JP4812637B2 - Lighting device - Google Patents

Lighting device Download PDF

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JP4812637B2
JP4812637B2 JP2007008469A JP2007008469A JP4812637B2 JP 4812637 B2 JP4812637 B2 JP 4812637B2 JP 2007008469 A JP2007008469 A JP 2007008469A JP 2007008469 A JP2007008469 A JP 2007008469A JP 4812637 B2 JP4812637 B2 JP 4812637B2
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base member
circuit board
printed circuit
flexible printed
light emitting
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JP2008176996A (en
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裕也 瀬下
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Fujikura Ltd
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本発明は、照明装置に関し、特に光源に低耐熱性の発光素子を用いた自動車用照明装置に関する。   The present invention relates to an illuminating device, and more particularly to an automotive illuminating device using a low heat-resistant light emitting element as a light source.

照明装置の光源としては様々な発光素子が使用されているが、そのような発光素子の中には熱に弱いものが存在する。例えば、近年、照明装置の光源として用いられている発光ダイオード（以下、ＬＥＤとする）がある。ＬＥＤは低消費電力で寿命が長いため、照明装置の光源として優れている。   Various light emitting elements are used as the light source of the lighting device, and some of such light emitting elements are vulnerable to heat. For example, in recent years, there is a light emitting diode (hereinafter referred to as LED) that has been used as a light source of a lighting device. Since LEDs have low power consumption and long life, they are excellent as light sources for lighting devices.

しかし、ＬＥＤは、その温度が高くなるほど発光効率が低下するという特性を有している。また高温度下で使用すると、ＬＥＤの寿命も短くなってしまう。そのため、灯具としてＬＥＤを実装する際には放熱対策が必要とされている。従来は、ＬＥＤを実装したフレキシブル基板をフレームに固定する際、固定具として熱伝導性の高い固定具を使用することにより、ＬＥＤの放熱を図っている（特許文献１参照）。   However, the LED has a characteristic that the luminous efficiency decreases as the temperature increases. Further, when used at a high temperature, the life of the LED is shortened. Therefore, when mounting LED as a lamp, a heat dissipation measure is required. Conventionally, when a flexible substrate on which an LED is mounted is fixed to a frame, the LED is radiated by using a fixture having high thermal conductivity as a fixture (see Patent Document 1).

特開２００６−１２８２１４号公報JP 2006-128214 A

しかし、上記特許文献１に係る発明では、フレキシブル基板が大きく多数のＬＥＤを有している場合や、フレームの形状が複雑な場合には、多数の固定具が必要であった。また、フレキシブル基板上に固定具を設置するためのスペースを必要とするため、ＬＥＤやその他の部品の配置の自由度が下がってしまうという問題がある。   However, in the invention according to Patent Document 1, when the flexible substrate has a large number of LEDs or when the shape of the frame is complicated, a large number of fixtures are necessary. Moreover, since the space for installing a fixing tool on a flexible substrate is required, there exists a problem that the freedom degree of arrangement | positioning of LED and another component will fall.

そこで、本発明は、光源として低耐熱性の発光素子を用いた照明装置においても、熱による発光効率の低下が生じない照明装置を提供することを目的とする。   Accordingly, an object of the present invention is to provide an illumination device that does not cause a decrease in light emission efficiency due to heat even in an illumination device that uses a light-emitting element with low heat resistance as a light source.

本発明に係る照明装置は、発光素子が実装されたフレキシブルプリント基板をベース部材に固定する照明装置において、一の方向を向いた一の面と他の方向を向いた他の面が交互に連なることによって階段状に形成されたベース部材と、前記ベース部材の一の面及び他の面それぞれに当接した状態で、その階段形状に沿って前記ベース部材に装着されたフレキシブルプリント基板と、を備え、前記フレキシブルプリント基板上の前記ベース部材の一の面側には、発光素子が実装され、前記他の面側には、前記発光素子以外の他の部品が実装されていることを特徴とする。   An illumination device according to the present invention is an illumination device for fixing a flexible printed circuit board on which a light emitting element is mounted to a base member, wherein one surface facing one direction and another surface facing another direction are alternately arranged. A base member formed in a staircase shape, and a flexible printed circuit board attached to the base member along the staircase shape in contact with one surface and the other surface of the base member. A light emitting element is mounted on one surface side of the base member on the flexible printed circuit board, and other components other than the light emitting element are mounted on the other surface side. To do.

また、本発明に係る照明装置は、発光素子が実装されたフレキシブルプリント基板をベース部材に固定する照明装置において、表面部と裏面部からなる平板状に形成されたベース部材と、前記ベース部材の表面部及び裏面部それぞれに当接した状態で、その平板形状に沿って前記ベース部材に装着されたフレキシブルプリント基板と、を備え、前記フレキシブルプリント基板上の前記ベース部材の表面部側には、発光素子が実装され、前記裏面部側には、前記発光素子以外の他の部品が実装されていることを特徴とする。   Moreover, the lighting device according to the present invention is a lighting device for fixing a flexible printed circuit board on which a light emitting element is mounted to a base member, a base member formed in a flat plate shape having a front surface portion and a back surface portion, and the base member A flexible printed circuit board mounted on the base member along the flat plate shape in a state of being in contact with each of the front surface part and the back surface part, and on the surface part side of the base member on the flexible printed circuit board, A light emitting element is mounted, and other parts other than the light emitting element are mounted on the back surface side.

さらに、本発明に係る照明装置は、発光素子が実装されたフレキシブルプリント基板をベース部材に固定する照明装置において、一の方向を向いた一の面と他の方向を向いた他の面が交互に連なることによって階段状に形成されたベース部材と、前記ベース部材の一の面及び他の面それぞれに当接するとともに、前記ベース部材の一の面の裏面及び他の面の裏面それぞれに当接した状態で、その階段形状に沿って装着されたフレキシブルプリント基板と、を備え、前記フレキシブルプリント基板上の前記ベース部材の一の面及び他の面の少なくとも一方には、発光素子が実装され、前記ベース部材の一の面の裏面及び他の面の裏面の少なくとも一方には、前記発光素子以外の他の部品が実装されていることを特徴とする。   Furthermore, in the lighting device according to the present invention, in the lighting device for fixing the flexible printed circuit board on which the light emitting element is mounted to the base member, one surface facing one direction and the other surface facing the other direction are alternated. The base member is formed in a stepped shape by being connected to the base member, and contacts one surface and the other surface of the base member, and contacts the back surface of the one surface of the base member and the back surface of the other surface. A flexible printed circuit board mounted along the staircase shape, and a light emitting element is mounted on at least one of the one surface and the other surface of the base member on the flexible printed circuit board, A component other than the light emitting element is mounted on at least one of the back surface of the one surface of the base member and the back surface of the other surface.

本発明に係る照明装置によれば、ベース部材に固定されたフレキシブルプリント基板上において、発光素子とその他の実装部品は異なる面に位置することとなり、発光素子以外の実装部品の熱により発光素子が影響を受けることがない。そして、多くの固定具を必要としない単純な構成で、曲面や平面に沿った形で発光素子を配置することができる。また、発光素子実装部分には発光素子以外の他の実装部品が位置しないこととなり、外部部品の取り付けが容易になる。   According to the lighting device of the present invention, the light emitting element and other mounting components are located on different surfaces on the flexible printed board fixed to the base member, and the light emitting elements are heated by the heat of the mounting components other than the light emitting elements. Not affected. In addition, the light emitting elements can be arranged along a curved surface or a plane with a simple configuration that does not require many fixtures. In addition, other mounting components other than the light emitting device are not located in the light emitting device mounting portion, and attachment of external components is facilitated.

また、本発明に係る照明装置のベース部材は、例えばアルミニウム等の熱伝導性の高い素材で構成されていても良く、フレキシブルプリント基板をベース部材に固定する際の接着材料に例えばシリコーンゴム接着剤やエポキシ樹脂接着剤等の熱伝導性の高い材料を使用しても良い。また、ベース部材は放熱装置を有していても良い。これにより効率よく放熱を行うことができ、熱によるＬＥＤの発光効率の低下や、短寿命化を防ぐことができる。   Further, the base member of the lighting device according to the present invention may be made of a material having high thermal conductivity such as aluminum, and a silicone rubber adhesive is used as an adhesive material when fixing the flexible printed circuit board to the base member. Alternatively, a material having high thermal conductivity such as an epoxy resin adhesive may be used. The base member may have a heat dissipation device. As a result, heat can be efficiently radiated, and a decrease in the light emission efficiency of the LED due to heat and a shortening of the lifetime can be prevented.

本発明によれば、光源として低耐熱性の発光素子を用いた照明装置においても、熱による発光効率の低下が生じない照明装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the illuminating device which does not produce the fall of the luminous efficiency by a heat | fever can be provided also in the illuminating device using the low heat resistant light emitting element as a light source.

次に、本発明に係る照明装置の第１の実施の形態を図面に基づいて説明する。   Next, a first embodiment of a lighting device according to the present invention will be described with reference to the drawings.

図１は、第１の実施の形態に係る照明装置の構成を示す斜視図である。第１の実施の形態に係る照明装置は、一の方向を向いた一の面１０Ａと他の方向を向いた他の面１０Ｂが交互に連なることによって階段状に形成されたベース部材１０と、ベース部材１０の一の面１０Ａ及び他の面１０Ｂそれぞれに当接した状態で、その階段形状に沿ってベース部材１０に装着されたフレキシブルプリント基板２０を有している。そして、フレキシブルプリント基板２０上のベース部材の面１０Ａ側には、発光素子であるＬＥＤ３０が実装され、他の面１０Ｂ側には、発光素子以外の他の部品４０が実装されている。   FIG. 1 is a perspective view showing the configuration of the illumination device according to the first embodiment. The lighting device according to the first embodiment includes a base member 10 formed in a step shape by alternately connecting one surface 10A facing one direction and another surface 10B facing the other direction, It has the flexible printed circuit board 20 with which the base member 10 was mounted | worn in the state contact | abutted to one surface 10A and the other surface 10B of the base member 10 along the step shape. And LED30 which is a light emitting element is mounted in the surface 10A side of the base member on the flexible printed circuit board 20, and other components 40 other than a light emitting element are mounted in the other surface 10B side.

階段状に形成されたベース部材１０は、例えばアルミニウムで構成されており、ＬＥＤ等が実装されているフレキシブルプリント基板２０が例えばシリコーンゴム接着剤により直接固定される。   The base member 10 formed in a step shape is made of, for example, aluminum, and the flexible printed circuit board 20 on which the LED or the like is mounted is directly fixed by, for example, a silicone rubber adhesive.

第１の実施の形態に係る照明装置において、ＬＥＤ３０は発光すると熱を帯びる。ここで、ＬＥＤ３０は、フレキシブルプリント基板２０上に実装されている他の部品４０とは別の面（ベース部材の１０Ａ側）に位置しているため、抵抗等の熱の影響を受けにくくなる。また、ＬＥＤ３０が実装されているフレキシブルプリント基板２０は、熱伝導性の高いアルミニウムで形成されているベース部材１０に直接固定されているため、ＬＥＤ３０やその他の部品４０の熱はベース部材１０を介して放熱される。また、フレキシブルプリント基板２０の固定に使用されているシリコーンゴム接着剤も熱伝導性に優れているため、ＬＥＤ３０等の熱は効率よく放熱される。   In the illumination device according to the first embodiment, the LED 30 is heated when it emits light. Here, since LED30 is located in the surface (10A side of a base member) different from the other components 40 mounted on the flexible printed circuit board 20, it becomes difficult to receive the influence of heat, such as resistance. Further, since the flexible printed circuit board 20 on which the LEDs 30 are mounted is directly fixed to the base member 10 formed of aluminum having high thermal conductivity, the heat of the LEDs 30 and other components 40 passes through the base member 10. To dissipate heat. Moreover, since the silicone rubber adhesive used for fixing the flexible printed circuit board 20 is also excellent in thermal conductivity, the heat of the LED 30 and the like is efficiently radiated.

また、フレキシブルプリント基板２０上のＬＥＤ実装面はＬＥＤ３０のみが実装されることとなり、ＬＥＤ３０を除いては平面である。このため、レンズやリフレクター等の外部部品の取り付けが容易となる。また、ＬＥＤの配置等の設計の自由度も向上させることができる。   Further, only the LED 30 is mounted on the LED mounting surface on the flexible printed circuit board 20 and is a flat surface except for the LED 30. For this reason, attachment of external parts, such as a lens and a reflector, becomes easy. Moreover, the freedom degree of design, such as arrangement | positioning of LED, can also be improved.

このように、本実施の形態に係る照明装置においては、ＬＥＤ３０は他の実装部品４０からの熱による影響を受けにくく、また、ベース部材１０や接着材料に熱伝導性の良い材料を使用しているため、放熱効率が良い。このため、ＬＥＤ３０に熱による負担をかけることがない。そして、多くの固定具を使用することがないので、曲面に沿ってＬＥＤが配置される照明装置を単純な構成で提供することができる。   Thus, in the lighting device according to the present embodiment, the LED 30 is not easily affected by heat from the other mounting components 40, and a material having good thermal conductivity is used for the base member 10 and the adhesive material. Therefore, heat dissipation efficiency is good. For this reason, the LED 30 is not burdened by heat. And since many fixing tools are not used, the illuminating device by which LED is arrange | positioned along a curved surface can be provided with a simple structure.

次に、本発明に係る照明装置の第２の実施の形態を図面に基づいて説明する。   Next, 2nd Embodiment of the illuminating device based on this invention is described based on drawing.

図２は、第２の実施の形態に係る照明装置の構成を示す斜視図である。第２の実施の形態に係る照明装置は、表面部１１Ａと裏面部１１Ｂからなる平板状に形成されたベース部材１１と、ベース部材の表面部１１Ａ及び裏面部１１Ｂそれぞれに当接した状態で、その平板形状に沿ってベース部材１１に装着されたフレキシブルプリント基板２１を有している。第２の実施の形態において、フレキシブルプリント基板２１上のベース部材の表面部１１Ａ側には、ＬＥＤ３１が実装され、裏面部１１Ｂ側には、発光素子以外の他の部品４１が実装されている。ベース部材１１の材料や、接着材料等の構成は第１の実施の形態と同様である。   FIG. 2 is a perspective view showing the configuration of the illumination device according to the second embodiment. The lighting device according to the second embodiment is in a state of contacting the base member 11 formed in a flat plate shape including the front surface portion 11A and the back surface portion 11B, and the front surface portion 11A and the back surface portion 11B of the base member, respectively. The flexible printed circuit board 21 is mounted on the base member 11 along the flat plate shape. In the second embodiment, an LED 31 is mounted on the front surface portion 11A side of the base member on the flexible printed circuit board 21 and a component 41 other than the light emitting element is mounted on the back surface portion 11B side. The structure of the base member 11 and the adhesive material are the same as those in the first embodiment.

第２の実施の形態に係る照明装置においても、ＬＥＤ３１とその他の実装部品４１は別の面に位置することとなるため、ＬＥＤ３１は熱の影響を受けにくい。また、ＬＥＤ３１が発光して熱を帯びると、ＬＥＤ３１の熱及びその他の実装部品４１の熱はベース部材１１を介して放熱される。第２の実施の形態においては、ＬＥＤ設置面は平板状のベース部材１１の表面部に位置するため、レンズやリフレクター等の外部部品の取り付けがさらに容易となる。また、ＬＥＤの配置等の設計の自由度も向上させることができ、このような照明装置を単純な構成で提供することができる。   Also in the illumination device according to the second embodiment, the LED 31 and the other mounting components 41 are located on different surfaces, and therefore the LED 31 is not easily affected by heat. Further, when the LED 31 emits light and is heated, the heat of the LED 31 and the heat of the other mounting components 41 are radiated through the base member 11. In the second embodiment, since the LED installation surface is located on the surface portion of the flat base member 11, it is easier to attach external components such as lenses and reflectors. In addition, the degree of freedom of design such as the arrangement of LEDs can be improved, and such a lighting device can be provided with a simple configuration.

次に、本発明に係る照明装置の第３の実施の形態を図面に基づいて説明する。   Next, the 3rd Embodiment of the illuminating device based on this invention is described based on drawing.

図３は、第３の実施の形態に係る照明装置の構成を示す斜視図である。第３の実施の形態に係る照明装置は、一の方向を向いた一の面１２Ａと他の方向を向いた他の面１２Ｂが交互に連なることによって階段状に形成されたベース部材１２と、ベース部材１２の一の面１２Ａ及び他の面１２Ｂそれぞれに当接するとともに、ベース部材１２の一の面の裏面１２Ｃ及び他の面の裏面１２Ｄそれぞれに当接した状態で、その階段形状に沿って装着されたフレキシブルプリント基板２２を有している。本実施の形態においては、フレキシブルプリント基板２２上のベース部材の一の面１２ＡにＬＥＤ３２が実装され、一の面の裏面１２Ｃ及び他の面の裏面１２Ｄに発光素子以外の他の部品４２が実装されている。ベース部材の材料や、接着材料等の構成は第１の実施の形態と同様である。   FIG. 3 is a perspective view showing a configuration of a lighting apparatus according to the third embodiment. The lighting device according to the third embodiment includes a base member 12 formed in a step shape by alternately connecting one surface 12A facing one direction and another surface 12B facing the other direction, In contact with each of one surface 12A and the other surface 12B of the base member 12, and in contact with each of the back surface 12C of the one surface of the base member 12 and the back surface 12D of the other surface, along the step shape. A flexible printed circuit board 22 is mounted. In the present embodiment, the LED 32 is mounted on one surface 12A of the base member on the flexible printed circuit board 22, and other components 42 other than the light emitting elements are mounted on the back surface 12C on one surface and the back surface 12D on the other surface. Has been. The configuration of the base member material, the adhesive material, and the like are the same as those in the first embodiment.

第３の実施の形態に係る照明装置において、ＬＥＤ３２とその他の実装部品４２は階段状のベース部材１２の表裏に位置することとなるため、ＬＥＤ３２はその他の実装部品４２の熱の影響を受けにくい。また、ＬＥＤ３２及びその他の実装部品４２の熱はベース部材１２を介して放熱される。本実施の形態においては、階段状に形成されたベース部材１２の裏面１２Ｃ及び１２Ｄの側にその他の実装部品を配置することにより、レンズやリフレクター等の外部部品の取り付けが第１の実施の形態よりもさらに容易となる。   In the lighting device according to the third embodiment, the LEDs 32 and the other mounting components 42 are positioned on the front and back of the step-like base member 12, so that the LEDs 32 are not easily affected by the heat of the other mounting components 42. . Further, the heat of the LEDs 32 and other mounting components 42 is radiated through the base member 12. In the present embodiment, the mounting of external components such as a lens and a reflector is performed in the first embodiment by arranging other mounting components on the back surfaces 12C and 12D side of the base member 12 formed in a staircase shape. Even easier.

以上、本発明の実施の形態を説明したが、本発明はこれらに限定されるものではなく、発明の趣旨を逸脱しない範囲内において、種々の変更、追加等が可能である。   As mentioned above, although embodiment of this invention was described, this invention is not limited to these, A various change, addition, etc. are possible in the range which does not deviate from the meaning of invention.

例えば、ベース部材に使用する素材としてアルミニウムを挙げたが、これは金属等の熱伝導性の高い材料であれば良い。フレキシブルプリント基板のベース部材への固定に用いられる熱伝導性に優れた接着剤には、シリコーンゴム接着剤の他に、エポキシ系素材の接着剤や、これらに金属フィラーを配合したもの等が考えられる。また、接着剤の他に両面テープ、接着シート等を用いても良い。そして、抵抗等の特に高い熱を発する箇所のベース部分には、ヒートシンクやヒートパイプ、ファン等の放熱装置を設置しても良い。   For example, although aluminum was mentioned as a raw material used for a base member, this should just be a material with high heat conductivity, such as a metal. The adhesive with excellent thermal conductivity used for fixing the flexible printed circuit board to the base member may be an epoxy-based material adhesive or a compound containing a metal filler in addition to the silicone rubber adhesive. It is done. Moreover, you may use a double-sided tape, an adhesive sheet, etc. other than an adhesive agent. Further, a heat radiating device such as a heat sink, a heat pipe, or a fan may be installed in a base portion where a particularly high heat such as resistance is generated.

本発明の第１の実施の形態の構成を示す斜視図である。It is a perspective view which shows the structure of the 1st Embodiment of this invention. 本発明の第２の実施の形態の構成を示す斜視図である。It is a perspective view which shows the structure of the 2nd Embodiment of this invention. 本発明の第３の実施の形態の構成を示す斜視図である。It is a perspective view which shows the structure of the 3rd Embodiment of this invention.

符号の説明Explanation of symbols

１０、１１、１２・・・ベース部材、 ２０、２１、２２・・・フレキシブルプリント基板、 ３０、３１、３２・・・発光ダイオード、 ４０、４１、４２・・・その他の部品 10, 11, 12 ... base member, 20, 21, 22 ... flexible printed circuit board, 30, 31, 32 ... light emitting diode, 40, 41, 42 ... other components

Claims (5)

発光素子が実装されたフレキシブルプリント基板をベース部材に固定する照明装置において、
一の方向を向いた一の面と他の方向を向いた他の面が交互に連なることによって階段状に形成されたベース部材と、
前記ベース部材の一の面及び他の面それぞれに当接した状態で、その階段形状に沿って前記ベース部材に装着されたフレキシブルプリント基板と、を備え、
前記フレキシブルプリント基板上の前記ベース部材の一の面側には、発光素子が実装され、前記他の面側には、前記発光素子以外の他の部品が実装されていることを特徴とする照明装置。 In the lighting device for fixing the flexible printed circuit board on which the light emitting element is mounted to the base member,
A base member formed in a step shape by alternately connecting one surface facing one direction and another surface facing the other direction;
A flexible printed circuit board mounted on the base member along the staircase shape in contact with one surface and the other surface of the base member, and
A light emitting element is mounted on one surface side of the base member on the flexible printed circuit board, and another component other than the light emitting element is mounted on the other surface side. apparatus. 前記ベース部材は、熱伝導性の高い素材で構成されたことを特徴とする請求項１記載の照明装置。 The base member, the lighting apparatus according to claim 1, characterized in that it is constituted by a high thermal conductivity material. 前記ベース部材は、アルミニウムにより構成されたことを特徴とする請求項１記載の照明装置。 The base member, the lighting apparatus according to claim 1, characterized in that it is made of aluminum. 熱伝導性の高い接着材料により前記ベース部材に前記フレキシブルプリント基板が固定されていることを特徴とする請求項１ないし３いずれか記載の照明装置。 I claim 1, wherein the flexible printed circuit board is fixed to the base member by a high adhesive heat conductive material 3 lighting device according to any one. 前記ベース部材は、放熱装置を有することを特徴とする請求項１ないし４いずれか記載の照明装置。 The base member has an illumination device according to any one of claims 1 to 4, characterized in that it has a heat dissipation device.
JP2007008469A 2007-01-17 2007-01-17 Lighting device Expired - Fee Related JP4812637B2 (en)

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