JP2010011665A - Power distribution panel for dwelling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power distribution panel for dwelling, in which a case has superior ventilation and heat discharge performance is high. <P>SOLUTION: The power distribution panel 1 for dwelling has a structure in which gaps 10, 11 are provided so that air can flow between both an opening end 8a and a closing end 8b of a door 8 and a case 4 when the door 8 is closed, the door 8 being provided freely openably/closably on the front surface of the case 4 for housing the breakers 5, 6, and a gap 10 is formed in the opening direction of the door 8 so that the opening end 8a of the door 8 is moved upward from the case 4 between the opening end 8a of the door 8 and the case 4 to enable the air to flow in a vertical direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a residential distribution board in which a door is provided on the front surface of a case for accommodating a breaker.

  The distribution board for housing houses the breaker in a box-shaped case with a base and a cover, and a door body is provided on the front of the cover so that it can be opened and closed so as to cover the operation handle of the breaker exposed from the operation hole of the cover ing. The upper closed end of the door body is hinged to the case by a hinge, and the lower open end is locked to the locking means of the case. Residential distribution boards heat up the breaker when energized and the internal temperature rises, so heat is exhausted from the operation hole and naturally cools down. A vent hole is provided in the concave portion in which the body is accommodated to improve the exhaust heat performance (for example, see Patent Document 1).

JP-A-10-126908

  However, conventional residential distribution boards have no ventilation holes or openings in the door body, and there is only a small gap between the door body and the case when the door body is closed. . For this reason, the heat exhausted from the air holes is likely to be trapped inside the door body, and cold air is difficult to flow in from the outside of the residential distribution board, resulting in low heat exhaust performance.

  According to the first aspect of the present invention, in the residential distribution board in which the door body is provided on the front surface of the box-shaped case that accommodates the breaker so as to be freely opened and closed, the door body is opened when the door body is closed. A gap for ventilation is provided between both ends of the end and the closed end and the case.

  According to the second aspect of the present invention, in the residential distribution board according to the first aspect, when the door is closed, the open end of the door is lifted from the case to provide a gap in the door opening direction. It is characterized by.

  According to the invention described in claim 3, in the residential distribution board according to claim 1 or 2, in the vicinity of the gap between the open end and the closed end of the door body, A vent hole is formed in the case.

  According to the first aspect of the invention, there is an effect that the air permeability of the case is improved and the exhaust heat performance is improved.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the cold air outside the residential distribution board flows straight from the lower side of the case into the front surface of the case. The air permeability is very good and the heat exhaust performance is improved.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, cold air outside the distribution board for houses passes through the air hole from the gap at the open end of the door body. The air flows into the case, and the warm air in the case flows through the ventilation holes and the gap between the closed ends of the door body and is discharged outside the residential distribution board. There is an effect that the performance is improved.

  A residential distribution board has a gap for ventilation between the open end of the door body, both ends of the closed end, and the case when the door body that can be opened and closed is closed on the front surface of the case that houses the breaker. A gap is formed between the open end of the door body and the case so that the open end of the door body is lifted from the case and air flows in the vertical direction.

  Example 1 of a residential distribution board according to the present invention will be described with reference to the accompanying drawings of FIGS.

  The residential distribution board 1 accommodates a main breaker 5 and a branch breaker 6 in a box-shaped case 4 composed of a base 2 and a cover 3.

  The cover 3 is formed with an operation hole 3a for exposing the operation handle 5a of the main breaker 5 and the operation handle 6a of the branch breaker 6 on the front surface, and a hinge 7 is provided on the top of the cover 3 so that the front surface of the cover 3 The door body 8 is hinged so as to be openable and closable, and a locking means 9 is provided at the bottom of the cover 3 to lock the door body 8 when it is closed.

  When the door body 8 is closed, clearances 10 and 11 are provided between the case 4 and both ends of the lower open end 8 a and the upper closed end 8 b of the door body 8 and the case 4. Between the open end 8a of the door body 8 and the case 4, a gap 10 is provided in the opening direction of the door body 8 so that the open end 8a of the door body 8 is lifted from the case 4 and air flows in the vertical direction. Further, a ventilation hole 12 made up of a plurality of small holes is formed in the cover 3 on the back side portion of the door body 8 in the vicinity of the clearances 10 and 11 between the open end 8a and the closed end 8b of the door body 8 toward the clearances 10 and 11. Is formed. The gaps 10 and 11 are preferably formed larger than the vent hole 12.

  By providing the gaps 10 and 11 above and below the door body 8, cold air flows from the lower gap 10 of the case 4, and air enters the case 4 through the vent hole 12 and the operation hole 3 a of the cover 3. Since the warm air warmed by the heat generated by the breakers 5 and 6 flows out from the vent hole 12 and the operation hole 3a of the cover 3 and is discharged from the gap 11 on the upper side of the case 4, the air permeability is good and the heat exhaust performance. Is expensive. Further, a gap 10 is provided in the opening direction of the door body 8 between the open end 8 a of the door body 8 and the case 4, and a ventilation hole 12 is formed on the back side of the gap 10. Since it flows straight into the case 4 from below, the air permeability is very good.

It is a front view showing a distribution board for houses concerning the present invention. It is a front view of the state which removed the door body of the distribution board for houses concerning the present invention. It is a right view which shows the distribution board for houses which concerns on this invention. It is a bottom view which shows the distribution board for houses which concerns on this invention. It is the A section enlarged view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Residential distribution board 2 Base 3 Cover 4 Case 5 Master breaker 6 Branch breaker 8 Door body 10 Crevice 11 Crevice 12 Vent

Claims (3)

  In a residential distribution board provided with a door body that can be opened and closed in front of a box-shaped case that accommodates a breaker, the door body is closed between the open end and both ends of the closed end and the case. A residential distribution board characterized by a gap for ventilation.   2. The residential distribution board according to claim 1, wherein when the door is closed, the open end of the door is floated from the case and a gap is provided in the opening direction of the door.   The housing portion according to claim 1 or 2, wherein a vent is formed in the case in the back side portion of the door body in the vicinity of the gap between the open end and the closed end of the door body. Electric board.

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