JP2013073869A - Photoirradiation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce warping of an LED mounting substrate caused when attaching the LED mounting substrate on a base member.SOLUTION: 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

  The present invention relates to a light irradiation apparatus having an LED mounting substrate in which an LED is mounted on an elastically deformable substrate.

  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. .

  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. .

JP 2011-1000070 A

  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.

  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.

  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.

  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.

  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.

  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.

  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 that it is 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.

  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.

  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.

  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.

  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 light irradiation device described above 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 in this way, It is characterized by the above-mentioned.

  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.

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 | vertical to the axial direction of the light irradiation apparatus in the embodiment. 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 | substrate in the embodiment. Sectional drawing of the base member which shows the non-locking state of the board | substrate in the embodiment. 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 top view which shows the modification of a LED mounting substrate. The top view which shows the modification of a LED mounting substrate.

  An embodiment of a light irradiation apparatus according to the present invention will be described below with reference to the drawings.

  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.

  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 called 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.

  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.

  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.

  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.

  In addition, an intermediary body 8 having a protrusion-like thermal conductivity 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.

  By the way, 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).

  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.

  As an example of the locking method of 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.

  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.

  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.

  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.

  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.

  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.

  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).

  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.

  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.

  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.

  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.

  According to the light irradiation device 100 according to the present embodiment configured as described above, since 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, 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.

  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.

  Furthermore, since the part affected by the distortion from the distortion generating part in the LED mounting substrate 2 can be reduced, not only the amount of reflected light 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.
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 partitioned areas are substantially in contact with or close to each other with the notch 22 interposed therebetween, when one partitioned area is distorted, the facing side of one partitioned area is the other partitioned 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 this worry.

  Moreover, as shown in FIG. 9A, the recess 21 or the notch 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.

  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.

  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.

  In addition, as an arrangement mode of the LEDs on the LED mounting substrate, a plurality of rows may be arranged in addition to the one row arrangement along the longitudinal direction as in the embodiment.

  In addition, the light irradiation device 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.

  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.

  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.

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

Claims (5)

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.   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 of the side portions. 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;
3. The light irradiation 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. apparatus. 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, 2, or 3 provided with the guide surface positioned with respect to a part. 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.