JP6397870B2 - Electronic water heater - Google Patents

Description

  The present invention relates to an electronic water heater, and more particularly, to an electronic water heater that gives a thermal stimulus to a pot of a human body using a radiation source that emits far infrared rays instead of a bowl.

  As disclosed in Japanese Patent Application Laid-Open No. 10-28714 (Patent Document 1), conventionally, an electronic warming apparatus has been proposed that gives thermal stimulation to acupoints of a human body by irradiating far infrared rays. This electronic heater has an infrared lamp, a concave mirror that reflects far infrared rays from the infrared lamp, and a convex lens that focuses the reflected far infrared rays, and directly irradiates the acupoints of the human body with the far infrared rays that are focused by the convex lens. is there.

  In addition, as shown in Japanese Patent No. 5314151 (Patent Document 2), a portable far-infrared heater that can maintain the long-term operation of the heat generating unit with a small amount of power by using an intermittent power supply has also been proposed. ing.

JP-A-10-28714 Japanese Patent No. 5314151

  The electronic warmer of Patent Document 1 has a configuration in which far infrared rays are focused by a convex lens. However, since most of the far infrared rays are absorbed by the lens, it has been found that far infrared rays that have passed through the lens are attenuated. Therefore, in the electronic warmer of Patent Document 1, it is impossible to give a thermal stimulus equivalent to that of a bowl to a vase of a human body.

  Further, in the warming device of Patent Document 2, it is proposed to adopt an intermittent power supply method in which a stop period of 1 second is provided every 3 to 5 seconds of power supply according to the temperature increase gradient of the heat generating unit. However, when the power (voltage) is repeatedly turned on and off, the amount of far-infrared energy applied to the skin surface of the human body cannot be instantaneously changed while maintaining a high level. Therefore, with such an intermittent irradiation method, it is not possible to effectively give a thermal stimulus to the pot of the human body.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electronic warming device that can effectively give a thermal stimulus to a pot of a human body.

  An electronic heater according to an aspect of the present invention includes a radiation source that radiates far infrared rays, a concave reflecting mirror that reflects far infrared rays from the radiation source as parallel light, and far infrared rays that are incident from the concave reflecting mirror. An off-axis parabolic mirror that reflects as focused light to be focused at a position, and intermittent irradiation means that intermittently irradiates far-infrared light by intermittently blocking far-infrared rays from the off-axis parabolic mirror to the focal position. Prepare.

  Preferably, the intermittent irradiation means is disposed within a range from the off-axis paraboloid mirror to the focal position, and includes a blocking member that blocks the far-infrared path, and a control unit that controls opening and closing of the path by controlling the blocking member. Including.

  The electronic warmer further includes a temperature sensor that detects the temperature of the skin surface at the far-infrared irradiation site, and the control unit preferably controls the blocking member according to the temperature of the skin surface detected by the temperature sensor.

  Moreover, it is desirable that the electronic warmer further includes a guide member for positioning the irradiation position on the skin surface. The guide member includes a contact portion that contacts the skin surface and an irradiation hole that is surrounded by the contact portion and disposed on the passage.

  In this case, it is desirable that the focal position of the off-axis parabolic mirror is determined at or near the irradiation hole of the guide member.

  The electronic heater may further include an adjustment mechanism for adjusting the relative position of the guide member with respect to the blocking member.

  It is also desirable to be able to operate in two modes, a mode in which far infrared rays are intermittently irradiated and a mode in which far infrared rays are continuously irradiated.

  ADVANTAGE OF THE INVENTION According to this invention, a thermal stimulus can be effectively given to the vase of a human body.

It is a perspective view which shows the example of an external appearance of the electronic water heater which concerns on embodiment of this invention. It is a figure which shows typically the structure of the electronic water heater which concerns on embodiment of this invention. It is a figure which shows typically the function of the interruption | blocking member in embodiment of this invention. It is a figure which shows notionally that the far-infrared rays irradiated to the skin surface by the electronic warming device which concerns on embodiment of this invention in the pulse form propagate to the acupuncture point (pot) of a human body. In embodiment of this invention, it is a time chart which shows the ON / OFF timing of the shielding member from the irradiation initial stage, and the change of the pulse width of a far-infrared ray. The electronic warmer which concerns on embodiment of this invention WHEREIN: The change of the far-infrared intensity | strength which reproduced the porridge, and the temperature change of skin are shown. It shows changes in far-infrared intensity and changes in skin temperature due to mochi using mogusa. It is a time chart which shows the other example of the on / off timing of the interruption | blocking member from the irradiation initial stage. It is a figure which shows typically the difference of two modes which the electronic water heater which concerns on the modification of embodiment of this invention has. It is a figure which shows typically the difference in the irradiation range to the skin surface in each of two modes which the electronic warmer which concerns on the modification of embodiment of this invention has. In a comparative example, it is a time chart which shows the ON / OFF timing of a heater voltage, and the output waveform of far infrared rays.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  FIG. 1 is a perspective view showing an example of the appearance of an electronic heater 1 according to the present embodiment. FIG. 2 is a diagram schematically showing the configuration of the electronic heater 1 according to the present embodiment. The electronic warmer 1 is a device that irradiates far-infrared rays on the skin surface 9 of a human body and gives a thermal stimulus to acupuncture points (pots) under the skin surface 9. Here, for ease of understanding, the electronic warmer 1 is disposed above the skin surface 9 to be irradiated in the state of use, and the irradiation direction of far infrared rays from the electronic warmer 1 to the skin surface 9 is downward. It will be explained as being.

  The electronic warmer 1 includes a housing 10, in which a radiation source 21 that radiates far infrared rays, a concave reflecting mirror 22 that reflects far infrared rays from the radiation source 21 as parallel light, and a concave reflecting mirror 22. It includes an off-axis parabolic mirror 23 that reflects incident far-infrared rays as focused light that converges at a predetermined focal position 31.

  As shown in FIG. 1, the housing 10 includes a hollow rectangular parallelepiped portion 11 and a cylindrical protruding portion 12 that protrudes downward from a lower portion of the rectangular parallelepiped portion 11. The housing 10 is formed of a plate-like member (for example, metal or resin) that does not have translucency. The rectangular parallelepiped portion 11 and the protruding portion 12 are connected without partitioning. The radiation source 21, the concave reflecting mirror 22, and the off-axis parabolic mirror 23 are accommodated inside the rectangular parallelepiped portion 11. The protruding portion 12 has a tapered shape, and a guide member 41 to be described later is provided at the distal end portion (that is, the lower end portion of the housing 10).

  The radiation source 21 is constituted by, for example, a halogen lamp including a filament. The surface of the halogen lamp is preferably ceramic coated. The radiation source 21 emits far infrared rays having a predetermined wavelength. The predetermined wavelength is desirably the same wavelength (around 9.8 μm) as the far infrared rays emitted from the cells of the human body.

  The concave reflecting mirror 22 is disposed at a focal position behind the radiation source 21 (one side in the horizontal direction). The concave reflecting mirror 22 receives far-infrared rays radiated from the radiation source 21 on its front surface and converts it into parallel light. Far-infrared rays converted into parallel light are emitted toward the off-axis parabolic mirror 23. Since the concave reflecting mirror 22 is arranged in an upright direction, the optical axis of parallel light from the concave reflecting mirror 22 toward the off-axis parabolic mirror 23 extends along the lateral direction.

  The off-axis parabolic mirror 23 shifts the axis of the incident far-infrared ray by 90 ° and focuses the far-infrared ray downward. Note that the deviation angle of the optical axis may not be 90 °. Far-infrared rays (focused light) reflected downward from the off-axis parabolic mirror 23 are applied to the skin surface 9 of the human body.

  Here, the guide member 41 includes a contact portion 13 that is in surface contact with the skin surface 9 of the human body, and an irradiation hole 14 that is surrounded by the contact portion 13 and allows far-infrared rays to pass therethrough. The irradiation hole 14 is disposed at the focal position 31 of the off-axis parabolic mirror 23. Thereby, the irradiation position on the skin surface 9 is set to the focal position 31 of the off-axis parabolic mirror 23. Accordingly, in use, if the guide member 41 is installed so that the irradiation hole 14 is positioned on the crucible to be irradiated, it is possible to accurately irradiate far-infrared rays in a beam shape on the crucible. As described above, the guide member 41 allows the practitioner to easily position the irradiation position on the skin surface 9. The irradiation hole 14 is typically circular, but may have other shapes.

  The irradiation hole 14 is ideally provided so that the focal position 31 of the off-axis paraboloidal mirror 23 is located at the center thereof. As long as it is on the far-infrared path to the focal position 31, it may be slightly shifted back and forth (vertical direction) from the focal position 31. That is, the focal position 31 of the off-axis parabolic mirror 23 only needs to be determined at or near the irradiation hole 14.

  The diameter of the irradiation hole 14 is about 5 mm. Thus, by making the diameter of the irradiation hole 14 relatively small, excess far-infrared rays scattered inside the housing 10 are removed at the contact portion 13 around the irradiation hole 14 and only the main component far-infrared rays are removed from the human body. Beam irradiation can be performed on the pot (skin surface 9). Thereby, the focusing accuracy of far infrared rays is improved. In addition, the diameter of the irradiation hole 14 may not be 5 mm, and should just be defined in the range of 3 mm or more and 10 mm or less. Or you may determine within the range of 3 mm or more and 20 mm or less.

  As described above, the electronic heater 1 is configured to focus the far infrared rays emitted from the radiation source 21 using the concave reflecting mirror 22 and the off-axis parabolic mirror 23. When trying to focus far infrared rays using a lens as in Patent Document 1, most of the far infrared rays are absorbed by the lens when passing through the lens, so that the intensity of the far infrared rays irradiated on the skin surface decreases. End up. On the other hand, since these concave mirrors are used in the electronic warmer 1, it is possible to focus the far infrared rays without attenuating them (or suppressing the attenuation amount).

  Therefore, according to the present embodiment, the filament of the radiation source 21 is projected at the focal position 31, and the far infrared rays are focused on the focal position 31 while maintaining the intensity of the far infrared radiation emitted from the radiation source 21. be able to. The concave surfaces (reflective surfaces) of the concave reflecting mirror 22 and the off-axis parabolic mirror 23 are preferably plated with gold in order to efficiently reflect far infrared rays.

  Here, in the case 10 of the electronic warmer 1, a blocking member 24 is further provided in a range from the off-axis parabolic mirror 23 to the focal position 31 (irradiation hole 14). The blocking member 24 can block the far-infrared (focused light) path 32 from the off-axis parabolic mirror 23 toward the focal position 31. The blocking member 24 is attached to the protruding portion 12 of the housing 10 through the attachment member 15 so as to be orthogonal (cross) to the optical axis of the focused light.

  The blocking member 24 is a known shutter that can be displaced between an open position where the passage 32 is opened and a closed position where the passage 32 is closed. When the blocking member 24 is in the on state and is in the open position, the far infrared rays from the off-axis parabolic mirror 23 pass through the passage 32 and reach the focal position 31 as shown in FIG. In this case, the far-infrared ray is irradiated to the skin surface 9 in the form of a beam. On the other hand, when the blocking member 24 is in the off state and is located at the closed position, the passage 32 is blocked by the blocking member 24 as shown in FIG. Far infrared rays do not reach the focal point 31. In this case, the far infrared rays are not irradiated on the skin surface 9.

  In the present embodiment, by periodically turning on / off the blocking member 24, far infrared rays passing through the passage 32 are intermittently blocked, and the skin surface 9 is intermittently irradiated with far infrared rays. That is, using the blocking member 24, the far infrared rays applied to the skin surface 9 are pulsed. Far-infrared rays irradiated on the skin surface 9 in a pulsed manner are propagated to acupuncture points 90 by molecular vibrations of the cells. FIG. 4 shows a conceptual diagram thereof.

  When the far-infrared focal position 31 is set at the irradiation position on the skin surface 9 as in the present embodiment, it is assumed that the skin surface 9 is burned when continuously irradiating the far-infrared radiation. By using the blocking member 24, the far infrared rays to be irradiated are pulsed. Therefore, according to the electronic heater 1, as shown in FIG. 5 to be described later, the far-infrared energy amount radiated is as high as the far-infrared energy amount (Ve) emitted by the radiation source 21 (lamp). Burning of the skin surface 9 can be prevented while maintaining. In other words, since the instantaneous amount of energy can be taken high, the same effect as the thermal stimulation of rice cakes burned and used can be obtained.

  FIG. 11 shows a comparative example. As shown in FIG. 11, when trying to intermittently irradiate far infrared rays by turning on / off the voltage of the heater as a radiation source, the output of the far infrared rays does not catch up with the on / off of the voltage and becomes an integrated waveform. . For this reason, the amount of thermal energy of the far infrared rays irradiated is much lower than the amount of thermal energy of the far infrared rays emitted from the radiation source even when it is on. In contrast, in the present embodiment, since the blocking member 24 that mechanically blocks the far-infrared passage 32 is used, it is possible to prevent a reduction in the amount of thermal energy of the far-infrared irradiated at the time of turning on. Therefore, according to the electronic warmer 1, the instantaneous thermal energy amount of far-infrared rays irradiated on the skin surface 9 can be set to be equal to or greater than the energy amount of the bowl.

  Referring to FIG. 2 again, the electronic heater 1 includes a control circuit (control unit) 25 that controls the blocking member 24. The control circuit 25 includes an arithmetic processing unit that performs arithmetic processing, a memory that stores programs and data, and a time measuring unit that performs a time measuring operation. The arithmetic processing unit of the control circuit 25 turns on / off the blocking member 24 at a predetermined cycle based on a program stored in the memory. In the present embodiment, the blocking member 24 and the control circuit 25 constitute an intermittent irradiation unit that intermittently irradiates far infrared rays.

  As described above, it is configured to prevent burns by intermittently irradiating the skin surface 9 with far-infrared rays. However, when the blocking member 24 is turned on / off at regular intervals throughout the use period, There is a possibility that the temperature becomes high. Therefore, it is desirable that the control circuit 25 adjust the on / off timing of the blocking member 24 according to the temperature of the skin surface 9. That is, it is desirable that the ratio of the far-infrared irradiation time per cycle (herein, this is also referred to as “far-infrared pulse width”) to be adjusted according to the temperature of the skin surface 9. As can be seen from FIGS. 5B and 5C, the far-infrared irradiation time is equal to the ON time of the blocking member 24.

  Therefore, the electronic heater 1 according to the present embodiment has a temperature sensor 26 that detects the temperature of the skin surface 9, and inputs a detection signal of the temperature sensor 26 to the control circuit 25. The temperature sensor 26 is provided on the surface of the contact portion 13 that is in surface contact with the skin surface 9. The arithmetic processing unit of the control circuit 25 adjusts the on / off timing of the blocking member 24 according to the temperature of the skin surface 9 detected by the temperature sensor 26. Thereby, the pulse width of the far infrared rays irradiated to the skin surface 9 is adjusted.

  With reference to FIG. 5, an example of a change in pulse width from the initial irradiation time (time t0) of the far infrared rays will be described. FIG. 5A shows that the far-infrared energy amount emitted from the radiation source 21 (lamp) is constant (Ve) during the period of use. FIG. 5B shows an example of the on / off timing of the blocking member 24 during the use period. FIG. 5C shows the far-infrared pulse width that changes in accordance with the on / off timing of the blocking member 24 during the use period.

  The control circuit 25 turns on / off the blocking member 24 in the first cycle from the initial irradiation of far infrared rays (at the start of use) until the temperature of the skin surface 9 reaches the first threshold (time t0 to t1). repeat. When the temperature of the skin surface 9 reaches the first threshold value, the control circuit 25 repeats on / off of the blocking member 24 in the second period. In the second period, compared to the first period, the on-time of the blocking member 24 remains constant and the off-time Ta is longer. As shown in FIG. 5B, the off time (far infrared rays) of the blocking member 24 is longer than the on time (far infrared irradiation time) of the shielding member 24 in both the first cycle and the second cycle. (Non-irradiation time) is longer.

  Thereafter, when the temperature of the skin surface 9 reaches a second threshold value that is higher than the first threshold value, the control circuit 25 repeats on / off of the blocking member 24 in the third period. In the third period, the on-time remains constant, and the off-time Ta is longer than that in the second period.

  Thus, in the process in which the temperature of the skin surface 9 rises, the temperature of the skin surface 9 can be prevented from becoming too high by gradually increasing the off time (and increasing the period).

  As shown in FIG. 5, in the electronic warmer 1 according to the present embodiment, the temperature of the skin surface 9 is fed back by the temperature sensor 26 to adjust the irradiation / non-irradiation timing. Burns can be prevented. Moreover, since far-infrared rays can be intermittently irradiated while keeping the instantaneous energy amount at a high level, it is possible to safely and effectively give a thermal stimulus to the vase of the human body.

  FIG. 7 shows changes in far-infrared intensity and changes in skin temperature due to rice cake using mogus. In the case of rice cake using mogu, the intensity of far-infrared light increases as time passes from the beginning of burning to the peak, but the skin temperature also rises to a considerably high temperature as the far-infrared intensity increases. Therefore, in order to obtain the necessary stimulus for treatment, there is a possibility that the skin surface may be burned even when using a bowl.

  FIG. 6 shows a change in far-infrared intensity and a change in skin temperature in the electronic warmer 1 that reproduces a rice cake using mogus. For example, by adjusting the voltage of the radiation source 21, the electronic warmer 1 does not keep the intensity of the far infrared rays emitted from the radiation source 21 constant, but can change the intensity of the emitted far infrared rays in the same manner as the bowl. it can.

  As shown in FIG. 6, even if the far-infrared heat energy amount at the peak time is the same as that of the rice cake, the temperature of the skin surface 9 is fed back by the temperature sensor 26 so that the temperature of the skin surface 9 at the peak time is reduced. It can be lowered than in the case of. Therefore, by reproducing the change pattern of the far-infrared intensity of the porridge (that is, the pot treatment pattern by the porridge), it is possible to prevent the skin surface 9 from being burned while effectively giving a thermal stimulus to the pot.

  In the present embodiment, in order to suppress the temperature rise of the skin surface 9, the ON time of the blocking member 24 (far infrared irradiation time) remains constant, and the OFF time of the blocking member 24 (far infrared non-irradiation time). However, it is not limited to such a method. In order to suppress the temperature rise of the skin surface 9, the ratio of the irradiation time in the cycle unit may be gradually reduced. For example, as shown in FIG. 8, the cycle (Tc) remains constant, The on time (Tb) may be gradually shortened. In this case also, the off time increases.

(Modification)
In the above embodiment, the far-infrared ray is intermittently irradiated to the skin surface 9 during the period of use, but the electronic warming apparatus 1 has a mode in which far-infrared rays are intermittently irradiated and a mode in which far-infrared rays are continuously irradiated. The two modes may be operable. In the present modification, the former mode functions as a warm mode and the latter mode functions as a thermal mode.

  FIG. 9A is a diagram schematically showing the relative position of the guide member 41 in the warm mode, and FIG. 9B is a diagram schematically showing the relative position of the guide member 41 in the warm mode. In this modification, the diameter of the irradiation hole 14 of the guide member 41 is larger than the diameter described in the embodiment, for example, about 30 mm to 60 mm.

  As shown in FIG. 9A, the relative position of the guide member 41 in the warm bath mode is the same as that in the above embodiment. Therefore, the irradiation position on the skin surface 9 is set at the focal position 31 of the off-axis parabolic mirror 23. On the other hand, as shown in FIG. 9B, the relative position of the guide member 41 in the warm mode is closer to the blocking member 24 than the relative position of the guide member 41 in the warm mode. That is, the irradiation position on the skin surface 9 is set in front of the focal position 31 (on the blocking member 24 side).

  Therefore, in the warm mode, the distance L2 between the blocking member 24 and the guide member 41 (contact portion 13) is shorter than the distance L1 in the warm mode. In the following description, the position of the guide member 41 in the warm mode is referred to as “lowermost position”, and the position of the guide member 41 in the warm mode is referred to as “uppermost position”.

  In the warm bath mode, since the guide member 41 is located at the lowest position, as shown in FIG. 10 (A), the irradiation range 91 on the skin surface 9 is as small as a bowl using a moxa. On the other hand, in the thermal mode, the guide member 41 is located at the uppermost position, so that far infrared rays having a relatively large diameter in the middle of focusing pass through the irradiation hole 14. Therefore, as shown in FIG. 10B, the irradiation range 92 on the skin surface 9 in the warm mode is larger than the irradiation range 91 in the warm mode.

  In this modification, the electronic heater 1 has an operation unit (not shown) for selecting a mode, and the control circuit 25 controls the blocking member 24 in accordance with an instruction signal from the operation unit. The operation unit is provided, for example, on the surface of the housing 10.

  Specifically, when the ablation mode is selected by the practitioner (user), the control circuit 25 performs on / off control (opening / closing control) of the blocking member 24 as described in the above-described embodiment. On the other hand, when the thermal mode is selected, the control circuit 25 continuously turns off the blocking member 24 (open position). In the thermal mode, by continuously irradiating the skin surface 9 with far-infrared focused light having a relatively large diameter, it is possible to partially increase the body temperature and produce a heat shock protein.

  The adjustment of the position of the guide member 41 may be automatically performed in the electronic warmer 1 or may be manually performed by a practitioner. In the former case, the electronic heater 1 has an adjustment mechanism (not shown) for displacing the position of the guide member 41 between the lowermost position and the uppermost position, and via an operation unit (not shown). In response to the selected mode, the control circuit 25 controls the adjusting mechanism.

  The size of the irradiation hole 14 may also be automatically adjusted according to the mode selection. For example, when the diameter (for example, 5 mm) of the irradiation hole 14 shown in the embodiment is set as a default and the thermal mode is selected, the diameter of the irradiation hole 14 may be adjusted to be large.

  As described above, according to this modification, two different treatments can be performed with one electronic warmer 1. Therefore, the usefulness of the electronic heater 1 can be enhanced.

  In this modification, intermittent irradiation is performed when the position of the guide member 41 is the lowermost position, and continuous irradiation is performed when the position of the guide member 41 is the uppermost position. However, the position of the guide member 41 is the same. It may be possible to operate in different irradiation modes. For example, intermittent irradiation may be performed only for a fixed time while the position of the guide member 41 is set to the uppermost position.

  In the said embodiment and its modification, the intermittent irradiation means to intermittently irradiate far infrared rays was comprised by the interruption | blocking member 24 and the control circuit 25 which controls it. However, the intermittent irradiation means may be composed of one or more members of other types as long as at least the far infrared rays from the off-axis parabolic mirror 23 to the focal position 31 can be intermittently cut off.

  Further, the irradiation hole 14 of the guide member 41 has been described as being a through hole provided in the contact portion 13, but the contact portion 13 is disposed so as to surround the irradiation hole 14 (or adjacent to the irradiation hole 14). For example, the irradiation hole 14 may be a notch provided in the contact portion 13.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Electronic warmer, 9 Skin surface, 10 Housing | casing, 13 Contact part, 14 Irradiation hole, 15 Mounting member, 21 Radiation source, 22 Concave reflecting mirror, 23 Off-axis parabolic mirror, 24 Blocking member, 25 Control circuit , 26 temperature sensor, 31 focal position, 32 passages, 41 guide members, 91, 92 irradiation range.

Claims (6)

An electronic water heater that focuses far infrared rays and irradiates a part including the skin surface,
A radiation source that emits far-infrared radiation; and
A concave reflecting mirror that reflects far-infrared rays from the radiation source as parallel light;
An off-axis parabolic mirror that reflects far-infrared rays that are incident from the concave reflecting mirror as focused light that is focused at a predetermined focal position;
Intermittent irradiation means for intermittently irradiating far-infrared rays by intermittently blocking far-infrared rays from the off-axis paraboloid mirror to the focal position in a state where the focus position of the focused light is aligned with the skin surface ; An electronic water heater. The intermittent irradiation means includes
A blocking member disposed in a range from the off-axis parabolic mirror to the focal position, and blocking a far-infrared ray path;
The electronic heater according to claim 1, further comprising a control unit that controls opening and closing of the passage by controlling the blocking member. It further includes a temperature sensor for detecting the temperature of the skin surface of the far infrared irradiation target ,
The electronic heater according to claim 2, wherein the control unit controls the blocking member according to a temperature of a skin surface detected by the temperature sensor. A guide member for positioning the irradiation position on the skin surface;
4. The electronic heater according to claim 2, wherein the guide member includes a contact portion that contacts the skin surface, and an irradiation hole that is surrounded by the contact portion and disposed on the passage.   The electronic heater according to claim 4, wherein the focal position of the off-axis parabolic mirror is determined at or near the irradiation hole of the guide member. By adjusting the relative position of the guide member from the previous SL-axis paraboloidal mirror and said shielding member, the position of the guide member, a first position in which the focal position is a position of the skin surface, the An adjustment mechanism for displacing between the second position where the focal position is an internal position from the skin surface ;
The position of the guide member is set to the first position by the adjusting mechanism, the warming mode in which far-infrared rays are intermittently irradiated by the intermittent irradiation means, and the position of the guide member to the second position by the adjusting mechanism. The electronic warmer according to claim 4, wherein the electronic warmer is set and operable in two modes: a thermal mode in which far infrared rays are continuously irradiated .

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