JP2014018320A - Thermal light irradiation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermal light irradiation device that can suppress an amount of power consumed for bringing a skin temperature to an effective temperature range and allows free setting of a period of time to hold the skin temperature in the effective temperature range.SOLUTION: A thermal light irradiation device comprises: a power supply unit 2; a light source unit 3 for generating a group of irradiation light; an irradiation trigger unit 4 for generating a trigger signal; and a switching control unit 5 for causing a current supplied from the power supply unit 2 to flow into the light source unit 3 in response to generation of the trigger signal so that the light source unit 3 emits light. The switching control unit 5 causes the light source unit 3 to emit a group of irradiation light composed of heating pulse light 11 for raising a skin temperature in a heating time band T1 at the beginning, and heat holding pulse light 21 for holding a skin temperature in a heat holding time band T2 to follow the heating time band T1.

Description

  The present invention relates to a thermal light irradiation apparatus that irradiates a skin with pulsed light for beauty and medical purposes.

  2. Description of the Related Art Conventionally, a thermal light irradiation apparatus using a light source such as a flash lamp has been used for beauty and medical purposes such as beautiful skin and hair removal (see, for example, Patent Document 1). As this conventional thermal light irradiation apparatus, there are a so-called single pulse system and a multi-pulse system.

  The single pulse method is a method in which a single pulse is irradiated in one irradiation period. In the single pulse method, the light intensity and the pulse width are set so that the total heat amount of light applied to the skin becomes a set value in one irradiation period.

  The multi-pulse method is a method of repeatedly irradiating a plurality of the same pulses in one irradiation period. In the multi-pulse method, the light intensity, the pulse width, the pulse interval, and the number of pulses are set so that the total heat amount of light applied to the skin becomes a set value in one irradiation period.

  And if pulse light is irradiated to skin using such a thermal light irradiation apparatus, the temperature of skin rises because light energy is converted into thermal energy, and irritation | stimulation is given to skin. Thereby, the thermal effect | action for beauty and a medical use is given to skin. In addition, since the reach | attainment position to the deep part of skin changes with the wavelength of light, since the thermal effect | action of this light also changes, it is used for various beauty and medical treatments using these characteristics.

JP 2007-252742 A

  By the way, the skin temperature is raised by irradiating the skin with pulsed light. However, if the skin temperature is too low, the beauty and medical effects are not sufficient, and if the skin temperature is too high, the burden on the skin increases. . For this reason, the temperature range in which beauty and medical effects are effectively exhibited and the burden on the skin is small becomes the effective temperature range, and there are a temperature range lower than the effective temperature range and a temperature range higher than the effective temperature range. Ineffective temperature range. Therefore, when using such a thermal light irradiation apparatus, it is necessary to irradiate pulsed light so that the skin temperature is maintained in the effective temperature region.

  However, the skin temperature rises while the pulsed light is irradiated, but decreases when the pulsed light is not irradiated. Therefore, in the conventional thermal light irradiation apparatus, the temperature holding time in the effective temperature region is short. In addition, the temperature holding time in the effective temperature region cannot be set freely.

  Here, the relationship between the pulse waveform and the skin temperature in the single pulse method and the multipulse method will be described with reference to FIGS. 4 and 5 are diagrams showing a pulse waveform and a skin temperature in the conventional single pulse method. FIG. 6 is a diagram showing a pulse waveform and skin temperature in the conventional multi-pulse method. 4 to 6, the curve indicated by the symbol L is a skin temperature curve representing the skin temperature.

  As shown in FIG. 4, in the single pulse method, the skin temperature is rapidly raised to the effective temperature region a as shown in the skin temperature curve L by irradiating a single pulsed light in one irradiation time. Can do. However, when the irradiation with the pulsed light is finished, the skin temperature is lowered, so that the temperature holding time Δt during which the skin temperature is held in the effective temperature region a cannot be made long.

In this case, it is possible to reach the pulse light I _L by increasing the intensity of light as skin temperature curve L rapidly effective temperature range a temperature of the skin like _L shown in FIG. However, since the skin temperature rapidly increases, even if the skin temperature reaches the effective temperature region a, the skin temperature immediately exceeds the effective temperature region a and increases to the invalid temperature region c. Therefore, when the temperature of the skin to reduce the pulse width of the pulsed light I _L in order to prevent the rising up disable temperature region c, the temperature holding time? Ti _L the temperature of the skin is held in the effective temperature region a is shortened .

On the other hand, by extending the pulse width with decreasing the intensity of the light as the pulsed light I _S shown in FIG. 5, it is possible to moderately increase the temperature of the skin as the skin temperature curve L _S. Thereby, after the skin temperature reaches the effective temperature region a, it is possible to take a long time until the skin temperature rises to the invalid temperature region c, so that the skin temperature is held in the effective temperature region a. temperature holding time? ti _S can take longer. However, since the light intensity is low, the time until the skin temperature reaches the effective temperature region a becomes long. In some cases, even if the pulse width is increased, the heat radiation from the skin is better, and the skin temperature may not reach the effective temperature region a.

  As shown in FIG. 6, in the multi-pulse method, by repeatedly irradiating a plurality of the same pulsed light in one irradiation time, the skin temperature is gradually increased as shown in the skin temperature curve L, and the skin temperature is increased. The temperature holding time Δt held in the effective temperature region a can be increased. However, since the skin temperature decreases while the pulse light is not irradiated, the time until the skin temperature reaches the effective temperature region a becomes longer. As a result, the time zone during which a current for generating pulsed light is supplied increases, and the power consumption increases.

  Then, this invention suppresses the electric power consumption for making the skin temperature reach an effective temperature area, and while setting the time to hold | maintain the skin temperature in an effective temperature area freely, the thermal light irradiation apparatus which can be set freely The purpose is to provide.

  A thermal light irradiation apparatus according to the present invention is a thermal light irradiation apparatus that irradiates skin with pulsed light, and includes a light source unit and a light irradiation control unit that emits pulsed light from the light source unit, and controls light irradiation. The unit causes the light source unit to irradiate the heating pulse light that raises the skin temperature in the heating time zone, and causes the light source unit to radiate the heat holding pulse light that maintains the skin temperature in the heat holding time zone following the heating time zone.

  According to the thermal light irradiation apparatus according to the present invention, it is possible to shorten the time until the skin temperature reaches the effective temperature region by irradiating the heating pulse light in the first heating time zone, and the subsequent heat By irradiating the heat holding pulsed light in the holding time zone, the skin temperature can be held in the effective temperature region. For this reason, while being able to suppress the power consumption for making the skin temperature reach the effective temperature region, the time for maintaining the skin temperature in the effective temperature region can be freely set by adjusting the heat holding pulse light. be able to.

  Further, according to the present invention, the average heat amount per unit time of the heat holding pulse light in the heat holding time zone can be smaller than the average heat amount per unit time of the heating pulse light in the heating time zone. By setting the heating pulse light and the heat holding pulse light in this way, the temperature of the skin can be quickly reached the effective temperature region by irradiating the heating pulse light, and the heat holding pulse light is emitted. Thus, the skin temperature can be appropriately maintained in the effective temperature range.

  In the present invention, the heating pulsed light may be single pulsed light composed of one pulsed light. In this way, by making the heating pulse light into single pulse light, the skin temperature can be quickly reached the effective temperature region.

  In the present invention, the average intensity per unit time of the heat holding pulsed light in the heat holding time zone may be smaller than the average intensity per unit time of the heating pulsed light in the heating time zone. Thus, the skin temperature can be appropriately held in the effective temperature range by lowering the average intensity per unit time of the heat holding pulsed light than that of the heating pulsed light.

  In the present invention, the heat holding pulse light may be multi-pulse light in which a plurality of pulse lights having a pulse width shorter than that of the heating pulse light are repeated. In this way, by making the heat holding pulsed light into multi-pulsed light, the skin temperature can be appropriately held in the effective temperature region.

  ADVANTAGE OF THE INVENTION According to this invention, while suppressing the power consumption for making the skin temperature reach an effective temperature area | region, the time to hold | maintain the skin temperature in an effective temperature area | region can be set freely.

It is a block diagram which shows schematic structure of the thermal light irradiation apparatus which concerns on embodiment. It is the figure which showed the pulse waveform and skin temperature in 1st Embodiment. It is the figure which showed the pulse waveform and skin temperature in 2nd Embodiment. It is the figure which showed the pulse waveform and skin temperature in the conventional single pulse system. It is the figure which showed the pulse waveform and skin temperature in the conventional single pulse system. It is the figure which showed the pulse waveform and skin temperature in the conventional multipulse system.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a thermal light irradiation device according to 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.

(First embodiment)
FIG. 1 is a block diagram illustrating a schematic configuration of a thermal light irradiation apparatus according to the embodiment. As shown in FIG. 1, the thermal light irradiation device 1 according to the present embodiment irradiates the skin with an irradiation light group composed of a plurality of pulse lights, and includes a power supply unit 2, a light source unit 3, and irradiation. A trigger unit 4 and a switching control unit 5 are provided.

  The power supply unit 2 includes a large-capacity capacitor and the like, and supplies current to the light source unit 3 by switching control by the switching control unit 5.

  The light source unit 3 generates an irradiation light group that irradiates the skin, and includes, for example, a xenon lamp or an LED.

  The irradiation trigger unit 4 generates a trigger signal for causing the irradiation light group to emit light from the light source unit 3. The irradiation trigger unit 4 generates a trigger signal when the user of the thermal light irradiation device 1 performs an operation for irradiating the irradiation light group with a switch or the like, and transmits the generated trigger signal to the switching control unit 5. .

  The switching control unit 5 is a light irradiation control unit that performs switching control (light emission control) for causing the light source unit 3 to emit light by causing the current supplied from the power source unit 2 to flow through the light source unit 3. The switching control unit 5 sets the pulse waveform of the irradiation light group so that the total heat amount of the light irradiated to the skin becomes a set value. The setting of the total heat amount is not particularly limited, and can be appropriately performed by the user of the thermal light irradiation device 1 according to the amount of pigment of the user, the size of pores, and the like. And whenever the switching control part 5 receives the trigger signal transmitted from the irradiation trigger part 4, the irradiation light group is irradiated to skin from the light source part 3 according to the set pulse waveform.

  With reference to FIG. 2, the irradiation light group irradiated from the light source part 3 by the switching control by the switching control part 5 is demonstrated in detail. In addition, in FIG. 2, the curve shown with the code | symbol L is a skin temperature curve showing the temperature of skin.

  As shown in FIG. 2, the irradiation light group is a group of pulses irradiated in one irradiation period, and the heating pulse light 11 that raises the skin temperature in the first heating time zone T1 and the heating time zone T1. And a heat holding pulse light 21 for holding the skin temperature in the subsequent heat holding time zone T2.

  The heating pulse light 11 is single pulse light composed of one pulse light. The heat retaining pulse light 21 is multi-pulse light in which a plurality of pulse lights 21a are repeated. For this reason, in the heating time zone T1, there is only a time during which the heating pulse light 11 is irradiated. In the heat holding time zone T2, there are a time during which the pulse light 21a is irradiated and a time during which the pulse light 21a is not irradiated. Exists.

  Since the skin temperature rises while the pulse light is irradiated and the skin temperature decreases while the pulse light is not irradiated, the heating pulse light 11 is included in one irradiation light group in the heating time period T1. Is irradiated with the first heating section t1, the cooling section t2 in which the pulse light 21a of the heat holding pulse light 21 is not irradiated in the heat holding time period T2, and the pulse light 21a of the heat holding pulse light 21 in the heat holding time period T2. There is a second heating zone t3 to be irradiated.

  The first heating section t1 is a section in which the skin temperature is quickly raised to the effective temperature region a. The cooling section t2 is a section that prevents the skin temperature from rising from the effective temperature region a to the ineffective temperature region c by lowering the temperature of the skin heated in the first heating section t1 or the second heating section t3. It is. The second heating section t3 is a section that prevents the skin temperature from decreasing from the effective temperature region a to the ineffective temperature region b by heating the skin whose temperature has decreased in the cooling region t2. Here, the effective temperature region a is a temperature region in which beauty and medical effects are effectively exhibited and the burden on the skin is small. The invalid temperature region b is a temperature region lower than the effective temperature region a, and the invalid temperature. The region c is a temperature region that is higher than the effective temperature region a.

  In the heating pulse light 11 and the heat holding pulse light 21, the average heat amount per unit time of the heat holding pulse light 21 in the heat holding time zone T2 is greater than the average heat amount per unit time of the heating pulse light 11 in the heating time zone T1. Is also a small relationship. If the heating pulse light 11 and the heat holding pulse light 21 have such a relationship, the intensity (intensity), pulse width, pulse shape, etc. of the heating pulse light 11 and the heat holding pulse light 21 are not particularly limited.

  The intensity, the pulse width (first heating section t1), the pulse shape, and the like of the heating pulse light 11 rapidly increase the skin temperature to the effective temperature region a, and the skin temperature is higher than the effective temperature region a. It can be set as appropriate according to the thermal response characteristics (skin quality) of the skin, etc. within a range where it does not rise to the region c.

  Here, the higher the intensity of the heating pulse light 11, the higher the irradiation heat amount of the heating pulse light 11 (the average heat amount per unit time of the heating pulse light 11 in the heating time zone T1). Further, as the pulse width of the heating pulse light 11 (first heating section t1) becomes wider, the amount of heat applied to the heating pulse light 11 becomes higher.

  For this reason, when the irradiation heat amount of the heating pulse light 11 is high and the skin temperature rises to the ineffective temperature region c, the intensity of the heating pulse light 11 is reduced or the pulse width of the heating pulse light 11 (first heating section) What is necessary is just to narrow t1). On the other hand, when the amount of heat applied to the heating pulse light 11 is low and the skin temperature does not rise to the effective temperature region a, the intensity of the heating pulse light 11 is increased or the pulse width of the heating pulse light 11 (first heating section) What is necessary is just to make t1) wide.

  As the pulse shape of the heating pulse light 11, a rectangular wave is most suitable, but various waveforms such as a triangular wave and a sawtooth wave can be employed.

  In addition, the intensity | strength of the heating pulse light 11, a pulse width, a pulse shape, etc. may be preset and the user of the thermal light irradiation apparatus 1 etc. may set suitably. In addition, the intensity of the heating pulse light 11 can be adjusted by increasing or decreasing the current supplied to the light source unit 3.

  The intensity, pulse width (second heating period t3), pulse interval (cooling period t2), pulse shape, etc. of each pulsed light 21a constituting the heat retaining pulsed light 21 do not lower the skin temperature to the ineffective temperature range b. In addition, within a range where the skin temperature is not raised to the invalid temperature region c, that is, within a range where the skin temperature can be held in the effective temperature region a, the skin temperature can be appropriately set according to the thermal response characteristics (skin quality) of the skin. it can.

  Here, the higher the intensity of each pulsed light 21a, the higher the irradiation heat amount of the heat retaining pulsed light 21 (the average heat amount per unit time of the heat retaining pulsed light 21 in the heat retaining time zone T2). Further, as the pulse width (second heating section t3) of each pulsed light 21a is increased, the amount of heat applied to the heat retaining pulsed light 21 is increased. Further, as the pulse interval (cooling section t2) of each pulsed light 21a becomes narrower, the amount of heat applied to the heat retaining pulsed light 21 becomes higher.

  For this reason, when the skin temperature rises to the invalid temperature region c in the heat holding time period T2, the intensity of each pulsed light 21a is reduced, or the pulse width (second heating section t3) of each pulsed light 21a is narrowed. Or the pulse interval (cooling section t2) of each pulsed light 21a may be increased. On the contrary, when the skin temperature falls to the ineffective temperature region b in the heat holding time period T2, the intensity of each pulsed light 21a is increased, or the pulse width (second heating section t3) of each pulsed light 21a is increased. Or the pulse interval (cooling section t2) of each pulsed light 21a may be narrowed.

  The relationship between the pulse width (second heating section t3) of each pulsed light 21a and the interval (cooling section t2) of each pulsed light 21a depends on the thermal response characteristics (skin quality) of the skin, the environment, and the characteristics of the light source unit 3. In general, the relationship can be t2 / t3 = about 3-5.

  The number of repetitions of the pulsed light 21a in the heat holding pulsed light 21, that is, the number of repetitions of the cooling section t2 and the second heating section t3, is appropriately set according to the time for which the skin temperature is desired to be held in the effective temperature region a. Can do.

  As the pulse shape of each pulsed light 21a, a rectangular wave is most suitable. For example, various waveforms such as a triangular wave and a sawtooth wave can be adopted.

  The intensity, pulse width, pulse interval, pulse shape, and the like of each pulsed light 21a may be set in advance, or may be set as appropriate by the user of the thermal light irradiation device 1. The intensity of each pulsed light 21 a can be adjusted by increasing or decreasing the current supplied to the light source unit 3.

  Next, changes in the skin temperature when the skin is irradiated with the irradiation light group from the thermal light irradiation device 1 will be described.

  As shown in FIGS. 1 and 2, when a trigger signal is transmitted from the irradiation trigger unit 4 to the switching control unit 5, the switching control unit 5 first heats the skin from the light source unit 3 in the first heating time period T1. The pulsed light 11 is irradiated.

  Then, since the heating pulse light 11 is continuously irradiated in the first heating section t1, the skin temperature rises rapidly and reaches the effective temperature region a.

  When the heating pulse light 11 is irradiated in this manner, the switching control unit 5 subsequently causes the light holding unit 21 to irradiate the skin with the heat holding pulse light 21 in the heat holding time zone T2 following the heating time zone T1.

  Then, first, since it becomes the cooling section t2 in which the pulsed light 21a is not irradiated, the temperature of the skin that has risen due to the irradiation of the heating pulsed light 11 decreases. This prevents the skin temperature from rising to the invalid temperature region c. Next, since it becomes the 2nd heating area t3 to which the pulsed light 21a is irradiated, the skin temperature lowered by the non-irradiation of the pulsed light 21a increases. Thereby, it is prevented that the skin temperature falls to the invalid temperature region b. Next, since the cooling section t2 is not irradiated with the pulsed light 21a, the temperature of the skin that has risen due to the irradiation of the pulsed light 21a decreases. This prevents the skin temperature from rising to the invalid temperature region c. Next, since it becomes the 2nd heating area t3 to which the pulsed light 21a is irradiated, the skin temperature lowered by the non-irradiation of the pulsed light 21a increases. Thereby, it is prevented that the skin temperature falls to the invalid temperature region b.

  Then, by repeatedly irradiating the pulsed light 21a, the cooling section t2 and the second heating section t3 are repeated, and the skin temperature is maintained while the repeated cycle of the cooling section t2 and the second heating section t3 continues. Is kept in the effective temperature region a. Thereafter, the irradiation of the heat holding pulse light 21 is completed, and the irradiation of the irradiation light group by the thermal light irradiation device 1 is completed, whereby the skin temperature is lowered from the effective temperature region a to the ineffective temperature region b.

  For this reason, the skin temperature is maintained in the effective temperature region a after the irradiation of the heating pulse light 11 and the skin temperature reaches the effective temperature region a until the irradiation of the heat holding pulse light 21 ends. Temperature holding time Δt.

  Thus, according to the thermal light irradiation apparatus according to the present embodiment, the time is shortened until the skin temperature reaches the effective temperature region a by irradiating the heating pulse light 11 in the first heating time zone T1. The skin temperature can be held in the effective temperature region a by irradiating the heat holding pulsed light 21 in the subsequent heat holding time zone T2. For this reason, while being able to suppress the power consumption for making the skin temperature reach the effective temperature region a, the time for maintaining the skin temperature in the effective temperature region a can be freely adjusted by adjusting the heat holding pulse light 21. Can be set to

  Further, the heating pulse light 11 is reduced by making the average heat amount per unit time of the heat holding pulse light 21 in the heat holding time zone T2 smaller than the average heat amount per unit time of the heating pulse light 11 in the heating time zone T1. Irradiation allows the skin temperature to quickly reach the effective temperature region a, and irradiation of the heat holding pulsed light 21 allows the skin temperature to be appropriately maintained in the effective temperature region a.

  Moreover, the temperature of skin can be rapidly reached to the effective temperature area | region a by making the heating pulse light 11 into single pulse light.

  Further, by making the heat holding pulse light 21 into multi-pulse light, the skin temperature can be appropriately held in the effective temperature region a.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  The second embodiment is basically the same as the first embodiment, and is different from the first embodiment only in the configuration of the heat holding pulsed light. For this reason, below, only the part which is different from 1st Embodiment is demonstrated, and description of the part similar to 1st Embodiment is abbreviate | omitted.

  FIG. 3 is a diagram showing a pulse waveform and skin temperature in the second embodiment. In addition, in FIG. 3, the curve shown with the code | symbol L is a skin temperature curve showing the temperature of skin. As shown in FIG. 3, the irradiation light group of the second embodiment includes the heating pulse light 12 that raises the skin temperature in the first heating time zone T1, and the skin in the heat holding time zone T2 that follows the heating time zone T1. And the heat holding pulsed light 22 that holds the temperature of

  The heating pulse light 12 is the same as the heating pulse light 11 in the first embodiment. The heat retaining pulse light 22 is a single pulse light composed of one pulse light. For this reason, in one irradiation light group, the 1st heating area t4 in which the heating pulse light 12 is irradiated in the heating time zone T1, and the second heating area in which the heat holding pulse light 22 is irradiated in the heat holding time zone T2. t5 exists. The first heating section t4 is a section in which the skin temperature is quickly raised to the effective temperature region a. The second heating section t5 is a section in which the skin temperature that has reached the effective temperature area a in the first heating section t4 is held in the effective temperature area a.

  In the heating pulse light 12 and the heat holding pulse light 22, the average intensity per unit time of the heat holding pulse light 22 in the heat holding time zone T2 is greater than the average intensity per unit time of the heating pulse light 21 in the heating time zone T1. Is also a small relationship. Further, the heating pulse light 12 and the heat holding pulse light 22 are such that the average heat amount per unit time of the heat holding pulse light 22 in the heat holding time zone T2 is the average per unit time of the heating pulse light 12 in the heating time zone T1. The relationship is smaller than the amount of heat. If the heating pulse light 12 and the heat holding pulse light 22 have such a relationship, the intensity (intensity), pulse width, pulse shape, etc. of the heating pulse light 12 and the heat holding pulse light 22 are not particularly limited.

  The intensity of the heat retaining pulse light 22 can maintain the skin temperature in the effective temperature region a in a range where the skin temperature is not lowered to the invalid temperature region b and the skin temperature is not raised to the invalid temperature region c. In the range, it can set suitably according to the thermal response characteristic (skin quality) etc. of skin.

  Here, the higher the intensity of the heat holding pulse light 22, the higher the irradiation heat amount of the heat holding pulse light 22 (the average heat amount per unit time of the heat holding pulse light 22 in the heat holding time zone T2). For this reason, when the skin temperature rises to the invalid temperature region c in the heat holding time period T2, the intensity of the heat holding pulsed light 22 may be lowered. On the other hand, when the skin temperature falls to the ineffective temperature region b in the heat holding time period T2, the intensity of the heat holding pulsed light 22 may be increased.

  The pulse width (second heating section t5) of the heat holding pulse light 22 is not particularly limited, and can be set as appropriate according to the time for which the skin temperature is desired to be held in the effective temperature region a.

  The pulse shape of the heat retaining pulse light 22 is a pulse of a constant level, but may be a wave with a wave such as a sine wave or a triangular wave superimposed.

  In addition, the intensity | strength, pulse width, pulse shape, etc. of the heat | fever holding pulse light 22 may be preset, and the user of the thermal light irradiation apparatus 1 etc. may set suitably.

  Next, changes in the skin temperature when the skin is irradiated with the irradiation light group from the thermal light irradiation device 1 will be described.

  As shown in FIGS. 1 and 3, when a trigger signal is transmitted from the irradiation trigger unit 4 to the switching control unit 5, the switching control unit 5 first heats the skin from the light source unit 3 in the first heating time period T1. The pulsed light 12 is irradiated. Then, since the heating pulse light 12 is continuously irradiated in the first heating section t4, the skin temperature rises rapidly and reaches the effective temperature region a.

  When the heating pulse light 12 is irradiated in this manner, the switching control unit 5 subsequently causes the light source unit 3 to irradiate the skin with the heat holding pulse light 22 in the heat holding time zone T2 following the heating time zone T1. Then, since the heat holding pulse light 22 is continuously irradiated in the second heating section t5, the skin temperature is held in the effective temperature region a.

  For this reason, the skin temperature is held in the effective temperature region a after the irradiation of the heating pulse light 12 until the skin temperature reaches the effective temperature region a until the irradiation of the heat holding pulse light 22 ends. Temperature holding time Δt.

  Thus, according to the thermal light irradiation apparatus according to the present embodiment, if the heat holding pulse light 22 is a single pulse light whose average intensity per unit time of light is lower than that of the heating pulse light 12, the heating pulse light 12. And the heat retention pulsed light 22 can be made to quickly bring the skin temperature to the effective temperature region a and appropriately keep the skin temperature in the effective temperature region a. it can.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the multi-pulse light and the single pulse light are used as specific examples of the heat holding pulse light. However, as the heating pulse light and the heat holding pulse light, heat holding in the heat holding time zone T2 is described. Any pulsed light may be employed as long as the average amount of heat per unit time of the pulsed light is smaller than the average amount of heat per unit time of the heated pulsed light in the heating time zone T1.

DESCRIPTION OF SYMBOLS 1 ... Warm light irradiation apparatus, 2 ... Power supply part, 3 ... Light source part, 4 ... Irradiation trigger part, 5 ... Switching control part (light irradiation control part), 11 ... Heating pulse light, 12 ... Heating pulse light, 21 ... Heat Holding pulse light, 21a ... pulse light, 22 ... heat holding pulse light, a ... effective temperature region, b ... ineffective temperature region, c ... ineffective temperature region, T1 ... heating time zone, T2 ... heat holding time zone, t1 ... One heating section, t2 ... cooling section, t3 ... second heating section, t4 ... first heating section, t5 ... second heating section, Δt ... temperature holding time, ΔtI _L ... temperature holding time, ΔtI _S ... temperature holding time, I _L ... pulse light, I _S ... pulse light, L ... skin temperature curve, L _L ... skin temperature curve, L _S ... skin temperature curve.

Claims (5)

A thermal light irradiation device that irradiates the skin with pulsed light,
A light source unit;
A light irradiation control unit that emits pulsed light from the light source unit;
Have
The light irradiation control unit irradiates the heating pulse light that raises the skin temperature in the heating time zone from the light source unit, and the heat holding pulse light that holds the skin temperature in the heat holding time zone following the heating time zone. Irradiating from the light source unit,
Thermal light irradiation device. The average heat amount per unit time of the heat holding pulsed light in the heat holding time zone is smaller than the average heat amount per unit time of the heating pulsed light in the heating time zone,
The thermal light irradiation apparatus according to claim 1. The heating pulse light is a single pulse light composed of one pulse light,
The thermal light irradiation apparatus according to claim 1 or 2. The average intensity per unit time of the heat holding pulse light in the heat holding time zone is smaller than the average intensity per unit time of the heating pulse light in the heating time zone,
The thermal-light irradiation apparatus as described in any one of Claims 1-3. The heat retaining pulsed light is multi-pulsed light in which a plurality of pulsed light having a shorter pulse width than the heating pulsed light is repeated.
The thermal light irradiation apparatus as described in any one of Claims 1-4.

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