JP6504285B2 - Lighting device - Google Patents

Lighting device Download PDF

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JP6504285B2
JP6504285B2 JP2018024895A JP2018024895A JP6504285B2 JP 6504285 B2 JP6504285 B2 JP 6504285B2 JP 2018024895 A JP2018024895 A JP 2018024895A JP 2018024895 A JP2018024895 A JP 2018024895A JP 6504285 B2 JP6504285 B2 JP 6504285B2
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heat
transfer sheet
heat transfer
display unit
dissipation member
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JP2018110123A (en
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孝紀 茂野
孝紀 茂野
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Description

本発明は、発熱部品を有する表示ユニットから発生する熱を外部に拡散するための放熱部材および伝熱シートを備えた照明装置に関する。   The present invention relates to a heat dissipating member for diffusing heat generated from a display unit having a heat generating component to the outside, and a lighting device including a heat transfer sheet.

従来、発熱部品を有する表示ユニットから発生する熱を外部に拡散するための放熱部材および伝熱シートを備えた照明装置において、伝熱シートの装着忘れや貼付位置のずれを確認できるようにする技術が、特許文献１に開示されている。   In the related art, in a lighting device including a heat dissipation member and a heat transfer sheet for diffusing heat generated from a display unit having a heat generating component to the outside, a technique for enabling confirmation of attachment failure of a heat transfer sheet and displacement of a sticking position. Patent Document 1 discloses this.

特開２００６−３３０５８７号公報Unexamined-Japanese-Patent No. 2006-330587

しかしながら、特許文献１に開示されている技術は、貼付位置のずれを確認することはできるが、組み付け性において改善の余地があった。   However, the technique disclosed in Patent Document 1 can confirm the displacement of the sticking position, but there is room for improvement in the assemblability.

本発明は、上記実情に鑑みてなされたものであり、伝熱シートの組み付け性がよい放熱部材を備えた照明装置を提供することを目的とする。   This invention is made in view of the said situation, and an object of this invention is to provide the illuminating device provided with the thermal radiation member with the good attachment property of a heat-transfer sheet.

本発明に係る照明装置Ａは、
発熱部品２１を有する回路基板２と、前記発熱部品２１から発生する熱を放散させる放熱部材１と、この放熱部材１と前記回路基板２との間に装着された伝熱シート３と、を備え、
前記放熱部材１は、前記伝熱シート３の装着方向を特定する辺１１０を有する取付溝１１を有し、
前記伝熱シート３は、前記装着方向を特定する辺１１０に対応する形状を有し、
前記装着方向を特定する辺１１０は、端部にいくほど幅狭となる凸または凹形状を有する。
The lighting device A according to the present invention is
A circuit board 2 having a heat generating component 21, a heat radiating member 1 for dissipating heat generated from the heat generating component 21, and a heat conductive sheet 3 mounted between the heat radiating member 1 and the circuit substrate 2 ,
The heat dissipation member 1 has a mounting groove 11 having a side 110 for specifying the mounting direction of the heat transfer sheet 3;
The heat transfer sheet 3 have a shape corresponding to the side 110 for specifying the mounting direction,
The side 110 for specifying the mounting direction has a convex or concave shape that narrows toward the end.

本発明によれば、伝熱シートの組み付け性がよい放熱部材を備えた照明装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the illuminating device provided with the thermal radiation member with the good attachment property of a heat-transfer sheet can be provided.

本発明の実施形態に係る照明装置の表示ユニット構成図。The display unit block diagram of the illuminating device which concerns on embodiment of this invention. 本発明の実施形態に係る照明装置の放熱部材の取付溝の上面図およびＢ−Ｂ断面図。The top view and BB sectional drawing of the attachment groove of the thermal radiation member of the illuminating device which concerns on embodiment of this invention. 本発明の実施形態に係る照明装置の放熱部品の取付溝の変形例を示す図。The figure which shows the modification of the attachment groove of the thermal radiation components of the illuminating device which concerns on embodiment of this invention.

以下、添付図面に基づいて、本発明の実施形態を説明する。   Hereinafter, an embodiment of the present invention will be described based on the attached drawings.

本発明に係る照明装置Ａは、放熱部材１と、ＬＥＤ（発熱部品）２１を実装した表示ユニット２と、伝熱シート３とを備える。   A lighting device A according to the present invention includes a heat dissipation member 1, a display unit 2 on which an LED (heat generating component) 21 is mounted, and a heat transfer sheet 3.

放熱部材１は、例えば、アルミニウムなどの金属を金型鋳造したヒートシンクからなり、表示ユニット２を螺子固定するための螺子孔１０と、伝熱シート３を装着するための取付溝１１が形成されている。   The heat dissipating member 1 is, for example, a heat sink obtained by die-casting a metal such as aluminum, and is formed with screw holes 10 for screwing the display unit 2 and mounting grooves 11 for mounting the heat transfer sheet 3. There is.

放熱部材１と、表示ユニット２と、伝熱シート３には、それぞれ対応する螺子孔１０，２０，３０を有しており、放熱部材１の取付溝１１に伝熱シート３を貼り付けた後、表示ユニットのＬＥＤ２１が実装されている面の裏面を伝熱シート３に重ねて、放熱部材１に表示ユニット２が螺子固定される。このように、伝熱シート３を挟んで表示ユニット２が放熱部材１に螺子固定されることにより、放熱部材１と表示ユニット２とが互いに密着して接触熱抵抗を小さくして効率良く放熱される。   The heat dissipation member 1, the display unit 2, and the heat transfer sheet 3 have screw holes 10, 20 and 30 respectively corresponding thereto, and after the heat transfer sheet 3 is attached to the mounting groove 11 of the heat dissipation member 1. The display unit 2 is screw-fixed to the heat dissipation member 1 by overlapping the back surface of the surface on which the LED 21 of the display unit is mounted on the heat transfer sheet 3. Thus, the display unit 2 is screwed to the heat dissipation member 1 with the heat transfer sheet 3 interposed therebetween, so that the heat dissipation member 1 and the display unit 2 are in close contact with each other to reduce contact thermal resistance and efficiently dissipate heat. Ru.

表示ユニット２は、例えば、ＬＥＤ（Light Emitting Diode）２１が実装された回路基板であって、フラットケーブル２２を介して電源供給されると、ＬＥＤ２１が光輝する配線が形成されている。   The display unit 2 is, for example, a circuit board on which an LED (Light Emitting Diode) 21 is mounted, and when power is supplied via the flat cable 22, a wiring is formed to illuminate the LED 21.

伝熱シート３は、熱伝導性や電気絶縁性に優れたシート状の樹脂からなり、放熱部材１に表示ユニット２を螺子で固定する際に、間に介在することで互いの密着性を高める効果を得るものである。   The heat transfer sheet 3 is made of a sheet-like resin excellent in heat conductivity and electrical insulation, and when the display unit 2 is fixed to the heat dissipation member 1 with a screw, the heat transfer sheet 3 is interposed between the heat transfer sheets 3 to improve the mutual adhesion. Get the effect.

放熱部材１の取付溝１１は、図２（ａ）に示すように、端部にいくほど幅狭となる案内辺１１０を有する溝が形成されている。また、伝熱シート３は、この案内辺１１０に対応する形状を有し、伝熱シート３をこの取付溝１１の案内辺１１０に沿わせて、取付溝１１に装着される。   As shown in FIG. 2A, the mounting groove 11 of the heat dissipation member 1 is formed with a groove having a guide side 110 whose width becomes narrower toward the end. The heat transfer sheet 3 has a shape corresponding to the guide side 110, and is attached to the mounting groove 11 with the heat transfer sheet 3 along the guide side 110 of the mounting groove 11.

このように構成することで、伝熱シート３が取付溝１１に案内されて、放熱部材１の適切な位置に貼り付けることができる。   By configuring in this manner, the heat transfer sheet 3 can be guided by the mounting groove 11 and attached to the heat dissipation member 1 at an appropriate position.

また、放熱部材１の取付溝１１は、図２（ｂ）に示すように、端部にいくほど溝が深くなるような緩やかな傾斜溝とすることで、伝熱シート３が案内辺１１０に案内されやすくなる。   Further, as shown in FIG. 2 (b), the heat transfer sheet 3 is attached to the guide side 110 by forming the attachment groove 11 of the heat dissipation member 1 as a gently inclined groove in which the groove becomes deeper as it goes to the end. It becomes easy to be guided.

また、案内辺１１０は、図３に示すように、端部にいくほど幅狭となる中心線Ｃで対称な形状（図３の（ａ））や、中心線Ｃで対称な凹形状（図３の（ｂ））や、中心線Ｃで対称な凸形状（図３の（ｃ））などの変形をしてもよい。
図３の形状は、それぞれ案内辺１１０へ伝熱シート３を沿わせると、案内溝１１の中央に伝熱シート３が案内される。 Further, as shown in FIG. 3, the guide side 110 has a symmetrical shape (FIG. 3 (a)) at the center line C whose width becomes narrower toward the end (FIG. 3) or a concave shape symmetrical at the center line C (FIG. 3 (b) or convex shapes symmetrical with respect to the center line C ((c) in FIG. 3) may be modified.
In the shape of FIG. 3, when the heat transfer sheet 3 is placed along the guide side 110, the heat transfer sheet 3 is guided to the center of the guide groove 11.

上述した照明装置Ａは、例えば、表示ユニット２が照射する光を背面に受けて画素単位で透過／不透過する液晶パネルと組み合わせた液晶照明装置に適用することができる。
また、照明装置Ａは、放熱部材１の一部が露出するように表示ユニット２を覆う筐体を備えて、表示ユニット２は発する熱を放熱部材１によって筐体外に放散する構成としてもよい The above-described lighting device A can be applied to, for example, a liquid crystal lighting device combined with a liquid crystal panel that receives light emitted by the display unit 2 on the back surface and transmits or does not transmit light in pixel units.
In addition, the lighting device A may include a housing that covers the display unit 2 so that a part of the heat dissipation member 1 is exposed, and the display unit 2 may be configured to dissipate the heat generated outside the housing by the heat dissipation member 1

以上の説明では、本発明の理解を容易にするために、重要でない公知の技術的事項の説明を適宜省略した。   In the above description, in order to facilitate the understanding of the present invention, the description of the unimportant well-known technical matters is appropriately omitted.

Ａ ：照明装置
１ ：放熱部材
１０ ：螺子孔
１１ ：取付溝
１１０ ：案内辺
２ ：表示ユニット
２０ ：螺子孔
２１ ：ＬＥＤ（発熱部品）
２２ ：フラットケーブル
３ ：伝熱シート
３０ ：螺子孔
Ｃ ：中心線 A: Lighting device 1: Heat dissipation member 10: Screw hole 11: Mounting groove 110: Guide side 2: Display unit 20: Screw hole 21: LED (heat-generating component)
22: Flat cable 3: Heat transfer sheet 30: Screw hole C: Center line

Claims (1)

発熱部品を有する回路基板と、前記発熱部品から発生する熱を放散させる放熱部材と、この放熱部材と前記回路基板との間に装着された伝熱シートと、を備え、
前記放熱部材は、前記伝熱シートの装着方向を特定する辺を有する取付溝を有し、
前記伝熱シートは、前記装着方向を特定する辺に対応する形状を有し、
前記装着方向を特定する辺は、端部にいくほど幅狭となる凸または凹形状を有する
ことを特徴とする照明装置。
A circuit board having a heat generating component, a heat radiating member for dissipating heat generated from the heat generating component, and a heat transfer sheet mounted between the heat radiating member and the circuit substrate.
The heat dissipation member has a mounting groove having a side that specifies the mounting direction of the heat transfer sheet,
The heat transfer sheet have a shape corresponding to the side for identifying the mounting direction,
The illumination device according to claim 1, wherein the side that specifies the mounting direction has a convex or concave shape that narrows toward the end .
JP2018024895A 2018-02-15 2018-02-15 Lighting device Active JP6504285B2 (en)

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JP2014145513A Division JP6300023B2 (en) 2014-07-16 2014-07-16 Lighting device

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JP6504285B2 true JP6504285B2 (en) 2019-04-24

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5285417B2 (en) * 2008-12-22 2013-09-11 パナソニック株式会社 Lighting device
JP4828639B2 (en) * 2010-02-08 2011-11-30 シャープ株式会社 Lighting device

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