JP5508212B2 - Light irradiation device - Google Patents

Description

  The present invention relates to a light irradiating device, and more specifically, by irradiating light energy in the near-infrared and visible light wavelength regions to characters or designs written with decoloring or discoloring ink. The present invention relates to a light irradiation device that changes color or color.

  Conventionally, as this type of light irradiation device, for example, a device related to decoloring (decoloring device) having the following configuration has been disclosed.

  As shown in FIG. 10, a reflecting plate 81 is provided in a case 80 having an opening on the lower side, a socket 82 is provided below the reflecting plate 81, a halogen lamp 83 is attached, and a convex lens 84 is provided below the halogen lamp 83. And a pair of rollers 85 is arranged at a position facing the opening end of the case 80.

  Then, the halogen lamp 83 is turned on, and the decoloring device 86 is moved on the paper surface along the character or design to be decolored (erased) via the roller 85 so that the emitted light from the halogen lamp 83 is a convex lens. The characters, designs, etc. using the erasable colorant are erased (erased) by being irradiated through 84 (see, for example, Patent Document 1).

  Further, as shown in FIG. 11, a holding tank 91 for holding a liquid catalyst is provided in one half of a cylindrical casing 90 having both ends open, and an opening end on the half of the casing 90 extending from the holding tank 91. A hard felt element 92 protruding from the portion is provided, and connected to the other half of the cylindrical casing 90 to the concave reflector element 93 and the dry cell 94 housed in the casing 90 at the focal point of the concave reflector element 93. There is a configuration in which a halogen lamp 95 is provided and a transparent glass 96 is provided at the opening end of the other half of the casing 90.

  Thereby, the liquid catalyst is applied to the writing failure or the like due to the non-catalyst-containing recording agent made of a near-infrared decoloring dye through the hard felt element 92 protruding from the opening end portion on the one half portion side of the casing 90, and then The halogen lamp 95 provided on the other half side of the casing 90 is turned on, and the liquid catalyst is applied to the emitted light of near infrared rays through the transparent glass 96 and the hard felt element 92 protruding from the opening end. Irradiate parts that have been missed. Then, heat is generated in the irradiation part by near infrared rays, and the liquid catalyst applied to the writing defect part or the like can be easily decolored (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 5-7498 Japanese Patent No. 2996581

  By the way, the erasing apparatus disclosed in Patent Document 1 has a risk that heat generated when the halogen lamp is turned on stays in the case from use to after use to raise the case temperature, and the user may be burned. In addition, there is a problem that the power source for lighting the halogen lamp must be provided separately from the case, resulting in poor portability.

  In addition, the decoloring device disclosed in Patent Document 2 has a risk of causing burns to the user for the same reason as Patent Document 1, and the size (outer diameter) of the near-infrared irradiation part is that of a halogen lamp. Limited by size. Therefore, even if portability can be ensured, it is extremely difficult to obtain a shape and size that is excellent in usability, such as a small stationery such as a pen or an eraser.

  Therefore, the present invention was devised in view of the above-mentioned problems, and the object of the present invention is to provide an excellent portability and to accurately obtain a desired portion with a sense of use equivalent to a small stationery such as a pen, an eraser, or a stamp. An object of the present invention is to provide a light irradiation device that can surely erase or change color.

In order to solve the above-mentioned problem, the invention described in claim 1 of the present invention is characterized in that an optical path of light from a light source is provided in a cylindrical main body having an inclined surface whose one end portion gradually decreases toward the tip. A light irradiation device comprising: a light irradiation unit to be formed; a control circuit unit that performs lighting control of the light source; and a power supply unit that supplies power to the light source via the control circuit unit, wherein the light irradiation unit includes: A cylindrical discharge tube arranged so that its longitudinal direction is substantially along the inclination direction of the inclined surface of the main body, and an opening arranged so as to surround the discharge tube with the same direction as the longitudinal direction of the discharge tube as the longitudinal direction A reflector having
A transparent window made of a transparent material located in front of the opening of the reflector and fitted in the main body with the same direction as the longitudinal direction of the reflector as a longitudinal direction, and the outer surface of the transparent window protrudes from the main body It is characterized by being.

  Further, the invention described in claim 2 of the present invention is in a main body having a shape having at least one ridge line formed by planes intersecting each other, or having at least one intersection plane intersecting two planes. A light irradiation device including a light irradiation unit that forms an optical path of light from the light source, a control circuit unit that performs lighting control of the light source, and a power supply unit that supplies power to the light source via the control circuit unit. The light irradiation unit surrounds the discharge tube with a cylindrical discharge tube arranged along the ridgeline direction of the main body or the longitudinal direction of the intersecting plane and the same direction as the longitudinal direction of the discharge tube as the longitudinal direction. And a reflector having an opening arranged in the manner described above, and a transparent material that is positioned in front of the reflector opening and fitted in the ridge line portion or the intersecting plane portion of the main body with the same direction as the longitudinal direction of the reflector as the longitudinal direction. Transparency It is characterized in that it comprises a window.

  According to a third aspect of the present invention, in the second aspect, the translucent window has an outer surface protruding from the ridgeline or the intersecting plane.

  Further, the invention described in claim 4 of the present invention is provided with a fixed support portion having a frame-like support portion housing provided with a lower end opening, and movably disposed along an inner wall of the fixed support portion. A movable main body having a main body housing, a light irradiation section for forming an optical path of light from a light source in the main body housing, a control circuit section for controlling lighting of the light source, and the control circuit section The light irradiation device includes a power supply unit that supplies power to the light source, and the light irradiation unit is a cylindrical discharge in which a longitudinal direction is arranged in parallel to a surface having the lower end opening of the support housing as an outline. A reflector having a longitudinal direction that is the same as the longitudinal direction of the discharge tube and surrounding the discharge tube, with the opening directed toward the lower end opening of the support housing, and To close the opening And it is characterized in that it comprises a transparent window made of a transparent material placed on the end of the opening, the.

  The light irradiation apparatus of the present invention includes a light irradiation unit that forms an optical path of light from the light source in the main body, a control circuit unit that performs lighting control of the light source, and a power supply unit that supplies power to the light source via the control circuit unit. The light irradiating portion includes a discharge tube, a reflector surrounding the discharge tube, a translucent window positioned in front of the opening of the reflector and fitted in the main body, and an outer surface of the translucent window protruding from the main body. did.

  And, the light beam emitted from the discharge tube directly toward the light transmission window, the light beam emitted from the discharge tube and reflected by the reflector and directed toward the light transmission window are both guided through the light transmission window and irradiated to the outside. Characters, designs and the like written with the decolorizable ink or the color-changing ink are decolored or discolored by the irradiation light.

  As a result, structurally, a circuit component mounting board including a power supply unit, a control circuit unit, and a light irradiation unit in a small space of the main body and including a battery and a discharge capacitor as described below in each region. And optical components were accommodated. Therefore, it becomes possible to perform a decoloring or discoloring operation with a sense of use equivalent to that of a stationery, and has excellent portability.

  Optically, the proportion of light that contributes to decoloring or discoloration in the light emitted from the discharge tube is large, and it has become possible to perform decoloring or discoloration reliably with high light utilization efficiency.

  Furthermore, practically, the irradiation area can be positioned easily and accurately by positioning the outer surface of the projecting portion of the transparent window at an unnecessary portion such as a character or a pattern. For this reason, it is possible to accurately and reliably erase or discolor characters or designs in a desired decoloring or discoloration region.

It is explanatory drawing which showed typically the structure of the light irradiation apparatus of Example 1 concerning this invention. It is explanatory drawing which showed typically the structure of the light irradiation part of a light irradiation apparatus. It is explanatory drawing of the optical path formation by the optical system of a light irradiation part. It is explanatory drawing which shows the use condition of a light irradiation apparatus. It is explanatory drawing which showed typically the structure of the light irradiation apparatus of Example 2 concerning this invention. It is explanatory drawing which showed the partial cross section of FIG. 5 typically. It is explanatory drawing which shows the use condition of a light irradiation apparatus. It is explanatory drawing which showed typically the structure of the light irradiation apparatus of Example 3 concerning this invention. It is explanatory drawing which shows the use condition of a light irradiation apparatus. It is explanatory drawing which shows the use condition of a light irradiation apparatus. It is explanatory drawing of a prior art example. It is explanatory drawing of another prior art example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 9 (the same reference numerals are given to the same portions). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

  FIG. 1 is an explanatory diagram schematically illustrating the configuration of a small light irradiation apparatus according to the first embodiment of the present invention, FIG. 2 is an explanatory diagram schematically illustrating the configuration of a light irradiation unit of the small light irradiation device, and FIG. FIG. 4 is an explanatory view of the optical path formation by the optical system of the light irradiation unit, and FIG. 4 is an explanatory view showing a use state of the small light irradiation apparatus.

  In addition, all of the examples described below are for the light irradiation apparatus related to decoloring.

  From FIG. 1, the small light irradiation apparatus 1 of a present Example electrically controls the light irradiation part 10 regarding the irradiation of the light of the near-infrared and visible light wavelength range for decoloring, and the light irradiation part 10 And a power supply unit 30 for supplying power to the control circuit unit 20.

  The light irradiation unit 10 includes a discharge tube 11 that emits light in the near-infrared and visible light wavelength regions, a reflector 12 that directs light emitted from the discharge tube 11 in the irradiation direction (forward), and direct light from the discharge tube 11. And a transparent window 13 that transmits the reflected light emitted from the discharge tube 11 and reflected by the reflector 12 and radiates the reflected light to the outside.

  The control circuit unit 20 stores the electrical energy supplied from the power supply unit 30 during charging, and discharges the stored electrical energy during flashing to flash the discharge tube 11 with a large current, and the power supply unit 30. For the flash that controls the start of the discharge of the discharge capacitor 21 (the flash of the discharge tube 11) and the circuit component 22 constituting the boosting charge circuit that charges the discharge capacitor 21 by boosting the voltage supplied from the discharge tube 11 to the light emission voltage of the discharge tube 11 The circuit component mounting board 24 on which the switch 23 is mounted is configured.

  The power supply unit 30 includes a battery 31 that is either a primary battery or a secondary battery.

  The light irradiation unit 10, the control circuit unit 20, and the power supply unit 30 are accommodated in a cylindrical main body 40. In the main body 40, the inner diameter and the outer diameter on the front side are gradually reduced toward the tip, and the inner diameter and the outer diameter on the rear side are the same diameter and extend to the rear end. The light irradiation unit 10, the control circuit unit 20, and the power supply unit 30 are arranged in this order toward the rear side.

  The main body 40 has a rear end opening 41, and the rear end opening 41 serves as a battery exchange port for replacing the battery 31 of the power supply unit 30. An openable / closable opening / closing lid 42 that also serves as an electrical connection with the electrode of the battery 31 is screwed into the battery exchange port.

  Furthermore, the light irradiation unit 10, the control circuit unit 20, and the power supply unit 30 are electrically connected within the main body 40. Specifically, the battery 31 of the power supply unit 30 is connected to the discharge capacitor 21 of the control circuit unit 20. Are connected to the circuit component mounting board 24 to which the circuit component mounting board 24 is connected, and an output terminal (not shown) of the circuit component mounting board 24 is connected to the discharge tube 11 of the light irradiation unit 10.

  As described above, the light irradiation unit 10 (see FIG. 2) includes the discharge tube 11, the reflector 12, and the light transmission window 13, and the main body has an appropriate shape / size and an appropriate positional relationship thereof. An almost ideal optical system is formed in a small space at the tip of 40.

  Among them, the discharge tube 11 is a cylindrical glass tube in which, for example, a rare gas such as xenon, krypton, neon, argon, or the like is sealed, and a counter electrode is disposed at both ends, and between the counter electrodes, When a high voltage is applied, arc discharge occurs and light emission is started.

  The discharge tube 11 is disposed in the distal end portion of the main body 40 along the longitudinal direction of the main body 40.

  The reflector 12 is formed in a U-shaped column shape (in this embodiment, a parabolic column shape) by subjecting one flat metal member to sheet metal processing such as cutting and bending, at least of which The parabolic column surface on the peripheral surface is a light reflecting surface 12a.

  In this case, when a reflective member is used as the metal member, it is not necessary to perform a reflection treatment. However, when the metal member does not have sufficient reflectivity, aluminum deposition, chrome plating, etc. at least on the inner peripheral surface A metal reflecting film is formed to form a light reflecting surface.

  The parabolic columnar reflector 12 is arranged such that the central axis X of the discharge tube 11 is positioned on a line segment connecting the focal points of the light reflecting surface 12a composed of the parabolic column surface. That is, the reflector 12 has the longitudinal direction the same as the inclination direction of the inclined surface 40 d of the main body 40, and the discharge tube 11 is surrounded by the reflector 12.

  In front of the opening 12 b of the reflector 12, a translucent window 13 having a longitudinal direction identical to the longitudinal direction of the reflector 12 is disposed. The translucent window 13 is formed of a transparent material, and an outer surface (a surface facing outward) 13a of the translucent window 13 extends from the main body 40 to a through window 40a provided along the inclined direction of the inclined surface 40d of the main body 40. It is fitted in a protruding state.

  Therefore, the positional relationship among the discharge tube 11, the reflector 12, and the light transmission window 13 is the same in the longitudinal direction, and the discharge tube 11 is covered by the light transmission window 13 positioned in front of the reflector 12 and the opening 12 b of the reflector 12. Is in a state.

  Next, the optical path formation of the light emitted from the discharge tube 11 in the optical system composed of the discharge tube 11, the reflector 12, and the light transmitting window 13 constituting the light irradiation unit 10 will be described with reference to FIG.

  First, when power is supplied from the battery 31 of the power supply unit 30 to the boosting charging circuit on the circuit component mounting board 24, the boosting charging circuit boosts the light emission voltage of the discharge tube 11 to make the discharge capacitor 21 fully charged. . Thereafter, when the flash switch 23 is turned on, the discharge tube 11 emits light and emits flash with a large current generated by the discharge of the discharge capacitor 21.

  As shown in FIG. 3, the flashlight emitted from the discharge tube 11 has a part of the light beam L1 directly directed to the light transmission window 13 and a part of the light beam L2 is directed to the light reflection surface 12 a that is the inner peripheral surface of the reflector 12. The reflected light beam reflected by the light reflecting surface 12a becomes substantially parallel light and travels toward the translucent window 13.

  Both the direct light beam L1 from the discharge tube 11 and the reflected light beam L2 emitted from the discharge tube 11 and reflected by the light reflection surface 12a that have reached the inner surface (light incident surface) 13b of the light transmission window 13 are transmitted. The light is guided through the window 13 and the substantially parallel light is irradiated to the outside through the outer surface (light emitting surface) 13a.

  As a result, from the translucent window 13 fitted in the main body 40, most of the flash emission from the discharge tube 11 is irradiated to the outside in a substantially parallel light, so that high-power and high-density light energy is generated. It will be irradiated instantly.

  FIG. 4 shows an actual usage method of the pen-type small light irradiation apparatus 1 of the present embodiment. First, as shown in FIG. 4A, for example, a manuscript 45 on which characters and designs 46 are written with thermochromic ink (thermochromic ink that is erased by heat in this embodiment) and the small light irradiation device 1 are arranged. Prepare and bring the small light irradiation device 1 onto the document 45.

  Next, as shown in FIG. 4 (b), the outer surface 13a protruding from the main body 40 of the light transmitting window 13 of the small light irradiation device 1 is applied to the portion of the original 45 where characters and designs 46 are to be erased unnecessarily. Then, the flash switch 23 is operated. Then, flash light is irradiated from the outer surface (light emitting surface) 13a of the light-transmitting window 13, and the characters, symbols, and the like of the portions that have received light energy from the near infrared rays and visible rays are erased by heat.

  Next, as shown in FIG. 4C, by separating the small light irradiation device 1 from the original 45, an original 45 in which unnecessary portions of characters and designs 46 are erased (decolored area 47) is obtained. Can do.

  In addition, since the part which is unnecessary and is desired to be erased covers a wide range, if the entire flash cannot be completely erased by a single flash irradiation, the flash irradiation is repeated while moving the light transmission window 13 of the main body 40 little by little. Unnecessary parts can be erased.

  At this time, the compact light irradiation device 1 emits high-power and high-density light energy as described above, but the light energy irradiation is not performed continuously but intermittently by flash light irradiation. It is. Therefore, even in the discharge tube 11 that generates a large amount of heat during light emission, the light emission time associated with one flash irradiation is extremely short, so the heat generation time associated therewith is also very short, and the heat generation amount itself is very small. .

  Therefore, even when a wide range of color erasing is performed by repeating flash irradiation, the average calorific value of the discharge tube 11 over the entire color erasing time can be suppressed, and the user is exposed to a dangerous state such as a burn. There is nothing.

  As described above, the pen-type small light irradiation apparatus 1 of the present embodiment is provided with the translucent window 13 projecting from the main body 40 for irradiating the irradiation light generated by the discharge tube 11 and the reflector 12 to the outside. The irradiation area can be easily and accurately positioned by positioning the outer surface (light emitting surface) 13a of the protrusion at an unnecessary portion such as a character or a pattern. At the same time, the irradiation area covers the entire outer surface (light emitting surface) 13a of the transparent window 13. For this reason, by irradiating the original with the outer surface of the transparent window 13 being applied, it is possible to erase the characters, designs, and the like in a desired decoloring region accurately and reliably.

  In addition, the power supply unit 30, the control circuit unit 20, and the light irradiation unit 10 are provided in a small space of the pen-type main body 40, and the circuit component mounting board 24 including the battery 31 and the discharge capacitor 21 and the optical component in each region. Was stored. As a result, it is possible to perform a decoloring operation with a sense of use equivalent to that of a writing instrument, and it has excellent portability by being housed in a pen case.

  In the power supply unit 30, since either the primary battery or the secondary battery 31 is used, the power supply capacity can be reduced, which contributes to energy saving.

  In the light irradiation unit 10, a discharge tube 11 of a light source and a parabolic columnar reflector 12 positioned so as to surround the discharge tube 11 are arranged in a small space at the tip of the main body 40, and the discharge tube 11 is reflected by the reflector 12. And the transparent window 13 which is located in front of the opening 12 b of the reflector 12 and is fitted in the through window 40 a of the main body 40.

  Therefore, most of the light emitted from the discharge tube 11 is transmitted as either direct light from the discharge tube 11 or reflected light emitted from the discharge tube 11 and reflected by the light reflecting surface 12a of the reflector 12. Light that reaches the window 13 and is guided through the transparent window 13 is irradiated to the outside as substantially parallel light.

  As a result, the proportion of light that contributes to decoloring among the light emitted from the discharge tube 11 is large, and it has become possible to perform decoloring reliably with high light utilization efficiency.

  In addition, the discharge tube 11 of the light source is small and has a long life, low power consumption, and a large amount of emitted light. Therefore, since the light irradiation part 10 has both the large light emission quantity of the discharge tube 11 and the above-mentioned high light utilization efficiency, the quantity of light contributing to decoloring is remarkably increased, and the certainty of decoloring is further improved. It becomes possible.

  In addition, the reflector 12 is formed from a single flat plate-like metal member into a desired shape and size by simple sheet metal processing, and the manufacturing cost can be reduced by reducing the material cost and the processing cost. it can.

  In the pen-type small light irradiation apparatus 1 of the present embodiment, all the components including the light irradiation unit 10, the control circuit unit 20, and the power supply unit 30 are mounted in a small space of the pen-type main body 40 with high density. ing. Therefore, by utilizing this high-density mounting technology, it is possible to realize a writing / erasing function integrated device having a erasing function and a writing function using erasable ink. This makes it possible to perform both writing “writing” and erasing “erasing” with a single pen-type writing / erasing device having excellent portability.

  FIG. 5 is an explanatory view schematically showing the configuration of a small light irradiation apparatus according to Embodiment 2 of the present invention, FIG. 6 is an explanatory view schematically showing a partial cross section of FIG. 5, and FIG. 7 is a small light irradiation apparatus. It is explanatory drawing which shows the use condition of.

  5 and 6, the compact light irradiation apparatus 1 of this embodiment includes a light irradiation unit 10, a control circuit unit 20, and a power supply unit 30 in an eraser-type main body 40 having a cubic or rectangular parallelepiped shape. The transparent window 13 formed of a transparent material protrudes from the ridge line 40c to the through window 40a provided on a part of the ridge line part 40b of the main body 40 along the ridge line 40c. It is inserted in the state.

  Each structure of the light irradiation part 10, the control circuit part 20, and the power supply part 30 is the same as that of the said Example 1. FIG. Further, the light irradiation unit 10, the control circuit unit 20, and the light source unit 30 are accommodated in the main body 40, and the translucent window 13 is provided on the outer surface (outside of the translucent window 13) provided in the main body 40. The configuration in which the facing surface) 13a is fitted in a state protruding from the main body 40 is the same as that of the first embodiment.

  In particular, the light irradiating unit 10 is composed of a discharge tube 11, a reflector 12, and a light-transmitting window 13, and is almost ideal in a small space of the main body 40 due to an appropriate shape and size thereof and an appropriate positional relationship thereof. The optical tube is formed, specifically, the discharge tube 11, the reflector 12, and the translucent window 13 have the same longitudinal direction, and the discharge tube 11 is disposed in front of the reflector 12 and the opening 12 b of the reflector 12. The optical path formation by the optical system comprised by these optical components and the point which is in the positional relationship covered by the translucent window 13 located in the same manner as the first embodiment.

  In other words, the structural difference between Example 1 and Example 2 is that the shape of the main body (Example 1 is a cylindrical pen shape, whereas the shape of the main body of Example 2 is a cube or a rectangular parallelepiped. This is the difference in the shape of the eraser mold) and the arrangement of the light source, translucent window, and reflector with respect to the shape of the main body based on the difference. Since the configuration of the components such as the light source, the light transmission window, the reflector, the control circuit unit, and the power supply unit is substantially the same as that of the first embodiment, detailed description of each component will be omitted.

  FIG. 7 shows an actual method of using the eraser-type compact light irradiation device 1 of the present embodiment. First, as shown in FIG. 7A, a document 45 on which characters and designs 46 are written with decoloring ink and a small light irradiation device 1 are prepared, and the small light irradiation device 1 is brought on the document 45. .

  Next, as shown in FIG. 7B, the outer surface 13 a protruding from the main body 40 of the light transmitting window 13 of the small light irradiation device 1 is applied to a portion of the original 45 that is desired to be unerased with characters and designs 46. Then, the flash switch 23 is operated. Then, flash light is irradiated from the outer surface (light emitting surface) 13a of the light-transmitting window 13, and the characters, symbols, and the like of the portions that have received light energy from the near infrared rays and visible rays are erased by heat.

  Next, as shown in FIG. 7C, by separating the small light irradiation device 1 from the document 45, the document 45 in which unnecessary portions of characters and symbols 46 are erased (erased region 47) is obtained. Can do.

  In addition, since the part which is unnecessary and is desired to be erased covers a wide range, if the entire flash cannot be completely erased by a single flash irradiation, the flash irradiation is repeated while moving the light transmission window 13 of the main body 40 little by little. Unnecessary parts can be erased.

  However, structurally, since the width and length of the light transmission window 13 of the second embodiment can be made larger than those of the light transmission window 13 of the first embodiment, a wide area can be erased by one flash. It becomes possible.

  Therefore, the choice of whether to use the pen-type compact light irradiation device of Example 1 or the eraser-type small light irradiation device of Example 2 is convenient for carrying and convenient for use. In addition, it is determined in consideration of practicality such as the size of the irradiation region.

  As described above, the second embodiment is different from the first embodiment in the shape of the main body, but the other main parts such as the component configuration and the optical system are the same. Therefore, the operational effects of the second embodiment are the same as the operational effects according to the first embodiment.

  The shape of the main body 40 is not limited to the above-described cubic or rectangular parallelepiped shape, but a shape having at least one ridge line formed by planes that intersect each other, or a plane that intersects two planes (intersection plane). It is sufficient that the shape has at least one, and in the case of the latter shape having a crossing plane, a through window is provided along the crossing plane, and the light transmitting window is fitted into the through window. In that case, the outer surface (surface facing outward) of the transparent window does not necessarily have to protrude from the intersecting plane.

  FIG. 8 is an explanatory view schematically showing a configuration of a light irradiation apparatus according to the third embodiment of the present invention, and FIG. 9 is an explanatory view showing a use state of the light irradiation apparatus.

  From FIG. 8, the light irradiation device 1 according to the present embodiment is a stamp-type light irradiation device, and the movable main body 50 including the light irradiation unit 10, the control circuit unit 20, and the power supply unit 30 and the movement of the movable unit main body 50. The movable main body 50 is integrally fitted so as to be movable along the fixed support 60.

  In the movable main body 50, the light irradiation unit 10, the control circuit unit 20, and the power supply unit 30 are accommodated in a main body housing 51 having a lower end opening. Among them, the control circuit unit 20 is composed of a discharge capacitor 21 and a circuit component mounting board 24, and the power source unit 30 is composed of either a primary battery or a secondary battery 31. Same as 2.

  However, the configuration of the light irradiation unit 10 is that the first and second embodiments are configured by the discharge tube 11, the reflector 12, and the translucent window 13. It is composed of two optical components of a reflector 12 related to reflection of light emitted from the discharge tube 11. An optical path is formed by an optical system composed of these two optical components.

  In this case, the discharge tube 11 and the reflector 12 are the same as those in the first and second embodiments, and the positional relationship between them is the same. The control circuit unit 20 and the power supply unit 30 are accommodated in the upper portion of the main body housing 51, and the discharge tube 11 is disposed in the lower central portion in parallel with the lower end opening 61a of the support portion housing 61 of the fixed support portion 60. The light irradiation part 10 comprised with the reflector 12 is accommodated.

  The reflector 12 is arranged so that the opening 12 b faces the lower end opening 61 a of the support housing 61 of the fixed support portion 60. The reflector 12 emits direct light from the discharge tube 11 and is reflected by the reflector 12. The reflected light is irradiated from the lower end opening 61a of the support housing 61 to the outside.

  FIG. 9 shows an actual usage method of the stamp type light irradiation apparatus 1 of the present embodiment. First, as shown in FIG. 9A, for example, a manuscript 45 on which characters and designs 46 are written with thermochromic ink (in this embodiment, thermochromic ink that is erased by heat) and the light irradiation device 1 are prepared. Then, the light irradiation device 1 is taken on the document 45.

  Next, as shown in FIG. 9B, the lower end opening end portion 61b of the support portion housing 61 is placed on the document 45 so that an unnecessary portion of the character or design 46 on the document 45 to be erased is positioned at the center. The light irradiation device 1 is set in contact.

  Next, as shown in FIG. 9 (c), the translucent window 13 installed at the opening end of the reflector 12 contacts the document 45 with the movable main body 50 downward (in the direction of the document) along the fixed support portion 60. Move (down) until it touches. Then, although not shown in the figure, a flash switch built in the light irradiation device 1 operates in conjunction with the movement of the movable main body 50, and the discharge tube 11 emits light.

  Then, the flash of light from the discharge tube 11 is irradiated on the area of the document 45 covered with the transparent window 13 installed at the opening end of the reflector 12, and the portion of the original 45 that has received light energy from near infrared rays and visible rays. Characters and designs are erased by heat.

  Next, as shown in FIG. 9D, by separating the light irradiation device 1 from the document 45, it is possible to obtain a document 45 in which unnecessary portions such as characters and designs 46 are erased (erased region 47). it can.

  As described above, this embodiment is structurally difficult to reduce in size as in the first and second embodiments, but the translucent window 13 installed at the opening end of the reflector 12 directly contacts the document 45. In this state, the original 45 can be irradiated with the flash of the discharge tube 11.

  That is, the discharge tube 11 emits light in a state surrounded by the document 45 and the reflector 12, and an optical path until the light emitted from the discharge tube 11 is irradiated onto the document 45 is formed in the reflector 12 and leaks to the outside. There is almost no light.

  Therefore, most of the light emitted from the discharge tube 11 contributes to the decoloring action, and the light use efficiency is extremely high. As a result, high-power and high-density light energy can be irradiated instantaneously, and reliable decoloring processing can be realized.

  Further, by appropriately setting the shape dimension of the opening 12b of the reflector 12, it is possible to easily change the decoloring range to be decolored by one flash. Therefore, a light irradiation apparatus with a high degree of freedom in designing a desired decoloring range can be realized.

  Further, by surrounding unnecessary portions such as letters and symbols with the support portion housing 61, the irradiation region can be positioned easily and accurately. For this reason, it is possible to erase the characters, designs and the like in a desired decoloring area accurately and reliably.

  It should be noted that by forming either or both of the main body housing 51 and the support housing 61 with a transparent material, the translucent window 13 installed at the opening end portion of the reflector 12 that can be seen through the transparent member can be changed to a character or a design 46. By positioning in an unnecessary portion, the irradiation area can be positioned easily and more accurately. Therefore, it is possible to more accurately and surely erase characters and designs in a desired decoloring area.

  In any of the above-described embodiments, ink that is decolored by heat (decolorable ink) is used as the ink, but the type of ink is not limited thereto, and ink that changes color by heat (color-changing ink: toy) Etc.) are also included.

  Moreover, although the shape of the reflector 12 is a parabolic column shape, the shape of the reflector 12 is not limited to this, and may be a U-shaped column shape having a U-shaped cross section surrounding the discharge tube 11. The parabolic columnar shape is an example of a U-shaped columnar example.

DESCRIPTION OF SYMBOLS 1 ... Light irradiation apparatus 10 ... Light irradiation part 11 ... Discharge tube 12 ... Reflector 12a ... Light reflection surface (inner peripheral surface)
12b ... Opening 13 ... Translucent window 13a ... Outer surface (light exit surface)
13b ... Inner surface (light incident surface)
DESCRIPTION OF SYMBOLS 20 ... Control circuit part 21 ... Discharge capacitor 22 ... Circuit component 23 ... Flash switch 24 ... Circuit component mounting board 30 ... Power supply part 31 ... Battery 40 ... Main body 40a ... Through window 40b ... Ridge line part 40c ... Ridge line 40d ... Inclined surface 41 ... Rear end opening 42 ... Opening / closing lid 45 ... Document 46 ... Characters / patterns 47 ... Decoloring area 50 ... Movable main body 51 ... Main body housing 60 ... Fixed support part 61 ... Support part housing 61a ... Lower end opening 61b ... Lower end opening end Part

Claims (4)

A light irradiation unit that forms an optical path of light from a light source, a control circuit unit that performs lighting control of the light source, and the control A light irradiation device including a power supply unit that supplies power to the light source through a circuit unit,
The light irradiating portion is a cylindrical discharge tube disposed so that the longitudinal direction thereof is substantially along the inclination direction of the inclined surface of the main body,
A reflector having an opening disposed so as to surround the discharge tube with the same direction as the longitudinal direction of the discharge tube as a longitudinal direction;
A transparent window made of a transparent material, located in front of the opening of the reflector and fitted in the main body with the same direction as the longitudinal direction of the reflector as the longitudinal direction;
The light irradiating apparatus, wherein an outer surface of the translucent window protrudes from a main body. A light irradiation unit that forms an optical path of light from a light source in a main body having a shape having at least one ridge line formed by planes intersecting each other or having at least one intersection plane intersecting two planes; A light irradiation device including a control circuit unit that performs lighting control of the light source, and a power source unit that supplies power to the light source via the control circuit unit,
The light irradiation unit is a cylindrical discharge tube arranged along the ridgeline direction of the main body or the longitudinal direction of the intersecting plane; and
A reflector having an opening disposed so as to surround the discharge tube with the same direction as the longitudinal direction of the discharge tube as a longitudinal direction;
A translucent window made of a transparent material, which is positioned in front of the opening of the reflector and is fitted in a ridge line portion or an intersecting plane portion of the main body with the same direction as the longitudinal direction of the reflector as a longitudinal direction, is provided. Light irradiation device.   The light irradiation apparatus according to claim 2, wherein an outer surface of the translucent window protrudes from the ridge line or the intersecting plane. A fixed support portion having a frame-like support portion housing provided with a lower end opening, and a movable main body portion having a main body housing disposed movably along an inner wall of the fixed support portion;
The main body housing includes a light irradiation unit that forms an optical path of light from a light source, a control circuit unit that performs lighting control of the light source, and a power supply unit that supplies power to the light source via the control circuit unit. A light irradiation device,
The light irradiating portion has a cylindrical discharge tube whose longitudinal direction is arranged in parallel to a surface having the lower end opening of the support portion housing as an outline, and a longitudinal direction that is the same as the longitudinal direction of the discharge tube. A reflector disposed so as to surround the tube and with an opening directed toward the lower end opening of the support housing, and a transparent material installed at an end of the opening so as to close the opening of the reflector A light irradiating device comprising: a light transmissive window.

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