JPS61280897A - Iron - Google Patents

Abstract

(57) [Summary] 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 an iron that allows checking whether the iron is at a usable temperature and knowing the current temperature.

BACKGROUND OF THE INVENTION Most conventional irons display temperature by connecting lamps to both ends of the heater, and the lamps are turned on only when the heater is 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 use an iron base or use a lamp. All I could do was see how the temperature control works from turning on to turning off, or from turning off to turning on. Furthermore, since there is currently no heat indicator when ironing clothes, people often do not know if the temperature is too high or too low for the fabric.

The present invention eliminates the above-mentioned drawbacks of conventional irons, and provides an iron that not only displays the set temperature but also displays the current temperature of the base surface of the iron. It is.

Means for Solving the Problems The present invention provides an iron in which the current temperature display means has a current temperature switching point that is different from the set temperatures of the plurality of stages of the set temperature display means, and the current temperature reaches the set temperature. The current temperature display in the foreground continues to display the current temperature until it reaches the set temperature.

Operation By having the above configuration, the current temperature is displayed in the same manner when the temperature is rising toward the set temperature and when it is falling toward the set temperature, thereby making it possible to recognize the current temperature without error.

Example Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In Fig. 1, 1 is an operating means for setting the temperature of the base surface of the iron, 2 is a set temperature display means for displaying the set temperature based on the output of the operating means 1, and 3 is the υ base based on the output of a temperature sensing element to be described later. 4 is a power control means driven by the temperature control means 3; 6 is a heating element that heats the base surface while the power supply is controlled by the power control means 4; 6 is a base; A temperature sensing element that detects the temperature of the surface, 7 is a current temperature display means that displays the current temperature based on the output of the temperature sensing element 6, and 8 is a base of the iron that indicates the output of the temperature sensing element 6 and the output of the operating means 1. This is an appropriate temperature notification means that detects and notifies whether the surface temperature has reached the appropriate temperature.

Next, in FIG. 2, 9 is the iron body, 10 is the base of the iron, 11 is a control device, 12 is a select switch for selecting the base temperature, and 13 is 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, an example of the configuration of the control device 11 is shown in FIG.

14 is a microcomputer, CPU, and ROM.

It is a one-chip microcomputer consisting of RAM, input/output board, etc. 15 is an A/D converter, and temperature detection element 6
The microcomputer 14 converts the signal into a binary code.
is connected to the input port of. Reference numeral 16 denotes a transistor for driving the power control means 4. The base terminal of the transistor 16 is connected to the output port of the 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, The structure is such that the sounding body 13 is driven. Reference numeral 19 denotes a common display device constituting the display portion of the set temperature display means 2 and the current temperature display means 7;
The light-emitting diodes 19a to 19d constitute the light-emitting diodes 19a to 19d.

In the embodiment of FIG. 3, four light emitting diodes 19a to 19 are used.
d constitutes the display device 19, but there is of course no problem with four or less or four or more display elements, and display elements other than light emitting diodes may also be used. The select switch 12 is connected to one of the input ports of the microcomputer 14,
By pressing the select switch 12, the temperature settings of the microcomputer 14 are sequentially changed.

2o is a DC power supply that is supplied to the entire control device 11.

Next, the display function of the display device 19 will be explained.

3, the light emitting diode 19a of the display device 19 in FIG. 3 is used to display "off" which does not supply any current to the heating element 6, 19b is used to display the temperature setting to set the base surface temperature of the iron to, for example, 160°C, and similarly 19c is used to display the temperature setting to set the base surface temperature of the iron to 160°C. 180°C219d 200
'C' set temperature display. The set temperature is displayed by lighting each light emitting diode. For example, if you set the base surface of the iron to 20o''C,
Only the light emitting diode 19d is in a continuous lighting state. Furthermore, the display device 19 also displays the current temperature of the base surface of the iron. That is, the current temperature display means 7 has a current temperature switching point different from the set temperature of the set temperature display means 2. In this example, the light emitting diode 19a has a base surface temperature of 150'C.
Flashes when less than When the base surface temperature of the light emitting diode 19b is 150°C or more and less than 170°C, the light emitting diode 19b
C blinks when the temperature is above 170°C and below 19o'C, and 19d blinks when the temperature is above 190°C.The current temperature can be grasped by checking the position of the blinking light emitting diode. When the set temperature is reached, only the corresponding light emitting diode is turned on. Therefore, the set temperature is indicated by a lit light emitting diode, the current temperature of the base surface is indicated by a blinking light emitting diode, and reaching the set temperature is indicated by the lighting of only the corresponding light emitting diode. Next, a series of operations of the iron configured as described above will be explained using FIG. 4.

21 is a power-on step υ. When the power is turned on, first, in step 22, the display device 19 displays a setting of "off". In step 23, select switch 1
Check whether 2 was pressed. Select switch 12
If the button is pressed, the process moves to step 24 to update the settings. If it is set to ``first 1 - first'', pressing Sereno 1 and switch 12 once will change the angle to 160°.
It will be set to C, and if you press it again it will be set to 180″C.
This is repeated, and when the select switch 12 is pressed when the setting is 200'C, the setting is updated to "off" again. Step 25 is a process of releasing the latch of 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. Step 2
Step 6 determines 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, 160°C
If the temperature is set to 180°C, the light emitting diode 19b will be turned on, and if the temperature is set to 180°C, the light emitting diode 1 will be turned on.
Turn on 9c. In step 28, the temperature of the base of the iron is determined.

The temperature signal from the temperature detection element 6 is converted into a binary code by the A/D converter 16 and read, and the current temperature of the base is determined. 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 3o, and the transistor 16 is driven to make the power control means 4 conductive. Therefore, power is supplied to the heating element 6 from the AC power source 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 power control means 4, in which the driving of the transistor 16 is stopped, is brought into a non-conductive state. Therefore, power is no longer supplied to the heating element 5. If step 26 is omitted and the setting is "off", the process goes to step 32, lights up the light emitting diode 19a corresponding to "off", and then goes to step 31, where the heating element 6 is turned on.
Turn off the power to the 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, the process returns to step 23. If the temperature has not yet reached the appropriate temperature, the process moves 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 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 will be
It is only done once. This latch is released in step 26.
That is, this is performed 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 is made for several seconds, and after the notification, the process returns 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. 6 shows the mutual relationship between the base temperature of the iron, the select switch 12, the sounding body 13, and the display device 19.

In FIG. 5, the period T1 is set at 200°C and the base temperature rises, and the period during which the temperature is controlled at 200"C,
The period T2 is set to "off" and the base temperature is falling, and the period T3 is 1eo? This is a period in which the temperature is set at 1eo'C, the base temperature drops, and the temperature is controlled at 1eo'C.

During period T1, the light emitting diode 19d is lit to indicate that the temperature has been set to 200°C. The current temperature is displayed by blinking the light emitting diode 19a until the base temperature rises and the current temperature reaches 150'C (time 11).

When the base temperature further increases and reaches 160°C (11), the light emitting diode 19a goes out.
The light emitting diode 19b blinks. The temperature rises further,
When the base temperature reaches 170°C (ti), the light emitting diode 19b goes out and the light emitting diode 19c blinks. Next, the flashing display of the current temperature is 20″C, which is the set temperature.
The light emitting diode 19C blinks until the time reaches (t3). That is, the current temperature is displayed one step before the current seismic intensity reaches the set temperature until the current temperature reaches the set temperature. Base temperature is set temperature 200″C
(t3), the light emitting diode 19c that had been displaying the current temperature stops blinking and the set temperature is 200°C.
Only the display light emitting diode 19d lights up continuously, and it can be determined that the base temperature has reached the appropriate temperature. Also, at this time, the sounding body 13 makes a short sound to notify the appropriate temperature. From time t3 to time 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, the select switch 12 is pressed 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. If the select switch 12 is pressed at time t5 and the set temperature is changed to 160"C, then the light emitting diode 19b corresponding to 160"C lights up.

Then, the base temperature decreases and the light emitting diode 19d blinks until the base temperature reaches 190'C, and when the base temperature reaches 190''C (t6), the light emitting diode 19d loses points and the light emitting diode 19c stops blinking. The base temperature further decreases from 190°C until the set temperature reaches 160°C (t7).
(+ blinks, and when the temperature reaches 16o'C, the light-emitting diode 19c stops blinking, and only the light-emitting diode 19b corresponding to 160°C lights up.
When the temperature is reached (t7), the J sounding body 13 notifies the appropriate temperature.

The above example can be summarized as follows.

However, the current temperature display one level before the set rough hide continues to display the current temperature until the set temperature is reached.

Note that in the present invention, the display switching points for the set temperature and the current temperature are different, and the reason for this is as follows.

Now, if the current temperature display on the base surface is made the same as the set temperature display level, that is, the set temperature display is 160'C.
218o'C92oO°C2 Current temperature display ~1 eo'
c (19a), 1 so'c ~ 180°C (19b
) 180°C to 200°C (19c), there are the following problems. Let us consider a case where the set temperature is 200''C and the temperature gradually increases toward the - set temperature.

To explain with reference to FIG. 5, since the setting is 200°C, the light emitting diode 19d set at 200°C lights up.

Current temperature display is ~160°C: 19a flashing, 16c°C
~180℃=19b blinking, 18σC~2oO℃:
190 blinks, and when it reaches 2QO°C, the current temperature display stops and only the 200°C light emitting diode 19d lights up continuously.

Next, set the temperature to 160'C and the temperature will rise to 200'C.The current temperature display is 200'C to 180'C: 19d blinking, 1 so'C to 160'C: 19G blinking.

When the temperature reaches 160°C, only the light emitting diode 19b is lit continuously.

Therefore, the current temperature display will differ depending on whether the temperature is rising or falling.

In the above example, when climbing 1eo'c ~ '180''C is 19b
The temperature will flash at 19c when descending, and the temperature will flash at 160°C to 180°C. Also, when rising from 180°C to 200°C, 19
C flashing, 19d at 180°C to 200°C when descending
will flash.

That is, when the light emitting diode 19c blinks and displays the current temperature, the current temperature at this time is 1eo"C~1
Is it between 80″C or 180″C to 200°C?
I don't know if it's in between.

On the other hand, in the present invention, in the example of FIG. 6, when the light emitting diode 19c blinks to display the current temperature, the current temperature becomes 1-ro'c to 190°C when the temperature rises. However, since the set temperature is set at 200°C at this time, the current temperature one position before the set temperature is displayed until the set temperature is reached. Therefore, the current temperature is 170
The width is from 200'C to 200'C.

When the temperature drops, it is 190'C to 170C, but since the set temperature is set to 160C at this time, the current temperature is 190C to 160C.

That is, in the example of FIG. 5, the light emitting diode 19C
When flashing, the current temperature is 170'C to 200"C (when rising)
, 190'C to 160°C (when descending), and the common temperature range is 170°C to 190°C, so there is no difference between rising and descending times.

In addition, in the present invention, when the set temperature is higher than 200'C, when the set temperature is lower than 160°C, or when the range of the set temperature is further narrowed and the set temperature is increased, the current temperature is displayed as the temperature rises. When descending, the number of matching areas increases.

Effects of the Invention The iron of the present invention allows the base temperature of the iron to be checked at any time, and is very effective in using the iron.
The set temperature and the current temperature switching point are different, and the current temperature is displayed one step before the current temperature reaches the set temperature, and the current temperature is displayed until the set temperature is reached.
The display is the same when the temperature is rising to the set temperature and when it is falling, making it possible to accurately recognize the current temperature and providing an extremely user-friendly iron.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the relationship between 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, and 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, T...Current temperature display means. Name of agent: Patent attorney Toshio Nakao and 1 other person @1
Fake figure 2r! A 3 Figure 147 Kukunondo 5-/Figure 4

Claims (1)

[Claims] A heating element for heating the base of the iron, an operating means for setting the temperature of the base, a temperature detection element for detecting the temperature of the base, and a temperature control means for maintaining the temperature of the base at the set temperature by the output of the temperature detection element. , a power control means for controlling energization of the heating element by the output of the temperature control means, a set temperature display means for displaying the set temperature by the output of the operating means, and a current temperature displayed by the output of the temperature detection element. and a current temperature display means, the set temperature display means has a plurality of set temperatures, and the current temperature display means has a current temperature switching point different from the set temperature, and the current temperature reaches the set temperature. An iron configured to display the current temperature until the previous temperature reaches the set temperature.