JPH0354677Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a metal thermos flask with a heater, in which a vacuum section is formed between an inner container and an outer container, and a heater is attached to the inner container.

(Prior Art) As shown in FIG. 3, a conventional metal thermos with a heater has a heater 14 installed in the vacuum section at the bottom of the inner container 13, and a heater 14 that is connected to the outside from a car cigarette lighter or the like via a plug receiver 15. The heater 14 was made to generate heat by a power source, and the hot water in the inner container 13 was heated and kept warm.

(Problem to be solved by the invention) However, according to the above structure, when there is no external power source such as a car cigarette lighter outdoors, heat can only be kept by the vacuum structure, so hot boiling water can be kept hot for a long time at any time. It was difficult to make instant foods and delicious drinks.

(Means for Solving the Problems) The present invention has been made to solve the above problems, and includes forming a vacuum section between the inner container and the outer container, and attaching a heater to the inner container. , a plug receiver for an external power source connected to the heater is provided outside the outer container, and a small power source is provided that applies voltage to the heater only when the power plug of the connection cord is removed from the plug receiver for the external power source. It is something.

(Function) With this configuration, hot boiling water can be obtained at any time for a long time even outdoors or in a state where there is no external power source from a car cigarette lighter or the like.

(Example) An example of the present invention will be described below with reference to the drawings.

Figure 1 is a sectional view of one embodiment of the present invention;
The figure is also a circuit diagram.

In the figure, 1 is an inner container, and 2 is an outer container that covers the outside of the inner container 1. The inner container 1 and the outer container 2 are made of metal, and a vacuum section is formed in the space between the containers 1 and 2. . A heater 5 is attached to the bottom of the inner container 1 to heat the contents 4 stored in the inner container 1. Reference numeral 6 denotes a lead wire which is led out to the outside through an outlet section 7 provided at the bottom of the outer container 2 and is used to supply electricity to the heater 5. Reference numeral 8 denotes a small power source such as a capacitor or dry battery provided at the bottom of the outer container 2, and 9 is a plug receiver for an external power source provided at the bottom of the outer container 2 and connected to the heater 5. The external power supply plug receiver 9 has terminals 9A, 9B, and 9C,
When the external power plug 10 is inserted, a voltage is applied to the terminals 9A and 9C, the heater 5 is energized, and the contacts between the terminals 9B and 9C are opened. Also, when the power plug 10 is removed,
The contacts between terminals 9C and 9B are configured to short-circuit.

The two lead wires 6 of the heater 5 are connected to the terminals 9A and 9C of the external power plug receiver 9, respectively, and the small power source 8 has one end connected to the terminal 9B of the external power plug receiver 9 and the other end connected to the terminal 9A. Connected. 1
Reference numeral 1 is a connection cord for connecting to an external power source such as a car generator or battery, and one end has a plug holder 9 for an external power source and a removable terminal 10.
The power plug 10 has a power plug A, 10B,
The other end has a C plug 12 that can be connected to a cigarette lighter socket in a car or the like.

Although not shown in FIGS. 1 and 2, in the actual device, the circuit of the heater 5 is equipped with safety considerations such as a conventionally known power switch or thermoswitch for dry firing.

Next, the operation of the present invention will be described.

First, store the contents 4 such as boiling water in the inner container 1, insert the C plug 12 into the cigarette lighter socket of a car, etc., and insert the power plug 1 into the external power plug receiver 9.
If you connect 0 respectively, the external power plug holder 9
The contacts of terminals 9B and 9C are open, and the contacts of terminals 9A and 9
Since a voltage is applied only to C, the heater 5 is energized by the external power supply, and the contents 4 are heated by the heat generated by the heater 5.

Furthermore, when the power plug 10 is removed from the external power plug holder 9, the contacts of the terminals 9B and 9C of the external power plug holder 9 are short-circuited, and the heater 5 generates heat when the heater 5 is energized from the small power source 8. , the contents 4 will be heated.

(Effects of the invention) As described above, according to the invention, it is possible to heat and keep warm using an external power source, and to heat and keep warm using a small power source even when there is no external power source, such as outdoors. Regardless of whether it is present or not, hot boiling water can be obtained at any time for a long time, instant foods and delicious drinks can be easily made, and it is very convenient to carry, so it can be expected to have extremely great effects. Moreover, if a solar cell or the like is used instead of a small power source, heating and keeping warm can be performed outdoors without any time limit, making it even more effective.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a metal thermos flask with a heater according to an embodiment of the present invention, Fig. 2 is a circuit diagram of the same thermos flask,
FIG. 3 is a sectional view of a conventional metal thermos flask with a heater. 1... Inner container, 2... Outer container, 5... Heater, 8...
Small power supply, 9...Plug holder for external power supply, 10...Power plug, 11...Connection cord.

Claims (1)

[Scope of utility model registration request] A vacuum section is formed between the inner container 1 and the outer container 2, a heater 5 is attached to the inner container 1, and an external power plug receiver 9 connected to the heater 5 is provided outside the outer container 2, and , External power supply plug receiver 9
This metal thermos flask with a heater is equipped with a small power source 8 that applies voltage to the heater 5 only when a power plug 10 of a connecting cord 11 is removed from the heater.