Circuit assembly and electrical junction box
First Claim
Patent Images
1. A circuit assembly comprising:
- a circuit board on which an electronic component is mounted;
a heat dissipation plate; and
a heat spreading plate that is separate from the heat dissipation plate,wherein an insulating adhesive layer is interposed between the circuit board and the heat spreading plate,the heat spreading plate and the heat dissipation plate are fixed to each other by fixing means, andthe heat dissipation plate is provided with a positioning portion for positioning the heat spreading plate, the positioning portion being defined by an inner wall recessed from a top surface of the heat dissipation plate, wherein the inner wall bounds an outer peripheral edge of the heat spreading plate, the positioning portion seated within the inner wall of the positioning portion.
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Abstract
A circuit assembly includes a circuit board on which a coil is mounted, a heat sink, and a heat spreading plate that is separate from this heat sink. A first insulating adhesive layer is interposed between the circuit board and the heat spreading plate, and the heat spreading plate and the heat sink are fixed by a first fixing hole for a heat sink and a bolt. Accordingly, warping of the circuit board is suppressed.
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Citations
10 Claims
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1. A circuit assembly comprising:
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a circuit board on which an electronic component is mounted; a heat dissipation plate; and a heat spreading plate that is separate from the heat dissipation plate, wherein an insulating adhesive layer is interposed between the circuit board and the heat spreading plate, the heat spreading plate and the heat dissipation plate are fixed to each other by fixing means, and the heat dissipation plate is provided with a positioning portion for positioning the heat spreading plate, the positioning portion being defined by an inner wall recessed from a top surface of the heat dissipation plate, wherein the inner wall bounds an outer peripheral edge of the heat spreading plate, the positioning portion seated within the inner wall of the positioning portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A circuit assembly comprising:
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a circuit board on which an electronic component is mounted; a heat dissipation plate having a recessed portion disposed on a top surface; and a heat spreading plate that is separate from the heat dissipation plate, wherein an insulating adhesive layer is interposed between the circuit board and the heat spreading plate, the heat spreading plate and the heat dissipation plate are fixed to each other by fixing means, the heat spreading plate seated within the recessed portion of the heat dissipation plate, the electronic component has a lead terminal, the lead terminal is mounted passing through the circuit board, and a lead terminal escape hole is provided in a region of the heat spreading plate that corresponds to at least the lead terminal, wherein a portion of the lead terminal is disposed within both the lead terminal escape hole and the recessed portion. - View Dependent Claims (10)
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Specification