JP6295455B2 - Light irradiation device - Google Patents

Light irradiation device Download PDF

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JP6295455B2
JP6295455B2 JP2014013151A JP2014013151A JP6295455B2 JP 6295455 B2 JP6295455 B2 JP 6295455B2 JP 2014013151 A JP2014013151 A JP 2014013151A JP 2014013151 A JP2014013151 A JP 2014013151A JP 6295455 B2 JP6295455 B2 JP 6295455B2
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heat
light source
flat plate
light
casing
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JP2015141785A (en
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大輔 岡本
大輔 岡本
昌之 礒谷
昌之 礒谷
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CCS Inc
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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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/30—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
    • 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]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Geometry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Description

本発明は、光源と、光源で生じた熱を放熱する放熱手段とを備えた光照射装置に関する。   The present invention relates to a light irradiation device including a light source and heat radiating means for radiating heat generated by the light source.

前記光照射装置の一例として、例えば、特許文献１に示すライン光照射装置が知られている。
このライン光照射装置は、複数のＬＥＤを搭載した長尺状のＬＥＤ基板と、このＬＥＤ基板を収容するケーシングと、当該ケーシングに固定されて前記複数のＬＥＤからの光をライン状に集光させるロッドレンズとを有している。
また、前記ＬＥＤ基板が設けられるケーシングの底壁部の裏面には、ＬＥＤで発生する熱を外部に放出するための放熱フィンが長手方向に沿って複数枚設けられている。 As an example of the light irradiation apparatus, for example, a line light irradiation apparatus disclosed in Patent Document 1 is known.
The line light irradiation device includes a long LED substrate on which a plurality of LEDs are mounted, a casing that accommodates the LED substrate, and a light that is fixed to the casing and collects light from the plurality of LEDs in a line shape. And a rod lens.
A plurality of heat radiation fins for releasing heat generated by the LEDs to the outside are provided on the back surface of the bottom wall portion of the casing where the LED substrate is provided.

特開２０１２−１８６０１４号公報JP 2012-186014 A

ところが、特許文献１に記載のライン光照射装置では、ＬＥＤの出力が比較的低く、ＬＥＤの発熱量が小さい場合には、ＬＥＤに生じる熱を放熱フィンによって十分に放熱できるものの、例えば、紫外線を射出するＬＥＤのようにＬＥＤの出力が高い場合には、当該ＬＥＤの発熱量が大きく、十分な放熱量を確保し難いという問題があった。   However, in the line light irradiation device described in Patent Document 1, when the output of the LED is relatively low and the amount of heat generated by the LED is small, the heat generated in the LED can be sufficiently dissipated by the radiation fin. When the output of the LED is high like the LED to be emitted, there is a problem that the amount of heat generated by the LED is large and it is difficult to secure a sufficient amount of heat dissipation.

本発明は、前記事情に鑑みてなされたもので、光源に生じた熱を十分に放熱して当該光源を冷却できる放熱特性に優れた光照射装置を提供することを目的とする。   This invention is made | formed in view of the said situation, and it aims at providing the light irradiation apparatus excellent in the thermal radiation characteristic which can fully dissipate the heat which generate | occur | produced in the light source, and can cool the said light source.

前記目的を達成するために、本発明の光照射装置は、
光源と、
前記光源で生じた熱を放熱する放熱手段とを備えた光照射装置であって、
前記放熱手段は、端部側に前記光源が設けられる平板型ヒートパイプと、
前記平板型ヒートパイプの表面に設けられたヒートシンクとを備えていることを特徴とする。 In order to achieve the above object, the light irradiation device of the present invention comprises:
A light source;
A light irradiating device comprising a heat radiating means for radiating heat generated by the light source,
The heat dissipating means is a flat plate heat pipe provided with the light source on the end side,
And a heat sink provided on the surface of the flat plate heat pipe.

ここで、前記平板型ヒートパイプとしては、例えばベーパーチャンバと称される薄板状のものが使用される。このベーパーチャンバは、密閉された内部空間に少量の作動液が封入され、作動液の気化熱と凝縮熱を利用して熱を輸送するデバイスである。また、本発明では、平板型ヒートパイプとして、並設された複数の管状体（ヒートパイプ）を備える板状体も含む。   Here, as the flat plate type heat pipe, for example, a thin plate shape called a vapor chamber is used. This vapor chamber is a device in which a small amount of working fluid is sealed in a sealed internal space and transports heat using the heat of vaporization and heat of condensation of the working fluid. Moreover, in this invention, the plate-shaped body provided with the several tubular body (heat pipe) arranged in parallel is also included as a flat plate-type heat pipe.

本発明においては、光源で発生した熱は、平板型ヒートパイプの端部から面方向に素早く伝導していき、ヒートシンクによって効率的に放熱される。したがって、高出力のＬＥＤ等の光源に生じる熱を十分に放熱して当該光源を冷却できる。   In the present invention, the heat generated by the light source is quickly conducted in the plane direction from the end of the flat plate heat pipe, and is efficiently radiated by the heat sink. Therefore, the heat generated in the light source such as a high-power LED can be sufficiently dissipated to cool the light source.

本発明の前記構成において、前記平板型ヒートパイプの前記光源が設けられた端部側の表面に接触して、当該平板型ヒートパイプを厚さ方向において挟み込む熱伝導部材を備え、
この熱伝導部材に前記光源が接触していることが好ましい。 In the configuration of the present invention, a heat conduction member is provided in contact with the surface of the flat plate heat pipe on the end portion side where the light source is provided, and sandwiching the flat plate heat pipe in the thickness direction,
The light source is preferably in contact with the heat conducting member.

ここで、熱伝導部材は、例えば銅やアルミニウム等の熱伝導性に優れた材料で形成される。
また、熱伝導部材に光源が接触しているとは、光源が熱伝導部材に直接接触している場合は勿論のこと、例えば光源がＬＥＤである場合等は、当該ＬＥＤが搭載されたＬＥＤ基板を介してＬＥＤが熱伝導部材に間接的に接触する場合も含む。 Here, the heat conductive member is formed of a material having excellent heat conductivity, such as copper or aluminum.
In addition, the light source is in contact with the heat conducting member is not only the case where the light source is in direct contact with the heat conducting member. For example, when the light source is an LED, the LED board on which the LED is mounted. It also includes the case where the LED indirectly contacts the heat conducting member via

このような構成によれば、光源で発生する熱を熱伝導部材によってより効果的に平板型ヒートパイプに伝えることができる。
また、熱伝導部材が平板型ヒートパイプを厚さ方向において挟み込むので、薄い平板型ヒートパイプを安定的に保持できる。
さらに、熱伝導部材に光源が接触しているので、薄い平板型ヒートパイプの端部側に直接光源を配置する場合に比して、光源の配置の自由度が高まるとともに、当該光源を安定して配置できる。 According to such a configuration, the heat generated by the light source can be more effectively transmitted to the flat plate type heat pipe by the heat conducting member.
Further, since the heat conducting member sandwiches the flat plate heat pipe in the thickness direction, the thin flat plate heat pipe can be stably held.
Furthermore, since the light source is in contact with the heat conducting member, the degree of freedom of the light source is increased and the light source is stabilized as compared with the case where the light source is directly arranged on the end side of the thin flat plate heat pipe. Can be arranged.

また、前記本願発明の前記構成において、前記光源、平板型ヒートパイプ及びヒートシンクが収容されるケーシングを備え、
前記ケーシングには、前記平板型ヒートパイプの前記光源側とは逆側に送風ファンが設けられ、
前記ヒートシンクは、円柱状、楕円柱状若しくは多角柱状をした複数の放熱フィン、または、前記送風ファンによって生じる空気流に沿うように形成される薄板状をした複数の放熱フィンを備えることが好ましい。 In the configuration of the invention of the present application, the light source, a flat plate heat pipe, and a casing in which a heat sink is accommodated,
The casing is provided with a blower fan on the opposite side to the light source side of the flat plate heat pipe,
The heat sink preferably includes a plurality of radiating fins having a cylindrical shape, an elliptical column shape, or a polygonal column shape, or a plurality of thin radiating fins formed so as to follow an air flow generated by the blower fan.

このような構成によれば、送風ファンから送り込まれる風（空気）または送風ファンに吸い込まれる空気が複数の放熱フィン間を通るので、より効果的にヒートシンクによって熱を放熱できる。   According to such a configuration, since the air (air) sent from the blower fan or the air sucked into the blower fan passes between the plurality of heat radiation fins, heat can be radiated more effectively by the heat sink.

また、前記本願発明の前記構成において、前記ケーシングは、前記ヒートシンクに臨む開口部を備えていることが好ましい。   Moreover, the said structure of the said invention of this application WHEREIN: It is preferable that the said casing is provided with the opening part which faces the said heat sink.

このような構成によれば、送風ファンから送り込まれてヒートシンクを通った空気が開口部からケーシングの外部に排出されたり、外部の空気が開口部から入り込んでヒートシンクを通って、当該送風ファンによって外部に排出される。したがって、ケーシング内に熱を籠らせることなく、ヒートシンクから外部に熱を放熱できる。   According to such a configuration, the air sent from the blower fan and passed through the heat sink is discharged from the opening to the outside of the casing, or the external air enters from the opening and passes through the heat sink and is externally supplied by the blower fan. To be discharged. Therefore, heat can be dissipated from the heat sink to the outside without causing heat to flow into the casing.

また、本発明の前記構成において、前記光源が、複数の発光素子を列状に配置したライン型光源であってもよい。   In the configuration of the present invention, the light source may be a line light source in which a plurality of light emitting elements are arranged in a row.

このような構成によれば、ライン型光源に生じる熱を十分に放熱して当該ライン型光源を冷却しつつ、ライン状の高出力の光を照射できる。   According to such a configuration, it is possible to irradiate the line-shaped high output light while sufficiently dissipating the heat generated in the line light source to cool the line light source.

本発明によれば、高出力のＬＥＤ等の光源に生じる熱を十分に放熱して当該光源を冷却できる。   According to the present invention, heat generated in a light source such as a high-power LED can be sufficiently dissipated to cool the light source.

本発明の実施の形態に係る光照射装置を示すもので、内部構造を見せた光照射装置の斜視図である。The light irradiation apparatus which concerns on embodiment of this invention is shown, and is the perspective view of the light irradiation apparatus which showed the internal structure. 同、正面図である。FIG. 同、底面図である。FIG. 同、縦断面図である。FIG. 同、放熱手段を示す縦断面図である。It is a longitudinal cross-sectional view which shows a thermal radiation means similarly. 同、放熱手段を示す底面図である。It is a bottom view which shows a thermal radiation means similarly. 同、放熱手段を示す平面図である。It is a top view which shows a thermal radiation means similarly.

以下、本発明の実施の形態について図面を参照して説明する。
図１〜図４は、本発明の実施の形態に係る光照射装置の一例を示すもので、図１は光照射装置の内部構造を見せた斜視図、図２は光照射装置の正面図、図３は同底面図、図４は同縦断面図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show an example of a light irradiation apparatus according to an embodiment of the present invention. FIG. 1 is a perspective view showing the internal structure of the light irradiation apparatus, FIG. 2 is a front view of the light irradiation apparatus, 3 is a bottom view thereof, and FIG. 4 is a longitudinal sectional view thereof.

本実施の形態に示す光照射装置は、例えば樹脂を硬化させるために当該樹脂に紫外線を照射することができるライン光照射装置である。
このライン光照射装置１は、ケーシング２と、光源３と、放熱手段４とを備えている。
ケーシング２は、左右の側板２ａ,２ｂ、正面板２ｃ、背面板２ｄ、上面板２ｅ及び下面板２ｆによって、直方体箱状に形成されている。なお、図１においては、正面板２ｃ及び下面板２ｆを外した状態を示している。 The light irradiation apparatus described in this embodiment is a line light irradiation apparatus that can irradiate ultraviolet rays to the resin in order to cure the resin, for example.
The line light irradiation device 1 includes a casing 2, a light source 3, and a heat radiating means 4.
The casing 2 is formed in a rectangular parallelepiped box shape by left and right side plates 2a, 2b, a front plate 2c, a back plate 2d, an upper plate 2e, and a lower plate 2f. FIG. 1 shows a state where the front plate 2c and the lower plate 2f are removed.

ケーシング２においては、左右の側板２ａ,２ｂと背面板２ｄとが一体的に形成され、上面板２ｅは、側板２ａ,２ｂ及び背面板２ｄに固定されている。また、正面板２ｃと下面板２ｆは取り外し可能となっている。また、上面板２ｅは、後述する送風ファン１２を取り付けるために、左右の側板２ａ,２ｂ、正面板２ｃ、背面板２ｄ、下面板２ｆより厚くなっている。   In the casing 2, the left and right side plates 2a, 2b and the back plate 2d are integrally formed, and the top plate 2e is fixed to the side plates 2a, 2b and the back plate 2d. Further, the front plate 2c and the lower plate 2f are removable. The top plate 2e is thicker than the left and right side plates 2a, 2b, the front plate 2c, the back plate 2d, and the bottom plate 2f in order to attach a blower fan 12 to be described later.

正面板２ｃ及び背面板２ｄの下端部近傍には、図１、図２及び図４に示すように、横長の矩形の開口部２ｇ,２ｇが対向して形成されている。なお、この開口部２ｇの機能については後述する。
また、前記下面板２ｆには、図３に示すように、その略中央部に横長の矩形の開口部２ｈが形成されている。この開口部２ｈは後述する光源３に臨んで形成されたものであり、当該開口部２ｈから光（紫外線）を外部に向けて照射するようになっている。 In the vicinity of the lower ends of the front plate 2c and the back plate 2d, as shown in FIGS. 1, 2 and 4, horizontally long rectangular openings 2g, 2g are formed to face each other. The function of the opening 2g will be described later.
Further, as shown in FIG. 3, the lower surface plate 2f is formed with a horizontally long rectangular opening 2h at a substantially central portion thereof. The opening 2h is formed so as to face the light source 3 to be described later, and light (ultraviolet rays) is irradiated to the outside from the opening 2h.

前記光源３は、図６に示すように、複数のＬＥＤ３ａを列状に配置したライン型光源であり、これらＬＥＤ３ａ…は横長矩形のＬＥＤ基板３ｂの短辺方向における略中央部表面に、横一列にほぼ隙間なく並設されて固定されている。なお、ＬＥＤ３ａは、一列ではなく、複数列で設けてもよい。   As shown in FIG. 6, the light source 3 is a line-type light source in which a plurality of LEDs 3a are arranged in a row, and these LEDs 3a ... are arranged in a horizontal row on a substantially central surface in a short side direction of a horizontally long LED substrate 3b. Are fixed in parallel with almost no gap. The LEDs 3a may be provided in a plurality of rows instead of a single row.

前記放熱手段４は、前記光源３で発生する熱を放熱するものであり、図４及び図５に示すように、ベーパーチャンバ（平板型ヒートパイプ）５と、ヒートシンク６とから構成されている。
ベーパーチャンバ５は、密閉された内部空間に少量の作動液が封入され、作動液の気化熱と凝縮熱を利用して熱を輸送するデバイスであり、全体的に矩形薄板状に形成されている。なお、本実施の形態で使用されるベーパーチャンバ５は１枚ものであるが、複数のベーパーチャンバを面方向に接合して構成してもよい。 The heat dissipating means 4 dissipates heat generated by the light source 3 and includes a vapor chamber (flat plate heat pipe) 5 and a heat sink 6 as shown in FIGS.
The vapor chamber 5 is a device in which a small amount of hydraulic fluid is sealed in a sealed internal space and transports heat using the vaporization heat and condensation heat of the hydraulic fluid, and is formed into a rectangular thin plate as a whole. . Although one vapor chamber 5 is used in the present embodiment, a plurality of vapor chambers may be joined in the surface direction.

ベーパーチャンバ５は、その下端部が一対の熱伝導部材７,７により挟持された状態でケーシング２内に設けられている。また、ベーパーチャンバ５はその表面がケーシング２の正面板２ｃ及び背面板２ｄと平行になるようにして、これらの間の略中央でかつケーシング２内の略下半分側に配置されている。   The vapor chamber 5 is provided in the casing 2 with a lower end portion sandwiched between the pair of heat conducting members 7 and 7. Further, the vapor chamber 5 is arranged at a substantially center between the front plate 2c and the back plate 2d of the casing 2 and on a substantially lower half side in the casing 2 so that the surface thereof is parallel to the front plate 2c and the back plate 2d.

熱伝導部材７は、熱伝導性に優れた銅等の金属で形成された、断面略三角形状の長尺状のものであり、その長さはベーパーチャンバ５の長辺方向の長さより長く、図１に示すように、ケーシング２の左右の側板２ａ,２ｂ間に延在している。また、図５に示すように、熱伝導部材７の断面における頂部には、平面部７ａが、当該熱伝導部材７の下面７ｂと平行に設けられている。なお、この平面部７ａの幅（図５における左右方向の長さ）は下面７ｂの幅より小さく、かつヒートシンク６の基板６ａの板厚より大きくなっている。   The heat conducting member 7 is formed of a metal such as copper having excellent heat conductivity and has a long section with a substantially triangular cross section, and its length is longer than the length of the vapor chamber 5 in the long side direction. As shown in FIG. 1, the casing 2 extends between the left and right side plates 2 a and 2 b. As shown in FIG. 5, a flat portion 7 a is provided in parallel with the lower surface 7 b of the heat conducting member 7 at the top in the cross section of the heat conducting member 7. Note that the width of the flat portion 7a (the length in the left-right direction in FIG. 5) is smaller than the width of the lower surface 7b and larger than the thickness of the substrate 6a of the heat sink 6.

熱伝導部材７,７の対向する側面７ｃ,７ｃは平行に離間して設けられ、この側面７ｃ,７ｃ間にベーパーチャンバ５の下端部が配置され、当該側面７ｃ,７ｃによって挟持されるとともに、当該ベーパーチャンバ５の下端部の両表面が側面７ｃ,７ｃに密接されている。
ベーパーチャンバ５の下端面は熱伝導部材７,７の下面７ｂ,７ｂと面一になっており、当該下面７ｂ,７ｂにＬＥＤ基板３ｂが密接されている。また、ＬＥＤ基板３ａの幅方向（図５における左右方向）の中央部の裏面にベーパーチャンバ５の下端面が密接されている。
また、図１に示すように、熱伝導部材７は、その長手方向を左右方向に向けて、ケーシング２内の下端部に配設されており、当該熱伝導部材７の左右両端面がそれぞれケーシング２の左右の側板２ａ,２ｂに固定されている。 The opposing side surfaces 7c and 7c of the heat conducting members 7 and 7 are spaced apart in parallel, the lower end of the vapor chamber 5 is disposed between the side surfaces 7c and 7c, and is sandwiched between the side surfaces 7c and 7c. Both surfaces of the lower end portion of the vapor chamber 5 are in close contact with the side surfaces 7c and 7c.
The lower end surface of the vapor chamber 5 is flush with the lower surfaces 7b, 7b of the heat conducting members 7, 7, and the LED substrate 3b is in close contact with the lower surfaces 7b, 7b. Further, the lower end surface of the vapor chamber 5 is in close contact with the back surface of the central portion of the LED substrate 3a in the width direction (left and right direction in FIG. 5).
As shown in FIG. 1, the heat conducting member 7 is disposed at the lower end portion in the casing 2 with its longitudinal direction facing the left and right direction, and the left and right end faces of the heat conducting member 7 are respectively casings. 2 are fixed to the left and right side plates 2a, 2b.

前記ヒートシンク６は、矩形板状の基板６ａと、この基板６ａに設けられた多数の薄板状の放熱フィン６ｂ…とによって構成され、前記ベーパーチャンバ５を挟み込むようにして一対設けられている。
すなわち、基板６ａ,６ａの対向する裏面６ｃ,６ｃは平行に離間して設けられ、この裏面６ｃ,６ｃ間にベーパーチャンバ５の下端部より上側全部が配置され、当該裏面６ｃ,６ｃによって挟持されるとともに、当該ベーパーチャンバ５の両表面が基板６ａ,６ａの裏面６ｃ,６ｃに密接されている。 The heat sink 6 is composed of a rectangular plate-like substrate 6a and a large number of thin-plate-like heat radiation fins 6b provided on the substrate 6a, and a pair is provided so as to sandwich the vapor chamber 5.
That is, the opposing back surfaces 6c and 6c of the substrates 6a and 6a are provided in parallel and spaced apart from each other, and the entire upper side from the lower end of the vapor chamber 5 is disposed between the back surfaces 6c and 6c and is sandwiched between the back surfaces 6c and 6c. At the same time, both surfaces of the vapor chamber 5 are in close contact with the back surfaces 6c and 6c of the substrates 6a and 6a.

多数の放熱フィン６ｂ…はそれぞれ矩形板状に形成され、基板６ａの表面にほぼ直角に立設した状態で上下方向に沿うように固定されている。また、図１、図２及び図７に示すように、放熱フィン６ｂ…は、その表面を対向させて横方向に並設されており、その並設方向は、ＬＥＤ３ａの並設方向と同方向（図５において紙面と直交する方向）である。   The plurality of heat radiation fins 6b are each formed in a rectangular plate shape, and are fixed along the vertical direction in a state of being erected on the surface of the substrate 6a at a substantially right angle. Moreover, as shown in FIG.1, FIG2 and FIG.7, the radiation fin 6b ... is arranged in the horizontal direction with the surface facing, and the parallel arrangement direction is the same direction as the parallel arrangement direction of LED3a. (Direction perpendicular to the paper surface in FIG. 5).

横方向（左右方向）に並設された放熱フィン６ｂ…は、図４及び図５に示すように、上下方向に所定の隙間をもって複数列（本実施の形態では６列）配置されている。これら複数列の放熱フィン６ｂ…においては、上下に隣り合う放熱フィン６ｂ,６ｂどうしが左右の位置を同位置にして配置されている。したがって、左右に隣り合う放熱フィン６ｂ,６ｂどうしの間は、上下方向において連続し、その間を空気がスムーズに通り抜けることができるようになっている。   The heat dissipating fins 6b arranged in parallel in the horizontal direction (left and right direction) are arranged in a plurality of rows (six rows in the present embodiment) with a predetermined gap in the vertical direction, as shown in FIGS. In these plural rows of heat radiation fins 6b, the heat radiation fins 6b, 6b adjacent to each other in the vertical direction are arranged with the left and right positions at the same position. Therefore, the radiation fins 6b, 6b adjacent to each other on the left and right are continuous in the vertical direction so that air can smoothly pass through the space.

このようなヒートシンク６,６は、図１及び図７に示すように、支持部材１０に固定されており、この支持部材１０を介してケーシング２の左右の側板２ａ,２ｂの裏面に固定され、ケーシング２内に配置される。   As shown in FIGS. 1 and 7, the heat sinks 6 and 6 are fixed to the support member 10, and are fixed to the back surfaces of the left and right side plates 2 a and 2 b of the casing 2 through the support member 10. Arranged in the casing 2.

図２及び図４に示すように、前記ケーシング２の正面板２ｃ及び背面板２ｄにそれぞれ形成されている開口部２ｇは、熱伝導部材７と最下段の放熱フィン６ｂの列を臨む位置に配置されている。
また、前記ＬＥＤ３ａの前方（下方）には、円柱状のロッドレンズ１１が支持部１１ａ,１１ａによって支持されて設けられている。このロッドレンズ１１の前方（下方）に、前記下面板２ｆに形成された開口部２ｈが配置されている。したがって、ＬＥＤ３ａからの光（紫外線）は、ロッドレンズ１１により集光されたうえで、開口部２ｈから外部に照射されるようになっている。 As shown in FIGS. 2 and 4, the openings 2 g formed in the front plate 2 c and the back plate 2 d of the casing 2 are arranged at positions facing the rows of the heat conducting member 7 and the lowermost radiating fins 6 b. Has been.
Further, a columnar rod lens 11 is supported and supported by support portions 11a and 11a in front (downward) of the LED 3a. An opening 2h formed in the lower surface plate 2f is disposed in front (downward) of the rod lens 11. Therefore, the light (ultraviolet rays) from the LED 3a is condensed by the rod lens 11 and then irradiated to the outside through the opening 2h.

また、ケーシング２は複数の送風ファン１２を備えている。この送風ファン１２は、前記ヒートシンク６の放熱フィン６ｂの並設方向と直交する方向において、ＬＥＤ３ａと逆側に配置されている。
具体的には、ケーシング２の上面板２ｃに、複数（４個）の送風ファン１２が上面板２ｃの長手方向に沿って一列に設けられている。上面板２ｃには送風ファン１２の送風口に対向して図示しない貫通孔が形成されており、この貫通孔から送風ファン１２による風（空気）がケーシング１内に送り込まれるようになっている。 The casing 2 includes a plurality of blower fans 12. The blower fan 12 is disposed on the opposite side to the LED 3a in a direction orthogonal to the direction in which the heat dissipating fins 6b of the heat sink 6 are arranged.
Specifically, a plurality (four) of blower fans 12 are provided in a row along the longitudinal direction of the upper surface plate 2 c on the upper surface plate 2 c of the casing 2. A through hole (not shown) is formed in the upper surface plate 2c so as to face the air outlet of the blower fan 12, and wind (air) from the blower fan 12 is sent into the casing 1 through the through hole.

また、図１及び図２に示すように、前記ケーシング２内には、２枚の風向制御板１３,１３が設けられている。すなわち、風向制御板１３,１３は矩形板状のものであり、その上端縁部が前記上面板２ｅの下面の左右両縁部にそれぞれ固定されている。風向制御板１３,１３は下方に向かうにしたがって、内側に向かうように傾斜しており、その下端部は最上段の放熱フィン６ｂの列の左右端近傍にそれぞれ位置している。また、風向制御板１３の幅は、一方のヒートシンク６の放熱フィン６ｂの先端から他方のヒートシンク６の放熱フィン６の先端までの長さとほぼ等しくなっている。   As shown in FIGS. 1 and 2, two wind direction control plates 13 and 13 are provided in the casing 2. That is, the wind direction control plates 13 and 13 are rectangular plate-shaped, and upper edge portions thereof are respectively fixed to left and right edge portions of the lower surface of the upper surface plate 2e. The air direction control plates 13 and 13 are inclined so as to go inward as they go downward, and their lower ends are respectively located near the left and right ends of the row of the uppermost radiating fins 6b. Further, the width of the wind direction control plate 13 is substantially equal to the length from the tip of the radiating fin 6 b of one heat sink 6 to the tip of the radiating fin 6 of the other heat sink 6.

したがって、送風ファン１２から送り込まれた風（空気）は風向制御板１３,１３によって内側に案内されて、ヒートシンク６に向けて流れ、ヒートシンク６の放熱フィン６ｂ,６ｂ間を通り抜けた空気は、前記開口部２ｇから外部に排出される。
また、図４に示すように、開口部２ｇに臨んでいる熱伝導部材７の側面７ｄは、ケーシング２の下端に向かうにしたがって、開口部２ｇに近付くように傾斜しているので、この傾斜している側面７ｄ上を空気が流れて、開口部２ｇからスムーズに排出される。 Therefore, the wind (air) sent from the blower fan 12 is guided inward by the wind direction control plates 13 and 13 and flows toward the heat sink 6, and the air passing between the heat radiation fins 6 b and 6 b of the heat sink 6 is It is discharged outside through the opening 2g.
Further, as shown in FIG. 4, the side surface 7d of the heat conducting member 7 facing the opening 2g is inclined so as to approach the opening 2g toward the lower end of the casing 2. The air flows on the side surface 7d, and is smoothly discharged from the opening 2g.

以上のように、本実施の形態のライン光照射装置１では、ベーパーチャンバ５の下端部側にＬＥＤ３ａが設けられているので、当該ＬＥＤ３ａで発生した熱は、ベーパーチャンバ５の下端部から面方向に素早く伝導していく。その際、このベーパーチャンバ５の両表面にはヒートシンク６,６が設けられているので、ベーパーチャンバ５に伝わった熱がヒートシンク６,６によって効率的に放熱される。
したがって、高出力のＬＥＤ３ａで生じる熱を十分に放熱して当該ＬＥＤ３ａを冷却できる。 As described above, in the line light irradiation device 1 of the present embodiment, the LED 3a is provided on the lower end portion side of the vapor chamber 5, so that the heat generated in the LED 3a is in the surface direction from the lower end portion of the vapor chamber 5. Conduct quickly. At this time, since the heat sinks 6 and 6 are provided on both surfaces of the vapor chamber 5, the heat transmitted to the vapor chamber 5 is efficiently dissipated by the heat sinks 6 and 6.
Therefore, the LED 3a can be cooled by sufficiently dissipating the heat generated in the high output LED 3a.

また、一対の熱伝導部材７,７の側面７ｃ,７ｃが、ベーパーチャンバ５のＬＥＤ３ａが設けられた下端部側の表面に接触して、当該ベーパーチャンバ５を厚さ方向において挟み込んでいるので、ＬＥＤ３ａで発生する熱の大部分が熱伝導部材７,７を介してベーパーチャンバ５に伝わる。したがって、ＬＥＤ３ａで発生する熱を、より効果的にベーパーチャンバ５の端部から面方向に伝導して、ヒートシンク６,６によって放熱できる。
また、一対の熱伝導部材７,７がベーパーチャンバ５を厚さ方向において挟み込むので、薄いベーパーチャンバ５を安定的に保持できる。
加えて、熱伝導部材７,７の下面７ｂ,７ｂにＬＥＤ基板３ｂが接触しているので、薄いベーパーチャンバ５の端部側に直接ＬＥＤ３ａを配置する場合に比して、ＬＥＤ基板３ｂを安定的に配置できるとともに、ＬＥＤ基板３ｂの配置の自由度が高まる。 Further, since the side surfaces 7c and 7c of the pair of heat conducting members 7 and 7 are in contact with the surface of the vapor chamber 5 on the lower end side where the LED 3a is provided, the vapor chamber 5 is sandwiched in the thickness direction. Most of the heat generated in the LED 3a is transferred to the vapor chamber 5 through the heat conducting members 7 and 7. Therefore, the heat generated in the LED 3 a can be more effectively conducted in the surface direction from the end of the vapor chamber 5 and can be dissipated by the heat sinks 6 and 6.
Further, since the pair of heat conducting members 7 and 7 sandwich the vapor chamber 5 in the thickness direction, the thin vapor chamber 5 can be stably held.
In addition, since the LED substrate 3b is in contact with the lower surfaces 7b, 7b of the heat conducting members 7, 7, the LED substrate 3b is more stable than when the LED 3a is directly disposed on the end side of the thin vapor chamber 5. The degree of freedom of arrangement of the LED substrate 3b is increased.

また、送風ファン１２が、ヒートシンク６の放熱フィン６ｂの並設方向と直交する方向において、ＬＥＤ３ａと逆側に配置されているので、送風ファン１２から送り込まれる風（空気）または送風ファン１２に吸い込まれる空気が、並設された放熱フィン６ｂ,６ｂ間を通るので、より効果的にヒートシンク６,６から熱を放熱できる。   Moreover, since the ventilation fan 12 is arrange | positioned in the direction orthogonal to the parallel arrangement direction of the radiation fin 6b of the heat sink 6, it is suck | inhaled by the wind (air) sent from the ventilation fan 12, or the ventilation fan 12 Since the air to be passed passes between the heat radiating fins 6b, 6b arranged side by side, heat can be radiated from the heat sinks 6, 6 more effectively.

また、開口部２ｇ,２ｇがヒートシンク６の最下段の放熱フィン６ｂの列及び熱伝導部材７に臨んでいるので、送風ファン１２を正方向に回転させることによって、当該送風ファン１２から送り込まれてヒートシンク６を通った空気が開口部２ｇからケーシング２の外部に排出される。また、送風ファン１２を逆方向に回転させることによって、外部の空気が開口部２ｇから入り込んでヒートシンク６を通って、当該送風ファン１２によって外部に排出される。
したがって、ケーシング２内に熱を籠らせることなく、ヒートシンク６から外部に熱を放熱できる。
さらに、この際、熱伝導部材７の側面７ｄ上を空気が流れるので、この空気によって熱伝導部材７を伝わる熱の一部を外部に放熱できる。 Further, since the openings 2g, 2g face the row of the lowermost radiating fins 6b of the heat sink 6 and the heat conducting member 7, the blower fan 12 is fed from the blower fan 12 by rotating in the forward direction. Air passing through the heat sink 6 is discharged from the opening 2g to the outside of the casing 2. Further, by rotating the blower fan 12 in the reverse direction, external air enters through the opening 2g, passes through the heat sink 6, and is discharged to the outside by the blower fan 12.
Therefore, heat can be radiated from the heat sink 6 to the outside without causing heat to flow into the casing 2.
Further, at this time, since air flows on the side surface 7d of the heat conducting member 7, part of the heat transmitted through the heat conducting member 7 can be radiated to the outside by this air.

さらに、光源が、複数のＬＥＤ３ａを列状に配置したライン型光源であるので、ライン型光源に生じる熱を十分に放熱して当該ライン型光源を冷却しつつ、ライン状の高出力の光を照射できる。
また、ヒートシンク６と送風ファン１２との間に、ＬＥＤ３ａや送風ファン１２を制御する制御基板を設ければ、この制御基板で発生する熱を放熱することもできる。 Furthermore, since the light source is a line type light source in which a plurality of LEDs 3a are arranged in a line, the heat generated in the line type light source is sufficiently dissipated to cool the line type light source, and the line type high output light is emitted. Can be irradiated.
If a control board for controlling the LED 3a and the blower fan 12 is provided between the heat sink 6 and the blower fan 12, heat generated by the control board can be radiated.

なお、本実施の形態では、本発明を、樹脂硬化用の紫外線を照射するライン光照射装置に適用した場合を例にとって説明したが、本発明はこれに限ることなく、各種光源を備えた光照射装置に適用することができる。
また、本例では、ヒートシンク６として、薄板状の放熱フィン６ｂを備えたものを一例に挙げたが、円柱状、楕円柱状若しくは多角柱状の放熱フィンを備えた剣山型のヒートシンクとすることもできる。
さらに、熱伝導部材７はベーパーチャンバ５の表裏両面に接触させるのではなく、ベーパーチャンバ５のいずれか一方の面にのみ接触させるようにしても良い。 In this embodiment, the case where the present invention is applied to a line light irradiation apparatus that irradiates ultraviolet rays for resin curing has been described as an example. However, the present invention is not limited thereto, and light with various light sources is provided. It can be applied to an irradiation apparatus.
Further, in this example, the heat sink 6 is provided with a thin plate-like heat radiation fin 6b as an example, but it can also be a sword mountain heat sink having a cylindrical, elliptical or polygonal heat radiation fin. .
Further, the heat conducting member 7 may be brought into contact with only one surface of the vapor chamber 5 instead of contacting the both surfaces of the vapor chamber 5.

１ ライン光照射装置
２ ケーシング
２ｇ 開口部
３ａ ＬＥＤ（光源）
４ 放熱手段
５ ベーパーチャンバ（平板型ヒートパイプ）
６ ヒートシンク
６ｂ 放熱フィン
７ 熱伝導部材
１２ 送風ファン 1 Line light irradiation device 2 Casing 2g Opening 3a LED (light source)
4 Heat dissipation means 5 Vapor chamber (flat plate heat pipe)
6 heat sink 6b heat radiating fin 7 heat conduction member 12 blower fan

Claims (4)

光源と、
前記光源で生じた熱を放熱する放熱手段とを備えた光照射装置であって、
前記放熱手段は、端部側に前記光源が設けられる平板型ヒートパイプと、
前記平板型ヒートパイプの表面に設けられたヒートシンクと、
前記平板型ヒートパイプの前記光源が設けられた端部側の表面に接触して、当該平板型ヒートパイプを厚さ方向において挟み込む熱伝導部材とを備え、
この熱伝導部材に前記光源が接触していることを特徴とする光照射装置。 A light source;
A light irradiating device comprising a heat radiating means for radiating heat generated by the light source,
The heat dissipating means is a flat plate heat pipe provided with the light source on the end side,
A heat sink provided on the surface of the flat plate heat pipe ;
A heat conducting member in contact with the surface of the flat plate heat pipe on the end side where the light source is provided, and sandwiching the flat plate heat pipe in the thickness direction,
The light irradiation apparatus , wherein the heat source is in contact with the light source . 前記光源、平板型ヒートパイプ及びヒートシンクが収容されるケーシングを備え、
前記ケーシングには、前記平板型ヒートパイプの前記光源側とは逆側に送風ファンが設けられ、
前記ヒートシンクは、円柱状、楕円柱状若しくは多角柱状をした複数の放熱フィン、または、前記送風ファンによって生じる空気流に沿うように形成される薄板状をした複数の放熱フィンを備えることを特徴とする請求項１に記載の光照射装置。 A casing in which the light source, the flat plate heat pipe and the heat sink are housed;
The casing is provided with a blower fan on the opposite side to the light source side of the flat plate heat pipe,
The heat sink includes a plurality of heat radiation fins having a cylindrical shape, an elliptical column shape, or a polygonal column shape, or a plurality of thin heat radiation fins formed so as to follow an air flow generated by the blower fan. The light irradiation apparatus according to claim 1 . 前記ケーシングは、前記ヒートシンクに臨む開口部を備えていることを特徴とする請求項２に記載の光照射装置。 The light irradiation apparatus according to claim 2 , wherein the casing includes an opening facing the heat sink. 前記光源が、複数の発光素子を列状に配置したライン型光源であることを特徴とする請求項１〜３のいずれか１項に記載の光照射装置。 It said light source, a light irradiation device according to any one of claims 1 to 3, characterized in that a plurality of light emitting elements is a line-type light sources arranged in a row.
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