WO2014083774A1 - 赤外線機器 - Google Patents

赤外線機器 Download PDF

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Publication number
WO2014083774A1
WO2014083774A1 PCT/JP2013/006512 JP2013006512W WO2014083774A1 WO 2014083774 A1 WO2014083774 A1 WO 2014083774A1 JP 2013006512 W JP2013006512 W JP 2013006512W WO 2014083774 A1 WO2014083774 A1 WO 2014083774A1
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WO
WIPO (PCT)
Prior art keywords
infrared
housing
light
casing
resin
Prior art date
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PCT/JP2013/006512
Other languages
English (en)
French (fr)
Inventor
竜介 石川
陽之介 小山
誠 波多野
清三郎 川嶋
Original Assignee
株式会社デンソー
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Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to US14/436,921 priority Critical patent/US9903985B2/en
Publication of WO2014083774A1 publication Critical patent/WO2014083774A1/ja

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
    • B23K26/127—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an enclosure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/733—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/733—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B29C66/7332—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being coloured
    • B29C66/73321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being coloured both parts to be joined being coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B29K2995/0027—Transparent for light outside the visible spectrum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/747—Lightning equipment

Definitions

  • the present disclosure relates to an infrared device that performs either or both of infrared incidence and emission.
  • Infrared equipment has a housing containing an infrared emitting device or infrared receiving device.
  • the casing is provided with an infrared transmission window portion that does not transmit visible light but transmits only infrared light.
  • a visible light cut resin material is used for the window portion, and a resin material different from a housing material that requires mechanical requirements such as strength has been used (for example, Patent Document 1).
  • the window portion and the casing are made of different materials, the structure becomes complicated, such as the need for a structure for assembling both, and the number of assembling steps increases. Further, the visible light cut resin material is expensive, and the material cost also increases. In addition, even when trying to provide a dustproof / waterproof structure for the housing, it is necessary to devise measures such as inserting a packing between different types of materials or by integrally molding it, resulting in a more complicated structure and increased assembly man-hours. End up.
  • the problem of the present disclosure is to provide an infrared device that is easier to assemble than the conventional one and satisfies the conventional strength and light transmission requirements equally.
  • the infrared device of the present disclosure includes a casing and an infrared device that is accommodated in the casing and performs one or both of incident and emission of infrared rays.
  • the casing is provided with an infrared transmission window that transmits infrared light, and the infrared transmission window is made of a light-transmitting resin that transmits a near-infrared laser used for near-infrared laser welding.
  • the infrared transmitting window is used.
  • the housing body can be easily joined and fixed by near infrared laser welding.
  • the light transmitting resin and the light absorbing resin are made of a material having a common main resin material, so that the infrared transmitting window portion and the housing main body portion are fixed integrally. Not only the components but also the components are integrated into an integrated body of the same material, so that a stronger fixed state is obtained.
  • the laser welding here refers to welding using a so-called laser transmission welding method (Laser Transmission Welding).
  • a light-absorbing resin that absorbs a laser beam from a light-transmitting resin component that transmits the laser beam. It is placed on the parts, and then a pressure is applied to the surfaces to be joined to irradiate the laser beam.
  • the irradiated laser beam passes through the light-transmitting resin component and generates heat near the boundary surface of the light-absorbing resin component, and the heat melts the resin, thereby joining the light-transmitting resin component.
  • FIG. 2 is a first example of the infrared device in FIG. 1, and is a cross-sectional view schematically showing a central vertical section (AA section) in FIG. 1.
  • 2 is a second example of the infrared device of FIG. 1, and is a cross-sectional view schematically showing a central vertical cross section (AA cross section) of FIG. 1.
  • FIG. 9 is a third example of the infrared device in FIG. 1, and is a cross-sectional view schematically showing a central vertical cross section (AA cross section) in FIG. 1.
  • FIG. 5 is an explanatory diagram showing a flow of an assembling method of the infrared device in FIGS. 2 to 4 using the central vertical section (AA section) in FIG. 1;
  • FIG. 2 is a first modification of the infrared device in FIG. 1, and is a cross-sectional view schematically showing the same cut surface as the central vertical cross section (AA cross section) in FIG. 1.
  • FIG. 9 is a second modification of the infrared device in FIG. 1, and is a cross-sectional view schematically showing the same cut surface as the central vertical cross section (AA cross section) in FIG. 1.
  • FIG. 10 is a cross-sectional view schematically showing the same cut surface as the central vertical cross section (AA cross section) of FIG.
  • FIG. 9 is an explanatory diagram showing a flow of an assembling method of the infrared device of FIGS. 6 to 8 using the same cut surface as the central vertical section (AA section) of FIG.
  • the infrared device 1 of the present embodiment is an infrared device 1 in which an infrared device 2 that performs either or both of infrared incidence and emission is housed in a housing 10.
  • the infrared device 2 includes, for example, at least one of an infrared emitting device 2A, an infrared incident device 2B, and an infrared incident / exiting device 2C.
  • the housing 10 includes a housing body 11 and an infrared transmission window 12 that does not transmit visible light and transmits infrared light.
  • the housing body 11 is a remaining portion of the housing 10 excluding the infrared transmission window 12.
  • An infrared device 2 mounted on the circuit board 3 is provided at the center of the upper surface of the housing body 11.
  • An infrared transmission window 12 covers the infrared device 2 and the circuit board 3 from above and is accommodated in the housing internal space 10S, and is fixed to the housing body 11 like a lid.
  • the infrared transmission window portion 12 is disposed and fixed in contact with the outer periphery of the upper surface of the housing main body portion 11, and the infrared transmission device 2A, the infrared incidence device 2B, and the circuit board 3 are covered from above. Make a lid. And the infrared transmission window part 12 which makes a cover part is being fixed to the housing body part 11 which makes a bottom part, and the housing
  • the infrared transmission window portion 12 includes a cylindrical wall portion 12A extending upward from the outer periphery of the upper surface of the casing main body portion 11 forming the bottom portion, and a cylindrical shape. At the upper end of the wall portion 12A, a shape having an upper end portion 12B facing the housing body portion 11 with the housing internal space 10S interposed therebetween is formed.
  • the housing body 11 has a box shape having an opening in the upper center having a bottom 11B and a cylindrical wall 11A extending upward from the outer periphery of the upper surface of the bottom 11B.
  • the infrared device 2 mounted on the circuit board 3 is arranged and fixed so as to face upward.
  • the circuit board 3 is placed on the plurality of protrusions 13 protruding from the upper surface of the bottom part 11 ⁇ / b> B, and the protrusions 13 and the circuit board 3 are fastened and fixed by fastening members such as screws.
  • infrared rays pass through the infrared device 2 not only from above but also from the outer peripheral side.
  • the infrared device 2 is the infrared light emitting device 2A, infrared light can be emitted at a wide angle
  • the infrared device 2 is the infrared light incident device 2B, infrared light can be incident from a wide angle.
  • the infrared device 2 is a well-known device such as an infrared communication device represented by the IrDA (Infrared Data Association) standard, an infrared remote control device, an infrared sensor, etc. Eggplant.
  • the infrared device 2 includes an infrared emitting device 2A that emits infrared rays as shown in FIG. 2 (for example, an infrared signal transmitting device having a transmitter for transmitting infrared signals) and an infrared ray that is incident with infrared rays as shown in FIG.
  • An incident device 2B for example, an infrared signal receiving device having a receiver for receiving an infrared signal
  • an infrared incident / exit device 2C for example, both infrared signal transmission and reception
  • Infrared signal transmitting / receiving device or any other device that handles infrared light passing through the infrared transmission window 12 may be used.
  • the housing 10 is formed by joining and fixing an infrared transmission window portion 12 and a housing main body portion 11 by near infrared laser welding.
  • Near-infrared lasers for laser welding are electromagnetic waves with a wavelength of 0.7 to 2.5 ⁇ m, and YAG lasers (wavelength: 1064 nm, etc.), LD lasers (semiconductor lasers: wavelengths: 808 nm, 840 nm, 940 nm, etc.) are used. Can do.
  • the infrared device 2 is assumed to be an infrared communication device, and since the wavelength range of the infrared communication IrDA is a near infrared region (about 850 nm or more), welding with an infrared LD laser can be performed.
  • the laser output conditions in this case are determined depending on the transmittance and thickness of the light-absorbing resin or the light-transmitting resin, and a laser having an output of about several tens to 100 W can be used.
  • the light-transmitting resin is a near-infrared laser transmitting resin that transmits a near-infrared laser in the near-infrared laser welding, and may be any resin that can easily transmit infrared light, and specifically has a transmittance of 20% or more. desirable.
  • PBT resin polybutylene terephthalate resin
  • a coloring material or a filler may be contained in the main resin material.
  • a light-absorbing resin that absorbs a near-infrared laser and generates heat and melts when receiving a near-infrared laser used for near-infrared laser welding is used.
  • the light-absorbing resin is a near-infrared laser-absorbing resin that absorbs a near-infrared laser and generates heat in the near-infrared laser welding, as long as it absorbs the near-infrared laser and generates heat.
  • polybutylene terephthalate resin can be used as the main resin material in the light-absorbing resin.
  • a resin such as glass fiber, which contains a filler and has a function enhanced, may be used.
  • the predetermined laser absorption material 11p which absorbs a near-infrared laser is contained with respect to the main resin material, and it is a light absorptive resin.
  • the laser absorbing material 11p include carbon.
  • the laser absorbing material 11p for example, there is a laser absorbing dye or the like, and a pigment-based absorbing dye such as carbon black, a dye-based absorbing dye, or a combination thereof may be used. If the main resin material contains a laser-absorbing dye, coloring material, filler, etc., considering the absorption and heat generation performance of the contained laser, It is necessary to use a combination and amount that do not cause deterioration due to excessive heat generation or the like.
  • both main resin materials are thermoplastic resins.
  • the light-transmitting resin and the light-absorbing resin of the present embodiment employ a common resin material called polybutylene terephthalate resin.
  • the infrared transmitting window 12 which is a light transmitting resin that transmits a near infrared laser is a light absorbing resin that absorbs a near infrared laser, and the infrared device 2 (and the circuit board 3). Is placed on the casing body 11 already mounted.
  • the near-infrared laser 4 is irradiated on the mutual contact surfaces (surfaces to be joined) 11a and 12a. That is, the near-infrared laser 4 is applied to the contact surface 11a of the housing body 11 so as to transmit the inside of the infrared transmission window portion 12 toward the contact surface 12a. At this time, a pressure in the approaching direction is applied to the infrared transmitting window portion 12 and the housing main body portion 11.
  • the housing main body portion 11 that is a light-absorbing resin generates heat near the contact surface 11a that forms the boundary surface with the housing main body portion 11, and a melted portion 14 that melts the resin is generated by the heat. Due to the heat, the melted portion 15 is also generated in the vicinity of the contact surface 12a of the opposite infrared transmission window portion 12. And the contact surfaces 11a and 12a will be in the fixed state which mutually joined by presence of these fusion
  • the main resin material is the same resin material as the main material of the infrared transmission window part 12 and the housing body part 11, both are bonded at the molecular level. As a result, the infrared transmission window portion 12 and the housing main body portion 11 are integrated at the molecular level.
  • the casing 10 has an infrared transmission window 12 and a casing body 11 bonded and fixed so that the casing internal space 10S in which the infrared device 2 is accommodated is hermetically sealed.
  • the case body 11 may be led out from the case main body 11 for wiring for signal input / output, but the case internal space 10S including this is sealed.
  • a light transmissive resin for laser welding is used for the material of the infrared transmission window portion 12.
  • Near-infrared lasers are used for laser welding.
  • it is common for light-transmitting resin materials to be controlled for transmittance in the target wavelength band during molding. is there.
  • the wavelength band of laser welding and the wavelength band used in infrared communication overlap it is utilized that the material whose transmittance is managed will function as the infrared transmission window portion 12. It has been realized.
  • the infrared transmission window portion 12 and the housing main body portion 11 are made of the same resin material.
  • the light-transmitting resin material is subjected to strict transmittance control, it functions as a window material having stable characteristics.
  • a conventional structure in which an opening is provided in the housing body and a window portion of another member is fitted is not necessary, which contributes to a reduction in the size of the physique.
  • infrared light irradiation is required at a wide angle, as shown in FIGS. 2 to 4, it is easy to form the infrared transmission window portion 12 widely in the housing 10.
  • the housing body 11 may be a resin other than the light-absorbing resin, for example, a resin different from the light-absorbing resin, and may be fixed to the infrared transmission window 12 by a method other than laser welding. .
  • the housing 10 does not necessarily have to be in a sealed state of the housing internal space 10S.
  • both main materials may be different resins as long as welding by a near-infrared laser is possible. .
  • the infrared device 2 may be mounted on either the casing body 11 or the infrared transmission window 12.
  • the infrared transmission window portion 12 covers an opening 11 ⁇ / b> H on the infrared transmission direction side with respect to the box-shaped housing main body portion 11 having a wall portion 11 ⁇ / b> A extending upward from the infrared device 2. It may be arranged and fixed by joining. That is, as shown in FIGS. 6 to 8, the casing body 11 includes a cylindrical wall portion 11A extending downward from the outer periphery of the lower surface of the infrared transmission window portion 12 forming a plate-like lid portion, and a cylindrical shape.
  • a box shape having an upper center opening having a lower end portion 11B opposed to the infrared transmission window portion 12 with the housing internal space 10S interposed therebetween is formed, and the circuit board 3
  • the infrared device 2 mounted on is placed and fixed so as to face upward.
  • the circuit board 3 is placed on the protrusions 13 projecting from the upper surface of the lower end part 11B, and the protrusions 13 and the circuit board 3 are fastened and fixed by fastening members such as screws.
  • the method for joining and fixing the infrared transmitting window portion 12 and the housing main body portion 11 can be performed in the same manner as in FIG. 5, as shown in FIG.
  • the box-shaped housing body 11 having a low wall 11A is It is good also as a shape without wall part 11A.
  • the wall portions 11A, 12A, and 12B having the contact surfaces 11a and 11b irradiated with the near infrared laser are the outermost wall portions where the outer surface of the infrared device 1 is exposed to the outside. For this reason, it is easy to aim at the time of near-infrared laser irradiation, and there is an advantage that direct irradiation is possible.

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Abstract

　赤外線機器（１）は、筐体（１０）と、赤外線の入射及び出射のいずれかまたは双方を行う赤外線装置（２）を備える。赤外線装置（２）が筐体（１０）内に収容された赤外線機器（１）において、筐体（１０）には、可視光を非透過とし、かつ赤外光のみを透過する赤外透過窓部（１２）が設けられる。赤外透過窓部（１２）は、近赤外線レーザー溶着に用いる近赤外線レーザーを透過する光透過性樹脂と近赤外線レーザーを受けると発熱・溶融する光吸収性樹脂とのうち、光透過性樹脂からなる。

Description

赤外線機器 関連出願の相互参照
　本開示は、２０１２年１１月２８日に出願された日本出願番号２０１２－２５９６９３号に基づくもので、ここにその記載内容を援用する。
　本開示は、赤外線の入射及び出射のいずれかまたは双方を行う赤外線機器に関する。
　赤外線機器は、赤外線出射装置もしくは赤外線受光装置を内蔵する筐体を有する。筐体には、可視光を透過せず、赤外光のみを透過する赤外透過窓部が設けられる。従来、この窓部は、可視光カット樹脂材が用いられており、強度などの機械的要件が求められる筐体材料とは別の樹脂材が用いられてきた（例えば特許文献１）。
特開２００１－１０３０１０号公報
　しかしながら、上記のような従来の構成の場合、窓部と筐体が別材料で構成されているため、双方を組み付けるための構造が必要となるなど構造が複雑になり、組み付け工数も多くなる。また、可視光カット樹脂材は高価で、材料コストも増加する。さらに、筐体に防塵・防水構造をもたせようとした場合にも異種材料間にパッキンを挿入、もしくは一体成型にするなどの工夫が必要となり、より複雑な構造となって、組み付け工数も増加してしまう。
　本開示の課題は、従来よりも組み付けが容易で、かつ従来の強度や光透過要件を同等に満たす赤外線機器を提供することにある。
　上記課題を解決するために、本開示の赤外線機器は、筐体と、前記筐体内に収容され赤外線の入射及び出射のいずれかまたは双方を行う赤外線装置を有する。
　前記筐体には、赤外光を透過する赤外透過窓部が設けられ、前記赤外透過窓部は近赤外線レーザー溶着に用いる近赤外線レーザーを透過する光透過性樹脂からなる。
　上記本開示の構成によれば、筐体において、赤外透過窓部を除く筐体本体部に近赤外線レーザーを受けると発熱、溶融する光吸収性樹脂を用いるようにすれば、赤外透過窓部と筐体本体部とを近赤外線レーザー溶着により容易に接合固定することが可能になる。さらに、それら光透過性樹脂と光吸収性樹脂とを、主となる樹脂材料が共通となる材料とすることで、赤外透過窓部と筐体本体部とは、一体となるよう固定されるだけでなく、成分上も一体化して、同一材料の一体物となるから、より強固な固定状態となる。
　なお、ここでいうレーザー溶着とは、いわゆるレーザー透過溶着法（Laser Transmission Welding）を用いた溶着であり、まずは、レーザービームを透過させる光透過性樹脂部品を、レーザービームを吸収させる光吸収性樹脂部品の上に重ね、次に、接合したい面に圧力を加えてレーザービームを照射させる。これにより、照射されたレーザービームは光透過性樹脂部品を透過して、光吸収性樹脂部品の境界面付近で発熱し、その熱によって樹脂が溶融することにより、光透過性樹脂部品に対し接合する。
本開示の一実施形態である赤外線機器を示す外観を簡略的に示した外観図。 図１の赤外線機器の第一例であって、図１の中央垂直断面（Ａ－Ａ断面）を簡略的に示す断面図。 図１の赤外線機器の第二例であって、図１の中央垂直断面（Ａ－Ａ断面）を簡略的に示す断面図。 図１の赤外線機器の第三例であって、図１の中央垂直断面（Ａ－Ａ断面）を簡略的に示す断面図。 図１の中央垂直断面（Ａ－Ａ断面）を用いて、図２～４の赤外線機器の組み立て方法の流れを示す説明図。 図１の赤外線機器の第一変形例であって、図１の中央垂直断面（Ａ－Ａ断面）と同じ切断面を簡略的に示す断面図。 図１の赤外線機器の第二変形例であって、図１の中央垂直断面（Ａ－Ａ断面）と同じ切断面を簡略的に示す断面図。 図１の赤外線機器の第三変形例であって、図１の中央垂直断面（Ａ－Ａ断面）と同じ切断面を簡略的に示す断面図。 図１の中央垂直断面（Ａ－Ａ断面）と同じ切断面を用いて、図６～図８の赤外線機器の組み立て方法の流れを示す説明図。
　以下、本開示の赤外線機器の一実施形態を、図面を参照して説明する。
　図１に示すように、本実施形態の赤外線機器１は、赤外線の入射及び出射のいずれかまたは双方を行う赤外線装置２を筐体１０内に収容した赤外線機器１である。赤外線装置２は、例えば、赤外線出射装置２Ａ、赤外線入射装置２Ｂと赤外線入出射装置２Ｃの少なくとも一つからなる。
　筐体１０は、筐体本体部１１と、可視光を非透過とし、かつ赤外光を透過する赤外透過窓部１２と、を有する。筐体本体部１１は、筐体１０において赤外透過窓部１２を除いた残余部である。筐体本体部１１の上面中央に、回路基板３上に実装された赤外線装置２が設けられる。赤外透過窓部１２が、赤外線装置２と回路基板３を上方から覆って筐体内部空間１０Ｓに収容し、蓋のように、筐体本体部１１に固定される。
　図２～図４に示すように、筐体本体部１１は、上面に赤外線出射装置２Ａと赤外線入射装置２Ｂのうち少なくとも一つが回路基板３と共に設けられて筐体１０全体の底部をなす。一方、赤外透過窓部１２は、その筐体本体部１１の上面外周に当接する形で配置・固定され、赤外線出射装置２Ａ，赤外線入射装置２Ｂと回路基板３を上方から覆う筐体１０の蓋部をなす。そして、底部をなす筐体本体部１１に蓋部をなす赤外透過窓部１２が固定され、筐体１０が形成されている。
　具体的にいえば、図２～図４に示すように、赤外透過窓部１２は、底部をなす筐体本体部１１の上面外周から上方に延出する筒状壁部１２Ａと、筒状壁部１２Ａの上端にて筐体本体部１１に対し筐体内部空間１０Ｓを挟んで対向する上端部１２Ｂとを有した形状をなす。他方、筐体本体部１１は、底部１１Ｂと、底部１１Ｂの上面外周から上方に延出する筒状壁部１１Ａと、を有した上方中央が開口する箱型をなす。筐体内部空間１０Ｓの内部に、回路基板３上に実装された赤外線装置２が上方を臨む形で配置・固定される。図５に示すように、底部１１Ｂの上面から複数突出した突出部１３に対し回路基板３が載置され、ねじ等の締結部材で突出部１３と回路基板３とが締結固定される。
　これにより、赤外線装置２には、上方だけでなく外周側からも赤外線が通過する。赤外線装置２が赤外線出射装置２Ａであれば、広角度への赤外線出射が可能になるし、赤外線装置２が赤外線入射装置２Ｂであれば、広角度からの赤外線入射が可能になる。
　なお、赤外線装置２は、例えばＩｒＤＡ（Infrared Data Association）規格に代表される赤外線通信装置や、赤外線リモコン装置、赤外線センサ等の周知の装置であって筐体１０内に収容されて赤外線機器１をなす。赤外線装置２は、図２に示すような赤外線を出射する赤外線出射装置２Ａ（例えば赤外線信号を送信する送信部を有した赤外線信号送信装置等）と、図３に示すような赤外線を入射する赤外線入射装置２Ｂ（例えば赤外線信号を受信する受信部を有した赤外線信号受信装置）と、図４に示すような赤外線の出射及び入射の双方を行う赤外線入出射装置２Ｃ（例えば赤外線信号の送受信双方を行う赤外線信号送受信装置）とのいずれであってもよいし、赤外透過窓部１２を通過する赤外線を扱う装置であれば他のものでもよい。
　筐体１０は、赤外透過窓部１２と筐体本体部１１が近赤外線レーザー溶着により接合固定されてなる。レーザー溶着用の近赤外線レーザーは波長０．７～２．５μｍの電磁波であり、ＹＡＧレーザー（波長：１０６４ｎｍ等）や、ＬＤレーザー（半導体レーザー：波長：８０８ｎｍ，８４０ｎｍ，９４０ｎｍ等）等を用いることができる。赤外線装置２は赤外線通信装置を想定しており、赤外線通信ＩｒＤＡの波長域が近赤外域（約８５０ｎｍ～）であるから、赤外ＬＤレーザーでの溶着を行うことができる。この場合のレーザーの出力条件については、光吸収性樹脂や光透過性樹脂の透過率や厚みに依存して決定されるものであり、およそ数十Ｗ～１００Ｗあたりの出力のレーザーを利用できる。
　近赤外線レーザー溶着による接合固定方法について、図５を用いて説明する。
　赤外透過窓部１２の材料には、近赤外線レーザー溶着に用いる近赤外線レーザーを透過する光透過性樹脂が用いられる。光透過性樹脂は、近赤外線レーザー溶着において近赤外線レーザーが透過する近赤外線レーザー透過樹脂であって、赤外線を透過し易いものであればよく、具体的には透過率２０％以上を有することが望ましい。光透過性樹脂における主となる樹脂材料には、例えばポリブチレンテレフタレート樹脂（ＰＢＴ樹脂）等を用いることができる。また、一定レベル以上の透過性能を実現可能であれば、主となる樹脂材料に、着色材料や充填材を含有させてもよい。
　筐体本体部１１の材料には、近赤外線レーザー溶着に用いる近赤外線レーザーを受けると、近赤外線レーザーを吸収して発熱・溶融する光吸収性樹脂が用いられる。光吸収性樹脂は、近赤外線レーザー溶着において近赤外線レーザーを吸収して発熱する近赤外レーザー吸収樹脂であって、近赤外レーザーを吸収し、発熱するものであればよい。また、確実な接合のためには低そり性を有する必要もあり、少なくとも上記光透過性樹脂（赤外透過窓部１２）との間に公差として形成される隙間は０．１ｍｍ以下であることが望ましい。光吸収性樹脂における主となる樹脂材料には、例えばポリブチレンテレフタレート樹脂（ＰＢＴ樹脂）等を用いることができる。本実施形態においては基板３が固定されるという観点から、ガラスファイバーといったが充填材が含有されて機能強化された樹脂を用いてもよい。そして、その主となる樹脂材料に対し、近赤外線レーザーを吸収する予め定められレーザー吸収材料１１ｐが含有され、光吸収性樹脂となっている。レーザー吸収材料１１ｐとしてはカーボンなどを例示できる。具体的にいえば、レーザー吸収材料１１ｐとしては例えばレーザー吸収色素等があり、カーボンブラック等の顔料系吸収色素や、染料系吸収色素を用いることができるし、これらを組み合わせて用いてもよい。なお、主となる樹脂材料に、レーザー吸収色素や、着色材料、充填材等を含有させる場合には、含有物のレーザーの吸収・発熱性能を考慮して、接合時に主となる樹脂材料に対し過剰発熱等で劣化を生じさせない組み合わせと量にする必要がある。
　光透過性樹脂と光吸収性樹脂とでは、主となる樹脂材料が共に熱可塑性樹脂である。本実施形態の光透過性樹脂と光吸収性樹脂とでは、ポリブチレンテレフタレート樹脂という共通の樹脂材料を採用している。
　接合固定の際には、まずは近赤外線レーザーを透過させる光透過性樹脂である赤外透過窓部１２を、近赤外線レーザーを吸収させる光吸収性樹脂であって赤外線装置２（並びに回路基板３）が既に搭載された筐体本体部１１上に重ねて配置する。
　次に、互いの当接面（接合したい面）１１ａ，１２ａに対し近赤外線レーザー４を照射する。即ち、近赤外線レーザー４を、赤外透過窓部１２の内部を当接面１２ａに向かって透過させる形で筐体本体部１１の当接面１１ａに照射する。このとき、赤外透過窓部１２と筐体本体部１１とには互いの接近方向の圧力を加える。
　これにより、光吸収性樹脂である筐体本体部１１は、筐体本体部１１との境界面をなす当接面１１ａ付近で発熱して、その熱によって樹脂が溶融する溶融部１４が生じるとともに、その熱によって逆側の赤外透過窓部１２の当接面１２ａ付近にも溶融部１５が生じる。そして、これら溶融部１４，１５の存在と上記圧力とによって、当接面１１ａ，１２ａは互いが接合した固定状態となる。ここでは、主となる樹脂材料が赤外透過窓部１２と筐体本体部１１の主材料が同じ樹脂材料であるため、双方は分子レベルで結合する。その結果、赤外透過窓部１２と筐体本体部１１とは、分子レベルで一体化された状態となる。
　なお、筐体１０は、赤外線装置２が収容される筐体内部空間１０Ｓが密閉状態となるよう、赤外透過窓部１２と筐体本体部１１とが接合固定されている。筐体本体部１１からは、信号の入出力を行うための配線が外に引き出される導出される場合もあるが、これも含めて筐体内部空間１０Ｓは密閉状態となっている。
　このように、赤外透過窓部１２の材料に、レーザー溶着用の光透過性樹脂を用いる。レーザー溶着には近赤外レーザーが用いられるが、こうした場合、レーザー溶着を確実に行うために、光透過性樹脂材料は、その成型時に対象波長帯の透過率が管理されるのが一般的である。本開示では、このレーザー溶着の波長帯と赤外線通信で用いる波長帯が重なることに着目して、この透過率管理された材料が赤外透過窓部１２として機能するであろうことを利用して実現したものである。
　また、本実施形態においては、赤外透過窓部１２と筐体本体部１１とが主となる樹脂材料を同一材料にして構成されている。上述したように、光透過性樹脂材料は厳しい透過率管理がされるため、安定した特性をもつ窓材として機能する。一方、従来のように筐体本体に開口を設けて別部材の窓部を嵌め込む構造が不要となるため、体格の小型化にも貢献する。特に広角に赤外光照射が必要な場合、図２～図４に示すように、筐体１０に広く赤外透過窓部１２を形成することも容易である。従来の場合は、広い窓部を形成するためには、高価な材料で別部材の窓部を別途成型する必要があるというデメリットがあった。さらに、本実施形態では、赤外透過窓部１２と筐体本体部１１との間に境界がなくなる形で、レーザー溶着により樹脂同士の溶着が確実になされるため、筐体１０を密閉構造とすることが可能である。これにより、特別な部品や構造を必要とすることなく、防塵・防水機能を付与することができる。
　以上、本開示の一実施形態を説明したが、これはあくまでも例示にすぎず、本開示はこれに限定されるものではない。例えば上記実施形態において一部の構成要件を省略する、さらには他の構成要件を追加する等、当業者の知識に基づく種々の変更が可能である。
　筐体本体部１１は、光吸収性樹脂以外の樹脂、例えば光吸収性樹脂とは異なる樹脂であってもよく、赤外透過窓部１２に対しレーザー溶着以外の方法で固定されていてもよい。
　また、筐体１０は、必ずしも筐体内部空間１０Ｓが密閉状態となるものでなくてもよい。
　筐体本体部１１を光吸収性樹脂、赤外透過窓部１２を光透過性樹脂とする場合、近赤外線レーザーによる溶着が可能であるならば、双方の主材料が異なる樹脂であってもよい。
　赤外線装置２は、筐体本体部１１と赤外透過窓部１２とのいずれに搭載されていてもよい。
　赤外透過窓部１２は、図９に示すように、赤外線装置２よりも上方に延出する壁部１１Ａを有する箱型の筐体本体部１１に対し赤外線の通過方向側の開口１１Ｈを蓋する形で配置され接合固定されてもよい。つまり、図６～図８に示すように、筐体本体部１１は、板状の蓋部をなす赤外透過窓部１２の下面外周から下方に延出する筒状壁部１１Ａと、筒状壁部１１Ａの下端にて赤外透過窓部１２に対し筐体内部空間１０Ｓを挟んで対向する下端部１１Ｂとを有した上方中央が開口する箱型をなし、その内部に、回路基板３上に実装された赤外線装置２が上方を臨むように配置・固定される。下端部１１Ｂの上面から複数突出した突出部１３に対し回路基板３が載置され、ねじ等の締結部材で突出部１３と回路基板３とが締結固定される。この場合、筐体本体部１１を赤外線透過性の低い光吸収性樹脂を用いることで、赤外線装置２を外周側で取り囲む壁部１１Ａからの赤外線通過がほぼ阻止されるようにすることができる。これにより、狭い照射角度範囲の一定の指向性を有した赤外線出射や赤外線入射が可能になる。
　なお、図６～図８の実施形態においても、赤外透過窓部１２と筐体本体部１１との接合固定方法は、図９に示すように、図５と同様にして行うことができる。
　なお、赤外透過窓部１２を板状とする図６～図８の実施形態と同様、図２～図４の実施形態においても、壁部１１Ａが低い箱型の筐体本体部１１を、壁部１１Ａの無い形状としてもよい。
　また、全ての実施形態において、近赤外線レーザーが照射される当接面１１ａ，１１ｂを有する壁部１１Ａ，１２Ａ，１２Ｂは、赤外線機器１における外表面が外部に露出する最外位置の壁部であることにより、近赤外線レーザーの照射時に狙いが定め易く、直接照射できる利点がある。

Claims (6)

  1. 　筐体（１０）と、
    　筐体（１０）内に収容され、赤外線の入射及び出射のいずれかまたは双方を行う赤外線装置（２）を備える赤外線機器（１）であって、
    　前記筐体（１０）には、赤外光を透過する赤外透過窓部（１２）が設けられ、
    　前記赤外透過窓部（１２）は、近赤外線レーザー溶着に用いる近赤外線レーザーを透過する光透過性樹脂からなる赤外線機器。
  2. 　前記筐体（１０）は、さらに筐体本体部（１１）を有し、
    　前記筐体本体部（１１）は、前記近赤外線レーザーを受けると発熱して溶融する光吸収性樹脂からなり、
    　前記赤外透過窓部（１２）と前記筐体本体部（１１）とが前記近赤外線レーザー溶着により互いに接合固定されている請求項１に記載の赤外線機器。
  3. 　前記筐体（１０）は、前記赤外線装置（２）が収容される筐体内部空間（１０Ｓ）を有し、
    　前記筐体内部空間（１０Ｓ）が密閉状態となるよう、前記赤外透過窓部（１２）と前記筐体本体部（１１）とが接合固定されている請求項２に記載の赤外線機器。
  4. 　前記光透過性樹脂と前記光吸収性樹脂とは主となる樹脂材料が共通である請求項２又は請求項３に記載の赤外線機器。
  5. 　前記赤外線装置（２）は前記筐体本体部（１１）に搭載され、
    　前記赤外透過窓部（１２）は、前記赤外線装置（２）が前記筐体（１０）の筐体内部空間（１０Ｓ）に収容されるよう前記筐体本体部（１１）に接合固定される請求項２ないし請求項４のいずれか１項に記載の赤外線機器。
  6. 　前記赤外線装置（２）は、前記筐体（１０）の底部を形成する前記筐体本体部（１１）の上面に搭載され、
    　前記赤外透過窓部（１２）は、
    　　前記筐体本体部（１１）の外周から上方に延出する筒状壁部（１２Ａ）と、
    　　前記筒状壁部（１２Ａ）の上端に接合され、前記筐体本体部（１１）に前記筐体（１０）の筐体内部空間（１０Ｓ）を挟んで対向する上端部（１２Ｂ）と、を有し
    　前記赤外透過窓部（１２）は、前記筐体（１０）の蓋部をなす請求項２ないし請求項４のいずれか１項に記載の赤外線機器。
PCT/JP2013/006512 2012-11-28 2013-11-05 赤外線機器 WO2014083774A1 (ja)

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JPH077015U (ja) * 1993-06-30 1995-01-31 セイテック株式会社 リモコンスイッチアダプタ装置
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