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(11) | EP 2 573 477 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Air conditioner |
| (57) An air conditioner includes an indoor unit (1) and an electrical unit (8) placed
on a side of a front wall (1b) of the indoor unit (1). The electrical unit (8) accommodates
a substrate (8c) therein, on which an alternating-current circuit block (132), a high-voltage
direct-current circuit block (133) and a low-voltage direct-current circuit block
(134) are arrayed in order from a side of an alternating-current power cord connected
to an alternating-current power source (131). The alternating-current circuit block
(132) includes a noise filter (139) to restrain unnecessary radiation noise from leaking
to a primary side. A ground pattern (140) of the low-voltage direct-current circuit
block (134) and a pattern (141) of the alternating-current circuit block (132) positioned
on the primary side of the noise filter (139) are placed adjacent to each other to
form a stray capacitance (143) between those patterns (140, 141). The ground pattern
(140) of the low-voltage direct-current circuit block (134) is connected at an end
portion thereof to the earth.
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