JP2001292909A - Electric hot water storage container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To structure a liquid quantity display part simply and inexpensively, and especially, so that a liquid level is easy to see. SOLUTION: This electric hot water storage container comprises a liquid quantity display tube connected to a hot water storage container in a container body and disposed in accordance with a liquid quantity display window of the container body, and a light emitting part for illuminating a liquid level region in the liquid quantity display tube from under the liquid quantity display tube. The structure lightens the overall interior of the liquid quantity display tube, and causes the irradiated light to be reflectively refracted by the liquid level region to thus display the liquid level region itself in high contrast. The simple and inexpensive structure can display the liquid level in an easy-to-see and clear way.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric hot water storage container provided with a liquid amount display section.

[0002]

2. Description of the Related Art In recent hot water storage containers, a transparent liquid amount display window extending vertically is provided on the front side of an outer case of the container body.

On the other hand, inside the liquid amount display window, a transparent tube portion, which is located between the front wall of the hot water storage container in the main body and is a part of a liquid discharge passage communicating with the hot water storage container, is provided in a vertical direction. The liquid level (remaining liquid amount in the hot water storage container) of the transparent tube portion can be seen from the outside through the liquid amount display window.

However, the liquid level portion of the transparent tube portion has a low difference in light and darkness (contrast), and it is usually not always easy to determine the boundary between the liquid portion and the non-liquid portion.

Therefore, recently, a water level in a hot water storage container can be detected by providing an electrostatic water level detecting electrode in the liquid amount display tube portion, while a display means such as a light emitting diode or a liquid crystal is driven. The liquid level is displayed on the display.

[0006]

However, in the case of using the display means such as the light emitting diode and the liquid crystal, a water level sensor is indispensable, and the structure of the display section is complicated, and the cost is high.

[0007]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problems, and in order to achieve the object, for example, the invention is provided with the following means for solving the problems. Have been.

(1) The invention of claim 1 That is, first, the electric hot water storage container of the invention of claim 1 of the present application
A liquid amount display tube communicating with the hot water storage container in the container body and provided corresponding to the liquid amount display window of the container body, and illuminating a liquid surface portion in the liquid amount display tube from below the liquid amount display tube. A light emitting unit is provided.

According to such a configuration, the entire liquid level display tube becomes bright, and the light irradiated on the liquid surface portion is reflected and refracted, so that the liquid surface portion itself is displayed with good contrast. With a low-cost configuration, the liquid level is easy to see and can be displayed clearly.

(2) Invention of Claim 2 Next, the electric hot water storage container of the present invention according to the second aspect of the present invention is the electric hot water storage container of the first aspect of the present invention, wherein the liquid amount indicating pipe is provided on a rear side thereof. Is provided.

Thus, in the configuration of the electric hot water storage container according to the first aspect of the present invention, when a predetermined color surface is provided on the back side of the liquid amount display tube, the entire liquid portion up to the liquid level is in contrast. Good and bright display is performed in a predetermined color, so that the display is more legible and beautiful.

(3) Invention of Claim 3 Next, the electric hot water storage container of the invention of claim 3 of the present application has the same configuration as the electric hot water storage container of the invention of claim 1, further comprising a liquid level sensor. When the liquid level sensor detects that the amount of hot water stored in the hot water storage container has dropped to the water supply level,
It is characterized in that it is configured to illuminate the liquid surface in a different irradiation mode than before.

According to such a configuration, when the liquid level is reduced to a level at which water supply is required and the state is detected by the liquid level sensor, for example, the continuous light irradiation state is changed to intermittent irradiation. As a result, the irradiation is performed in a different irradiation state, such as a state, so that the user can be reliably notified that the hot water in the hot water storage container has dropped below the water supply level.

(4) Invention of Claim 4 Next, the electric hot water storage container of the present invention according to a fourth aspect of the present invention is the electric hot water storage container according to the first aspect of the present invention, wherein the light emitting portion has a plurality of colors of light. Is arbitrarily selected to emit light.

According to such a configuration, in the configuration of the electric hot water storage container according to the first aspect of the present invention, the entire liquid portion up to the liquid level of the liquid amount display tube has good contrast, and a desired arbitrarily selected desired portion is provided. The display is brighter by the color light, making the display easier to see and more beautiful.

(5) Invention of Claim 5 Next, the electric hot water storage container of the invention according to the fifth aspect of the present invention has the same structure as the electric hot water storage container according to the first, second or fourth aspect of the present invention, except that a liquid level sensor is provided. When the liquid level sensor detects that the amount of hot water stored in the hot water storage container has dropped to the water supply level, the liquid level is illuminated with light of a different color from before. And

According to such a configuration, the liquid level decreases to a level at which water supply is required, and when that state is detected by the liquid level sensor, for example, the light of a predetermined color selected up to that time is emitted. The liquid state is illuminated by switching from the irradiation state to the irradiation state of light of another color, and the user is surely notified by the color change that the hot water in the hot water storage tank has dropped below the water supply level. Will be able to

(6) Invention of Claim 6 Next, the electric hot water storage container of the invention according to the sixth aspect of the present invention is the electric hot water storage container according to the first, second, third, fourth or fifth aspect of the present invention. The amount indicating tube is characterized by being constituted by utilizing a vertical portion of the liquid discharge passage.

In the electric hot water storage container according to the present invention, the liquid amount indicating tube can be arranged separately from the liquid discharging passage, but is also configured as the liquid discharging passage as described above. Then, the structure is simplified without taking up extra space.

(7) An electric hot water storage container according to a seventh aspect of the present invention is the electric hot water storage container according to the sixth aspect of the present invention, wherein the light emitting portion is a liquid discharge passage. Is formed in a unit structure having two sets of connection ports with the upper and lower ends of the liquid discharge passage so that the lower part can be arbitrarily interposed between the lower portions of the vertical portions.

According to such a configuration, the light emitting portion can be easily installed by improving the structure of the lower portion of the vertical portion of the conventional liquid discharge passage.

[0022]

As a result, according to the electric hot water storage container of the present invention, the display state of the liquid amount display section is extremely easy to see and the design is beautiful without increasing the cost and with a very simple configuration. can do.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIGS.
First, the configuration of the entire electric hot water storage container provided with the liquid amount display unit according to the first embodiment of the present invention and the configuration of main parts are shown.

First, as shown in FIGS. 1 and 2, for example, an electric hot water storage container according to the present embodiment is provided with a synthetic resin shoulder 3 on an upper portion of a metal outer case 2, and A container body 1 containing a stainless steel inner container (hot water storage container) 4, a lid 5 for covering the upper part of the container body 1, an air pump 6 provided in the lid 5, A series of liquid discharge passages 7 extending from the bottom to the discharge guide 15 is provided. In the present embodiment, the inner peripheral surface of the inner container 4 is coated with a fluororesin.

The inner container 4 has a bottomed cylindrical shape, and a flange 4a formed at the upper end thereof is attached to the shoulder 3
Is supported in the outer case 2 by being suspended on the inner peripheral edge 3a of the outer case 2. A bottom member 8 made of a synthetic resin is in contact with the lower end of the outer case 2, and the bottom member 8 and the inner container 4 are connected via a connection fitting 9. Thereby, the outer case 2, the inner container 4, and the bottom member 8 are integrated with each other. The lower opening 8 a of the bottom member 8 is closed by a bottom cover 10.
In the case of the present embodiment, a heater 12 is in contact with the bottom side surface of the inner container 4. The heater 12 functions as a boiling heater for boiling water.

The lid 5 is pivotally supported via a hinge pin P on a partially open type bearing 11 integrally formed on the rear portion of the shoulder 3 so as to be openable and closable and detachable. That is, the lid 5 is opened and closed with the hinge pin P as a fulcrum, and the hinge pin P is
It can be removed by detaching it from.
On the other hand, a lock device 13 for holding the closed state of the lid 5 is provided on the free end side of the lid 5.

Next, the liquid discharge passage 7 passes from the bottom 4b of the inner container 4 to the front of the inner container 4 and passes through the shoulder 3
Is formed as a series of passages of the pipe cover 14 covering the lower part of the beak portion 3b facing the pouring guide 15, and a tip side outlet 16 of the pipe cover 14 has a gap open to the atmosphere in the pouring guide 15. It is tightened.

The outlet pipe 7a of the liquid discharge passage 7
(That is, the lower part of the outlet pipe 7a)
A falling water stop valve 17 is provided, and receives the own weight or the outflow pressure of the outflow liquid when the hot water storage container falls over, so that the falling water stop valve 1 is provided.
7 is closed to prevent the liquid from flowing out through the liquid discharge passage 7 to the outside.

Further, in the middle of the liquid discharge passage 7 (that is,
A vertical portion located in front of the inner container 4) is a liquid amount display tube 71.
The liquid level WL of the liquid in the inner container 4 which is in communication with the inner tube 4 from below through the siphon principle by the transparent tube by the transparent tube as shown in FIG. ) A vertically long transparent liquid level display window 1 provided at the center
8, so that it can be easily seen from the outside (details will be described later).

The air pump 6 has a bellows-like bellows 22 interposed between a bellows lower plate 20 and a bellows upper plate 21 which also serve as a bottom plate of the lid body 5. 21 and the lid 5
The pressurizing operation of the pump pressing plate 23 exposed on the upper surface generates pressurized air in the bellows 22 which expands and contracts. Reference numeral 24 denotes a return spring for extending and returning the bellows 22.

On the lower surface of the bellows lower plate 20, a metal inner lid 25 for covering the upper opening of the inner container 4 when the lid 5 is closed is fitted from below and attached by screws 26. A seal packing 27 is provided on the outer peripheral edge of the inner lid 25 to abut on the flange portion 4a of the inner container 4 when the lid 5 is closed to maintain an airtight state.

The inner container 4 is provided between the bellows lower plate 20 and the inner lid 25 by a passage constituting member 28 which is fixedly fastened to the bellows lower plate 20 by the screws 26.
A part of a steam discharge passage 29 for discharging steam generated inside the air pump 6 to the outside without passing through the air pump 6 is formed. The steam discharge passage 29 is provided with the passage constituent member 28.
A first passage 29a formed between the inner lid 25 and the inner lid 25;
A second passage 29b formed between the passage member 28 and the bellows lower plate 20; and a third passage 29c extending upward in the lid 5 from the rear outlet side of the second passage 29b. I have. Then, the first and second passages 29
a and 29b constitute a part of an air blowing passage for blowing pressurized air from the air pump 6 as described later.

By the way, the transparent tube portion of the liquid discharge passage 7 which constitutes the above-mentioned liquid amount display tube 71 and which is perpendicular to the vertical direction, emits light on the back side thereof, for example, as shown in FIGS. A color surface 32 of a predetermined color to be reflected is provided. The color surface 32 may be a printing surface, a surface formed by attaching a sheet of a predetermined color, or a panel having a predetermined color.

A reference numeral 50 denotes a rubber-made connection member for detachably connecting the downstream end 73a of the liquid guide pipe 73 from the inner container 4 side and the upstream end (lower end) 71a of the liquid amount display tube 71 to each other. The T-type cap 50 has a liquid amount display tube 71 on an upper end side, a light emitting unit 40 described later on a lower end side, and a liquid guide pipe 73 on the inner container 4 side on a right end side. Openings 51a, 51b, 51c for fitting
Is provided.

On the other hand, the liquid amount display tube 71 made of the above transparent tube
2 and 3, a light emitting unit 40 having a light emitting diode 41 as a light source is provided, and light from the light emitting diode 41 of the light emitting unit 40 is supplied to a liquid amount display tube 71. By refracting and refracting the liquid at the interface of the liquid surface portion WL, the liquid surface portion WL can be displayed with a good contrast, accurately, and in an extremely easy-to-view state. The light emitting section 40 is provided with a lower end side opening 51b of a T-shaped cap 50 for detachably connecting a downstream end 73a of the liquid guide pipe 73 from the inner container 4 side and an upstream end (lower end) 71a of the liquid amount display tube 71. The inner light-emitting diode 41 is lit and emits light when it is fitted and fixed therein via a transparent waterproof cover 42 and is supplied with power from the power supply terminals 44a and 44b of the lower fitting bracket 43.

Therefore, when the light from the light emitting diode 41 of the light emitting section 40 is irradiated on the liquid level WL of the liquid level display tube 71 and reflected and refracted at the interface, only the liquid level WL has good contrast and accuracy. , And can be displayed in an extremely easy-to-read state. Also, as a result of the entire back surface being brightened by the reflection of light on the back side color surface 32, the liquid amount scale, numerical values, characters, etc. on the surface side of the liquid amount display window 18 on the outer case 4 side are also very easy to see.

(Embodiment 2) Next, FIGS.
Shows the structure of the liquid amount display section of the electric hot water storage container according to Embodiment 2 of the present invention.

In this embodiment, a liquid level sensor 60 is provided at a position above the light emitting section 40 in the configuration of the liquid amount display section of the first embodiment, and the lighting state of the light emitting diode 41 is changed to a continuous lighting state. Switching between two types of lighting states, that is, an intermittent blinking state, can be performed. When the liquid level sensor 60 detects that the amount of hot water in the inner container has decreased to a level that requires water supply, the previous level is determined. It is characterized by changing to a continuous lighting state and switching to an intermittent blinking lighting state to urge the user to supply water.

That is, also in the configuration of this embodiment, the light emitting section 40 has the same structure as that of the first embodiment.
The light from the light emitting diode 41 is radiated upward through a transparent waterproof cover 42 as shown by an arrow, and is provided below the transparent liquid amount display tube 71 via a shaped packing 50. The surface WL is clearly illuminated and displayed.

In the liquid level sensor 60, the sensor units 63a and 63b, which are composed of, for example, a pair of electrostatic electrodes, are opposed to each other with the liquid amount display tube 71 interposed therebetween.
An arc-shaped sensor holder 61 is provided so as to be set at a position slightly higher than the lower water supply level WLs, and the pair of sensor portions 63a and 63b are supplied with power via a power distribution terminal 62 and a harness 64, Further, it is connected to input a detection signal output to the microcomputer control unit 65.

In this case, the sensor holder 61
A color surface 32 of a predetermined color is provided on the inner peripheral surface side
Are arranged side by side, and are sandwiched and fixed by a transparent plate 72 having the same arc shape. Openings 66a and 66b are provided in the panel-shaped color surface 32 corresponding to the axes of the sensors 63a and 63b facing each other.

If there is a sufficient amount of hot water in the inner container 4 and the liquid level display pipe 71 has a liquid level WL sufficiently above the water supply level WLs correspondingly, the pair The capacitance value between the sensor units 63a and 63b is low, but when the liquid level WL drops below the water supply level WLs, the capacitance value increases and the input voltage of the detection signal to the microcomputer control unit 65 increases. Rises and the amount of hot water in the inner container 4 drops below the water supply level.

Then, the microcomputer control unit 65 outputs a lighting state switching control signal to the lighting state control means 69 of the light emitting diode 41 to change the lighting state of the light emitting diode 41 from the continuous lighting state up to that time. The lighting is controlled by switching to a typical blinking lighting state.

As a result, the user can reliably know that the amount of hot water in the inner container 4 has fallen below the water supply level from the blinking operation of the liquid level lighting displayed together with the lowered liquid level level display.

The liquid level sensor 60 in the above configuration
The same purpose can be achieved by changing the sensor units 63a and 63b to, for example, an optical type (emission / reception) instead of the above-mentioned static electrode type.

(Embodiment 3) In the case of the configuration of Embodiment 2 described above, when the level sensor 60 detects that the amount of hot water in the inner container 4 has decreased to a level requiring water supply,
The light emitting diode 41 is switched from a continuous lighting state to a blinking state to notify that the amount of hot water has decreased until water supply is required.

By the way, for the same purpose, as another configuration, for example, two types of the light emitting diodes 41 are arranged in parallel and their emission colors are configured to be different from each other such as blue and red. When the amount of hot water is sufficient, the liquid level WL is lit and displayed using a blue light emitting diode. On the other hand, when the amount of hot water falls below the water supply level WLs, the red light emitting diode is turned on instead of blue and the liquid level is displayed in red. In this way, it is possible to notify that water supply is necessary.

(Embodiment 4) Next, FIG. 8 shows the structure of an electric hot water storage container according to Embodiment 4 of the present invention and the structure of a liquid amount display section thereof.

The electric hot water storage container of any of the first to third embodiments has a manual hot water supply type using an air pump 6 for discharging the liquid from the inner container 4 in any case. did. However, the liquid amount display structure which is a feature of the present invention as described above is not limited to such a manual hot water supply type. For example, as shown in FIG. The present invention can be applied to an electric hot water supply type employing the hot water supply pump 80 in the same manner.

In FIG. 8, reference numeral 73 denotes a bottom 4b in the inner container 4.
A liquid introduction pipe to the liquid suction port of the electric hot water supply pump 80 which is open at
This is an outlet pipe that leads the liquid discharged from the a side to the liquid amount display pipe (vertical portion) 71 side, which is a part of the liquid discharge passage, via the T-type packing 50. In this embodiment, unlike the electric hot water storage containers of the first to third embodiments, the heater 12 is provided on the lower surface side of the bottom 4 b of the inner container 4.

Other components of the liquid amount display tube 71 are as follows.
It is substantially the same as that of each of the above embodiments.

(Embodiment 5) Next, FIGS.
15 shows the contents of various lighting controls of an operation panel surface, a light emitting diode, and the like of the electric hot water storage container according to Embodiment 5 of the present invention.

In the case of the electric hot water supply type electric hot water storage container as in the fourth embodiment, as shown in FIG. 9, “boiling”, “descaling”, and “sleep timer 6 hours” are provided on the operation panel surface 33. , "Hour sleep timer 9 hours", "High temperature insulation 98C", "Low temperature insulation 90C", "Mahobin insulation (vacuum insulation)" and other various water heating / warming mode lighting display section 33a, hot water supply switch 33b , Hot water supply switch 33b
A hot water supply lock release switch 33c for enabling hot water supply by ON operation of the heater, a heat retention selection switch 33d for selecting the above-mentioned heat retention mode, a reboil selection switch 33e, and a lighting / light emission mode of the light emitting diode 41 (continuous / flashing / lighting out / color change etc. ) Is selected.

Each of them is connected to a predetermined microcomputer control unit, and controls water supply or abnormal temperature notification using a light emitting diode 41 as described below (FIG. 10) according to the operation setting / display state. ), Hot water supply lock release display control (flow in FIG. 11), control of turning off the night timer (flow in FIG. 12), and the like.

(1) Water supply / abnormal temperature notification control This control corresponds to steps S ₁ to S _{1 in} the flowchart of FIG.
It is performed as shown in S _8.

That is, in this control, first, in step S
_1, whether the hot water in the inner container 4 by the liquid level sensor 60 is reduced to below the level WLs in need of water, followed by the step S ₂ heater 12 parts or electric circuit portion around the above-mentioned It is sequentially determined whether or not the temperature state is an abnormal temperature equal to or higher than a predetermined temperature.

[0057] As a result, in the case of the normal state no abnormal temperature state in main water supply state of both NO, followed by proceeding to step S _3, if the current hot water temperature is below 80 ° C., or 8
0 or is ° C. or higher, that is, whether or not a kettle completion state, step S ₅ with selecting boiling mode in step S ₄ in the case of prior kettle completion of less than 80 ° C.
To turn on the heater 12 to execute the water heating.

On the other hand, when the boiling of the NO water has been completed at 80 ° C. or higher, the process proceeds to step S ₆ to select and execute the heat retention mode.

On the other hand, unlike the above case, when at least _{one of} the above steps S ₁ and S ₂ is in the state of water supply required or the abnormal temperature, the same state is determined in step S _7. The buzzer is notified and step S is performed thereafter.
_{At step 8} , the light emitting diode 41 is turned on in a blinking state, and the user is warned that the state is the same.

As a result, according to this configuration, when the amount of hot water is reduced to such an extent that water supply is required, or when the inside of the main body is in an abnormal temperature state, a buzzer is notified and a warning is issued by flashing of the light emitting diode 41. It encourages the user to call attention. As a result, safety is improved.

(2) Display Control During Hot Water Supply Lock Release This control is performed in steps S ₁ to S _{1 in} the flowchart of FIG.
It is performed as shown in S _6.

[0062] That is, first, in step S ₁ in the hot water supply unlock switch 33c is equal to or a hot water supply unlocked in being turned ON, YE is in the unlocked
When S is a light emitting diode proceeds to step S ₂ (LE
The D) 41 on continuously lit by displaying the liquid volume, the process proceeds to step S _3.

In step S ₃ , the hot water supply switch 33
b is turned on to drive the electric hot water supply pump 80 (ON)
It is determined whether or not it has been performed. As a result, when the electric hot water supply pump 80 is actually in the hot water supply state (YE
In S), the lighting state of the light emitting diode (LED) 41 is continued to display the liquid amount.

On the other hand, even if the lock release switch 33c is ON, the electric hot water supply pump 80 is not driven.
When, the process proceeds to step S _4, to determine the elapsed time 20 seconds, and 20 seconds after (YES), automatically the hot water supply unlock switch 33c proceeds to step S ₅ O
Performs automatic hot water supply lock operation in the FF, turns off the light-emitting diode (LED) 41 in step S ₆ with it impossible to drive the electric hot water pump 80.

When such a configuration is adopted, the light emitting diode (LED) 41 is only used when the lock of the hot water supply switch 33b is released and the liquid amount is actually required to be confirmed when the hot water supply operation is actually performed. Lights up and the liquid level is clearly displayed, so it lights up when not needed,
Useless power consumption is eliminated.

(3) Good Night Timer Light Off Control This control is performed in steps S ₁ to S _{1 in} the flowchart of FIG.
It is performed as shown in S _3.

That is, in this control, first, in step S
₁ above "sleep timer (6 hours or 9 hours)" is equal to or in operation, when YES (during operation) is on in which the heater 12 is turned OFF proceeds to step S _2,
The light emitting diode 41 is turned off.

As a result, according to this configuration, the light emitting diode 41 is turned off during the operation of the "good night timer" which does not require hot water supply, so that power consumption can be surely saved.

(Embodiment 6) FIG. 13 and FIG.
4 shows a configuration of an electric hot water storage container according to Embodiment 6 of the present invention.

The electric hot water storage container of this embodiment is provided with the electric hot water supply pump 80 as in the fourth or fifth embodiment, and is provided with a charging battery so that the electric hot water can be supplied even in a portable state without the AC power supply. 90, and the positive and negative power output terminals 90a, 90b of the charging battery 90 are connected to the power input terminals 81a, 81b of the electric hot water supply pump 80 via the first power wirings 91a, 91b.
The light emitting diode 41 is connected to power supply input terminals 44a and 44b similar to those of the above embodiments via a and 92b.

Therefore, in this configuration, the electric hot water supply pump 80 can be driven by the power supply voltage of the charging battery 90 without the AC power supply, and the light emitting diode 41 is also provided in the same manner as in each of the above embodiments. Can be turned on.

Further, in this case, when the power supply potential of the charging battery 90 decreases, the luminous intensity (light amount) of the light emitting diode 41 decreases and becomes darker. This can be convenient because it can also function as a display means.

The charging battery 90 in this case is
It may be of the type with a built-in main body as shown in the figure or of the exterior type.

[Brief description of the drawings]

FIG. 1 is a front view of an electric hot water storage container according to Embodiment 1 of the present invention.

FIG. 2 is a vertical sectional view of the electric hot water storage container.

FIG. 3 is a horizontal sectional view of a central portion of a liquid amount display tube of the electric hot water storage container.

FIG. 4 is an enlarged vertical sectional view of a lower part (light emitting portion) of a liquid amount display tube of the electric hot water storage container.

FIG. 5 is a top view of a T-type packing and a light emitting section of the electric hot water storage container.

FIG. 6 is an enlarged vertical sectional view of a lower part (liquid level sensor) of a liquid amount display tube of an electric hot water storage container according to Embodiment 3 of the present invention.

FIG. 7 is an enlarged horizontal sectional view of a lower part (liquid level sensor) of a liquid amount display tube of the electric hot water storage container.

FIG. 8 is a longitudinal sectional view of an electric hot water storage container according to Embodiment 4 of the present invention.

FIG. 9 is a top view of the operation panel surface of the electric hot water storage container according to Embodiment 5 of the present invention.

FIG. 10 is a flowchart showing the contents of water supply / abnormal temperature notification control by the microcomputer control unit of the electric hot water storage container.

FIG. 11 is a flowchart showing the contents of display control during unlocking of the hot water supply by the microcomputer control unit of the electric hot water storage container.

FIG. 12 is a flowchart showing the details of sleep timer extinguishing control by the microcomputer control unit of the electric hot water storage container.

FIG. 13 is a front view of an electric hot water storage container according to Embodiment 6 of the present invention.

FIG. 14 is a longitudinal sectional view of the electric hot water storage container.

[Explanation of symbols]

4 is an inner container (hot water storage container), 4b is an inner container bottom, 7 is a liquid discharge passage, 12 is a heater, 32 is a color surface, 40 is a light emitting unit, 41 is a light emitting diode, 42 is a transparent waterproof cover, 4
3 is a fitting bracket, 50 is a T-shaped packing, and 71 is a liquid amount display tube.

Claims (7)

[Claims] 1. A liquid amount display tube communicating with a hot water storage container in a container body and provided corresponding to a liquid amount display window of the container body, and a liquid amount display tube from below the liquid amount display tube. An electric hot water storage container provided with a light emitting unit for illuminating a liquid surface part. 2. The electric hot water storage container according to claim 1, wherein a predetermined color surface is provided on a back side of the liquid amount display tube. 3. A liquid level sensor that illuminates the liquid surface in a different irradiation mode when the liquid level sensor detects that the amount of hot water stored in the hot water container has dropped to the water supply level. The electric hot water storage container according to claim 1, wherein the electric hot water storage container is configured as follows. 4. The electric hot water storage container according to claim 1, wherein the light emitting section is configured to arbitrarily select and emit light of a plurality of colors. 5. A liquid level sensor, and when the liquid level sensor detects that the amount of hot water stored in the hot water storage container has dropped to the water supply level, the liquid surface portion is irradiated with light of a different color from before. The electric hot water storage container according to claim 1, wherein the electric hot water storage container is configured to illuminate. 6. The liquid amount display tube is configured by utilizing a vertical portion of a liquid discharge passage.
An electric hot water storage container according to 2, 3, 4 or 5. 7. A unit structure having two sets of connection ports with the upstream and downstream ends of the liquid discharging passage so that the light emitting portion can be arbitrarily provided between the lower portion of the vertical portion of the liquid discharging passage. The electric hot water storage container according to claim 6, which is formed.