JPH0263040B2 - - 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. Prior Art In most conventional irons, the temperature was displayed by connecting a lamp to both ends of the heater, and the lamp was turned on only when the heater was energized. Problems to be Solved by the Invention With the above configuration, the user has no idea when the temperature will reach the appropriate temperature, and even when the temperature has reached the appropriate temperature, the only way to know is to actually touch the iron base or turn on the lamp. All I could do was see how the temperature control worked, from turning off to turning on, or from turning off to turning on. Also, when ironing, there is no display of the current temperature, so the temperature may be too high for the fabric.
Or, I often didn't realize that it was too low. The present invention eliminates the above-mentioned drawbacks of conventional irons, and it not only displays the set temperature of the iron base, but also displays the current temperature of the iron base using multiple display elements. The present invention provides an iron in which the temperature can be shared and displayed, and in particular, the current temperature can be recognized without fail. Means for Solving the Problems The iron of the present invention includes a heating element that heats the base of the iron, an operation means that switches and operates 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. a temperature control means for comparing the current temperature of the base detected by the sensing element with a set temperature set by the operating means and outputting the result; and a display device that displays the set temperature by the operating device and the current temperature by the temperature sensing element, and the display device shares the plurality of display elements to display the temperature. It has a set temperature display means and a current temperature display means, and the set temperature display is displayed by lighting or blinking one of the display elements corresponding to the set temperature, and the current temperature display is displayed by lighting or blinking one of the display elements corresponding to the set temperature. The display element flashes or lights up in sequence in the opposite direction to the set temperature display, and when the base temperature reaches the set temperature, the current temperature display changes from two displays, the set temperature display, to one display, only the set temperature display. configured,
In addition, the switching point of the current temperature display of each display element by the current temperature display means is set at the middle of each set temperature, and the current temperature display one point before the current temperature reaches the set temperature is changed to the current temperature until the current temperature reaches the set temperature. The configuration is such that display is performed. Operation With the above configuration, the set temperature and current temperature can be displayed using a shared display element, and
The current temperature display is the same when rising towards the set temperature and when falling towards the set temperature, making it possible to recognize the current temperature without error. Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In Fig. 1, reference numeral 1 indicates operating means for switching the set temperature of the base of the iron, 2 indicates set temperature display means for displaying the set temperature based on the output of the operating means 1, and 3 indicates the temperature of the base detected by a temperature detection element to be described later. Temperature control means 4 compares the current temperature with the set temperature set by the operating means 1 and outputs the result; 4 controls the current temperature of the base to become the set temperature by the operating means 1 according to the output of the temperature control means 3; 5 is a heating element that heats the base while the power supply is controlled by the power control means 4 of the iron; 6 is a temperature detection element that detects the temperature of the base; 7 is a temperature detection element 6; Current temperature display means 8 displays the current temperature based on the output, and 8 is an appropriate temperature alarm that detects and notifies whether the temperature of the base of the iron has reached the appropriate temperature from the output of the temperature detection element 6 and the output of the operating means 1. It is a means. 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 temperature of 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 supply, and when the transistor 16 is driven, the power control means 4 becomes conductive, and power is supplied from the AC power supply 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 a square wave signal of an audible frequency is applied from the microcomputer 14 to the base terminal of the transistor 18, sound is generated. The body 13 is configured to be 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 four light emitting diodes 19a to 19d are used, it is of course possible to use four or fewer or four or more light emitting diodes, and display elements other than light emitting diodes may also be used.
The set temperature is displayed by lighting or flashing one of these 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. and when the temperature of the base reaches the set temperature, only one display of the set temperature is displayed from the two displays of the current temperature display and the set temperature display, and each display by the current temperature display means The switching point for displaying the current temperature of the element is set in the middle of each set temperature, and the current temperature display one step before the current temperature reaches the set temperature continues to display the current temperature until the set temperature is reached. A select switch 12 is connected to one of the input ports of the microcomputer 14, and by pressing the select switch 12, the microcomputer 14
The temperature settings are changed sequentially to display the above-mentioned display. A DC power supply 20 is a power supply that 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 temperature of the base of the light emitting diode 19a is
When the temperature is below 150℃, it flashes in the opposite direction to the set temperature display. The temperature of the base of the light emitting diode 19b is 150
When the temperature is above 170°C and below 170°C, 19c blinks until the set temperature reaches 170°C or above, 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 power is turned on in step 21, step 22
At this point, the display device 19 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. When the select switch 12 is pressed again, the setting is updated to "off". 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. i.e. 160℃
If the temperature is set to 180°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 A/D converter 15 converts the temperature signal from the temperature detection element 6 into a binary code and reads it to determine 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, power is supplied to the heating element 5 from the AC power supply 17, and the temperature of the base increases. 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 rendered non-conductive. Therefore, power is no longer supplied to the heating element 5. When "off" is set in step 26, the process moves to step 32, lights up the light emitting diode 19a corresponding to "off", and then proceeds to step 31.
Then, 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 are equal, the process moves to step 35, and the appropriate temperature notification means 8, that is, the sounding body 13 is activated.
, it notifies you that the appropriate temperature has been reached, and latches that the appropriate temperature has been reached. Therefore, unless the settings are updated, the appropriate temperature notification is performed only once. This latch is released at step 25, that is, when the select switch 12 is pressed and the set temperature is updated. The notification of reaching the appropriate temperature is performed by applying a rectangular wave signal to the transistor 18 and driving the sounding body 13. The notification will be made for several seconds, and after the notification, the process will return to step 23. If the current temperature has not reached the set temperature in step 34, the process returns to step 23 after flashing the light emitting diode corresponding to the current temperature in step 36. This completes the series of operations. Next, FIG. 5 shows the relationship between the temperature of the base of the iron, the select switch 12, the sound and light body 13, and the display device 19. In Figure 5, period T ₁ is set to 200℃ and the base temperature rises, and period T ₂ is set to ``off'' and the base temperature decreases while the temperature is controlled at 200℃. Period _T3 is a period in which the temperature is set to 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 sounding body 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 ₆ , 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. The above 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. In addition, in the embodiment of the present invention, the switching point of the current temperature display is set in the middle of each set temperature, and the current temperature display that is one step before the current temperature reaches the set temperature does not display the current temperature until it reaches the set temperature. The reason why this is done will be explained with reference to FIGS. 6 and 7. In order to make the gist of the present invention easier to understand, FIG. 6 shows an example in which seven light emitting diodes a to g are provided, and FIGS. 6A and 6B correspond to each other. In particular, as can be understood from FIG. 6B, the set temperature displays of the light emitting diodes a to g are set to "off" to 200 DEG C., respectively. and,
In the present invention, where the switching point of the current temperature display is set at the middle of each set temperature, when the set temperature is set to 200°C as shown in FIG. 6A, the current temperature display of each light emitting diode is It is displayed by sequentially blinking at the temperature indicated by the arrow in Figure A. In other words, the light emitting diode is
111-130℃, d is 131-150℃, e is 151-170℃,
The same is true when the set temperature is set to 80°C as shown in . That is, the light emitting diode g at 200-191℃, f at 190-171℃, and e at 170-151℃.
However, d flashes between 150 and 131 degrees Celsius, and c flashes between 130 and 80 degrees Celsius. Here, especially the light emitting diodes e, d
As is clear from Figure 6A, the LEDs blink at exactly the same temperature when the temperature rises and falls, and the other light emitting diodes c and f also blink at almost the same temperature when the temperature rises and falls. become. Therefore, the user can accurately recognize the current temperature based on the blinking light emitting diode. Note that when the current temperature display and each set temperature display are matched, the result is as shown in FIG. 7. In other words, when the set temperature is set to 200℃ as shown in ', light-emitting diode g lights up continuously and light-emitting diode a lights up at 80℃.
Flashes up to ℃, b up to 120℃, c up to 140℃
Until... On the other hand, like ′80
When set to ℃, light emitting diode b lights up and flashes when g reaches 180 degrees Celsius, f up to 160 degrees Celsius, and so on. In this case, the current temperature display of the light emitting diodes c to e when the temperature is rising and that of the light emitting diode when the temperature is falling is different by one rank even if the same light emitting diode is blinking. Effects of the Invention As is clear from the above explanation, the iron of the present invention is very advantageous in using the iron because the set temperature and the current temperature of the iron base can be confirmed on a common display element, and the current temperature display switching point is set to the middle of each set temperature, and the current temperature display one step before the current temperature reaches the set temperature is configured to display the current temperature until it reaches the set temperature, so the temperature will be displayed as it rises and falls toward the set temperature. The time display is the same, the current temperature can be accurately recognized, and an iron that is extremely easy to use can be provided.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the relationship between various parts 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, Figure 4 shows the flow of the operating procedure of the iron, Figure 5 is an explanatory diagram of the set temperature display, current temperature display, and appropriate temperature notification, and Figure 6 makes the relationship between the set temperature display and current temperature display easier to understand. The illustrated diagram, FIG. 7, is an explanatory diagram for comparison. 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. The display is configured to display only one set temperature display, and the switching point of the current temperature display of each display element by the current temperature display means is set at an intermediate point between each set temperature, so that the current temperature becomes the set temperature. The iron is configured to display the current temperature one step before reaching the set temperature until it reaches the set temperature.