JPH0263038B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention relates to an iron in which the set temperature and current temperature of the base of the iron can be known. Construction of conventional irons and their problems Most conventional irons have lamps connected to both ends of the heater, and the lamps are turned on only when the heater is energized. For this reason, the user has no idea when the temperature will reach the right temperature, and even if the temperature has reached the right temperature, the only way to know is to actually touch the iron base, or to change the lamp from on to off, or from off to on. I had no choice but to see how the temperature control works. Furthermore, since there is no display of the current temperature when ironing, it is often the case that the user does not know that the temperature is too high or too low for the fabric. Purpose of the Invention The present invention eliminates the above-mentioned drawbacks of conventional irons, and not only displays the set temperature of the iron base, but also displays the current temperature of the iron base in multiple ways. The present invention provides an iron that uses a common display element to notify the operating mode, that is, lighting and blinking. Composition of the Invention The iron of the present invention includes a heating element that heats the base of the iron, an operation means that switches the set temperature of the base, a temperature detection element that detects the temperature of the base, and a temperature detection element that detects the temperature of the base. temperature control means for comparing the current temperature of the base and the set temperature set by the operating means and outputting the result; and an output of the temperature control means so that the current temperature of the base becomes the set temperature by the operating means The display device includes a power control means for controlling power, and a display device for displaying a set temperature by the operating means and a current temperature by a temperature sensing element, and the display device includes a set temperature display means for displaying the temperature by sharing a plurality of display elements. The set temperature is displayed by lighting or blinking one of the display elements corresponding to the set temperature, and the current temperature is displayed by setting another display element corresponding to the base temperature. It is displayed by flashing or lighting in the opposite direction to the temperature display, and when the base temperature reaches the set temperature, it is configured to display only the set temperature instead of the current temperature display and the set temperature display. be. DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is an operating means for switching the set temperature of the base of the iron, and 2 is an operating means 1.
3 is a temperature control device that compares the current temperature of the base detected by a temperature detection element (to be described later) with the set temperature set by the operating means 1 and outputs the result. 4 is a power control means for controlling power so that the current temperature of the base becomes the temperature set by the operating means 1 according to the output of the temperature control means 3; 5 is a power control means for controlling the power supply by the power control means 4 of the iron; A heating element for heating the base; 6 a temperature detection element for detecting the temperature of the base; 7 a current temperature display means for displaying the current temperature based on the output of the temperature detection element 6; 8
is an appropriate temperature notification means that detects and notifies whether the temperature of the base of the iron has reached the appropriate temperature based on the output of the temperature detection element 6 and the output of the operating means 1. Next, in Fig. 2, 9 is the iron body, 10
11 is the base of the iron, and 11 is the temperature control means 3.
12 is a select switch for selecting the temperature of the base, and constitutes the operating means 1. Reference numeral 13 denotes a sounding body constituting the appropriate temperature notification means 8. In this embodiment, the sounding body 13 is used to notify the appropriate temperature, but it goes without saying that the same effect can be achieved even if a display element such as a light emitting element is used. Next, in FIG. 3, 14 is a microcomputer that constitutes the main part of the control device 11, including a CPU,
It is a one-chip microcomputer consisting of ROM, RAM, input/output ports, etc. Reference numeral 15 denotes an A/D converter, which is connected to convert the signal from the temperature detection element 6 into a binary code and input it to the input port of the microcomputer 14. 16 is a transistor for driving the power control means 4; The base terminal of transistor 16 is connected to the output port of microcomputer 14. Reference numeral 17 denotes an AC power source, and when the transistor 16 is driven, the power control means 4 becomes conductive, and power is supplied from the AC power source 17 to the heating element 5. 18 is a transistor whose base terminal is connected to the output port of the microcomputer 14 and whose collector terminal is connected to the sounding body 13, and when an audible frequency rectangular wave signal is applied from the microcomputer 14 to the base terminal of the transistor 18, Pronunciation body 1
3 is driven. Reference numeral 19 denotes a display device having a set temperature display means 2 and a current temperature display means 7 for displaying temperature by sharing a plurality of display elements; in this embodiment, four display elements are used.
Although the number of light emitting diodes 19a to 19d is used, it is of course possible to use four or less light emitting diodes or four or more light emitting diodes, and display elements other than light emitting diodes may be used. The set temperature is displayed by lighting or flashing one of the display elements corresponding to the set temperature, and the current temperature is displayed by flashing or lighting the other display elements corresponding to the base temperature in the opposite direction to the set temperature display. When the temperature of the base reaches the set temperature, only the set temperature is displayed instead of the current temperature display and the set temperature display. A select switch 12 is connected to one of the input ports of the computer 14, and by pressing the select switch 12, the temperature setting of the microcomputer 14 is sequentially changed to display the above-mentioned display. 20
is a DC power supply, which is supplied to the entire control device 11. Next, the display function of the display device 19 will be explained. Light emitting diode 19 of display device 19 in FIG.
19b indicates the base temperature of the iron.
Display temperature setting to 160℃, similarly set 19c to 180℃
℃, 19d is set temperature display of 200℃. In this example, the set temperature is displayed by continuously lighting each light emitting diode. For example, when the temperature of the iron base is set to 200° C., only one light emitting diode 19d corresponding thereto is in a continuous lighting state. Furthermore, the display device 19 also displays the current temperature of the iron base. That is, in this case, the base temperature of the light emitting diode 19a is 150°C.
When the temperature is below ℃, it flashes in the opposite direction to the set temperature display.
When the temperature of the base of the light emitting diode 19b is 150°C or more and less than 170°C, the temperature of the light emitting diode 19c is 170°C or more and less than 190°C.
19d blinks when the temperature is below 190℃, and 19d blinks when the temperature is 190℃ or higher, and the current temperature can be determined by checking the position of the blinking light emitting diode. When the temperature of the base reaches the set temperature, only one light emitting diode that displays the set temperature changes from the two displays, the current temperature display and the set temperature display, to lighting. In this way, the set temperature is indicated by a lit light emitting diode, the current temperature of the base is indicated by a blinking light emitting diode, and when the set temperature is reached, only the light emitting diode corresponding to the set temperature is lit. . Next, a series of operations of the iron configured as described above will be explained using FIG. 4. When the power is turned on in step 21, the display device 1 is turned on in step 22.
9 displays the "off" setting. In step 23, it is checked whether the select switch 12 has been pressed. If the select switch 12 is pressed, the process moves to step 24 to update the settings. In other words, if it was initially set to "off", pressing the select switch 12 once will set it to 160°C, pressing it again will set it to 180°C, and then repeating this to set it to 200°C. Select switch 12
Press to update the setting to "off" again. Step 25 is a process for releasing the latch on reaching the appropriate temperature, which will be described later. That is, by pressing the select switch 12, the settings are updated and it is determined that the base temperature has not reached the set temperature. In step 26, it is determined whether the setting is "off" or something else. If it is not set to "off", the process moves to step 27 and lights up the light emitting diode corresponding to the set temperature. That is, if the temperature is set to 160°C, the light emitting diode 19b is turned on, and if the temperature is set to 180°C, the light emitting diode 19c is turned on. Step 28 involves checking the temperature of the base of the iron. The temperature signal of the temperature detection element 6 is A/
The D converter 15 reads the binary code and determines the current temperature of the base. Step 29 compares the current temperature of the base obtained in step 28 with the set temperature determined in step 24. If the current temperature is below the set temperature, the process moves to step 30, and the transistor 16 is driven to make the power control means 4 conductive. Therefore, the heating element 5
Electric power is supplied from the AC power supply 17 to increase the temperature of the base. If the current temperature exceeds the set temperature in step 29, the process moves to step 31. In step 31, the driving of the transistor 16 is stopped and the power control means 4 is brought into a non-conductive state. Therefore, power is no longer supplied to the heating element 5. step
When set to “Off” in 26, processing is performed in steps.
The process moves to step 32, where the light emitting diode 19a corresponding to "off" is turned on, and then the process moves to step 31, where the power supply to the heating element 5 is stopped. In step 33, it is determined whether the current temperature of the base has become equal to the set temperature, that is, whether the appropriate temperature has been reached. When the appropriate temperature has been reached, return to step 23. If the temperature has not yet reached the appropriate temperature, proceed to step 34. In step 34, it is determined whether the current temperature has become equal to the set temperature. When they become equal, the process moves to step 35, where the appropriate temperature notifying means 8, that is, the sounding body 13, notifies the arrival of the appropriate temperature and latches that the appropriate temperature has been reached. Therefore, unless the settings are updated, the appropriate temperature notification will
It is only done once. This latch is released at step 25, that is, when the select switch 12 is pressed and the set temperature is updated. To notify the arrival of the appropriate temperature, apply a rectangular wave signal to the transistor 18,
This is done by driving the sounding body 13. The notification will be made for a few seconds,
After notification, return to step 23. If the current temperature has not reached the set temperature in step 34,
In step 36, a process is performed to blink the light emitting diode corresponding to the current temperature, and then the process returns to step 23.
The series of operations is completed below. Next, the temperature of the base of the iron, the select switch 12, and the sounding body 13.
FIG. 5 shows the mutual relationship between the display device 19 and the display device 19. In Figure 5, period T ₁ is set to 200°C and the base temperature rises, and period T ₂ is set to ``off'' and the base temperature falls while the temperature is controlled at 200°C. During period _T3 , the temperature is set at 160°C, the base temperature drops, and the temperature is controlled at 160°C. During period _T1 , the light emitting diode 19d indicating that the temperature has been set to 200° C. is lit continuously. The current temperature display shows that the base temperature is rising and the current temperature is
Light emitting diode 1 until reaching 150℃ (time t ₁ )
9a flashes. Furthermore, the temperature of the base increases,
When the temperature of the base reaches 150° C., at t ₁ the light emitting diode 19a goes out and the light emitting diode 19b flashes. The temperature further increases and the base temperature reaches 170
When the temperature reaches _t2 , the light emitting diode 19b goes out and the light emitting diode 19c blinks. Next, the current temperature will blink until it reaches the set temperature of 200℃.
At t ₃ , the light emitting diode 19c blinks. t ₃ when the base temperature reaches the set temperature of 200℃,
The blinking of the light emitting diode 19c that had been displaying the current temperature goes out, and only the light emitting diode 19d displaying the set temperature of 200° C. lights up continuously, so that it can be determined that the temperature of the base has reached the appropriate temperature. Also, at this time, the light emitter 13 sounds for a short time to notify the appropriate temperature. time
From _t3 to _t4 , the temperature of the heating element 5 is controlled at 200°C, and the light emitting diode 19d corresponding to 200°C continues to be lit. Next, at time _t4 , press the select switch 12 to change the set temperature from 200°C to "off". At this time, only the light emitting diode 19a corresponding to "off" is lit, and the current temperature is not displayed by blinking the light emitting diode. Also, at time t ₅ , select switch 1
When 2 is pressed and the set temperature is changed from "off" to 160°C, the light emitting diode 19b corresponding to 160°C lights up. Then, the temperature of the base decreases, and the light emitting diode 19d blinks until the temperature of the base reaches 190℃, and the temperature of the base reaches 190℃.
When reaching t ₄ , the light emitting diode 19d goes out and the light emitting diode 19c starts blinking. The base temperature drops further below 190℃ and the set temperature
The light emitting diode 19c continues to blink until the _temperature reaches 160℃, and when the temperature reaches 160℃, the light emitting diode 1
The blinking of 9c goes out, and only the light emitting diode 19b corresponding to 160° C. is lit. Further, when the _temperature reaches 160° C., the appropriate temperature notification is performed by the sounding body 13. This example can be summarized as follows.

[Table] However, the current temperature display one level before the set temperature is
The current temperature is displayed until the set temperature is reached. Effects of the Invention As described above, the iron of the present invention uses a plurality of display elements in common to display the set temperature display and the current temperature display using different operating modes of lighting and flashing, so that the iron can be easily set. In addition to being able to display the temperature, you can also check the temperature of the iron base at any time, making it easy to see whether the set temperature has been reached or not. Therefore, it is possible to eliminate the problem of incorrect use in which the temperature of the cloth is too high or too low. Additionally, the display element allows you to confirm that the base temperature has reached the set temperature, making the iron extremely easy to use.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the relationship between each part of an iron showing an embodiment of the present invention, Fig. 2 is a partially cutaway side view showing the configuration of the iron, Fig. 3 is an electric circuit diagram of the iron, FIG. 4 is a diagram showing the flow of the operating procedure of the iron, and FIG. 5 is an explanatory diagram regarding the set temperature display, current temperature display, and appropriate temperature notification. 1... Operating means, 2... Set temperature display means, 3
... Temperature control means, 4 ... Power control means, 5 ...
Heating element, 6... Temperature detection element, 7... Current temperature display means, 19... Display device.

Claims (1)

[Claims] 1. A heating element that heats the base of the iron, an operating means that switches and operates the set temperature of the base,
a temperature detection element that detects the temperature of the base; a temperature control unit that compares the current temperature of the base detected by the temperature detection element with a set temperature set by the operating unit and outputs the result; and the temperature control unit. A power control means for controlling power so that the current temperature of the base becomes the temperature set by the operating means according to the output of the means, and a display device for displaying the set temperature by the operating means and the current temperature by the temperature detection element, the display device comprising: The device has a set temperature display means and a current temperature display means that share a plurality of display elements to display the temperature, and the set temperature is displayed by lighting or blinking one of the display elements corresponding to the set temperature. The current temperature display is displayed by blinking or lighting other display elements corresponding to the base temperature in the opposite direction to the set temperature display, and when the base temperature reaches the set temperature, two display elements, the current temperature display and the set temperature display, are displayed. An iron configured so that only one display, the set temperature, is displayed.