equipment that makes loud noises, such as washing machines, it is normal that there is no power lamp attached, so if someone is unable to hear the sound or there is other noise, it may be difficult to tell when the washing is complete.
It is not possible to confirm the completion of rinsing and dehydration, making it impossible to work efficiently.

Furthermore, some silent electric irons are equipped with a temperature sensor in addition to the switch for safety.
Checking whether the power switch is turned on or off may be incorrect or
Since you can't check it if you leave the area, you have to go back and look at it, which is a hassle.

[Means for solving problems]

In order to solve the above-mentioned problems, the low frequency blinking display according to the present invention comprises a low frequency oscillation circuit configured to obtain a low frequency current of 1 to 5 Hz, and in which at least one The semiconductor light emitting device was configured to blink.

[Effect]

That is, when a semiconductor light emitting element blinks and emits light while a radio, stereo, etc. is in use, it can be easily determined from the blinking of the light emitting element whether the sound is not output due to the end of the broadcast time or because the power switch has been forgotten to be turned off.

At that time, it may be difficult to see the light with a lamp that is always on, and even if the room is bright and the eyes are accustomed to it, it may be difficult to clearly see the light with a lamp that is too bright.
By blinking, the difference in brightness and darkness appears large and can strongly call attention. Especially the flickering,
Numerous experimental results have shown that human vision is most sensitive when the frequency is 1 to 5 Hz.

Furthermore, in the case of devices that do not emit sound, such as electric irons, it is possible to easily check whether the user has forgotten to turn off the power switch by causing the light emitting element to flash and emit light even when the user is away from the place.
Accidents can be prevented.

And, the completion of use of a washing machine etc. can only be heard with a sound.
Even if it cannot be recognized, it can be easily confirmed by the flickering of the light emitting element.

By using a semiconductor light emitting device, this effect can be achieved with a small amount of power consumption compared to using a lamp.

(First Embodiment) A flashing indicator according to the present invention will be explained based on the drawings as an embodiment in which it is applied to an electric iron.

Figure 1 shows a low-frequency semiconductor light-emitting device in which a pulse current is applied to two light-emitting diodes (LEDs) IA and IB that emit light of different colors in order to cause them to blink alternately at a predetermined time interval, for example, 0.5 seconds. This circuit 2 shows a multivibrator circuit 2 configured as an oscillation circuit. This circuit 2 includes two transistors TRI and TR2, and four resistors R1, R2, R3, and
It consists of R4 and two capacitors Cl-C2.

This multivibrator circuit 2 is built into a grip part 4 of an electric iron 3 shown in FIG. The light emitting diodes IA and IB are connected via a power supply circuit so that when the switch 5 is on, the light emitting diodes IA and IB oscillate and blink, and when the switch 5 is off, they stop blinking.

The low frequency generated by the multivibrator circuit 2 is 1 to 5.
As a result of Hertz's experiments, it was found that the amount of light also responds sensitively to human vision.

By making the light emitting diodes IA and IB different colors, the visual conditions for one light emitting diode IA and the other light emitting diode IB can be made different from the position of the human eye viewing them, for example. Even when one light emitting diode IA is difficult to see due to indoor light reflection, the other light emitting diode IB can easily escape such disturbance, and at least one light emitting diode 1^ is surely visible.

[Second Example] As shown in FIGS. 3 and 4, using an IC chip,
In order to further reduce the size and cost, 1 is used as the multivibrator circuit 2 as a low frequency oscillation circuit, and light emitting diodes IA-IB are used as semiconductor light emitting elements.
It is configured to flicker at Hertz. Reference numeral 6 denotes a case housing the circuit 2, and the light emitting diodes IA and IB are provided at the corners of the case 6 so as to protrude from each other at intervals. 7 is a table-mounted name tag to which the case 6 is attached,
It is constructed from a transparent plastic panel, and is inserted from the back into a hole drilled in the upper corner of the panel so that it protrudes slightly from the front.

According to this configuration, the light emitting diodes IA and IB can be made to flicker to designate a speaker at a meeting or to indicate what is being said at a public meeting. .

Incidentally, the light emitting diodes IA and IB may be inserted into holes made on the lines of the characters written on the name tag 7, thereby producing an effect of attracting even more attention.

[Third Example] As shown in FIG. 5, here, a UJT oscillation circuit is used as a low frequency oscillation circuit, and an EL element IA-IB is configured to blink at 1 to 5 Hz as a semiconductor light emitting element. There is. The EL elements LA and IB are provided at intervals on the upper edge of the road construction sign panel 8, as shown in FIG.

The semiconductor light emitting elements may be installed in one or three pieces as required, and their colors may be different or the same color, as long as the semiconductor light emitting elements blink at predetermined time intervals.

〔Effect of the invention〕

According to the blinking indicator of the present invention, the semiconductor light emitting element blinks and emits light to call attention to the forgetting to turn off the power switch of a radio, stereo, etc., so even people with hearing disabilities can easily recognize this.

Even people without hearing abnormalities can use a lamp that is always on, like a so-called power switch, even if the room is bright and their eyes are accustomed to it and cannot see the light clearly. By blinking at predetermined time intervals, a large difference in brightness appears, which can strongly call attention to the light.

In addition, even if a device does not emit a sound, such as an electric iron, by making the light emitting element flicker and emit light even when you are away from the place, you can easily check if you have forgotten to turn off the power switch.
Accidents can be prevented.

Furthermore, by using a semiconductor light emitting element, there is an advantage that this effect can be achieved with a small amount of power consumption compared to using a lamp.

[Brief explanation of the drawing]

The drawings show an embodiment of the blinking indicator according to the present invention, FIG. 1 is a multivibrator circuit diagram in the first embodiment, FIG. 2 is an overall diagram applied to an electric iron, and FIG. 3 is a diagram of the multivibrator in the first embodiment. The multivibrator circuit diagram of the second embodiment, Figure 4, is as follows:
FIG. 5 shows an overall diagram of the UJT oscillation circuit in the third embodiment, and FIG. 6 shows an overall diagram of the application to a road construction sign panel. Low frequency oscillation circuit...2, semiconductor light emitting device...IA,
IB.

Claims (3)

[Claims] (1) A low-frequency blinking indicator configured to have a low-frequency oscillation circuit configured to obtain a low-frequency current of 1 to 5 Hz, and configured to cause at least one semiconductor light-emitting element to flicker with the low-frequency oscillation circuit. (2) The low frequency blinking indicator according to claim 1, wherein the semiconductor light emitting element is two light emitting diodes, each of which is configured to blink alternately with the low frequency current. (3) The low frequency blinking indicator according to claim (2), wherein the one light emitting diode emits light in a different color from the other light emitting diode.