CN114641205A

CN114641205A - Thermal evaporation device and switch structure

Info

Publication number: CN114641205A
Application number: CN202080076654.6A
Authority: CN
Inventors: 东藤悠一郎; 陈捷
Original assignee: Wenzhou Oustar Electrical Industry Co ltd; Earth Chemical Co Ltd
Current assignee: Wenzhou Oustar Electrical Industry Co ltd; Earth Corp
Priority date: 2019-10-30
Filing date: 2020-10-28
Publication date: 2022-06-17
Also published as: WO2021085486A1; JPWO2021085486A1

Abstract

The thermal vaporization device (1) includes a coil heater (12) for heating the drug. The voltage from the USB power source is input from the USB jack (131). The DC/DC converter (132) stabilizes the voltage input from the USB jack (131) and supplies the stabilized voltage to the coil heater (12).

Description

Thermal evaporation device and switch structure

Technical Field

The invention relates to a thermal evaporation device and a switch structure.

Background

The following devices are known as thermal evaporation devices for exterminating harmful insects such as mosquitoes. In each device, a liquid-absorbent core, which is provided in a liquid container (e.g., a bottle) storing a medicament, is heated by a heater to diffuse the medicament into a room. In each thermal evaporation device, a PTC heater suitable for temperature control is generally used, as in PTL 1. However, when the USB power source is used, the voltage input from the USB power source cannot be well regulated, so that the heating temperature cannot be stabilized. Therefore, there is a problem that the effect or duration of the drug is unstable.

Further, for example, the following structure has been proposed as the switch structure. In this structure, the operating portion for pushing the switch is made of a material that transmits light, and the operating portion is illuminated by a light source provided on the rear surface of the operating portion, so that the operating portion looks as if it emits light by itself. However, when an LED or the like having a narrow irradiation angle is used as a light source, there is a problem that an operation portion is partially illuminated and not good.

Reference list

Patent document

[PTL 1]JP-A-2002-58414

Disclosure of Invention

Technical problem

The present invention has been completed in view of the above-mentioned circumstances. It is a first object of the present invention to provide a thermal evaporation device which uses a USB power source and is capable of stabilizing the effect or duration of a medicament. A second object of the present invention is to provide a switch structure capable of illuminating an operation portion of a switch with a good appearance.

Solution to the problem

In order to achieve the above-mentioned object, the thermal evaporation device and the switch structure according to the present invention are characterized by the following configurations [1] to [7 ].

[1] There is provided a thermal evaporation apparatus having a heater for heating a medicine, the thermal evaporation apparatus including:

a power input part to which a USB power is input; and

a stabilizing circuit which stabilizes a voltage input from the power supply input part,

wherein the voltage stabilized by the stabilizing circuit is supplied to the heater.

[2] In the thermal evaporation device according to configuration [1], the stabilization circuit includes a boost type DC/DC converter.

[3] In the thermal evaporation apparatus according to the configuration [1] or [2], the heater is constituted by a coil heater made of a nichrome wire.

[4] There is provided a switch structure comprising:

a switch;

a light source which is turned ON/OFF so as to be interlocked with ON/OFF of the switch; and

a light-transmissive operating portion provided in front of the switch and the light source and configured to perform a pressing operation on the switch,

wherein the operation section has:

a diffusion member diffusing light from the light source; and

a light-transmitting member disposed on a front surface side of the diffusion member.

[5] In the switch structure according to configuration [4], at least two light sources are provided as the light source, and the switch is provided between the at least two light sources.

According to the thermal evaporation device having the configuration [1], the stabilization circuit stabilizes the voltage inputted from the power supply input portion and then supplies the stabilized voltage to the heater. Thus, the temperature of the heater can be stabilized, and thus the effect or duration of the medicament can be stabilized.

According to the thermal evaporation device having the configuration [2], the USB power source (input voltage) can be easily stabilized by using the DC/DC converter.

According to the thermal evaporation device having the configuration [3], even by using the coil heater made of a nichrome wire whose temperature greatly fluctuates according to a change in voltage, the temperature of the heater can be stabilized. In this way, the effect or duration of the medicament can be stabilized.

According to the switch structure having the configuration [4], the operation portion of the switch is constituted by the diffusion member and the light-transmitting member. Therefore, the light of the light source is diffused by the diffusion member, so that the diffusion member uniformly emits light as a whole. Accordingly, the light-transmitting member disposed in front of the diffusion member may be visually recognized as if it uniformly emits light. Therefore, the operating portion of the switch can be illuminated with good appearance.

According to the switch structure having the configuration [5], the diffusion member can be made to emit light more uniformly by at least two light sources. Therefore, the operating portion of the switch can be illuminated with a better appearance.

Advantageous effects of the invention

According to the present invention, the heater can perform stable heating even if the USB power source is used. Thus, a thermal evaporation device capable of stabilizing the effect or duration of the medicament can be provided. Further, since a desired effect can be obtained by using the USB power source, the place of use of the thermal evaporation device is not limited. Therefore, the thermal evaporation device can be used at any place, and is user-friendly.

Further, according to the present invention, it is possible to provide a switch structure in which the operation portion of the switch can be illuminated with a good appearance.

Drawings

Fig. 1 is a schematic sectional view showing a thermal evaporation device according to a first embodiment of the present invention.

Fig. 2 is an electrical configuration diagram of a power supply circuit provided on the board shown in fig. 1.

Fig. 3 is a schematic sectional view showing a thermal evaporation apparatus in which a switch structure according to a second embodiment of the present invention is incorporated.

Fig. 4 is a front view of the plate viewed from a side of a side surface of the holding portion shown in fig. 3.

Fig. 5 is an exploded perspective view of an operation part constituting the switch structure shown in fig. 3.

Fig. 6 is a perspective view of an operation part constituting the switch structure shown in fig. 3.

Fig. 7 is a rear view of a diffusion member constituting the operation portion shown in fig. 5 and 6.

Fig. 8 is a sectional view taken along line a-a of fig. 7.

Fig. 9 is a front view of a light-transmitting member constituting the operation portion shown in fig. 5 and 6.

Fig. 10 is a sectional view taken along line B-B of fig. 9.

Detailed Description

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

(first embodiment)

First, an embodiment of the thermal evaporation device 1 according to the present invention will be described. The thermal evaporation device 1 shown in fig. 1 includes a holding portion 11, a coil heater 12, a power supply circuit 13 (fig. 2), a board 14, and a casing 15. The holding portion 11 removably holds a bottle 2 storing a medicament therein. The coil heater 12 heats the medicine. The power supply circuit 13 supplies power to the coil heater 12. A part of the power supply circuit 13 is provided on the board 14. The housing 15 accommodates the holding portion 11 and the plate 14.

The bottle 2 has a container 21 and a liquid-absorbent core 22. The container 21 stores a medicament therein. The liquid absorbent core 22 is provided so as to protrude from the inside of the container 21 to the outside of the container 21. Meanwhile, the liquid-absorbent core 22 is immersed in the medicine in the container 21.

The nichrome wire is spirally wound, thereby forming the coil heater 12. The coil heater 12 is attached to the holding portion 11. When the bottle 2 is held by the holding portion 11, the liquid-absorbent core 22 protruding toward the outside of the container 21 of the bottle 2 is inserted into the coil heater 12. When electricity is conducted to the coil heater 12, the liquid-absorbent core 22 is heated by the coil heater 12, so that the medical agent impregnated in the liquid-absorbent core 22 can be vaporized.

As shown in fig. 2, the power supply circuit 13 includes a USB socket 131 (power supply input section), a switch S1, noise removal capacitors C1 and C2, and a boost-type DC/DC converter 132. The USB power is input to the USB socket 131. The boost DC/DC converter 132 operates as a stabilizing circuit.

A USB plug (not shown) is removably provided in the USB socket 131, so that a USB power of about 5V is input between the +5V terminal and the GND terminal through the USB plug. The USB socket 131 is provided on another board (not shown) different from the board 14 on which the switch S1, the capacitors C1 and C2, and the DC/DC converter 132 are mounted. The voltage of the USB power source input to the USB socket 131 is supplied to the board 14 through the electric wire. Incidentally, a plate 14 is attached to the outside of the holding portion 11, as shown in fig. 1.

The switch S1 is provided between the DC/DC converter 132 (to be described later) and the USB power supply, thereby turning ON/OFF the supply of the DC/DC converter 132 by the USB power supply. Capacitors C1 and C2 are provided between the switch S1 and the DC/DC converter 132 to remove noise from the input voltage Vin of the DC/DC converter 132.

The voltage of the USB power source that fluctuates in the range of 4.40V to 5.25V is input to the DC/DC converter 132 as the input voltage Vin. The input voltage Vin to the DC/DC converter 132 is actually a voltage slightly dropped (typically lower than 5V) from a range of 4.40V to 5.25V due to a resistance component of a wire or a voltage drop occurring due to a resistance component of a switch S1 to be described later. The DC/DC converter 132 stabilizes the input voltage Vin and outputs a boosted output voltage Vout to the coil heater 12. The output voltage Vout is substantially constant at 5V

The DC/DC converter 132 is a well-known boost type DC/DC converter. The DC/DC converter 132 includes a coil L1, smoothing capacitors C3 and C4, a backflow prevention diode D1, and a switching portion 132 a. Coil L1 and diode D1 are connected in series between the input and the output. Smoothing capacitors C3 and C4 are connected in parallel between the output and ground.

The LX terminal of the switching section 132a is connected between the coil L1 and the diode D1. Accordingly, a not-shown switching element built in the switching portion 132a is connected between the region between the coil L1 and the diode D1 and the ground. Further, a divided voltage obtained by dividing the output voltage Vout by the resistors R2 and R3 is input to the FB terminal of the switching portion 132 a.

When a not-shown switching element of the switching portion 132a is turned ON, energy is accumulated in the coil L1. On the other hand, when the switching element is turned OFF, an induced electromotive force is generated due to the energy accumulated in the coil L1. A voltage generated by a combination of the induced electromotive force and the input voltage Vin and higher than the input voltage Vin is input to the smoothing capacitors C3 and C4. The voltage supplied to the smoothing capacitors C3 and C4 is smoothed by the smoothing capacitors C3 and C4, and then output as the output voltage Vout.

The switching portion 132a controls an ON/OFF duty ratio of a not-shown switching element so that a voltage input to the FB terminal of the switching portion 132a can be constant at a predetermined set value. Therefore, the stabilized and boosted output voltage Vout is output from the DC/DC capacitor 132. In this embodiment, the set value is set to a value by which the output voltage Vout is constant at 5V.

According to the embodiment, the DC/DC converter 132 stabilizes the voltage of the USB power supply input from the USB socket 131, and the stabilized voltage is supplied to the coil heater 12. Therefore, the temperature of the coil heater 12 can be stabilized, so that the effect or duration of the medicine can be stabilized.

Further, according to the embodiment, the step-up type DC/DC converter 132 is used. Therefore, by using this DC/DC converter 132, the voltage of the USB power supply can be easily stabilized.

Further, according to the embodiment, the coil heater 12 is made of nichrome wire. Therefore, even if the coil heater 12 made of a nichrome wire whose temperature greatly fluctuates according to a change in voltage is used, the temperature of the coil heater 12 can be stabilized. Thus, the effect or duration of the medicament can be stabilized.

Incidentally, a boosting type DC/DC converter 132 is used here in order to stabilize the voltage. However, a stabilizing circuit using a step-down type DC/DC converter or a series regulator may be used instead as long as the voltage can be stabilized.

(second embodiment)

Next, the thermal evaporation device 3 in which the switching structure 33 is incorporated according to an embodiment of the present invention will be described. The thermal evaporation device 3 shown in fig. 3 includes a holding portion 31, a coil heater 32, a switch structure 33, a plate 34, and a casing 35. The holding portion 31 removably holds the bottle 4 in which the medicament is stored. The coil heater 32 is used to heat the medicament. The switching structure 33 is used to turn ON/OFF the power to the coil heater 32. The electronic components constituting the switch structure 33 are mounted on the board 34. The housing 35 accommodates the holding portion 31 and the plate 34.

The bottle 4 has a container 41 and a liquid-absorbent core 42. The container 41 stores a medicament therein. The liquid-absorbent core 42 is provided so as to protrude from the inside of the container 41 toward the outside of the container 41. Meanwhile, the liquid-absorbent core 42 is immersed in the medicament in the container 41.

The nichrome wire is spirally wound, thereby forming the coil heater 32. The coil heater 32 is attached to the holding portion 31. When the bottle 4 is held by the holding portion 31, the liquid absorbent core 42 protruding toward the outside of the container 41 of the bottle 4 is inserted into the coil heater 32. When electricity is conducted to the coil heater 32, the liquid-absorbent core 42 is heated by the coil heater 32, so that the medical agent impregnated in the liquid-absorbent core 42 can be vaporized.

The switch structure 33 has a push switch 36, a pair of LEDs (light sources) 37 and 37, and a light-transmissive operating portion 38. The pair of

LEDs

37 and 37 are turned ON/OFF so as to be interlocked with ON/OFF of the push switch 36. The light-transmissive operating portion 38 is provided in front of the push switch 36 and the LED 37, and is configured to perform a pushing operation on the push switch 36.

A push switch 36 and a pair of

LEDs

37 and 37 are provided on a board 34 attached to the outside of the holding portion 31. As shown in fig. 4, a push button 36a is provided at the center of the push switch 36, and when the push button 36a is pressed, the push switch 36 is turned ON/OFF. The pair of (i.e., two)

LEDs

37 and 37 are arranged side by side in the up-down direction, and the push switch 36 is arranged between the two

LEDs

37 and 37.

As shown in fig. 3, the operating portion 38 is held in the housing 35 so as to be contactable with and separable from the push switch 36. As shown in fig. 5 and 6, the operating portion 38 has a diffusion member 39 and a light-transmitting member 40. The diffusion member 39 diffuses the light from the

LEDs

37 and 37. The light-transmitting member 40 is disposed on the front surface side of the diffusion member 39.

As shown in fig. 5 to 8, the diffusion member 39 made of white polypropylene or the like diffuses light incident thereon from the

LEDs

37 and 37, so that the diffusion member 39 can be visually recognized as if it emits light as a whole. The diffusion member 39 has a bottom wall 39a, a protrusion 39b, a pair of

positioning ribs

39c and 39c, and a pair of

attachment portions

39d and 39 d. The bottom wall 39a is parallel to the plate 34. The protrusion 39b protrudes from the center of the bottom wall 39a toward the light-transmitting member 40 side (front surface side).

The bottom wall 39a is provided in a shape similar to an ellipse in the up-down direction in a front view. A diffusion groove 39a-1 extending in the up-down direction is provided on the rear surface side of the bottom wall 39 a. In addition, a through hole 39a-2 is provided at the center of the bottom wall 39 a. The through hole 39a-2 is provided in a shape similar to an ellipse in the up-down direction in a front view. Further, a recess 39a-3 (which is shaped like a circle in a front view) is provided at the center of the bottom wall 39a so that the button 36 can be fitted into the recess 39 a-3. The projection 39b has a circumferential wall 39b-1 and an upper wall 39 b-2. The circumferential wall 39b-1 is provided upright so as to extend forward from the circumferential edge of the through hole 39a-2 of the bottom wall 39 a. The edge portion of the upper wall 39b-2 is supported by the circumferential wall 39 b-1. The recess 39b-3 is provided on the rear surface side of the projection 39 b.

A pair of

positioning ribs

39c and 39c protrude from opposite edges of the bottom wall 39a, which are opposite to each other in the left-right direction perpendicular to the up-down direction, toward the plate 34 side. When the operating portion 38 is attached to the housing 35, the push button 36a of the push switch 36 is positioned between the pair of

positioning ribs

39c and 39 c. Therefore, the operating portion 38 can be positioned in the left-right direction.

The pair of attaching

portions

39d and 39d protrude in the left-right direction from the pair of

positioning ribs

39c and 39 c. The attachment holes 39d-1 are provided in the pair of

attachment portions

39d and 39d so that attachment bosses 40c-1 of the light transmitting member 40, which will be described later, can be inserted into the attachment holes 39 d-1. The pair of attaching

portions

39d and 39d are provided to be separated from each other in the up-down direction.

As shown in fig. 5, 6, 9 and 10, the light transmitting member 40 is made of transparent polycarbonate or the like. The light-transmitting member 40 has a bottom wall 40a, a protrusion 40b, and a pair of

attachment portions

40c and 40 c. The bottom wall 40a is parallel to the plate. A projection 40b projects forward from the center of the bottom wall 40 a. The bottom wall 40a is provided in a shape similar to an ellipse in the up-down direction in a front view. The bottom wall 40a of the light-transmitting member 40 is superposed on the front surface side of the bottom wall 39a of the diffusion member 39. The through-hole 40a-1 is provided at the center of the bottom wall 40 a. The projection 40b has a circumferential wall 40b-1 and an upper wall 40 b-2. The circumferential wall 40b-1 is provided upright so as to extend forward from the circumferential edge of the through hole 40a-1 of the bottom wall 40 a. The edge portion of the upper wall 40b-2 is supported by the circumferential wall 40 b-1. The recess 40b-3 is provided on the rear surface side of the projection 40 b.

As shown in fig. 6, the protrusion 39b of the diffusion member 39 is inserted into the recess 40 b-3. In addition, a diffusion groove 40b-4 extending in the up-down direction is provided in the rear surface of the upper wall 40 b-2.

The pair of attaching

portions

40c and 40c respectively protrude from the bottom wall 40a toward the sides opposite to each other in the left-right direction. Rearwardly projecting attachment bosses 40c-1 are provided upright on the pair of

attachment portions

40c and 40 c. When the attachment boss 40c-1 is inserted and fitted into the attachment hole 39d-1 of the diffusion member 39, the diffusion member 39 and the light-transmitting member 40 are assembled as one body. In addition, the

attachment portions

40c and 40c are locked to locking claws (not shown) provided in the housing 35, so that the

attachment portions

40c and 40c can be attached to the housing 35.

According to the above-mentioned embodiment, the operating portion 38 of the push switch 36 is constituted by the diffusion member 39 and the light-transmitting member 40. Accordingly, the light emitted from the

LEDs

37 and 37 is diffused by the diffusion member 39 so that the diffusion member emits light uniformly as a whole, so that the light-transmitting member 40 provided on the front surface of the diffusion member 39 is visually recognized as if it emits light uniformly. Therefore, the operating portion 38 of the push switch 36 can be illuminated with a good appearance.

Further, according to the above-mentioned embodiment, the push switch 36 is arranged between the two

LEDs

37 and 37. Accordingly, the diffusion member 39 can be made to emit light more uniformly by the two

LEDs

37 and 37. Therefore, the operating portion 38 of the push switch 36 can be illuminated with a better appearance.

Further, according to the above-mentioned embodiment, the protrusion 39b of the diffusion member 39 is inserted into the recess 40b-3 of the light-transmitting member 40. That is, the light-transmitting member 40 is disposed to cover the protrusion 39b of the diffusion member 39. Therefore, the operating portion 38 of the push switch 36 can be illuminated with a better appearance.

In addition, according to the above-mentioned embodiment, the diffusion grooves 39a-1 and 40b-4 are provided in the rear surfaces of the diffusion member 39 and the light-transmitting member 40. Therefore, the light is further diffused by the diffusion grooves 39a-1 and 40 b-4. Therefore, the operating portion 38 of the push switch 36 can be illuminated with a better appearance.

Incidentally, according to the above-mentioned embodiment, the two

LEDs

37 and 37 are provided with the push switch 36 interposed therebetween. However, the number of LEDs 37 is not limited thereto. Only one LED 37 may be provided, or three or more LEDs 37 may be provided.

In addition, according to the above-mentioned embodiment, the protrusion 39b of the diffusion member 39 is received in the recess 40b-3 of the light-transmitting member 40. However, the present invention is not limited thereto. It works well as long as the plate-shaped diffusion member 39 and the plate-shaped light-transmitting member 40 are simply superposed on each other.

Any material may be used as the diffusion member 39 as long as it can diffuse light like polypropylene. Further, the light-transmitting member 40 may not be transparent, but light-transmitting like polycarbonate.

In addition, according to the above-mentioned embodiment, the diffusion grooves 39a-1 and 40b-4 are formed in the rear surfaces of the diffusion member 39 and the light transmission member 40. However, the present invention is not limited thereto. The provision of the diffusion grooves 39a-1 and 40b-4 is not essential and may be omitted. Further, the diffusion groove 39a-1 or 40b-4 may be provided in only one of the diffusion member 39 and the light-transmitting member 40.

Although the present invention has been described in detail or with reference to specific embodiments, it is apparent to those skilled in the art that various changes or modifications can be made in the present invention without departing from the spirit and scope of the invention.

The present application is based on international application No. pct/CN2019/114485 filed on 30/10/2019, the entire contents of which are incorporated herein by reference.

INDUSTRIAL APPLICABILITY

According to the present invention, it is possible to provide a thermal evaporation device capable of stabilizing the effect or duration of a drug. The present invention that achieves this effect is useful for a thermal evaporation apparatus.

According to the present invention, it is possible to provide a switch structure in which the operation portion of the switch can be illuminated with a good appearance. The present invention that achieves this effect is useful for a switch structure.

List of reference numerals

1 thermal evaporation device

12 coil heater

33 switch structure

36 push switch (switch)

37 LED (light source)

38 operating part

39 diffusion member

39a-1 diffusion groove

39b projection

40 light-transmitting member

40b-3 recess

40b-4 diffusion channel

131 USB interface (Power input part)

132 DC/DC converter (boost circuit)

Claims

1. A thermal evaporation apparatus having a heater for heating a medicament, the thermal evaporation apparatus comprising:

a power input part to which a USB power is input; and

a stabilizing circuit that stabilizes a voltage input from the power input part,

2. The thermal evaporation device of claim 1, wherein the stabilization circuit comprises a boost type DC/DC converter.

3. The thermal evaporation apparatus of claim 1 or 2, wherein the heater is constituted by a coil heater made of nichrome wire.

4. A switch structure, comprising:

a switch;

a light source that is turned ON or OFF so as to be interlocked with ON or OFF of the switch; and

a light-transmissive operating portion that is provided in front of the switch and the light source and that is configured to perform a pressing operation on the switch,

wherein the operation section has:

a diffusion member diffusing light from the light source; and

a light-transmitting member provided on a front surface side of the diffusion member.

5. The switch structure according to claim 4, wherein said light source is provided with at least two light sources; and is

Wherein the switch is arranged between the at least two light sources.