JP6242590B2 - 放熱構造体及び放熱構造体の製造方法 - Google Patents
放熱構造体及び放熱構造体の製造方法 Download PDFInfo
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- JP6242590B2 JP6242590B2 JP2013107466A JP2013107466A JP6242590B2 JP 6242590 B2 JP6242590 B2 JP 6242590B2 JP 2013107466 A JP2013107466 A JP 2013107466A JP 2013107466 A JP2013107466 A JP 2013107466A JP 6242590 B2 JP6242590 B2 JP 6242590B2
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- heat dissipation
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Description
Claims (8)
- 熱伝導性を有する金属部材と、熱伝導性を有する樹脂製放熱部材とを備える放熱構造体であって、
前記金属部材は、熱源からの熱を受熱可能な受熱部を有し、
前記樹脂製放熱部材は、前記金属部材に射出成形により一体成形されており、前記受熱部と熱的に接触して設けられており、
前記金属部材は、前記受熱部が設けられた第1の面と、前記第1の面と異なる方向を向く第2の面と、前記第1の面から前記第2の面に亘って貫通する複数の貫通孔とを有し、
前記樹脂製放熱部材は、前記第1の面側に設けられた係止部と、前記第2の面側に突出して設けられた複数の放熱フィン部と、前記貫通孔を介して前記係止部と各放熱フィン部とを連結する連結部とを有し、
前記連結部は、前記放熱フィン部の長手方向の少なくとも両端部に設けられており、
前記樹脂製放熱部材は、熱伝導率に異方性を付与する長尺形状の熱伝導率調整材を含有しており、前記放熱フィン部における該熱伝導率調整材の向きが該放熱フィン部の突出方向に沿って整列されている
ことを特徴とする放熱構造体。 - 前記第1の面側に設けられた前記係止部に、複数の放熱部が突出して設けられる
ことを特徴とする請求項1に記載の放熱構造体。 - 熱伝導性を有する金属部材と、熱伝導性を有する樹脂製放熱部材とを備える放熱構造体であって、
前記金属部材は、熱源からの熱を受熱可能な受熱部を有し、
前記樹脂製放熱部材は、前記金属部材に射出成形により一体成形されており、前記受熱部と熱的に接触して設けられており、
前記金属部材は、前記受熱部が設けられた第1の面と、前記第1の面と異なる方向を向く第2の面と、前記第1の面から前記第2の面に亘って貫通する複数の貫通孔とを有し、
前記樹脂製放熱部材は、前記第1の面側に設けられた第1係止部と、前記第2の面側に設けられた第2係止部と、前記貫通孔を介して前記第1係止部と前記第2係止部とを連結する連結部とを有し、
前記第1係止部及び前記第2係止部の少なくとも一方に、複数の放熱フィン部が突出して設けられており、
前記連結部は、前記放熱フィン部の長手方向の少なくとも両端部に設けられており、
前記樹脂製放熱部材は、熱伝導率に異方性を付与する長尺形状の熱伝導率調整材を含有しており、前記放熱フィン部における該熱伝導率調整材の向きが該放熱フィン部の突出方向に沿って整列されている
ことを特徴とする放熱構造体。 - 前記金属部材の前記受熱部以外の領域が、前記樹脂製放熱部材によって包囲されている
ことを特徴とする請求項1〜3いずれか1項に記載の放熱構造体。 - 熱伝導性を有する金属部材と、熱伝導性を有する樹脂製放熱部材とを備える放熱構造体を射出成形により成形する放熱構造体の製造方法であって、
前記金属部材を金型内に配置させる配置工程と、
前記金属部材における熱源からの熱を受熱可能な受熱部となる領域を被覆した状態において、前記金型内に樹脂材料を充填させ、前記金属部材に前記樹脂製放熱部材を一体成形させる成形工程とを備え、
前記配置工程は、前記受熱部が設けられる第1の面と、前記第1の面と異なる方向を向く第2の面と、前記第1の面から前記第2の面に亘って貫通する複数の貫通孔とを有する金属部材を金型内に配置させる工程であり、
前記成形工程は、前記金属部材の前記第1の面の前記受熱部となる領域を被覆した状態において前記金型内に樹脂材料を充填させ、前記金属部材に、前記第1の面側に設けられた係止部と、前記第2の面側に突出して設けられた複数の放熱フィン部と、前記貫通孔を介して前記係止部と各放熱フィン部とを連結する連結部とを有し、該連結部が前記放熱フィン部の長手方向の少なくとも両端部に設けられた樹脂製放熱部材を一体成形させる工程であり、
前記樹脂材料は、熱伝導率に異方性を付与する長尺形状の熱伝導率調整材を含有しており、
前記成形工程は、前記金型内に前記樹脂材料を充填させる際に、前記金型内のキャビティ容積を前記放熱フィン部の突出方向に変動させ、前記樹脂材料を該突出方向に流動させることにより、前記熱伝導率調整材の向きを前記放熱フィン部の突出方向に沿って整列させる変動工程を更に備える
ことを特徴とする放熱構造体の製造方法。 - 熱伝導性を有する金属部材と、熱伝導性を有する樹脂製放熱部材とを備える放熱構造体を射出成形により成形する放熱構造体の製造方法であって、
前記金属部材を金型内に配置させる配置工程と、
前記金属部材における熱源からの熱を受熱可能な受熱部となる領域を被覆した状態において、前記金型内に樹脂材料を充填させ、前記金属部材に前記樹脂製放熱部材を一体成形させる成形工程とを備え、
前記配置工程は、前記受熱部が設けられる第1の面と、前記第1の面と異なる方向を向く第2の面と、前記第1の面から前記第2の面に亘って貫通する複数の貫通孔とを有する金属部材を金型内に配置させる工程であり、
前記成形工程は、前記金属部材の前記第1の面の前記受熱部となる領域を被覆した状態において前記金型内に樹脂材料を充填させ、前記金属部材に、前記第1の面側に設けられた第1係止部と、前記第2の面側に設けられた第2係止部と、前記貫通孔を介して前記第1係止部と前記第2係止部とを連結する連結部と、前記第1係止部及び前記第2係止部の少なくとも一方に設けられた複数の放熱フィン部とを有し、該連結部が前記放熱フィン部の長手方向の少なくとも両端部に設けられた樹脂製放熱部材を一体成形させる工程であり、
前記樹脂材料は、熱伝導率に異方性を付与する長尺形状の熱伝導率調整材を含有しており、
前記成形工程は、前記金型内に前記樹脂材料を充填させる際に、前記金型内のキャビティ容積を前記放熱フィン部の突出方向に変動させ、前記樹脂材料を該突出方向に流動させることにより、前記熱伝導率調整材の向きを前記放熱フィン部の突出方向に沿って整列させる変動工程を更に備える
ことを特徴とする放熱構造体の製造方法。 - 熱伝導性を有する金属部材と、熱伝導性を有する樹脂製放熱部材とを備える放熱構造体を射出成形により成形する放熱構造体の製造方法であって、
前記金属部材を金型内に配置させる配置工程と、
前記金属部材における熱源からの熱を受熱可能な受熱部となる領域を被覆した状態において、前記金型内に樹脂材料を充填させ、前記金属部材に前記樹脂製放熱部材を一体成形させる成形工程とを備え、
前記樹脂材料は、熱伝導率に異方性を付与する長尺形状の熱伝導率調整材を含有しており、
前記成形工程は、前記金型内に前記樹脂材料を充填させる際に、前記金型内のキャビティ容積を所定の方向に変動させ、これにより前記熱伝導率調整材の向きを前記キャビティ容積の変動方向に沿って整列させる変動工程を更に備える
ことを特徴とする放熱構造体の製造方法。 - 前記変動工程における前記キャビティ容積の変動は、前記金型の型開閉動作、又は、前記金型内に配置される可動部の動作によって引き起こされる
ことを特徴とする請求項5乃至7いずれか1項に記載の放熱構造体の製造方法。
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