WO2013047313A1 - Photoirradiation device - Google Patents

Photoirradiation device Download PDF

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Publication number
WO2013047313A1
WO2013047313A1 PCT/JP2012/074029 JP2012074029W WO2013047313A1 WO 2013047313 A1 WO2013047313 A1 WO 2013047313A1 JP 2012074029 W JP2012074029 W JP 2012074029W WO 2013047313 A1 WO2013047313 A1 WO 2013047313A1
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WO
WIPO (PCT)
Prior art keywords
led mounting
mounting substrate
locking portion
locking
led
Prior art date
Application number
PCT/JP2012/074029
Other languages
French (fr)
Japanese (ja)
Inventor
忠洋 松下
Original Assignee
シーシーエス株式会社
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Filing date
Publication date
Application filed by シーシーエス株式会社 filed Critical シーシーエス株式会社
Publication of WO2013047313A1 publication Critical patent/WO2013047313A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a light irradiation apparatus having an LED mounting substrate in which LEDs are mounted on an elastically deformable substrate.
  • this type of light irradiation apparatus includes an LED mounting substrate having an LED-mounted substrate having an elastically deformable long shape and a casing for housing the LED mounting substrate. is there.
  • this light irradiation device two locking portions to which the LED mounting substrate is locked are provided in the casing, and the distance between the two locking portions is the dimension between the side portions of the LED mounting substrate.
  • the LED mounting substrate is configured to be locked to the locking portion in an elastically deformed curved state.
  • an LED mounting board is accommodated in a casing by sliding the side part of the LED mounting board made into the curved state by elastic deformation to an engaging part by sliding in an axial direction. .
  • the present inventor arranges the LED mounting board on the locking portion without sliding the side portion of the LED mounting substrate in the axial direction with respect to the locking portion. It is considered that the LED mounting substrate is locked to the locking portion by pushing toward the locking portion in the thickness direction.
  • the LED mounting substrate has a long rectangular shape, when the LED mounting substrate is pushed in the thickness direction toward the locking portion, the side portion of the LED mounting substrate is easily displaced with respect to the locking portion. This shift causes a problem that the side portion of the LED mounting substrate is distorted and wrinkles are generated. Then, due to distortion or wrinkles on the side portion of the LED mounting substrate, the side portion of the LED mounting substrate is not securely locked to the locking portion, and the LED mounting substrate is not sufficiently fixed, and the LED is not attached to the casing. There arises a problem that the mounting substrate is displaced. Moreover, the problem that the optical axis of LED will shift
  • the present invention has been made to solve the above-mentioned problems all at once, and its main intended problem is to reduce distortion or wrinkles of the LED mounting substrate that occurs when the LED mounting substrate is attached to the base member. To do.
  • the light irradiation apparatus includes an LED mounting substrate having an elastically deformable long shape on which a plurality of LEDs are mounted, and a base member to which the LED mounting substrate is attached.
  • the first mounting portion and the second locking portion provided opposite to each other, which are locked to the respective side portions on both sides in the width direction perpendicular to the longitudinal direction of the LED mounting substrate, In the curved state in which the separation dimension between the engagement part and the second engagement part is set smaller than the dimension between the side parts of the LED mounting board, and the LED mounting board is elastically deformed and curved in the width direction.
  • a notch or a recess that is configured to be locked to the first locking portion and the second locking portion, and in which the LED mounting substrate is formed in each side portion toward the inner side in the width direction. It is characterized by having.
  • each side part of an LED mounting board is used as each latching
  • the part which receives a distortion influence from a distortion generation part can be reduced, the number of LED which produces an optical axis offset by the said distortion can be reduced. Furthermore, since the part which receives a distortion influence from a distortion generation part can be reduced, the appearance of the state which latched the LED mounting board to the latching
  • each of the side portions of the LED mounting substrate is configured such that the portions locked to the respective locking portions are partitioned by the cuts or the recesses, so that only the strain generating sections including the strain generating portions are each It can be removed from the locking part, and there is no need to remove the side part adjacent to the distortion generating section already locked by the locking part from the locking part, thus preventing twice the trouble of mounting the LED mounting board.
  • the workability of mounting can be improved.
  • the portion affected by the distortion can be reduced from the distortion generating portion in the LED mounting substrate, so that the reflection of light from the LED can be reduced. Not only can the amount of light be increased, but also reflection unevenness can be reduced.
  • each side part of the LED mounting board at a position sandwiching the LED is locked to each locking part. It is desirable. For this reason, it is desirable that the notch or the recess is formed between the LEDs adjacent to each other along the longitudinal direction of the LED mounting substrate in each of the side portions. In particular, in order to reduce the number of LEDs affected by the distortion of the LED mounting substrate, the notches or the recesses are formed between the adjacent LEDs along the longitudinal direction of the LED mounting substrate at each side portion. It is desirable to be formed. If this is the case, each of the side portions of the LED mounting substrate is formed so that the locked portion that is locked to the locking portion sandwiches each LED, so that the LED is reliably positioned and fixed with respect to the base member. can do.
  • the notch or the recess is formed at an intermediate position between the LEDs adjacent to each other along the longitudinal direction of the LED mounting substrate. Thereby, it becomes the structure by which LED is arrange
  • the interval between the LEDs adjacent to each other along the longitudinal direction of the LED mounting substrate, and the LED mounting substrate is desirable that the intervals between the notches or recesses adjacent to each other along the longitudinal direction are substantially the same.
  • the notch or recess formed on one side and the notch or recess formed on the other side It is desirable that they are formed at substantially the same position in the longitudinal direction of the LED mounting substrate. If this is the case, the cuts or recesses formed on each side of the LED mounting substrate are symmetrical, so that only the strain-generating portion can be removed by simply pulling the LED mounting substrate in the thickness direction.
  • the light irradiating device includes an intermediate body having thermal conductivity disposed between a portion between the locking portions of the base member and the back surface of the LED mounting region of the LED mounting substrate or the vicinity thereof, In a curved state in which the LED mounting substrate is locked to the first locking portion and the second locking portion, the LED mounting substrate presses the base member via the intermediate body due to elastic deformation of the LED mounting substrate. It is desirable to be configured to do so. If it is this, since the LED mounting board
  • the light irradiation device moves the LED mounting board in the thickness direction from the non-locking state in which the LED mounting board is not locked to the first locking part and the second locking part.
  • the LED mounting substrate is configured to be locked to the first locking portion and the second locking portion by being pushed into the locking portion and the second locking portion. It is desirable to provide a guide surface for positioning the LED mounting substrate in a stopped state with respect to the first locking portion and the second locking portion.
  • the guide surface is provided on the side opposite to the pushing direction with respect to the first locking portion and the second locking portion. In this case, when the LED mounting substrate is locked to the locking portion, the LED mounting substrate can be positioned with respect to the locking portion, and the LED mounting substrate positioned by the guide surface is pressed in the thickness direction. As a result, the LED mounting substrate can be fixed to the locking portion, and the mounting operation of the LED mounting substrate can be further simplified.
  • the above-described light irradiation apparatus has an LED mounting substrate having a long shape, but the same effect can be obtained even if the LED mounting substrate has a partial annular shape or an annular shape. That is, the light irradiation device according to the present invention includes an LED mounting substrate having a partially annular shape or an annular shape on which a plurality of LEDs are mounted, and a base member to which the LED mounting substrate is attached.
  • the base member has a first locking portion and a second locking portion that are provided opposite to each other and that are locked to each side portion on both sides in the width direction perpendicular to the circumferential direction of the LED mounting substrate.
  • the distance between the first locking portion and the second locking portion is set to be smaller than the dimension between the side portions of the LED mounting substrate, and the LED mounting substrate is elastically deformed to have a width.
  • the LED mounting substrate is configured to be locked to the first locking portion and the second locking portion in a curved state that is curved in the direction, and the LED mounting board faces inward in the width direction at each side portion. It has the notch
  • the strained portion can be easily removed when distortion occurs. it can.
  • the perspective view which shows the structure of the one end side of the light irradiation apparatus in one Embodiment of this invention. Sectional drawing perpendicular
  • the top view which shows the structure of the LED mounting board in the embodiment. Sectional drawing of the base member which shows the latching state of the board
  • the top view which shows the modification of a LED mounting substrate. The figure which shows the function of a recessed part typically.
  • the top view which shows the modification of a LED mounting substrate.
  • the light irradiation apparatus 100 is a line type that can be used for indoor / outdoor general illumination, inspection illumination, plant growth illumination, or the like, as shown in FIGS. 1 and 2.
  • a cylindrical body 1 having a right cylindrical shape, an LED mounting board 2 accommodated in the cylindrical body 1, a base member 3 for holding the LED mounting board 2 in the cylindrical body 1, and the cylindrical body 1 And a base member 4 that is attached to both ends in the axial direction and feeds power to the LED mounting substrate 2.
  • the cylindrical body 1 is made of, for example, glass and has a light-transmitting property, and has a substantially straight cylindrical shape having openings at both ends in the axial direction. After the LED mounting substrate 2 and the base member 3 are accommodated in the openings at both ends, the base members 4 are respectively attached.
  • the LED mounting board 2 is a so-called printed board on which wiring is printed in advance, and a plurality of LEDs 5 are mounted on the surface thereof as shown in FIG.
  • a type that is very thin, for example, 0.5 mm or less, and is elastically deformed and curved is used.
  • the LED mounting substrate 2 has a substantially long rectangular flat plate shape in a natural state where no external force is applied, and the longitudinal direction (longitudinal direction) dimension is the length of the housing space of the cylindrical body 1. It is slightly smaller than the dimension in the direction.
  • at least almost the entire surface of the LED mounting substrate 2 on the LED mounting side is mirrored by applying a reflective coating or the like to improve the light reflectance.
  • a white paint may be applied to form a white surface.
  • the LED 5 is, for example, a surface-mounted high-luminance type chip LED that emits white light.
  • an LED element (not shown) that emits near-ultraviolet light and wavelength-converted light emitted from the LED element are white light.
  • the base member 3 is accommodated in the cylindrical body 1 while holding the LED mounting substrate 2.
  • the base member 3 has a substantially partial cylindrical shape, and is made of a metal such as aluminum in which a linear bottomed groove-like accommodation space 3 a is formed.
  • a partial cylinder shape is an annular shape with a part missing when the cylinder is viewed from the end face.
  • the outer peripheral surface has a substantially partial arc shape along the inner peripheral surface of the cylindrical body 1.
  • the length in the longitudinal direction of the base member 3 is slightly smaller than the length in the longitudinal direction of the housing space of the cylindrical body 1 and is substantially the same as the length in the longitudinal direction of the LED mounting substrate 2.
  • locking part 7 are each provided in the inner surface of the edge part parallel to the longitudinal direction of the base member 3, ie, the inner edge part of the opening 3b of the base member 3, These latching parts
  • the side edge portions 2a and 2b parallel to the longitudinal direction of the LED mounting substrate 2 are engaged with the LED mounting substrate 6 and 7, respectively.
  • the locking portions 6 and 7 have a ridge shape extending from the inner edge portions of the base member 3 to face each other.
  • the locking portions 6 and 7 or the locking portions 6 and 7 7 and the inner peripheral surface 3 c of the base member 3 are engaged with the side portions 2 a and 2 b of the LED mounting substrate 2.
  • a protrusion-like intercalating body 8 extending from the center in the width direction on the inner peripheral surface 3c of the base member 3 from end to end along the longitudinal direction is integrally protruded.
  • the protruding end surface 8a (hereinafter, also referred to as the front end surface 8a) of the intermediate body 8 is a plane parallel to the opening surface of the base member 3, and the width thereof is the same as or larger than the width of the LED 5. It is set to.
  • the width dimension of the opening 3 b of the base member 3, that is, the dimension between the locking portions 6 and 7 is set smaller than the dimension in the width direction of the LED mounting substrate 2. Therefore, in a state where the LED mounting substrate 2 is locked to the locking portions 6 and 7, the LED mounting substrate 2 is curved in the width direction toward the accommodation space 3a side (intervening body 8 side).
  • the back surface 2c of the LED mounting region D1 in the LED mounting substrate 2 and the tip surface 8a of the interposition body 8 are configured to be in press contact. In this way, the LED mounting substrate 2 is supported and fixed only at three places, that is, in cross-sectional view, both side portions 2a and 2b and the central portion (the back surface 2c of the LED mounting region D1).
  • the LED mounting substrate 2 is disposed on the upper side that is the opening side (opposite to the pushing direction) from the first locking portion 6 and the second locking portion 7. Is formed with guide surfaces 9a and 9b for positioning them with respect to the locking portions 6 and 7.
  • the guide surfaces 9 a and 9 b are formed opposite to each other on the inner surface of the edge parallel to the longitudinal direction of the base member 3, similarly to the first locking portion 6 and the second locking portion 7.
  • the dimension between the guide surfaces 9a and 9b is set such that the LED mounting board 2 fits with a slight backlash, and the LED mounting board 2 is disposed between the guide surfaces 9a and 9b.
  • the central axis along the longitudinal direction of the LED mounting substrate 2 is positioned at the center position of the first locking portion 6 and the second locking portion 7.
  • the LED mounting substrate 2 is placed on the locking portions 6 and 7 of the base member 3 as shown in FIG. 5. At this time, the LED mounting substrate 2 is positioned by the guide surfaces 9a and 9b. And the LED mounting board 2 is the 1st locking part 6 in the thickness direction in the non-locking state in which the LED mounting board 2 is not locked to the first locking part 6 and the second locking part 7. And it pushes in toward the 2nd latching
  • the side portions 2a and 2b are locked to the first locking portion 6 and the second locking portion 7 (see FIG. 4). Thereafter, the base member 3 is inserted and accommodated in the cylindrical body 1 in the axial direction, and then the openings at both axial ends of the cylindrical body 1 are closed by the base member 4.
  • the base member 4 has a connector that is electrically connected to a connection terminal provided at an end of the LED mounting substrate 2, and closes the opening of the cylindrical body 1, and at the same time, attaches the base member 3 to the cylindrical body 1. It is configured to be positioned and connected to a connection terminal provided at an end of the LED mounting substrate 2.
  • the back surface 2c of the LED mounting region D1 is reliably pressed against the interposition body 8 by the elastic force of the LED mounting substrate 2 and comes into surface contact. It is possible to efficiently escape to the base member 3 through the intermediate body 8.
  • the bendable substrate 2 is generally formed of a thin member, the influence of heat transfer inhibition due to its thickness can be reduced, and in that respect, heat transfer to the interposition body 8 is efficiently performed. Become.
  • the LED mounting substrate 2 is brought into contact with the interposition body 8, screw fastening or a special jig is not required, and the LED mounting substrate 2 is simply attached to the first locking portion 6 and the second locking portion 7. As it is only locked, assembly is greatly simplified.
  • the LED mounting substrate 2 is curved and its surface functions as a concave reflecting surface, the directivity of light from the chip-type LED 5 can be improved and loss light can be reduced without providing a special reflecting member. The effect that it can be made is also acquired.
  • the LED mounting substrate 2 of the present embodiment has a plurality of partial arc-shaped concave portions 21 formed in the side portions 2 a and 2 b toward the inner side in the width direction.
  • the side portions 2a and 2b have an uneven structure.
  • the plurality of recesses 21 have the same shape, and each recess 21 is between the LEDs 5 adjacent to each other along the longitudinal direction of the LED mounting substrate 2 at each of the side portions 2 a and 2 b. Is formed. Specifically, the recess 21 formed in one side 2a and the recess 21 formed in the other side 2b are formed at substantially the same position in the longitudinal direction of the LED mounting substrate 2.
  • the LED mounting substrate 2 is symmetrical with respect to the central axis in plan view.
  • the interval (pitch) L1 between the LEDs 5 adjacent to each other along the longitudinal direction of the LED mounting substrate 2 and the interval (pitch) L2 between the recesses 21 adjacent to each other along the longitudinal direction of the LED mounting substrate 2 are substantially the same. It is formed as follows.
  • the recess 21 is formed at an intermediate position between the LEDs 5 adjacent to each other along the longitudinal direction of the LED mounting substrate 2.
  • the LEDs 5 are arranged so as to be partitioned by the recesses 21 formed in the side portions 2a and 2b, and the regions partitioned by the recesses 21 One LED 5 is included in each (hereinafter referred to as a partitioned area).
  • a partitioned area the boundary of each partition area
  • the LED 5 can be reliably positioned, and the back surface 2 c of the LED mounting substrate 2 can be reliably adhered to the distal end surface 8 a of the interposed body 8.
  • the LEDs 5 are arranged one by one in the partition area, even if distortion occurs in a certain partition area, the distortion effect does not reach the partition area adjacent to the partition area.
  • the partition area to be held can be reliably locked to the locking portions 6 and 7.
  • the number of LEDs 5 affected by distortion can be reduced.
  • the concave portion 21 is formed within a range of a portion where the LED mounting substrate 2 is likely to be distorted, that is, a portion that is curved in the width direction of the LED mounting substrate 2 (portions D2 on both sides of the LED mounting region D1). (See FIG. 3). That is, the depth dimension of the recess 21 in the width direction is such that it does not reach the LED mounting region D1, and is set to be equal to or less than the width dimension of the portion D2 curved in the width direction.
  • a U-shape (rectangular shape) other than partial arc shape or partial elliptical arc shape may be sufficient (refer FIG. 6 (A)), or V shape (FIG. 6). (See (B)) or a U-shape (see FIG. 6C).
  • Each partition region (2A to 2D in FIG. 7) partitioned by the concave portion 21 of the LED mounting substrate 2 is locked one by one from the longitudinal direction of the LED mounting substrate 2 (for example, the partition region 2A) one by one.
  • the LED mounting substrate 2 is locked to the locking portions 6 and 7 and attached to the base member 3.
  • the partition area 2B when the distortion is corrected, the partition area 2B is present due to the presence of the concave portion 21 between the partition area 2B and the partition area 2A that is already locked. Only can be removed from the locking part. After correcting the distortion of the removed partitioned area 2B, the partitioned area 2B is again locked by the locking portions 6 and 7. Thereby, distortion can be corrected only by the operation
  • the concave portions 21 formed toward the inner side in the width direction are formed in the side portions 2a and 2b of the LED mounting substrate 2, and thus the LED Even if distortion occurs when the side portions 2a and 2b of the mounting substrate 2 are locked to the locking portions 6 and 7, they are absorbed by the concave portion 21 adjacent to the distortion generation portion (partition region 2B in FIG. 7). Is done. Thereby, the influence which it has on the side part 2a, 2b of other (partition area
  • the distortion generation part can be reduced, the optical axis deviation of the LED 5 caused by the distortion can be reduced, and the appearance of the state in which the LED mounting substrate 2 is locked to the locking portions 6 and 7 is also achieved. Can be better.
  • the portion affected by the distortion from the distortion generation portion in the LED mounting substrate 2 can be reduced, not only the amount of light reflected from the LED 5 can be increased, but also the reflection unevenness can be reduced.
  • the present invention is not limited to the above embodiment.
  • the concave portions 21 are formed in the side portions 2a and 2b of the LED mounting substrate 2.
  • FIG. it is possible to obtain the same effect as that of the above-described embodiment simply by making the cut 22 in the LED mounting substrate 2, and the light irradiation device 100 can be easily manufactured.
  • the opposing sides of the adjacent partition areas are substantially in contact with or close to each other with the notch 22 interposed therebetween, when one partition area is distorted, the opposing side of the one partition area is the other partition area. There is a risk of touching the opposite side of the.
  • the opposing side of a division area is spaced apart, there is no such worry.
  • a recess 21 or a cut 22 may be formed for each of the plurality of LEDs 5 along the longitudinal direction.
  • FIG. 9A shows a case where every two LEDs are formed.
  • the recesses 21 formed on the side portions 2a and 2b may be formed alternately so as not to face each other.
  • the light irradiating device is configured such that the base member is accommodated in the cylindrical body.
  • the light irradiating device is configured by attaching a transparent or light diffusing cover to the opening of the base member. You may do it.
  • the base member was integrally formed with an intermediate body having thermal conductivity.
  • the thermal conductive member of another member as an intermediate body, the back surface of the LED mounting substrate and the inner peripheral surface of the base member It may be arranged between them.
  • substrate 2 may contact the internal peripheral surface 3c of the base member 3, without having an interposition body.
  • an LED arrangement mode on the LED mounting substrate a single-row arrangement or a multi-row arrangement may be employed along the longitudinal direction as in the above-described embodiment.
  • the light irradiation apparatus of the above embodiment is a line type, but may be a ring type.
  • the LED mounting substrate 2 has a partial annular shape or an annular shape.
  • the LED mounting substrate 2 is formed with recesses 21 or cuts on inner side portions and outer side portions on both sides in the width direction perpendicular to the circumferential direction of the LED mounting substrate 2. And it attaches by pushing the LED mounting substrate 2 in the cyclic
  • the said embodiment demonstrated the aspect in which one LED mounting board was attached to one base member, it comprised so that a some LED mounting board might be attached to one base member so that it may continue in a longitudinal direction. You may do it. Furthermore, a plurality of base members may be accommodated and disposed in one cylindrical body so as to be continuous in the longitudinal direction.
  • the light irradiation device of the present invention it is possible to reduce the distortion of the LED mounting substrate that occurs when the LED mounting substrate is attached to the base member.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

The present invention reduces warping in an LED mounting substrate when attaching the LED mounting substrate to a base member. The base member (3) has a first engaging part (6) and a second engaging part (7) for engaging each side part (2a, 2b) of the LED mounting substrate (2), and positioned so as to face one another. The dimension of the distance by which the first engaging part (6) and the second engaging part (7) are separated is set to be less than the dimension of the distance between the side parts of the LED mounting substrate (2). The configuration is such that the first engaging part (6) and the second engaging part (7) hold the LED mounting substrate in an elastically deformed curved state. The LED mounting substrate (2) has recesses (21) formed toward the inside widthwise direction in each side part (2a, 2b).

Description

光照射装置Light irradiation device
　本発明は、弾性変形可能な基板にＬＥＤを搭載したＬＥＤ搭載基板を有する光照射装置に関するものである。 The present invention relates to a light irradiation apparatus having an LED mounting substrate in which LEDs are mounted on an elastically deformable substrate.
　この種の光照射装置には、特許文献１に示すように、ＬＥＤが搭載された弾性変形可能な長尺形状をなすＬＥＤ搭載基板と、このＬＥＤ搭載基板を収容するケーシングとを備えたものがある。具体的にこの光照射装置は、ＬＥＤ搭載基板が係止される２つの係止部がケーシングに設けられており、この２つの係止部間の離間寸法がＬＥＤ搭載基板の側辺部間寸法よりも小さく設定され、ＬＥＤ搭載基板が弾性変形した湾曲状態で前記係止部に係止されるように構成されている。そして、この光照射装置では、弾性変形により湾曲状態とされたＬＥＤ搭載基板の側辺部を係止部に軸方向にスライドさせて係止することにより、ＬＥＤ搭載基板がケーシング内に収容される。 As shown in Patent Document 1, this type of light irradiation apparatus includes an LED mounting substrate having an LED-mounted substrate having an elastically deformable long shape and a casing for housing the LED mounting substrate. is there. Specifically, in this light irradiation device, two locking portions to which the LED mounting substrate is locked are provided in the casing, and the distance between the two locking portions is the dimension between the side portions of the LED mounting substrate. The LED mounting substrate is configured to be locked to the locking portion in an elastically deformed curved state. And in this light irradiation apparatus, an LED mounting board is accommodated in a casing by sliding the side part of the LED mounting board made into the curved state by elastic deformation to an engaging part by sliding in an axial direction. .
　ところが、ＬＥＤ搭載基板の側辺部を係止部に軸方向にスライドさせて係止するものでは、ＬＥＤ搭載基板の側辺部を係止部にスライドさせるに連れてそれらの摩擦による抵抗が大きくなり、組み立て作業が極めて困難になるという問題がある。特に、ＬＥＤ搭載基板が弾性変形可能な薄い基板からなる場合には、スライド挿入する際に前記摩擦抵抗によりＬＥＤ搭載基板がケーシング外部で屈曲して挿入しにくくなり、上記の問題が一層顕著となる。 However, in the case where the side portion of the LED mounting board is slid in the locking portion in the axial direction, the resistance due to friction increases as the side portion of the LED mounting board is slid to the locking portion. Therefore, there is a problem that assembly work becomes extremely difficult. In particular, when the LED mounting substrate is made of a thin substrate that can be elastically deformed, it becomes difficult to insert the LED mounting substrate by bending outside the casing due to the frictional resistance at the time of sliding insertion, and the above problem becomes more remarkable. .
特開２０１１－１００７０７号公報JP 2011-100707 A
　このようなことから本願発明者は、ＬＥＤ搭載基板の側辺部を係止部に対して軸方向にスライドさせることなく、ＬＥＤ搭載基板を係止部上に配置して、当該ＬＥＤ搭載基板をその厚み方向に係止部に向かって押し込むことにより、ＬＥＤ搭載基板を係止部に係止させることを考えている。 For this reason, the present inventor arranges the LED mounting board on the locking portion without sliding the side portion of the LED mounting substrate in the axial direction with respect to the locking portion. It is considered that the LED mounting substrate is locked to the locking portion by pushing toward the locking portion in the thickness direction.
　しかしながら、前記ＬＥＤ搭載基板が長尺矩形状をなすことから、ＬＥＤ搭載基板をその厚み方向に係止部に向かって押し込む際に、係止部に対してＬＥＤ搭載基板の側辺部がずれやすく、このずれによってＬＥＤ搭載基板の側辺部が歪んで皺が発生してしまうという問題がある。そして、ＬＥＤ搭載基板の側辺部の歪み又は皺により、ＬＥＤ搭載基板の側辺部が係止部に確実に係止されず、ＬＥＤ搭載基板の固定が不十分になり、ケーシングに対してＬＥＤ搭載基板がずれてしまうという問題が生じる。また、このＬＥＤ搭載基板の歪み又は皺により、ケーシングに対してＬＥＤの光軸がずれてしまうという問題も生じる。 However, since the LED mounting substrate has a long rectangular shape, when the LED mounting substrate is pushed in the thickness direction toward the locking portion, the side portion of the LED mounting substrate is easily displaced with respect to the locking portion. This shift causes a problem that the side portion of the LED mounting substrate is distorted and wrinkles are generated. Then, due to distortion or wrinkles on the side portion of the LED mounting substrate, the side portion of the LED mounting substrate is not securely locked to the locking portion, and the LED mounting substrate is not sufficiently fixed, and the LED is not attached to the casing. There arises a problem that the mounting substrate is displaced. Moreover, the problem that the optical axis of LED will shift | deviate with respect to a casing also arises with the distortion or wrinkles of this LED mounting substrate.
　そこで本発明は、上記問題点を一挙に解決するためになされたものであり、ＬＥＤ搭載基板をベース部材に取り付ける際に生じるＬＥＤ搭載基板の歪み又は皺を低減することをその主たる所期課題とするものである。 Accordingly, the present invention has been made to solve the above-mentioned problems all at once, and its main intended problem is to reduce distortion or wrinkles of the LED mounting substrate that occurs when the LED mounting substrate is attached to the base member. To do.
　すなわち本発明に係る光照射装置は、複数のＬＥＤが搭載された弾性変形可能な長尺形状をなすＬＥＤ搭載基板と、前記ＬＥＤ搭載基板が取り付けられるベース部材とを備え、前記ベース部材が、前記ＬＥＤ搭載基板の長手方向に垂直な幅方向両側の各側辺部に係止する互いに対向して設けられた第１の係止部及び第２の係止部を有しており、前記第１の係止部及び第２の係止部間の離間寸法を前記ＬＥＤ搭載基板の側辺部間寸法よりも小さく設定して、前記ＬＥＤ搭載基板が弾性変形して幅方向に湾曲した湾曲状態で前記第１の係止部及び第２の係止部に係止されるように構成されており、前記ＬＥＤ搭載基板が、前記各側辺部に幅方向内側に向かって形成された切り込み又は凹部を有することを特徴とする。 That is, the light irradiation apparatus according to the present invention includes an LED mounting substrate having an elastically deformable long shape on which a plurality of LEDs are mounted, and a base member to which the LED mounting substrate is attached. The first mounting portion and the second locking portion provided opposite to each other, which are locked to the respective side portions on both sides in the width direction perpendicular to the longitudinal direction of the LED mounting substrate, In the curved state in which the separation dimension between the engagement part and the second engagement part is set smaller than the dimension between the side parts of the LED mounting board, and the LED mounting board is elastically deformed and curved in the width direction. A notch or a recess that is configured to be locked to the first locking portion and the second locking portion, and in which the LED mounting substrate is formed in each side portion toward the inner side in the width direction. It is characterized by having.
　このようなものであれば、ＬＥＤ搭載基板の各側辺部に幅方向内側に向かって形成された切り込み又は凹部が形成されているので、ＬＥＤ搭載基板の各側辺部を各係止部に係止させる際に歪みが生じたとしても、当該歪みによりその他の側辺部に与える歪み影響は、当該歪み発生部分に隣接する切り込み又は凹部により吸収される。これにより、切り込み又は凹部を挟んで歪み発生部分に隣接するその他の側辺部に与える影響を低減することができる。その結果、歪み発生部分から歪み影響を受ける部分を低減することができ、ＬＥＤ搭載基板を確実に固定することができる。また、歪み発生部分から歪み影響を受ける部分を低減することができるため、当該歪みにより光軸ずれを生じるＬＥＤの数を低減することができる。さらに、歪み発生部分から歪み影響を受ける部分を低減することができるため、ＬＥＤ搭載基板を係止部に係止した状態の見た目を良くすることができる。 If it is such, since the cut | notch or recessed part formed toward the width direction inner side is formed in each side part of an LED mounting board, each side part of an LED mounting board is used as each latching | locking part. Even if a distortion occurs during the locking, the influence of the distortion on the other side part due to the distortion is absorbed by a notch or a recess adjacent to the distortion occurrence part. Thereby, the influence which it has on the other side part adjacent to a distortion generation part on both sides of a notch | incision or a recessed part can be reduced. As a result, it is possible to reduce the portion affected by the distortion from the distortion generating portion, and it is possible to securely fix the LED mounting substrate. Moreover, since the part which receives a distortion influence from a distortion generation part can be reduced, the number of LED which produces an optical axis offset by the said distortion can be reduced. Furthermore, since the part which receives a distortion influence from a distortion generation part can be reduced, the appearance of the state which latched the LED mounting board to the latching | locking part can be improved.
　また本発明によれば、ＬＥＤ搭載基板の各側辺部において各係止部に係止される部分が切り込み又は凹部により区画される構成となるため、歪み発生部分を含む歪み発生区画のみを各係止部から取り外すことができ、既に係止部に係止された当該歪み発生区画に隣接する側辺部を係止部から取り外す必要が無く、ＬＥＤ搭載基板の取り付け作業の二度手間を防止し、取り付けの作業性を向上させることができる。なお、ＬＥＤ搭載基板がＬＥＤから射出された光を反射する機能を有する場合には、当該ＬＥＤ搭載基板における歪み発生部分から歪み影響を受ける部分を低減することができるので、ＬＥＤからの光の反射光量を多くするだけでなく、反射ムラを低減することができる。 Further, according to the present invention, each of the side portions of the LED mounting substrate is configured such that the portions locked to the respective locking portions are partitioned by the cuts or the recesses, so that only the strain generating sections including the strain generating portions are each It can be removed from the locking part, and there is no need to remove the side part adjacent to the distortion generating section already locked by the locking part from the locking part, thus preventing twice the trouble of mounting the LED mounting board. In addition, the workability of mounting can be improved. When the LED mounting substrate has a function of reflecting light emitted from the LED, the portion affected by the distortion can be reduced from the distortion generating portion in the LED mounting substrate, so that the reflection of light from the LED can be reduced. Not only can the amount of light be increased, but also reflection unevenness can be reduced.
　ＬＥＤ搭載基板のＬＥＤをベース部材に対して確実に固定しつつ位置決めするためには、ＬＥＤ搭載基板の各側辺部においてＬＥＤを挟む位置にある各側辺部が各係止部に係止することが望ましい。このため、前記切り込み又は凹部が、前記各側辺部において、前記ＬＥＤ搭載基板の長手方向に沿って互いに隣接するＬＥＤの間に形成されていることが望ましい。特に、ＬＥＤ搭載基板の歪みにより影響を受けるＬＥＤ数を少なくするためには、前記切り込み又は凹部が、前記各側辺部において、前記ＬＥＤ搭載基板の長手方向に沿って互いに隣接するＬＥＤの間それぞれに形成されていることが望ましい。これならば、ＬＥＤ搭載基板の各側辺部において係止部に係止する被係止部分が各ＬＥＤを挟むように形成されることから、ベース部材に対してＬＥＤを確実に位置決めして固定することができる。 In order to position the LED mounting board while securely fixing the LED to the base member, each side part of the LED mounting board at a position sandwiching the LED is locked to each locking part. It is desirable. For this reason, it is desirable that the notch or the recess is formed between the LEDs adjacent to each other along the longitudinal direction of the LED mounting substrate in each of the side portions. In particular, in order to reduce the number of LEDs affected by the distortion of the LED mounting substrate, the notches or the recesses are formed between the adjacent LEDs along the longitudinal direction of the LED mounting substrate at each side portion. It is desirable to be formed. If this is the case, each of the side portions of the LED mounting substrate is formed so that the locked portion that is locked to the locking portion sandwiches each LED, so that the LED is reliably positioned and fixed with respect to the base member. can do.
　前記切り込み又は凹部が、前記ＬＥＤ搭載基板の長手方向に沿って互いに隣接するＬＥＤの中間位置に形成されていることが望ましい。これにより、長手方向に隣り合う２つの切り込み又は凹部の中間位置にＬＥＤが配置される構成となる。したがって、切り込み又は凹部により区画された領域内に含まれるＬＥＤが、当該領域の両側にある領域で歪みが発生した場合でも、その影響を受けにくくすることができる。具体的に前記ＬＥＤ搭載基板上に搭載されるＬＥＤが長手方向に等間隔に配置されるものの場合には、前記ＬＥＤ搭載基板の長手方向に沿って互いに隣接するＬＥＤの間隔と、前記ＬＥＤ搭載基板の長手方向に沿って互いに隣接する切り込み又は凹部の間隔とが略同一であることが望ましい。 It is desirable that the notch or the recess is formed at an intermediate position between the LEDs adjacent to each other along the longitudinal direction of the LED mounting substrate. Thereby, it becomes the structure by which LED is arrange | positioned in the intermediate position of two notches or recessed parts adjacent to a longitudinal direction. Therefore, even if the LED included in the region partitioned by the cuts or the recesses is distorted in the regions on both sides of the region, it can be made less susceptible to the influence. Specifically, in the case where the LEDs mounted on the LED mounting substrate are arranged at equal intervals in the longitudinal direction, the interval between the LEDs adjacent to each other along the longitudinal direction of the LED mounting substrate, and the LED mounting substrate It is desirable that the intervals between the notches or recesses adjacent to each other along the longitudinal direction are substantially the same.
　ＬＥＤ搭載基板における歪み発生部分のみを簡単に取り外すことができる構成とするためには、一方の側辺部に形成された切り込み又は凹部と他方の側辺部に形成された切り込み又は凹部とが、前記ＬＥＤ搭載基板の長手方向において略同一位置に形成されていることが望ましい。これならば、ＬＥＤ搭載基板の各側辺部に形成された切り込み又は凹部が対称となるため、ＬＥＤ搭載基板を単に厚み方向に引っ張るだけで歪み発生部分のみを取り外すことができる。 In order to make it possible to easily remove only the strain-generating portion of the LED mounting substrate, the notch or recess formed on one side and the notch or recess formed on the other side, It is desirable that they are formed at substantially the same position in the longitudinal direction of the LED mounting substrate. If this is the case, the cuts or recesses formed on each side of the LED mounting substrate are symmetrical, so that only the strain-generating portion can be removed by simply pulling the LED mounting substrate in the thickness direction.
　前記光照射装置が、前記ベース部材における係止部間の部位と、前記ＬＥＤ搭載基板におけるＬＥＤ搭載領域の裏面又はその近傍との間に配設された熱伝導性を有する介在体を備え、前記ＬＥＤ搭載基板が前記第１の係止部及び第２の係止部に係止した湾曲状態において、当該ＬＥＤ搭載基板の弾性変形によって当該ＬＥＤ搭載基板が前記介在体を介して前記ベース部材を押圧するように構成していることが望ましい。これならば、ＬＥＤ搭載基板の歪みを低減しつつも、その歪みが低減されたＬＥＤ搭載基板を介在体に密着させることができるので、ＬＥＤを効率的に放熱することができる。 The light irradiating device includes an intermediate body having thermal conductivity disposed between a portion between the locking portions of the base member and the back surface of the LED mounting region of the LED mounting substrate or the vicinity thereof, In a curved state in which the LED mounting substrate is locked to the first locking portion and the second locking portion, the LED mounting substrate presses the base member via the intermediate body due to elastic deformation of the LED mounting substrate. It is desirable to be configured to do so. If it is this, since the LED mounting board | substrate with which the distortion was reduced can be closely_contact | adhered to an intervening body, reducing the distortion | strain of an LED mounting board | substrate, LED can be thermally radiated efficiently.
　前記光照射装置が、前記ＬＥＤ搭載基板が前記第１の係止部及び第２の係止部に係止していない非係止状態から前記ＬＥＤ搭載基板をその厚み方向に前記第１の係止部及び第２の係止部に対して押し込むことによって、前記ＬＥＤ搭載基板が前記第１の係止部及び第２の係止部に係止されるように構成されており、前記非係止状態のＬＥＤ搭載基板を前記第１の係止部及び第２の係止部に対して位置決めするガイド面を備えることが望ましい。このガイド面は、前記第１の係止部及び第２の係止部に対して押し込み方向とは反対側に設けられている。これならば、ＬＥＤ搭載基板を係止部に係止させる際に、係止部に対してＬＥＤ搭載基板を位置決めすることができるとともに、ガイド面により位置決めされたＬＥＤ搭載基板を厚み方向に押圧するだけで、ＬＥＤ搭載基板を係止部に固定することができ、ＬＥＤ搭載基板の取り付け作業をより一層簡単にすることができる。 The light irradiation device moves the LED mounting board in the thickness direction from the non-locking state in which the LED mounting board is not locked to the first locking part and the second locking part. The LED mounting substrate is configured to be locked to the first locking portion and the second locking portion by being pushed into the locking portion and the second locking portion. It is desirable to provide a guide surface for positioning the LED mounting substrate in a stopped state with respect to the first locking portion and the second locking portion. The guide surface is provided on the side opposite to the pushing direction with respect to the first locking portion and the second locking portion. In this case, when the LED mounting substrate is locked to the locking portion, the LED mounting substrate can be positioned with respect to the locking portion, and the LED mounting substrate positioned by the guide surface is pressed in the thickness direction. As a result, the LED mounting substrate can be fixed to the locking portion, and the mounting operation of the LED mounting substrate can be further simplified.
　上述した光照射装置は、長尺形状をなすＬＥＤ搭載基板を有するものであったが、部分円環形状又は円環形状をなすＬＥＤ搭載基板を有するものであっても同様の効果を奏する。つまり、本発明に係る光照射装置は、複数のＬＥＤが搭載された弾性変形可能な部分円環形状又は円環形状をなすＬＥＤ搭載基板と、前記ＬＥＤ搭載基板が取り付けられるベース部材とを備え、前記ベース部材が、前記ＬＥＤ搭載基板の円周方向に垂直な幅方向両側の各側辺部に係止する互いに対向して設けられた第１の係止部及び第２の係止部を有しており、前記第１の係止部及び第２の係止部間の離間寸法を前記ＬＥＤ搭載基板の側辺部間寸法よりも小さく設定して、前記ＬＥＤ搭載基板が弾性変形して幅方向に湾曲した湾曲状態で前記第１の係止部及び第２の係止部に係止されるように構成されており、前記ＬＥＤ搭載基板が、前記各側辺部に幅方向内側に向かって形成された切り込み又は凹部を有することを特徴とする。 The above-described light irradiation apparatus has an LED mounting substrate having a long shape, but the same effect can be obtained even if the LED mounting substrate has a partial annular shape or an annular shape. That is, the light irradiation device according to the present invention includes an LED mounting substrate having a partially annular shape or an annular shape on which a plurality of LEDs are mounted, and a base member to which the LED mounting substrate is attached. The base member has a first locking portion and a second locking portion that are provided opposite to each other and that are locked to each side portion on both sides in the width direction perpendicular to the circumferential direction of the LED mounting substrate. The distance between the first locking portion and the second locking portion is set to be smaller than the dimension between the side portions of the LED mounting substrate, and the LED mounting substrate is elastically deformed to have a width. The LED mounting substrate is configured to be locked to the first locking portion and the second locking portion in a curved state that is curved in the direction, and the LED mounting board faces inward in the width direction at each side portion. It has the notch | incision or recessed part formed by this, It is characterized by the above-mentioned.
　このように構成した本発明によれば、ＬＥＤ搭載基板をベース部材に取り付ける際に生じるＬＥＤ搭載基板の歪みを低減するだけでなく、歪みが生じた場合にその歪み部分のみを簡単に取り外すことができる。 According to the present invention configured as described above, not only the distortion of the LED mounting substrate that occurs when the LED mounting substrate is attached to the base member, but also the strained portion can be easily removed when distortion occurs. it can.
本発明の一実施形態における光照射装置の一端側の構成を示す斜視図。The perspective view which shows the structure of the one end side of the light irradiation apparatus in one Embodiment of this invention. 同実施形態における光照射装置の軸方向に垂直な断面図。Sectional drawing perpendicular | vertical to the axial direction of the light irradiation apparatus in the embodiment. 同実施形態におけるＬＥＤ搭載基板の構成を示す平面図。The top view which shows the structure of the LED mounting board in the embodiment. 同実施形態における基板の係止状態を示すベース部材の断面図。Sectional drawing of the base member which shows the latching state of the board | substrate in the embodiment. 同実施形態における基板の非係止状態を示すベース部材の断面図。Sectional drawing of the base member which shows the non-locking state of the board | substrate in the embodiment. ＬＥＤ搭載基板の変形例を示す平面図。The top view which shows the modification of a LED mounting substrate. 凹部の機能を模式的に示す図。The figure which shows the function of a recessed part typically. ＬＥＤ搭載基板の変形例を示す平面図。The top view which shows the modification of a LED mounting substrate. ＬＥＤ搭載基板の変形例を示す平面図。The top view which shows the modification of a LED mounting substrate. ＬＥＤ搭載基板の変形例を示す平面図。The top view which shows the modification of a LED mounting substrate.
１００・・・光照射装置
１　　・・・円筒体
２　　・・・ＬＥＤ搭載基板
２ａ　・・・一方の側辺部
２ｂ　・・・他方の側辺部
３　　・・・ベース部材
５　　・・・ＬＥＤ
６　　・・・第１の係止部
７　　・・・第２の係止部 DESCRIPTION OF SYMBOLS 100 ... Light irradiation apparatus 1 ... Cylindrical body 2 ... LED mounting substrate 2a ... One side part 2b ... The other side part 3 ... Base member 5 ... LED
6 ... 1st latching | locking part 7 ... 2nd latching | locking part
　以下に本発明に係る光照射装置の一実施形態について図面を参照して説明する。 Hereinafter, an embodiment of a light irradiation apparatus according to the present invention will be described with reference to the drawings.
　本実施形態に係る光照射装置１００は、室内外の一般照明、検査用照明又は植物育成用照明等に用いることができるライン型のものであって、図１及び図２に示すように、概略直円筒状をなす円筒体１と、この円筒体１の内部に収容されるＬＥＤ搭載基板２と、前記ＬＥＤ搭載基板２を前記円筒体１内で保持するベース部材３と、前記円筒体１の軸方向両端部に取り付けられてＬＥＤ搭載基板２に給電する口金部材４とを備えている。 The light irradiation apparatus 100 according to the present embodiment is a line type that can be used for indoor / outdoor general illumination, inspection illumination, plant growth illumination, or the like, as shown in FIGS. 1 and 2. A cylindrical body 1 having a right cylindrical shape, an LED mounting board 2 accommodated in the cylindrical body 1, a base member 3 for holding the LED mounting board 2 in the cylindrical body 1, and the cylindrical body 1 And a base member 4 that is attached to both ends in the axial direction and feeds power to the LED mounting substrate 2.
　円筒体１は、例えばガラス製の透光性を有するものであり、軸方向両端部に開口を有する概略直円筒状をなすものである。その両端開口には、前記ＬＥＤ搭載基板２及びベース部材３が収容された後に、それぞれ口金部材４が装着される。 The cylindrical body 1 is made of, for example, glass and has a light-transmitting property, and has a substantially straight cylindrical shape having openings at both ends in the axial direction. After the LED mounting substrate 2 and the base member 3 are accommodated in the openings at both ends, the base members 4 are respectively attached.
　ＬＥＤ搭載基板２は、配線が予めプリントされたいわゆるプリント基板と称されるもので、図３に示すように、その表面に複数のＬＥＤ５が搭載されている。ここでは、厚みが例えば０．５ｍｍ以下で非常に薄く、弾性変形して湾曲するタイプのものを用いている。また、このＬＥＤ搭載基板２は、外力を与えない自然状態では、概略長尺矩形平板状をなすものであり、その長手方向（長尺方向）の寸法は、前記円筒体１の収容空間の長手方向の寸法よりも若干小さい。さらに、このＬＥＤ搭載基板２における少なくともＬＥＤ搭載側の面のほぼ全面に、反射コーティングを施すなどして鏡面化し、光反射率を向上させてある。鏡面の他に白色塗料を塗布するなどして白色面にしてもよい。 The LED mounting board 2 is a so-called printed board on which wiring is printed in advance, and a plurality of LEDs 5 are mounted on the surface thereof as shown in FIG. Here, a type that is very thin, for example, 0.5 mm or less, and is elastically deformed and curved is used. In addition, the LED mounting substrate 2 has a substantially long rectangular flat plate shape in a natural state where no external force is applied, and the longitudinal direction (longitudinal direction) dimension is the length of the housing space of the cylindrical body 1. It is slightly smaller than the dimension in the direction. Furthermore, at least almost the entire surface of the LED mounting substrate 2 on the LED mounting side is mirrored by applying a reflective coating or the like to improve the light reflectance. In addition to the mirror surface, a white paint may be applied to form a white surface.
　ＬＥＤ５は、例えば白色光を発する表面実装型高輝度タイプのチップ型ＬＥＤであり、ここでは、近紫外光を発するＬＥＤ素子（図示しない）と、そのＬＥＤ素子から出る光を波長変換して白色光に変える蛍光部材とを利用して構成してある。そして、図３に示すように、このＬＥＤ５を、ＬＥＤ搭載基板２の表面における幅方向中央に、長手方向に沿って一列に端から端まで等間隔で搭載している。 The LED 5 is, for example, a surface-mounted high-luminance type chip LED that emits white light. Here, an LED element (not shown) that emits near-ultraviolet light and wavelength-converted light emitted from the LED element are white light. And a fluorescent member to be changed into And as shown in FIG. 3, this LED5 is mounted in the center of the width direction in the surface of the LED mounting substrate 2 at equal intervals from the end to the end in a line along the longitudinal direction.
　ベース部材３は、前記ＬＥＤ搭載基板２を保持した状態で、前記円筒体１内に収容配置されるものである。具体的にベース部材３は、図４及び図５に示すように、概略部分円筒状をなし、直線有底溝状の収容空間３ａが内部に形成された例えばアルミニウムなどの金属製のものである。なお、部分筒状とは、筒を端面から視たときに一部が欠けた環状となる形状のことである。そして本実施形態では、その外周面は前記円筒体１の内周面に沿った概略部分円弧形状をなしている。また、ベース部材３の長手方向の寸法は、前記円筒体１の収容空間の長手方向の寸法よりも若干小さく、前記ＬＥＤ搭載基板２の長手方向の寸法と略同じである。 The base member 3 is accommodated in the cylindrical body 1 while holding the LED mounting substrate 2. Specifically, as shown in FIGS. 4 and 5, the base member 3 has a substantially partial cylindrical shape, and is made of a metal such as aluminum in which a linear bottomed groove-like accommodation space 3 a is formed. . In addition, a partial cylinder shape is an annular shape with a part missing when the cylinder is viewed from the end face. In this embodiment, the outer peripheral surface has a substantially partial arc shape along the inner peripheral surface of the cylindrical body 1. Further, the length in the longitudinal direction of the base member 3 is slightly smaller than the length in the longitudinal direction of the housing space of the cylindrical body 1 and is substantially the same as the length in the longitudinal direction of the LED mounting substrate 2.
　そして、そのベース部材３の長手方向に平行な縁部内面、すなわちベース部材３の開口３ｂの内縁部にそれぞれ第１の係止部６及び第２の係止部７を設け、これら係止部６、７にＬＥＤ搭載基板２の前記長手方向と平行な各側縁部２ａ、２ｂを係止させるようにしている。この係止部６、７は、ベース部材３の前記各内縁部から対向する方向に延出する突条状をなすものであり、この係止部６、７に、又はこの係止部６、７及びベース部材３の内周面３ｃの間に前記ＬＥＤ搭載基板２の側辺部２ａ、２ｂが係止される。 And the 1st latching | locking part 6 and the 2nd latching | locking part 7 are each provided in the inner surface of the edge part parallel to the longitudinal direction of the base member 3, ie, the inner edge part of the opening 3b of the base member 3, These latching parts The side edge portions 2a and 2b parallel to the longitudinal direction of the LED mounting substrate 2 are engaged with the LED mounting substrate 6 and 7, respectively. The locking portions 6 and 7 have a ridge shape extending from the inner edge portions of the base member 3 to face each other. The locking portions 6 and 7 or the locking portions 6 and 7 7 and the inner peripheral surface 3 c of the base member 3 are engaged with the side portions 2 a and 2 b of the LED mounting substrate 2.
　また、ベース部材３の内周面３ｃにおける幅方向中央から、長手方向に沿って端から端まで延びる突条状の熱伝導性を有する介在体８が一体に突出させてある。この介在体８の突出端面８ａ（以下、先端面８ａとも言う。）は、ベース部材３の開口面と平行な平面で、かつ、その幅は、ＬＥＤ５の幅と同じ又はそれよりも大きくなるように設定してある。 In addition, a protrusion-like intercalating body 8 extending from the center in the width direction on the inner peripheral surface 3c of the base member 3 from end to end along the longitudinal direction is integrally protruded. The protruding end surface 8a (hereinafter, also referred to as the front end surface 8a) of the intermediate body 8 is a plane parallel to the opening surface of the base member 3, and the width thereof is the same as or larger than the width of the LED 5. It is set to.
　ところで、ベース部材３の開口３ｂの幅寸法、すなわち係止部６、７間の寸法をＬＥＤ搭載基板２の幅方向寸法よりも小さく設定してある。したがって、ＬＥＤ搭載基板２を係止部６、７に係止した状態では、ＬＥＤ搭載基板２は収容空間３ａ側（介在体８側）に向かって幅方向に湾曲することになるが、そのとき、ＬＥＤ搭載基板２におけるＬＥＤ搭載領域Ｄ１の裏面２ｃと、前記介在体８の先端面８ａとが押圧接触するように構成してある。このようにして、ＬＥＤ搭載基板２は、横断面視、その両側辺部２ａ、２ｂ及び中央部（ＬＥＤ搭載領域Ｄ１の裏面２ｃ）の３箇所のみで支えられて固定される。 Incidentally, the width dimension of the opening 3 b of the base member 3, that is, the dimension between the locking portions 6 and 7 is set smaller than the dimension in the width direction of the LED mounting substrate 2. Therefore, in a state where the LED mounting substrate 2 is locked to the locking portions 6 and 7, the LED mounting substrate 2 is curved in the width direction toward the accommodation space 3a side (intervening body 8 side). The back surface 2c of the LED mounting region D1 in the LED mounting substrate 2 and the tip surface 8a of the interposition body 8 are configured to be in press contact. In this way, the LED mounting substrate 2 is supported and fixed only at three places, that is, in cross-sectional view, both side portions 2a and 2b and the central portion (the back surface 2c of the LED mounting region D1).
　また、ベース部材３の開口３ｂの内縁部には、第１の係止部６及び第２の係止部７よりも開口側（押し込み方向とは反対側）である上部に、ＬＥＤ搭載基板２をそれら係止部６、７に対して位置決めするガイド面９ａ、９ｂが形成してある。このガイド面９ａ、９ｂは、前記第１の係止部６及び第２の係止部７と同様に、ベース部材３の長手方向に平行な縁部内面に互いに対向して形成してある。そして、このガイド面９ａ、９ｂ間の寸法は、前記ＬＥＤ搭載基板２が若干のがたつきを持って嵌る程度に設定してあり、このガイド面９ａ、９ｂ間にＬＥＤ搭載基板２が配置されることで、ＬＥＤ搭載基板２の長手方向に沿った中心軸が第１の係止部６及び第２の係止部７の中心位置に位置決めされる。 Further, on the inner edge portion of the opening 3 b of the base member 3, the LED mounting substrate 2 is disposed on the upper side that is the opening side (opposite to the pushing direction) from the first locking portion 6 and the second locking portion 7. Is formed with guide surfaces 9a and 9b for positioning them with respect to the locking portions 6 and 7. The guide surfaces 9 a and 9 b are formed opposite to each other on the inner surface of the edge parallel to the longitudinal direction of the base member 3, similarly to the first locking portion 6 and the second locking portion 7. The dimension between the guide surfaces 9a and 9b is set such that the LED mounting board 2 fits with a slight backlash, and the LED mounting board 2 is disposed between the guide surfaces 9a and 9b. Thus, the central axis along the longitudinal direction of the LED mounting substrate 2 is positioned at the center position of the first locking portion 6 and the second locking portion 7.
　ＬＥＤ搭載基板２の係止方法の一例としては、図５に示すように、ＬＥＤ搭載基板２をベース部材３の係止部６、７上に載置する。このとき、ＬＥＤ搭載基板２はガイド面９ａ、９ｂにより位置決めされる。そして、ＬＥＤ搭載基板２が第１の係止部６及び第２の係止部７に係止していない非係止状態で、ＬＥＤ搭載基板２をその厚み方向に第１の係止部６及び第２の係止部７に向かって収容空間３ａ側に押し込む。これにより、ＬＥＤ搭載基板２が湾曲するとともに、ＬＥＤ搭載基板２の各側辺部２ａ、２ｂが係止部６、７を乗り越えて収容空間３ａ側に移動することで、ＬＥＤ搭載基板２の各側辺部２ａ、２ｂが第１の係止部６及び第２の係止部７に係止する（図４参照）。その後、ベース部材３を円筒体１内に軸方向に挿入して収容配置した後に、円筒体１の軸方向両端部の開口を口金部材４で閉塞する。この口金部材４は、ＬＥＤ搭載基板２の端部に設けられた接続端子と電気的に接続するコネクタを有し、円筒体１の開口を閉塞すると同時に、円筒体１に対してベース部材３を位置決めし、ＬＥＤ搭載基板２の端部に設けられた接続端子に接続されるように構成されている。 As an example of a method for locking the LED mounting substrate 2, the LED mounting substrate 2 is placed on the locking portions 6 and 7 of the base member 3 as shown in FIG. 5. At this time, the LED mounting substrate 2 is positioned by the guide surfaces 9a and 9b. And the LED mounting board 2 is the 1st locking part 6 in the thickness direction in the non-locking state in which the LED mounting board 2 is not locked to the first locking part 6 and the second locking part 7. And it pushes in toward the 2nd latching | locking part 7 in the accommodation space 3a side. As a result, the LED mounting substrate 2 is curved, and the side portions 2a and 2b of the LED mounting substrate 2 move over the engaging portions 6 and 7 and move toward the accommodation space 3a. The side portions 2a and 2b are locked to the first locking portion 6 and the second locking portion 7 (see FIG. 4). Thereafter, the base member 3 is inserted and accommodated in the cylindrical body 1 in the axial direction, and then the openings at both axial ends of the cylindrical body 1 are closed by the base member 4. The base member 4 has a connector that is electrically connected to a connection terminal provided at an end of the LED mounting substrate 2, and closes the opening of the cylindrical body 1, and at the same time, attaches the base member 3 to the cylindrical body 1. It is configured to be positioned and connected to a connection terminal provided at an end of the LED mounting substrate 2.
　したがって、本実施形態の構成によれば、ＬＥＤ搭載基板２の弾性力によってＬＥＤ搭載領域Ｄ１の裏面２ｃが介在体８に確実に押圧されて面接触するので、チップ型ＬＥＤ５で発生した熱を、効率的に、この介在体８を通じてベース部材３に逃がすことができる。また湾曲可能な基板２は一般的に薄い部材で形成してあることから、その厚みによる熱伝達の阻害影響を小さくでき、その点でも介在体８への熱伝達が効率的に営まれることとなる。しかも、介在体８へＬＥＤ搭載基板２を接触させるにあたって、ネジ締めや特別な治具等を必要とせず、単にＬＥＤ搭載基板２を第１の係止部６及び第２の係止部７に係止させるだけなので、組み立てが飛躍的に簡単になる。また、ＬＥＤ搭載基板２が湾曲してその表面が凹反射面の役割を果たすので、特に専用の反射部材を設けずとも、チップ型ＬＥＤ５からの光の指向性を良好にできるとともにロス光を低減させ得るといった効果も得られる。 Therefore, according to the configuration of the present embodiment, the back surface 2c of the LED mounting region D1 is reliably pressed against the interposition body 8 by the elastic force of the LED mounting substrate 2 and comes into surface contact. It is possible to efficiently escape to the base member 3 through the intermediate body 8. In addition, since the bendable substrate 2 is generally formed of a thin member, the influence of heat transfer inhibition due to its thickness can be reduced, and in that respect, heat transfer to the interposition body 8 is efficiently performed. Become. In addition, when the LED mounting substrate 2 is brought into contact with the interposition body 8, screw fastening or a special jig is not required, and the LED mounting substrate 2 is simply attached to the first locking portion 6 and the second locking portion 7. As it is only locked, assembly is greatly simplified. Further, since the LED mounting substrate 2 is curved and its surface functions as a concave reflecting surface, the directivity of light from the chip-type LED 5 can be improved and loss light can be reduced without providing a special reflecting member. The effect that it can be made is also acquired.
　しかして、本実施形態のＬＥＤ搭載基板２は、図３に示すように、各側辺部２ａ、２ｂに幅方向内側に向かって形成された複数の部分円弧状の凹部２１を有し、各側辺部２ａ、２ｂが凹凸構造を有する。 Therefore, as shown in FIG. 3, the LED mounting substrate 2 of the present embodiment has a plurality of partial arc-shaped concave portions 21 formed in the side portions 2 a and 2 b toward the inner side in the width direction. The side portions 2a and 2b have an uneven structure.
　具体的にこのＬＥＤ搭載基板２においては、複数の凹部２１は同一形状をなし、各凹部２１が各側辺部２ａ、２ｂにおいてＬＥＤ搭載基板２の長手方向に沿って互いに隣接するＬＥＤ５の間それぞれに形成してある。具体的には、一方の側辺部２ａに形成された凹部２１と、他方の側辺部２ｂに形成された凹部２１とは、ＬＥＤ搭載基板２の長手方向において略同一位置に形成してあり、ＬＥＤ搭載基板２は平面視において中心軸に対して対称形状をなす。また、ＬＥＤ搭載基板２の長手方向に沿って互いに隣接するＬＥＤ５の間隔（ピッチ）Ｌ１とＬＥＤ搭載基板２の長手方向に沿って互いに隣接する凹部２１の間隔（ピッチ）Ｌ２とが略同一となるように形成してある。また、凹部２１は、ＬＥＤ搭載基板２の長手方向に沿って互いに隣接するＬＥＤ５の中間位置に形成してある。 Specifically, in the LED mounting substrate 2, the plurality of recesses 21 have the same shape, and each recess 21 is between the LEDs 5 adjacent to each other along the longitudinal direction of the LED mounting substrate 2 at each of the side portions 2 a and 2 b. Is formed. Specifically, the recess 21 formed in one side 2a and the recess 21 formed in the other side 2b are formed at substantially the same position in the longitudinal direction of the LED mounting substrate 2. The LED mounting substrate 2 is symmetrical with respect to the central axis in plan view. The interval (pitch) L1 between the LEDs 5 adjacent to each other along the longitudinal direction of the LED mounting substrate 2 and the interval (pitch) L2 between the recesses 21 adjacent to each other along the longitudinal direction of the LED mounting substrate 2 are substantially the same. It is formed as follows. The recess 21 is formed at an intermediate position between the LEDs 5 adjacent to each other along the longitudinal direction of the LED mounting substrate 2.
　このように凹部２１が形成されたＬＥＤ搭載基板２において、ＬＥＤ５は、各側辺部２ａ、２ｂに形成された凹部２１によって区画されるように配置されており、この凹部２１によって区画された領域（以下、区画領域という。）にはそれぞれ１つのＬＥＤ５が含まれることになる。なお、図３において各区画領域の境界を点線で示している。この構成により、ＬＥＤ搭載基板２の各側辺部２ａ、２ｂにおいて係止部６、７に係止する被係止部分が各ＬＥＤ５を挟むように形成されることから、ベース部材３に対してＬＥＤ５を確実に位置決めできるとともに、介在体８の先端面８ａにＬＥＤ搭載基板２の裏面２ｃを確実に密着させることができる。また、区画領域に１つずつＬＥＤ５が配置される構成であるため、ある区画領域で歪みが生じてもその歪み影響は、当該区画領域に隣接する区画領域には及ばないようになり、その隣接する区画領域を係止部６、７に確実に係止させることができる。また、歪み影響を受けるＬＥＤ５の数を少なくすることができる。 In the LED mounting substrate 2 in which the recesses 21 are formed in this way, the LEDs 5 are arranged so as to be partitioned by the recesses 21 formed in the side portions 2a and 2b, and the regions partitioned by the recesses 21 One LED 5 is included in each (hereinafter referred to as a partitioned area). In addition, in FIG. 3, the boundary of each partition area | region is shown with the dotted line. With this configuration, the locked portions that are locked to the locking portions 6 and 7 in the side portions 2 a and 2 b of the LED mounting substrate 2 are formed so as to sandwich the LEDs 5. The LED 5 can be reliably positioned, and the back surface 2 c of the LED mounting substrate 2 can be reliably adhered to the distal end surface 8 a of the interposed body 8. In addition, since the LEDs 5 are arranged one by one in the partition area, even if distortion occurs in a certain partition area, the distortion effect does not reach the partition area adjacent to the partition area. The partition area to be held can be reliably locked to the locking portions 6 and 7. In addition, the number of LEDs 5 affected by distortion can be reduced.
　また、凹部２１は、ＬＥＤ搭載基板２の歪みが生じ易い部分、つまり、ＬＥＤ搭載基板２の幅方向において湾曲する部分（ＬＥＤ搭載領域Ｄ１を挟んだ両側の部分Ｄ２）の範囲内に形成されている（図３参照）。すなわち、凹部２１の幅方向の深さ寸法は、ＬＥＤ搭載領域Ｄ１に到達しない程度であり、幅方向において湾曲する部分Ｄ２の幅寸法以下に設定してある。 The concave portion 21 is formed within a range of a portion where the LED mounting substrate 2 is likely to be distorted, that is, a portion that is curved in the width direction of the LED mounting substrate 2 (portions D2 on both sides of the LED mounting region D1). (See FIG. 3). That is, the depth dimension of the recess 21 in the width direction is such that it does not reach the LED mounting region D1, and is set to be equal to or less than the width dimension of the portion D2 curved in the width direction.
　なお、凹部２１の平面視形状としては、部分円弧状や部分楕円弧状の他、コの字状（矩形状）であっても良いし（図６（Ａ）参照）、Ｖ字形状（図６（Ｂ）参照）やＵ字形状（図６（Ｃ）参照）であっても良い。 In addition, as a planar view shape of the recessed part 21, a U-shape (rectangular shape) other than partial arc shape or partial elliptical arc shape may be sufficient (refer FIG. 6 (A)), or V shape (FIG. 6). (See (B)) or a U-shape (see FIG. 6C).
　次にこのように構成した凹部２１の機能とともにＬＥＤ搭載基板２の取り付け及び取り外しについて図７を参照して説明する。 Next, the attachment and detachment of the LED mounting substrate 2 together with the function of the recess 21 configured as described above will be described with reference to FIG.
　ＬＥＤ搭載基板２の凹部２１により区画された各区画領域（図７において２Ａ～２Ｄ）を、ＬＥＤ搭載基板２の長手方向の一方（例えば区画領域２Ａ）から１つ１つ係止部６、７に押し込んでいき、ＬＥＤ搭載基板２を係止部６、７に係止させてベース部材３に取り付ける。 Each partition region (2A to 2D in FIG. 7) partitioned by the concave portion 21 of the LED mounting substrate 2 is locked one by one from the longitudinal direction of the LED mounting substrate 2 (for example, the partition region 2A) one by one. The LED mounting substrate 2 is locked to the locking portions 6 and 7 and attached to the base member 3.
　ここで、仮に１つの区画領域２Ｂに歪みが生じた場合に、その歪み影響は、当該区画領域２Ｂに隣接する凹部２１により吸収されて、隣の区画領域２Ａ、２Ｃまで到達しにくい。そして、そのまま隣の区画領域２Ｃを係止部６、７に押し込んで係止させたとしても、通常通り、区画領域２Ｃは係止部６、７に係止し、その後の区画領域２Ｄも通常通り係止部６、７に係止させることができる。 Here, if a distortion occurs in one partition region 2B, the distortion effect is absorbed by the concave portion 21 adjacent to the partition region 2B and hardly reaches the adjacent partition regions 2A and 2C. And even if it pushes the adjacent division area 2C into the latching | locking parts 6 and 7 as it is, the division area 2C latches to the latching | locking parts 6 and 7 as usual, and the subsequent division area 2D is also normal. It can be made to latch to the street latching | locking parts 6 and 7. FIG.
　また、上記の区画領域２Ｂに歪みが生じた場合に、その歪みを修正する場合には、当該区画領域２Ｂと既に係止している区画領域２Ａの間の凹部２１の存在により、区画領域２Ｂのみを係止部から取り外すことができる。取り外した区画領域２Ｂの歪みを直した後に再度区画領域２Ｂを係止部６、７に係止させる。これにより、必要最低限の区画領域２Ｂのみを取り外す作業のみで、歪みを修正することができる。この作業を繰り返すことによって、ＬＥＤ搭載基板２をベース部材３に取り付けていく。 Further, when distortion occurs in the partition area 2B, when the distortion is corrected, the partition area 2B is present due to the presence of the concave portion 21 between the partition area 2B and the partition area 2A that is already locked. Only can be removed from the locking part. After correcting the distortion of the removed partitioned area 2B, the partitioned area 2B is again locked by the locking portions 6 and 7. Thereby, distortion can be corrected only by the operation | work which removes only the required minimum division area 2B. By repeating this operation, the LED mounting substrate 2 is attached to the base member 3.
　このように構成した本実施形態に係る光照射装置１００によれば、ＬＥＤ搭載基板２の各側辺部２ａ、２ｂに幅方向内側に向かって形成された凹部２１が形成されているので、ＬＥＤ搭載基板２の各側辺部２ａ、２ｂを係止部６、７に係止させる際に歪みが生じたとしても、当該歪み発生部分（図７において区画領域２Ｂ）に隣接する凹部２１により吸収される。これにより、歪み発生部分（区画領域２Ｂ）に凹部２１を挟んで隣接するその他（区画領域２Ａ、２Ｃ）の側辺部２ａ、２ｂに与える影響を低減することができる。その結果、歪み発生部分から歪み影響を受ける部分を低減することができ、ＬＥＤ搭載基板２の固定が確実にすることができる。また、歪み発生部分を低減することができるため、当該歪みにより生じるＬＥＤ５の光軸ずれを低減することができ、さらに、ＬＥＤ搭載基板２を係止部６、７に係止した状態の見た目を良くすることができる。 According to the light irradiation device 100 according to the present embodiment configured as described above, the concave portions 21 formed toward the inner side in the width direction are formed in the side portions 2a and 2b of the LED mounting substrate 2, and thus the LED Even if distortion occurs when the side portions 2a and 2b of the mounting substrate 2 are locked to the locking portions 6 and 7, they are absorbed by the concave portion 21 adjacent to the distortion generation portion (partition region 2B in FIG. 7). Is done. Thereby, the influence which it has on the side part 2a, 2b of other (partition area | region 2A, 2C) adjacent to the distortion generation part (partition area | region 2B) on both sides of the recessed part 21 can be reduced. As a result, it is possible to reduce the portion affected by the distortion from the distortion generating portion, and to fix the LED mounting substrate 2 reliably. Moreover, since the distortion generation part can be reduced, the optical axis deviation of the LED 5 caused by the distortion can be reduced, and the appearance of the state in which the LED mounting substrate 2 is locked to the locking portions 6 and 7 is also achieved. Can be better.
　また、ＬＥＤ搭載基板２の各側辺部２ａ、２ｂにおいて各係止部６、７に係止される部分が凹部２１により区画される構成となるため、歪み発生部分を含む区画領域（図７において２Ｂ）のみを係止部６、７から取り外すことができ、既に係止部６、７に係止された区画領域（図７において２Ａ）を係止部６、７から取り外す必要が無く、ＬＥＤ搭載基板２の取り付け作業の二度手間を防止し、取り付けの作業性を向上させることができる。 Moreover, since the part latched by each latching | locking part 6 and 7 in each side part 2a, 2b of the LED mounting board 2 becomes a structure partitioned off by the recessed part 21, the division area | region containing a distortion generation | occurrence | production part (FIG. 7). 2B) can be removed from the locking portions 6 and 7, and it is not necessary to remove the partition area (2A in FIG. 7) already locked to the locking portions 6 and 7 from the locking portions 6 and 7, The trouble of attaching the LED mounting substrate 2 twice can be prevented, and the attachment workability can be improved.
　さらに、ＬＥＤ搭載基板２における歪み発生部分から歪み影響を受ける部分を低減することができるので、ＬＥＤ５からの光の反射光量を多くするだけでなく、反射ムラを低減することができる。 Furthermore, since the portion affected by the distortion from the distortion generation portion in the LED mounting substrate 2 can be reduced, not only the amount of light reflected from the LED 5 can be increased, but also the reflection unevenness can be reduced.
　なお、本発明は前記実施形態に限られるものではない。
　例えば、前記実施形態では、ＬＥＤ搭載基板２の各側辺部２ａ、２ｂに凹部２１を形成したものであったが、図８に示すように、単に切り込み２２を形成したものであっても良い。これならば、ＬＥＤ搭載基板２に切り込み２２を入れるだけで、前記実施形態と同様の効果を得ることができ、光照射装置１００の製造を簡単にすることができる。なお、切り込み２２を挟んで隣接する区画領域同士の対向辺が実質的に接触又は近接した構成であるため、一方の区画領域が歪んだ場合にその一方の区画領域の対向辺が他方の区画領域の対向辺に接触しまう恐れがある。一方、前記実施形態では、区画領域の対向辺が離間しているため、この心配が無い。 The present invention is not limited to the above embodiment.
For example, in the above-described embodiment, the concave portions 21 are formed in the side portions 2a and 2b of the LED mounting substrate 2. However, as shown in FIG. . If this is the case, it is possible to obtain the same effect as that of the above-described embodiment simply by making the cut 22 in the LED mounting substrate 2, and the light irradiation device 100 can be easily manufactured. In addition, since the opposing sides of the adjacent partition areas are substantially in contact with or close to each other with the notch 22 interposed therebetween, when one partition area is distorted, the opposing side of the one partition area is the other partition area. There is a risk of touching the opposite side of the. On the other hand, in the said embodiment, since the opposing side of a division area is spaced apart, there is no such worry.
　また、図９（Ａ）に示すように、凹部２１又は切り込み２２を長手方向に沿って複数のＬＥＤ５毎に形成しても良い。なお、図９（Ａ）では、ＬＥＤ２つ置きに形成した場合を示している。さらに図９（Ｂ）に示すように、各側辺部２ａ、２ｂに形成する凹部２１が対向しないように互い違いとなるように形成しても良い。 Further, as shown in FIG. 9A, a recess 21 or a cut 22 may be formed for each of the plurality of LEDs 5 along the longitudinal direction. FIG. 9A shows a case where every two LEDs are formed. Further, as shown in FIG. 9B, the recesses 21 formed on the side portions 2a and 2b may be formed alternately so as not to face each other.
　また、前記実施形態では、光照射装置は、ベース部材を円筒体内に収容配置したものであったが、ベース部材の開口に透明又は光拡散性を有するカバーを取り付けることにより、光照射装置を構成しても良い。 In the above-described embodiment, the light irradiating device is configured such that the base member is accommodated in the cylindrical body. However, the light irradiating device is configured by attaching a transparent or light diffusing cover to the opening of the base member. You may do it.
　さらに、前記実施形態ではベース部材に熱伝導性を有する介在体を一体形成したものであったが、別部材の熱伝導部材を介在体としてＬＥＤ搭載基板の裏面及びベース部材の内周面との間に配置したものであっても良い。また、介在体を有さず、ベース部材３の内周面３ｃにＬＥＤ搭載基板２の裏面２ｃが接触するように構成しても良い。 Furthermore, in the said embodiment, the base member was integrally formed with an intermediate body having thermal conductivity. However, with the thermal conductive member of another member as an intermediate body, the back surface of the LED mounting substrate and the inner peripheral surface of the base member It may be arranged between them. Moreover, you may comprise so that the back surface 2c of the LED mounting board | substrate 2 may contact the internal peripheral surface 3c of the base member 3, without having an interposition body.
　その上、ＬＥＤ搭載基板におけるＬＥＤの配置態様としては、前記実施形態のように長尺方向に沿って１列配置の他、複数列配置としても良い。 Furthermore, as an LED arrangement mode on the LED mounting substrate, a single-row arrangement or a multi-row arrangement may be employed along the longitudinal direction as in the above-described embodiment.
　加えて、前記実施形態の光照射装置は、ライン型のものであったが、リング型のものであっても良い。このとき、ＬＥＤ搭載基板２は部分円環状又は円環状をなすものである。そして、このＬＥＤ搭載基板２には、図１０に示すように、ＬＥＤ搭載基板２の円周方向に垂直な幅方向両側の内側辺部及び外側辺部に凹部２１又は切り込みが形成してある。そして、中心に貫通孔を有したリング状ボディの環状溝にＬＥＤ搭載基板２を押し込むことより取り付けられる。 In addition, the light irradiation apparatus of the above embodiment is a line type, but may be a ring type. At this time, the LED mounting substrate 2 has a partial annular shape or an annular shape. In addition, as shown in FIG. 10, the LED mounting substrate 2 is formed with recesses 21 or cuts on inner side portions and outer side portions on both sides in the width direction perpendicular to the circumferential direction of the LED mounting substrate 2. And it attaches by pushing the LED mounting substrate 2 in the cyclic | annular groove | channel of the ring-shaped body which has the through-hole in the center.
　また、前記実施形態では、１つのベース部材に１つのＬＥＤ搭載基板が取り付けられる態様について説明したが、１つのベース部材に対して複数のＬＥＤ搭載基板を長手方向に連続するように取り付けるように構成しても良い。さらに、１つの円筒体内に複数のベース部材を長手方向に連続するように収容配置しても良い。 Moreover, although the said embodiment demonstrated the aspect in which one LED mounting board was attached to one base member, it comprised so that a some LED mounting board might be attached to one base member so that it may continue in a longitudinal direction. You may do it. Furthermore, a plurality of base members may be accommodated and disposed in one cylindrical body so as to be continuous in the longitudinal direction.
　その他、本発明は前記実施形態に限られず、その趣旨を逸脱しない範囲で種々の変形が可能であるのは言うまでもない。 In addition, it goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
　このように本発明の光照射装置によれば、ＬＥＤ搭載基板をベース部材に取り付ける際に生じるＬＥＤ搭載基板の歪みを低減することができる。 Thus, according to the light irradiation device of the present invention, it is possible to reduce the distortion of the LED mounting substrate that occurs when the LED mounting substrate is attached to the base member.

Claims (5)

  1. 　複数のＬＥＤが搭載された弾性変形可能な長尺形状をなすＬＥＤ搭載基板と、前記ＬＥＤ搭載基板が取り付けられるベース部材とを備え、
    　前記ベース部材が、前記ＬＥＤ搭載基板の長手方向に垂直な幅方向両側の各側辺部に係止する互いに対向して設けられた第１の係止部及び第２の係止部を有しており、前記第１の係止部及び第２の係止部間の離間寸法を前記ＬＥＤ搭載基板の側辺部間寸法よりも小さく設定して、前記ＬＥＤ搭載基板が弾性変形して幅方向に湾曲した湾曲状態で前記第１の係止部及び第２の係止部に係止されるように構成されており、
    　前記ＬＥＤ搭載基板が、前記各側辺部に幅方向内側に向かって形成された切り込み又は凹部を有することを特徴とする光照射装置。     An LED mounting board having a long shape that is elastically deformable and on which a plurality of LEDs are mounted, and a base member to which the LED mounting board is attached,
    The base member has a first locking portion and a second locking portion that are provided opposite to each other and locked to each side portion on both sides in the width direction perpendicular to the longitudinal direction of the LED mounting substrate. The distance between the first locking portion and the second locking portion is set smaller than the dimension between the side portions of the LED mounting substrate, and the LED mounting substrate is elastically deformed to cause the width direction. And is configured to be locked to the first locking portion and the second locking portion in a curved state.
    The said LED mounting substrate has the notch | incision or recessed part formed toward the width direction inner side in each said side part, The light irradiation apparatus characterized by the above-mentioned.
  2. 　前記切り込み又は凹部が、前記各側辺部において、前記ＬＥＤ搭載基板の長手方向に沿って互いに隣接するＬＥＤの間それぞれに形成されている請求項１記載の光照射装置。 The light irradiation device according to claim 1, wherein the cuts or recesses are formed between the LEDs adjacent to each other along the longitudinal direction of the LED mounting substrate in each side portion.
  3. 　前記ベース部材における係止部間の部位と、前記ＬＥＤ搭載基板におけるＬＥＤ搭載領域の裏面又はその近傍との間に配設された熱伝導性を有する介在体を備え、
    　前記ＬＥＤ搭載基板が前記湾曲状態において、当該ＬＥＤ搭載基板の弾性変形によって当該ＬＥＤ搭載基板が前記介在体を介して前記ベース部材を押圧するように構成している請求項１記載の光照射装置。     An intermediate body having thermal conductivity disposed between a portion between the locking portions of the base member and the back surface of the LED mounting region of the LED mounting substrate or the vicinity thereof;
    The light irradiation apparatus according to claim 1, wherein the LED mounting substrate is configured such that the LED mounting substrate presses the base member via the intermediate body by elastic deformation of the LED mounting substrate when the LED mounting substrate is in the curved state.
  4. 　前記ＬＥＤ搭載基板が前記第１の係止部及び第２の係止部に係止していない非係止状態から前記ＬＥＤ搭載基板をその厚み方向に前記第１の係止部及び第２の係止部に対して押し込むことによって、前記ＬＥＤ搭載基板が前記第１の係止部及び第２の係止部に係止されるように構成されており、
    　前記第１の係止部及び第２の係止部に対して押し込み方向とは反対側に設けられ、前記非係止状態のＬＥＤ搭載基板を前記第１の係止部及び第２の係止部に対して位置決めするガイド面を備える請求項１記載の光照射装置。     From the non-locking state in which the LED mounting board is not locked to the first locking part and the second locking part, the LED mounting board is moved in the thickness direction of the first locking part and the second locking part. The LED mounting substrate is configured to be locked to the first locking portion and the second locking portion by being pushed into the locking portion,
    Provided on the opposite side of the pushing direction with respect to the first locking portion and the second locking portion, the LED locking substrate in the non-locking state is connected to the first locking portion and the second locking portion. The light irradiation apparatus of Claim 1 provided with the guide surface positioned with respect to a part.
  5. 　複数のＬＥＤが搭載された弾性変形可能な部分円環形状又は円環形状をなすＬＥＤ搭載基板と、前記ＬＥＤ搭載基板が取り付けられるベース部材とを備え、
    　前記ベース部材が、前記ＬＥＤ搭載基板の円周方向に垂直な幅方向両側の各側辺部に係止する互いに対向して設けられた第１の係止部及び第２の係止部を有しており、前記第１の係止部及び第２の係止部間の離間寸法を前記ＬＥＤ搭載基板の側辺部間寸法よりも小さく設定して、前記ＬＥＤ搭載基板が弾性変形して幅方向に湾曲した湾曲状態で前記第１の係止部及び第２の係止部に係止されるように構成されており、
    　前記ＬＥＤ搭載基板が、前記各側辺部に幅方向内側に向かって形成された切り込み又は凹部を有することを特徴とする光照射装置。     An LED mounting substrate having a partially annular shape or an annular shape on which a plurality of LEDs are mounted, and a base member to which the LED mounting substrate is attached,
    The base member has a first locking portion and a second locking portion that are provided opposite to each other and that are locked to each side portion on both sides in the width direction perpendicular to the circumferential direction of the LED mounting substrate. The distance between the first locking portion and the second locking portion is set to be smaller than the dimension between the side portions of the LED mounting substrate, and the LED mounting substrate is elastically deformed to have a width. Configured to be locked to the first locking portion and the second locking portion in a curved state curved in a direction,
    The said LED mounting substrate has the notch | incision or recessed part formed toward the width direction inner side in each said side part, The light irradiation apparatus characterized by the above-mentioned.
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