Heater and hair care device including the same
A technology for heating devices and heating parts, which is applied in the fields of heating devices and hair care devices, and can solve problems such as large-scale device structures and large main switch sizes
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Embodiment 1
[0038] figure 1 It is a block diagram showing the structure of the heating device of Example 1 of the present invention. The heating device of Example 1 includes a power supply unit 1, a main body switch unit 2, a control unit 3, a heating unit 4, a temperature detection unit 5, and a power control switch unit 6.
[0039] The power supply unit 1 is configured with a DC power supply of preset electric power, or is configured to receive AC power, and supplies power to the entire device. The main body switch unit 2 is connected between the power supply unit 1 and the control unit 3, and switches the power supply from the power supply unit 1 to the control unit 3 by turning on / off the switch. The control unit 3 receives the supply of power from the power supply unit 1 via the main switch unit 2, and controls the switching (on / off) of the power control switch unit 6 according to the temperature of the heating unit 4, thereby controlling the supply to the heating unit 4 The drive curr...
Embodiment 2
[0048] Figure 4 It is a figure which shows the structure of the heating apparatus which comprises Example 2 of this invention. Compared with the previous device of Example 1, the heating device of Example 2 is characterized in that, in addition to the configuration for receiving AC power such as commercial power, the power supply unit 1 is also provided with a first step-down unit 7. The other structure of the second embodiment is the same as that of the previous embodiment 1. In addition, in the drawings referred to in each embodiment described below including the second embodiment, members having the same reference numerals as those referred to in the previous embodiment 1 have the same functions.
[0049] The power supply unit 1 receives a commercial AC power source, rectifies and smoothes the AC power to generate DC power, and outputs DC power in the same manner as in the previous embodiment 1.
[0050] The first step-down unit 7 is composed of, for example, a resistor R conn...
Embodiment 3
[0053] Image 6 It is a figure which shows the structure of the heating apparatus of Example 3 of this invention. Compared with the structure of the previous Example 2, the heating device of Example 3 is characterized in that a second pressure reducing portion 8 is provided. The other structure of the third embodiment is the same as that of the previous second embodiment.
[0054] The second step-down unit 8 includes: a transistor Q1 that controls the current flowing to the main body switch unit 2; resistors R4 and R5 that divide the voltage applied to the main body switch unit 2; a bias resistor R6 of the transistor Q1; The voltage divided by R4 and R5 switches the transistor Q1 to the transistor Q2.
[0055] In such a configuration, when the main body switch unit 2 is in the off state, the base current is supplied from the power supply unit 1 to the transistor Q1 via the first step-down unit 7 and the bias resistor R6. As a result, the transistor Q1 is brought into an on state,...
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