JPH0248761Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an attic ventilation unit in a house.

[Conventional technology]

This type of ventilation unit includes one in which multiple immovable louvers are installed vertically and vertically at equal intervals on the ventilation frame, tilted in the width direction, and one in which the ventilation frame has punched metal or perforated louvers. Commonly used materials include perforated sheet materials such as boards and wire mesh.

These conventional louvers are designed to provide natural ventilation at all times by using the gaps between adjacent stationary louvers that are always open and the holes in the perforated sheet material as air passages.

[Problem that the invention attempts to solve]

As mentioned above, all of the conventional types have air passages that are always open, so especially when the temperature of the outside air drops significantly, condensation may form in the attic or the heating efficiency of the rooms below the attic may decrease. This is causing problems such as a decrease in energy consumption.

[Means for solving problems]

According to this idea, the above problem can be solved by adding
A plurality of immovable louvers are arranged side by side vertically at intervals in a state of tilting forward in the width direction, and one side edge in the width direction of each of the plurality of movable louvers is attached to the back of each immovable louver. The middle part of the louver in the width direction abuts the upper edge of the adjacent immovable louver on the lower side, and is pivoted so as to releasably close the gap between the adjacent immovable louvers, and is further attached to the ventilation opening frame at one end. A rod to which a shape memory alloy coil spring is attached is arranged so as to extend up and down the rear part of the movable louver by fixing the outer end of the coil spring to the lower part of the ventilation hole frame, and An attic ventilation unit in which the other side edge in the width direction of a movable louver and the rod portion below the other side edge are pivotally connected via each of a plurality of arms arranged in parallel at intervals in the vertical direction. Solved by.

[Effect]

In the ventilation port unit according to this invention, the temperature of the ventilation port in the attic is the characteristic deformation temperature of the shape memory alloy forming the coil spring (for example, 30 to 40°C).
When the coil spring exceeds The gap between adjacent immovable louvers is opened for natural ventilation.

On the other hand, under such natural ventilation conditions, when the temperature at the attic ventilation opening falls below the above-mentioned specific deformation temperature, the coil spring contracts, and the associated lowering of the rod and arm causes each movable louver to Since it is driven downward and its widthwise intermediate portion abuts against the upper edge of each immovable louver, the gap between adjacent immovable louvers is closed and natural ventilation is blocked.

〔Example〕

This invention, for example, as shown in the drawings, includes side frames 12 and both inclined upper frames 14 of a pentagonal ventilation opening frame 10.
Both ends of each immovable louver 20 are fixed so as to extend horizontally in a front-down inclined state in the width direction, and each immovable louver 2
0, one side edge in the width direction (front edge) of each movable louver 22 is connected to the upper edge of the adjacent fixed louver 20 on the lower side with the middle part in the width direction of the movable louver. Further, a rod 24 with a shape memory alloy coil spring 26 attached to one end is attached to the rear of the lower frame 16 of the ventilation opening frame 10 in the longitudinal direction. At the same time, the other end (upper end) of the rod 24 is supported movably in the axial direction at the lateral center of the upper part of the ventilation opening frame 10, that is, at the rear of the joint of both inclined upper frames 14. A support 28 is disposed, and the other widthwise edge (rear edge) at the longitudinal center of each movable louver 22 and the rod 24 located below the rear edge are connected to each arm 30. It can be implemented in the form of a pivot connection via.

In this illustrated example, when the temperature of the attic ventilation opening rises above a predetermined value or falls below a predetermined value, the coil spring 26 expands or contracts, thereby causing the rod 24 and the arm to move upward or downward. Through the upward or downward pivoting of the movable louver 22, the air passage defined by the adjacent stationary louver 20 is opened or closed, and natural ventilation or its blocking takes place.

[Effect of idea]

As is clear from the above, according to the ventilation unit according to this invention, by using a coil spring, which is its constituent means, whose temperature characteristic of expansion matches the temperature change in the attic of a house,
In response to temperature changes in the attic, the ventilation path defined by the adjacent stationary louver is opened and closed appropriately to prevent condensation in the attic and a decrease in heating efficiency in rooms below the attic. can do.

[Brief explanation of the drawing]

The drawings show an outline of the configuration of an embodiment of the ventilation port unit according to the invention, with FIG. 1 being a partially cutaway front view, and FIG. 2 being a partially enlarged schematic side view. 10...Ventilation frame, 12...Side frame, 14...Slanted upper frame, 16...Lower frame, 20...Imovable louver,
22...movable louver, 24...rod, 26...
...Coil spring, 30...Arm.

Claims (1)

[Scope of utility model registration request] A plurality of immovable louvers are installed vertically and vertically at intervals on the ventilation opening frame, tilting downward in the width direction, and at the back of each immovable louver, one side edge in the width direction of each of the plurality of movable louvers is installed. The movable louvers are pivoted so that the widthwise middle part of each movable louver abuts the upper edge of the adjacent fixed louver on the lower side, releasably closing the gap between the adjacent fixed louvers, and furthermore, the ventilation opening A rod having a shape memory alloy coil spring attached to one end is arranged in the frame so as to extend vertically over the rear part of the movable louver by fixing the outer end of the coil spring to the lower part of the ventilation opening frame. The other side edge in the width direction of each movable louver facing the rod and the rod portion below the other side edge are pivotally connected via each of a plurality of arms arranged in parallel at intervals in the vertical direction, Attic ventilation unit.