JP2006223571A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing machine which operates without consuming power unnecessarily for the on/off control of an illumination apparatus. <P>SOLUTION: The drum type washing machine having a door 9 for opening and closing a laundry article entrance 6 at a front surface part 1a and having the illumination apparatus 34 within a drum 20 is provided with a capacitor 54 at a DC power source part 50a which rectifies an AC power source 51 to DC. The capacitor 54 stores in the case of supplying power, and charge is kept when supplying no power. Between the capacitor 54 and an LED 34a of the illumination apparatus 34, a contact 72 of a door switch 45 to be turned on/off linked with opening/closing of the door 9 is provided. Even when supplying no power, the door switch 45 is turned on by only opening the door 9, and a conducting path of the capacitor 54 and the LED 34a is conducted, so that light is emitted from the LED 34a toward the drum. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a drum type washing machine having an illumination device that illuminates the inside of a drum.

Conventionally, this type of drum type washing machine elastically supports a water tank that can store water in an outer box, and a drum for storing laundry is provided in the water tank so as to be rotatable by a motor mounted on the rear surface of the water tank. It is assumed that it is configured.

The front of the outer box has a laundry entrance and a see-through window that allows the inside of the drum to be seen through, and is provided with a door for opening and closing the laundry entrance. Further, an illuminating device for illuminating the inside of the drum is provided at an upper portion of the bellows connecting the laundry entrance and the front of the water tank. With this lighting device, the visibility inside the drum can be improved, and the user can easily visually recognize the state of laundry in the drum, the state of rotation of the drum, and the like (for example, Patent Documents). 1
reference. ).

However, in a drum-type washing machine having such a lighting device, the lighting device is turned on / off in accordance with an instruction from a control circuit based on input of a lighting switch on the operation panel or detection of a door switch that is interlocked with opening / closing of the door. All of the operations are performed while power is supplied to the control circuit.
JP 2000-157781 A (6th page, FIG. 1)

As described above, in the drum type washing machine having the conventional illumination device shown in Patent Document 1,
Since the lighting device is turned on and off while power is being supplied to the control circuit, the control circuit always waits in a state of being energized, and thus consumes unnecessary power.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a drum-type washing machine that can be operated without consuming unnecessary power for on / off control of an illumination device.

In order to achieve the above object, a drum-type washing machine according to the present invention includes an outer box having a front door for opening and closing a laundry doorway, a water tank elastically supported inside the outer box, and an interior of the water tank. A drum that is provided and is rotated and accommodates laundry, an illumination device that irradiates light in the drum, and a DC voltage obtained by converting an AC power source for rotating the drum is stored. Power storage means that is turned on and off in conjunction with opening and closing of the door, a door switch that opens and closes an energization path between the power storage means and the lighting device, and the rotation drive of the drum according to an operation switch from an operation panel and the door Control means for controlling the lighting device, and the DC voltage stored in the power storage means when the AC power is supplied via the door switch that conducts when the door is opened when the AC power is not supplied. in front By supplying power to the lighting device, and a light is irradiated to the inner drum from the lighting device.

According to the drum type washing machine of the present invention, by providing the power storage means, it is possible to illuminate the lighting device by opening and closing the door even when power is not supplied, and therefore, it is possible to prevent the consumption of excess power. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

A first embodiment of a drum type washing machine according to the present invention will be described with reference to FIGS.

First, FIG. 1 shows a perspective view of a drum type washing machine. FIG. 2 is a cross-sectional view of the main part viewed from the right side of the drum type washing machine. FIG. 3 is an enlarged view of the operation panel of the drum type washing machine. FIG. 4 is a block diagram showing a configuration of electric control of the drum type washing machine. FIG. 5 is an attachment diagram of the door switch. FIG. 6 shows an assembly drawing of the lighting device.

As shown in FIGS. 1 and 2, the outer box 1 of the drum-type washing machine has a rectangular plate shape with a base plate 2 for supporting the water tank 3 at the lower part. Legs 5 are provided at the bottom of the four corners of the base plate 2.

A work port 6 is formed on the back surface of the outer box 1, and a back plate 7 is detachably attached to the work port 6. Further, a circular laundry entrance 8 is formed at the center of the front face 1a, and a door 9 that can be opened and closed is attached to the laundry entrance 8.

Further, on the front face 1a, a power switch 10a and a lighting device switch 10b (see FIG. 3),
An operation panel 10 having switches for setting each stroke time such as “washing”, “rinsing” and “dehydration” and various course settings is arranged, and a microcomputer or the like is provided in the outer box 1 behind the operation panel 10. The control apparatus 11 which consists of is accommodated.

As shown in FIG. 4, the control device 11 receives an operation signal from the power switch 10a, the lighting switch 10b, etc. of the operation panel 10 and a detection signal from the door switch 45. The water supply valve 47, the drain valve 35, and the lighting device 34 are controlled. The inside of the control device 11 is constituted by an illumination device microcomputer 71 and the like which will be described later.

And the water tank 3 in the outer case 1 forms the drum shape which has the opening part 3a in the front, and the outer case 1
Are supported elastically laterally via a pair of left and right suspensions 12 (only one is shown in FIG. 2). The support form is a shape having a downward slope (lower right in FIG. 2) from the opening 3 a of the water tank 3 toward the bottom of the water tank 3.

A reinforcing plate 13 is attached to the rear end surface portion (the right end surface portion in FIG. 2) of the closed bottom surface of the water tank 3, and the reinforcing plate 13 and the central portion of the rear end surface portion of the water tank 3 are Rotating shaft bearing 1
A bearing housing 16 in which 4 and 15 are housed is attached. The bearing housing 1
6, a stator 18 of the motor 17 is attached to the back of the bottom of the water tank 3. As the motor 17, an outer rotor type motor 17 having a rotor 19 outside the stator 18 is used.

In addition, a drum 20 having a predetermined gap (a little smaller in diameter) is disposed inside the water tank 3. A thicker drum support 21 made of metal, for example, is attached to the rear end surface of the closed bottom surface of the drum 20. A drum shaft 22 attached to the center of the bottom of the rear end surface of the drum support 21 and the drum 20 is inserted into the bearings 14 and 15 of the bearing housing 16 from the center of the bottom of the water tank 3. The rear end portion of the drum shaft 22 protruding from the bearing housing 16 is attached to the rotor 19 of the motor 17. Thereby, the drum 20 is rotatably supported by the water tank 3 with the same inclination as the water tank 3.

The drum 20 is provided with dewatering holes 23 in almost the entire region of the drum (only a part is shown in FIG. 2), and baffles 24 are attached to several locations on the inner periphery of the drum. (Only a part is shown in FIG. 2). In addition, a drain port 35 is provided at the lowest side of the water tank 3. The drain port 35 is attached to a drain valve 36, and a drain valve motor 37 that opens and closes the drain valve 36 is attached to the outer bottom surface of the water tank 3. A drain hose 38 is connected to the tip of the drain valve 36.

A water tank cover 25 made of a heat-resistant rigid material such as a metal such as an iron plate or a stainless steel plate or glass is attached to the periphery of the opening 3 a of the water tank 3.
5 has a ring shape with an opening at the center. An illuminating device 34 described later is provided on the upper part of the water tank cover 25, and the illuminating device 34 has a function of illuminating the inside of the drum 20.

On the other hand, a drum cover 26 is attached to the front surface of the drum 20 with respect to the water tank cover 25. The drum cover 26 is attached to the peripheral edge of the open front surface of the drum 20, has a ring shape having a laundry inlet 27 at the center, and is made of a heat-resistant material.

The laundry entrance 8 and the water tank cover 25 of the front surface portion 1a are connected in a watertight manner by a bellows 28. The bellows 28 has flexibility capable of coping with vibration from the drum 20 and the water tank 3 and is excellent in chemical resistance such as a detergent solution (for example, ethylene.
Propylene-based synthetic rubber) is generally cylindrical and has a bellows portion at an intermediate portion to prevent water leakage outside the water tank 3.

An openable / closable door 9 is attached to the laundry doorway 8 connected to the bellows 28.

As shown in FIG. 1, the door 9 has a circular shape that matches the shape of the laundry doorway 8, for example, and is rotated forward by a hinge 29 attached to the outer box 1. The material entrance 8 is opened and closed.

Further, a see-through window 30 having the same size as the laundry entrance 8 is provided at the center of the door 9. As shown in FIG. 2, the transparent window 30 includes a front glass 31 and a door 9 on the front surface of the door 9, for example.
A rear glass 32 having a shape that swells in a truncated cone shape is provided on the rear surface.

The door 9 is provided with a door lock portion 41, and a door lock portion 42 is disposed on the front surface 1 a of the outer box 1 corresponding to the door lock portion 41. When the door 9 is closed, the laundry doorway 8 is closed by fitting the door lock portion hole 41 a to the door lock portion 42. Further, a door lock release device 43 is provided on the front surface 1 a of the outer box 1, and when the door lock release device 43 is pushed, the door lock device 40 is released and the door 9
Is configured to open.

And on this door lock part 42 side, as shown in FIG.
For example, a door switch 45 including a limit switch is provided.

The door switch 45 includes a movable member 45a and a spring 45 attached to the movable member 45a.
b is provided. The door switch 45 is turned on / off by the movement of the movable member 45a in the left-right direction.

For example, when the door lock part hole 41a of the door lock part 41 is fitted to the door lock part 42 as shown in FIG. 5A, the door lock part 41 is in the back direction (FIG. 5A). The movable member 45a is pushed in the right direction. The door switch 45 is pushed by the movement of the movable member 45a, and the door switch 45 detects the closing of the door 9.

Conversely, when the door lock part hole 41a of the door lock part 41 is released from the door lock part 42 as shown in FIG. 5B, the door lock part 41 is moved forward (FIG. 5B ), The movable member 45a is pushed leftward by the bias of the spring 45b. The door switch 45 detects the opening of the door 9 by the movement of the movable member 45a.

As described above, the door switch 45 detects the opening and closing of the door 9 when the movable member 45a is displaced by fitting / releasing the door lock portion hole 41a of the door lock portion 41 with the door lock portion 42. ing. In addition, the door switch 45 and a contact 72 of the lighting device circuit 70 described later are interlocked.

In addition, a water inlet 46 for guiding tap water or the like into the water tank 3 by a hose or the like (not shown) is provided behind the upper surface of the outer box 1, and is connected to a water supply valve 47.

And it connects to the detergent case 48a from the water inlet 46 via the water supply valve 47 and the water supply pipe 47a. The detergent case 48a accommodates the detergent introduced from the detergent inlet 48 provided on the front face 1a.

Next, the detergent case 48 a is connected to a flexible water supply hose 49 and connected to a water supply port 49 a formed on the upper rear side of the water tank 3.

  Here, the configuration / operation of the lighting device provided in the water tank cover 25 will be described.

As shown in FIG. 6, an attachment port 25 c that is long in the circumferential direction of the aquarium cover 25 is formed at a predetermined position on the top of the aquarium cover 25, and the lighting device 34 connects the attachment port 25 c to the aquarium cover 2.
It is attached and fixed by a screw 34b so as to be closed from the outside of 5.

At the time of mounting and fixing, a rectangular frame-shaped sealing packing 34 c is interposed between the peripheral edge of the lighting device 34 and the water tank cover 25, so that water leakage from the mounting port 25 c of the lighting device 34 is prevented. ing. The screw 34 is provided on the outer peripheral surface of the mounting opening 25c.
A plurality of boss portions 25c1 for screwing b are formed to protrude.

The lighting device 34 includes a rectangular lighting device body 34d and a transparent resin cover member 34e attached to the front surface of the lighting device body 34d by, for example, screwing. The lighting device body 34d has a recess 34d1 formed in a concave shape.
A substrate 34a1 provided with three LEDs 34a is arranged in the storage portion 34d1.

The cover member 34e has a rectangular shape corresponding to the shape of the lighting device main body 34d, and a protrusion 34e1 is formed in a portion corresponding to the storage portion 34d1 and enters the water tank cover 25. Yes.

And three LED34a on the board | substrate 34a1 arrange | positioned in the accommodating part 34d1 is the protrusion 3
The light irradiated inside 4e1 takes the structure located in the drum 20 so that it may have a diagonal directing direction.

With these configurations, the lighting device 34 has three LEDs 34 arranged along the circumference of the water tank cover 25.
The interior of the drum 20 is illuminated. Further, in the lighting device main body 34d,
A power cord 34 f for supplying power to the LED 34 a is drawn from the control device 11.

  An electric circuit related to the lighting device configured as described above will be described.

  FIG. 7 is a diagram showing a circuit configuration of the drum type washing machine of the present embodiment.

The electric circuit according to the present embodiment mainly includes a power supply circuit 50 and a lighting device circuit 70 connected to the power supply circuit 50.

The power supply circuit 50 includes a power supply 51 that is mainly an AC power supply unit, a bridge diode 52, and D
A DC power supply unit 50a such as a C-DC converter 53 and a capacitor 54 (for example, an electric double layer capacitor) serving as a power storage unit is used.

The power source 51 is a commercial power source for 100 V, and is connected to a bridge diode 52 that is a rectifier circuit. The bridge diode 52 is connected to smoothing capacitors 55 and 56 (for example, an aluminum electric field capacitor) for smoothing the rectified voltage, and the two smoothing capacitors 55 and 56 are connected in series. The AC input terminal 52 a of the rectifying bridge diode 52 is connected between the low potential side of the smoothing capacitor 55 and the high potential side of the smoothing capacitor 56.

A DC-DC converter 53 is connected in parallel to the smoothing capacitors 55 and 56, and the low potential side of the capacitor 56 is connected to the ground. This DC-DC
The converter 53 divides the voltage into predetermined 15V and 5V output voltage circuits.

A smoothing capacitor 58 is connected to the 15V output voltage line 57 of the DC-DC converter 53.
Are connected in parallel, and the high-potential-side terminal 58a of the smoothing capacitor 58 is connected to the relay internal coil 74b of the lighting device circuit 70.

Further, a 5V output voltage line 59 of the DC-DC converter 53 is connected to a capacitor 60 respectively.
, 54 are connected in parallel, and terminals 60a, 54 are connected to the high potential side of each capacitor.
a is connected to the terminals of the lighting device microcomputer 71 and the relay 74 of the lighting device circuit 70.

A diode 61 is connected between the high potential sides of the capacitors 60 and 54 so that the electric charge stored in the capacitor 54 is not discharged elsewhere.

On the other hand, the lighting device circuit 70 is a lighting device microcomputer 7 provided in the control device 11.
1, a contact 72 linked to the door switch 45, an illumination device 34 having three LEDs 34 a, a relay 74, various transistors, and the like.

  Next, the operation of FIG. 7 will be described.

First, the illumination device microcomputer 71 that controls various illumination operations includes a power supply circuit 50.
The voltage 5V is supplied from the terminal 60a.

In addition, a voltage 5V is supplied to the terminal 54a of the relay 74 from the terminal 54a of the power supply circuit 50, and the terminal 54a is connected to the relay contact 74a. Further, the voltage 15V is supplied from the terminal 58a of the power supply circuit 50 to the terminal 58a of the relay 74, and the terminal 58a.
Is connected to the relay internal coil 74b.

Between the terminal 54a and the contact 74a of the relay 74, the closed state (ON) is maintained in a state where no external force is applied due to its own elasticity, and when the relay internal coil 74b is excited, it is connected to the ground side terminal. It will be in an open state (off).

The relay internal coil 74b is connected to the lighting device microcomputer 71 via a transistor 75 whose emitter is grounded.

On the other hand, the relay contact 74a is connected to the lighting device 34 via a contact 72, a resistor, and the like.

The contact 72 is interlocked with the door switch 45 of the door 9. When the door 9 is open, the door switch 45 detects the open state, and the contact 72 is closed (ON). Conversely, when the door 9 is in the closed state, the door switch 45 detects the closed state, and the contact 72 operates to be in the open state (off).

A transistor 77 is connected to the output terminal 76 of the contact 72 as a collector, and a voltage of 5 V is applied to the emitter of the transistor 77 from the terminal 60 a of the power supply circuit 50. Further, the base of the transistor 77 is connected to the lighting device microcomputer 71.

Therefore, while the drum type washing machine is connected to the commercial power supply 51, the capacitor 54 is charged with a voltage necessary for the lighting device 34. For example, when the door 9 is opened when washing is completed, the door switch 45 is opened. The state is detected, and the contact 72 is closed (ON). As a result, the 5V voltage of the output voltage line 59 is supplied to the lighting device 3 via the terminal 54a, the relay 74, the contact 72, and the like.
4 is applied to the LED 34a, and light is irradiated from the hand in the drum 20 toward the depth.

When the illumination switch 10b is pressed, the illumination device microcomputer 71 operates the transistor 77, and the 5V voltage of the output voltage line 57 is applied from the terminal 60a to the LED 34a of the illumination device 34 via the transistor 77, and the drum Light is irradiated from the hand in 20 toward the depth.

Next, operations and effects of the drum type washing machine having the above configuration will be described with reference to FIGS. 8 shows a flowchart of the illumination operation by the illumination switch, FIG. 9 shows a flowchart of the illumination operation by the door switch, and FIG. 10 shows a flowchart of the illumination operation by the door switch when the power is off.

First, as a well-known washing function, a “washing”, “rinsing”, and “dehydration” process is automatically executed as is well known.

First, the door 9 is opened, and laundry (not shown) is put into the drum 20 through the laundry entrance 8 and the laundry insertion port 27. Then, a necessary detergent is put into the detergent case 48 a from the detergent inlet 48.

When the door 9 is closed, the operation conditions are set by operating the operation panel 10 and the operation is started, the operation is started based on the program stored in advance in the illumination device microcomputer 71 of the control device 11, and “wash”, “ The steps of “rinse” and “dehydration” are sequentially performed.

When the “washing” process is started, a predetermined amount of water enters the aquarium 3 as a washing liquid containing detergent through the water inlet 46, the water supply valve 47, the water supply valve 47a, the detergent case 48a, the flexible water supply hose 49, and the water supply port 49a. The drum 20 is supplied to the motor 17 with the drain valve 36 closed.
Thus, for example, they are alternately rotated in both forward and reverse directions at a low speed of 50 to 60 [rpm]. Aquarium 3
The water level inside is controlled by a water level sensor (not shown).

As a result, both the laundry is sequentially swirled by the baffle 24 of the drum 20 and stirred for washing. Then, after a predetermined time, the drain valve motor 37 is energized and driven by an electric signal from the control device 11, and the drain valve 36 is opened. As a result, the dirty washing liquid accumulated in the water tank 3 is drained out of the outer box 1 through the drainage hose 38.

When the draining operation is completed, when a predetermined amount of new water is supplied into the water tank 3, the drum 20 is again rotated at a low speed by the motor 17 while supplying water. The process is performed. As a result, the laundry is stirred together with the washing water to rinse the dirt and detergent attached to the laundry.

The washing water after the “rinsing” step is discharged out of the outer box 1 from the drain hose 38 by opening the drain valve 36 in the same manner as in the washing.

When draining is completed, the drum 20 is moved by the motor 17 with the water supply valve 47 closed.
A “dehydration” step is performed by rotating in one direction at a high speed of 00 to 900 [rpm]. Thereby, the water contained in the laundry is discharged from the dewatering hole 23 by centrifugal force. The discharged water is discharged out of the outer box 1 through the drain hose 38 from the drain port 35 of the water tank 3.

  Hereinafter, the operation of the electric circuit of the drum type washing machine according to the present embodiment will be described.

First, the power supply circuit 50 charges the smoothing capacitor 55 during the positive half-cycle period of the AC power supply 51 and charges the smoothing capacitor 56 during the negative half-cycle period.

As a result, the DC-DC converter 53 connected in parallel to the smoothing capacitors 55 and 56.
Is supplied with a voltage (282V) subjected to voltage doubler rectification. This voltage (282V) is used for driving the motor 17 of the drum type washing machine.

The DC-DC converter 53 steps down the input voltage (282V) to predetermined DC voltages 15V and 5V and outputs the result. Accordingly, electric charge is stored in the capacitor 54. At this time, the diode 61 prevents other charges stored in the capacitor 54 from being discharged.

Thereby, a voltage of 5V is applied between the terminal 54a of the relay 74 of the lighting device circuit 70 and the ground. A voltage of 5V is applied between the terminal 60a of the transistor 77 and the ground. Further, a voltage of 5 V is applied from the terminal 60 a of the lighting device microcomputer 71 after being smoothed by the capacitor 80.

Thereby, the illumination device microcomputer 71 operates and various operation controls are executed based on a predetermined program.

  Here, the operation of lighting control based on the program will be described.

FIG. 8 is a flowchart of the illumination control in response to the operation of the illumination switch 10b by the illumination device microcomputer 71.

In a state where the power source 51 is turned on by the user operating the switch 10a of the operation panel 10 (
It is assumed that the illumination switch 10b is further pressed (step S1).

Then, in response to the depression of the illumination switch 10b, a voltage is applied from the illumination device microcomputer 71 to the base of the transistor 77, the transistor 77 is turned on, and the LED
34a lights up (step S3). That is, the 5V voltage from the output voltage line 57 is applied to the LED 34a of the lighting device 34 via the terminal 60a and the transistor 77, and light is irradiated from the hand in the drum 20 toward the depth.

The illumination range of the LED 34a is such that the illumination device 34 is attached to the aquarium cover 25 so that the light has a directing direction obliquely downward in the drum 20 as shown in FIG.
34a can irradiate light to the irradiation range X (the range of the hatched portion X) in the drum 20 (from the front to the depth in the drum).

When the illumination switch 10b is pressed again, no voltage is applied from the illumination device microcomputer 71 to the base of the transistor 77, the transistor 77 is turned off, and the LED 3
The energization to 4a is cut off and the LED 34a is turned off.

Thus, when the power is on, even when the door 9 is closed ("wash"
In the case of “rinse” and “dehydration”, light is emitted from the LED 34a into the drum 20 by the operation of the illumination switch 10b, so that the user can visually see the inside of the drum through the transparent window 30 from the front of the outer box 1. can do.

FIG. 9 is a flowchart of illumination control in response to turning on / off of the door switch 45 by the illumination device microcomputer 71.

When various washing operations of the drum type washing machine are finished and a certain time (for example, 10 minutes) elapses (
In step S4 Y), the power source 51 is automatically turned off (step S9).

On the other hand, before various washing operations of the drum type washing machine are finished and a predetermined time elapses (step S).
When the door 9 is opened at 4), the contact 72 is closed (ON) by the door switch 45 that detects the open state of the door 9 (Y in step S5).

At this time, since the relay contact 74a is normally closed (ON) with the terminal 54a, the voltage of 5V from the output voltage line 57 of the power supply circuit 50 thereby causes the lighting device 34 to pass through the terminal 54a, the contact 72, and the like. The LED 34a is applied, and light is emitted from the LED 34a. (Step S6)
For example, when 3 minutes have elapsed since the LED 34a was illuminated (Y in step S7), a voltage is applied from the illumination device microcomputer 71 to the base of the transistor 75, and the transistor 75 is turned on.

As a result, the voltage of 15V on the output voltage line 59 is energized from the terminal 58a to the relay internal coil 74b of the relay 74, and the relay internal coil 74b is excited. Following this excitation,
The relay contact 74a is switched to the ground side, and the relay 74 is opened (off).

Accordingly, the current supplied to the LED 34a via the terminal 54a, the contact 72, etc. of the output voltage line 59 is turned off by disconnecting the relay 74 (step S8). Then, after the LED 34a is turned off, the power supply 51 is turned off (step S9).
.

FIG. 10 is a flowchart of illumination control in response to turning on / off the door switch 45 when the power is off.

The time when the power is turned off is when the power source 51 is turned off after a lapse of a certain time as in step S4 of FIG. 9 described above, or when the user himself turns off the power source 51 by pressing the power switch 10a (step S10). ).

Accordingly, in this state, only the capacitor 54 stores the electric charge in the power supply circuit 50, and no electric charge is stored in any capacitor other than the capacitor 54, and the voltage applied to the lighting device microcomputer 71 is also eliminated.

In this state, when the user opens the door 9 (Y in Step S11), the door 9 is opened, and the door switch 45 is also opened. Accordingly, the contact 72 interlocked with the door switch 45.
Is closed (ON).

Thereby, the voltage of 5V from the capacitor 54 is applied to the LED 34a via the terminal 54a, the relay contact 74a, the contact 72, etc., and the LED 34a is energized. Thereby, the LED 34a emits light toward the drum 20 (step S12).

Further, when the door switch 45 is kept closed (on) (the door 9 is open), the electric charge stored in the capacitor 54 disappears as time passes, so that no current is supplied to the LED 34a, and the LED 34a is turned off. .

Here, since an electric double layer capacitor is used as the capacitor 54, a large charge capacity can be maintained. For example, a voltage can be applied to the LED 34a for a long time as compared with an aluminum electric field capacitor, and light is emitted from the LED 34a for a long time. can do.

Further, when the door 9 is closed and the door switch 45 is closed during irradiation of light from the LED 34a (Y in step S13), the contact 72 is opened (off), and the terminal 54 of the capacitor 54 is opened.
a is disconnected from the LED 34a, and the LED 34a is turned off (step S14).

Thus, even when the power supply 51 is turned off by providing the electric double layer capacitor 54, when taking out the laundry, the door 9 can be opened to irradiate light from the LED 34a toward the drum 20, The product is convenient for the user.

Further, when the power supply 51 is turned on, the electric double layer capacitor 54 is charged. As described above, according to this embodiment, it is possible to use power economically without requiring extra standby power for driving the LED 34a when the power is turned off.

BRIEF DESCRIPTION OF THE DRAWINGS The whole perspective view of 1st Embodiment of the drum type washing machine which concerns on this invention. The principal part sectional view seen from the right side of the drum type washing machine concerning a 1st embodiment. The enlarged view of the operation panel of the drum type washing machine which concerns on 1st Embodiment. Electrical configuration diagram of the drum type washing machine according to the first embodiment The attachment figure of the door switch of the drum type washing machine which concerns on 1st Embodiment. The assembly drawing of the illuminating device of the drum type washing machine which concerns on 1st Embodiment. The electric circuit block diagram of the drum type washing machine which concerns on 1st Embodiment. The flowchart of the 1st illumination control of the drum type washing machine which concerns on 1st Embodiment. The flowchart of the 2nd illumination control of the drum type washing machine which concerns on 1st Embodiment. The flowchart of the 3rd lighting control of the drum type washing machine concerning a 1st embodiment.

Explanation of symbols

1 outer box, 1a front part, 2 base plate, 3 water tank, 3a opening, 5 legs, 6 work port, 7
Back plate, 8 laundry doorway, 9 doors, 10 operation panel, 10a power switch, 10b
Illumination device switch, 11 control device, 12 suspension, 13 reinforcing plate, 14 bearing, 15 bearing, 16 bearing housing, 17 motor, 18 stator, 19 rotor, 20 drum, 21 drum support, 22 drum shaft, 23 dewatering hole 24 Baffle 25 Water tank cover 26 Drum cover 27 Laundry inlet 28 Bellow 2
9 Hinge, 30 Perspective section, 31 Front glass, 32 Rear glass, 35 Drain port, 36
Drain valve, 37 Drain valve motor, 38 Drain hose, 40 Door lock device, 41 Door lock part, 41a Door lock part hole 41a, 42 Door lock part, 43 Door lock release device, 45 Door switch, 45a Movable member, 45b Spring, 46 Water inlet, 47
Water supply valve, 47a Water supply pipe, 48 Detergent inlet, 48a Detergent case, 49 Flexible water supply hose, 49a Water supply port, 50 Power supply circuit, 50a DC power supply, 51 Power supply, 52
Bridge diode, 52a AC input terminal, 53 DC-DC converter, 54 capacitor, 54a terminal, 55 smoothing capacitor, 56 smoothing capacitor, 57 output voltage line, 58 smoothing capacitor, 58a terminal, 59 output voltage line, 60 capacitor, 60a terminal , 61 diode, 70 lighting device circuit, 71 lighting device microcomputer, 72 contacts, 74 relay, 74a relay contact, 74b relay internal coil, 75 transistor, 76 terminal, 77 transistor, 80 capacitor,

Claims (4)

An outer box having a front door for opening and closing the laundry doorway;
A water tank elastically supported inside the outer box;
A drum which is provided inside the aquarium and accommodates laundry and is driven to rotate;
An illumination device for irradiating light into the drum;
Power storage means for accumulating a DC voltage obtained by converting an AC power source for rotationally driving the drum;
A door switch that is turned on and off in conjunction with opening and closing of the door, and that opens and closes an energization path between the power storage means and the lighting device;
Control means for controlling the rotation of the drum and the lighting device according to an operation switch from an operation panel;
By supplying power to the lighting device through the door switch that is conducted when the door is opened when the AC power is not supplied, the lighting device stores the DC voltage stored in the power storage means. The drum-type washing machine is characterized in that light is irradiated into the drum. After a predetermined time has elapsed since the DC voltage is started to be supplied to the lighting device by opening the door, the power supply line between the power storage unit and the lighting device is shut off by the control of the control unit,
The drum type washing machine according to claim 1, wherein the lighting device is turned off. When the operation switch for operating on / off of the lighting device is pressed while the door is closed, the DC voltage is supplied to or cut off from the lighting device by the control of the control means, thereby controlling the on / off of the lighting device. The drum type washing machine according to claim 1, wherein: The drum type washing machine according to claim 1 or 2, wherein the power storage means is an electric double layer capacitor.

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