Window ventilation device

Abstract

To provide a window ventilation device in which a window frame ventilation passage is constructed by utilizing an upper clearance of an existing double sliding window sash without opening a vent hole in an outer wall of a building and without using a window panel for opening a window.SOLUTION: A window ventilation device includes: a window frame ventilation path 5 formed by removing a seal member provided for sealing between an upper horizontal frame 2a and an upper rail 2d of an outdoor side window of a pair of windows in a window frame of a double sliding window sash; an external case 6 attached in close contact with the outdoor-side side-surface 2j of the upper horizontal frame 2a and is in close contact or slidable contact with an upper screen door rail 2h of a window frame 2 and having an air-tight thermal insulation property; an indoor side vent opening on the upper surface of the external case 6 between the outdoor-side side-surface 2j of the upper horizontal frame 2a and an upper screen door rail; and an outdoor-side vent opening 6b opening to the outdoor-side on any surface of the external case 6 in addition to the indoor-side vent opening.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a window ventilation device for mounting on the upper sill of an exterior window of a sliding window sash. [Background technology]

[0002] The use of natural energy is required for the SDGs, and one of these is a solar heating system that uses solar panels on the wall to heat the air and supply it to the room for heating. In many private homes, the living room has a bay window on the south side and a load-bearing wall next to it, so if a solar heating system is installed on this south-facing load-bearing wall, it has the same effect as enlarging the window and doubling the amount of incoming light, and it is rational to supply warm air to the living room with extremely high efficiency. Even if solar power generation panels are lined up here, the area is too small to be useful, and even if a solar hot water heater is installed, the piping and hot water tank will be a problem. Given these background technologies, it is expected that solar heating systems using balcony walls will become very popular in the future, especially in high-rise buildings such as condominiums. Therefore, ventilation systems that send warm air generated by solar heating systems into the room are an important point for their widespread use, so they will be explained below.

[0003] As a first method, a hole drilling method is mainstream, in which ventilation holes are drilled in the exterior wall and an electric fan is used to forcibly blow air through the ventilation holes. FIG. 18 shows an example of the configuration of the hole drilling method. A through hole serving as the ventilation port 52 is drilled in the exterior wall 51 of the building. A heat collecting panel 53 is attached to the exterior wall 51 of the building. The heat collecting panel 53 contains a heating element 53b in a heat insulating casing 53a, and the heating element 53b is heated by sunlight collected from the glass light collecting surface 53c, thereby warming the air in the heat insulating casing 53a. An air intake port 53d is provided at the bottom of the heat insulating casing 53a. In addition, a vent pipe 53e serving as an air passage is protruding from the surface of the heat insulating casing 53a opposite to the glass light collecting surface 53c, and an electric fan 54 is provided in the vent pipe 53e. The heat collecting panel 53 is assembled by aligning and fitting the vent pipe 53e to the vent 52.

[0004] The second method is the window panel method, in which a panel with ventilation holes is added to the sliding window frame. Figure 19 shows an example of the configuration of the window panel method. A pair of sliding windows 56 (an exterior window 56a and an interior window 56b) are provided in the window frame 55 so that the central overlapping portion can be locked with a crescent lock 56c. Of the pair of sliding windows 56, the exterior window 56a is opened, and a window panel 57 is sandwiched between the exterior window 56a and the vertical frame of the window frame 55 in the space created. The heat collecting panel 53 and the window panel 57 provided on the exterior wall 51 of the building are connected by piping via an external ventilation pipe 58. An electric fan 59 is provided at the connection portion between the external ventilation pipe 58 and the thermal insulating casing 53a. An outside air intake 60 is provided at the bottom of the heat collecting panel 53.

[0005] Here, we will briefly explain how the hot air type solar heating device works. When sunlight hits the heating element 53b (for example, a black metal plate) of the heat collecting panel 53, the heating element 53b absorbs the solar energy and generates heat, heating the air inside the heat collecting panel 53. The heated air is sent into the room by the electric fans 54, 59 provided on the heat collecting panel 53, and by heating the indoor air, a heating effect is achieved.

[0006] As an example of the solar heating device, the following device is known. For example, a solar wall unit drives a fan of a solar panel by a solar cell. A sleeve is inserted into a hole formed in the wall of a building, a fan connected to the solar cell and driven is provided in the sleeve, and a filter is provided, and an intake duct of the solar wall unit is inserted into the sleeve, sealed, and assembled. When sunlight hits the solar panel, the solar panel absorbs solar heat, and at the same time, the solar cell converts the sunlight into electrical energy, which rotates the fan, creating negative pressure in the intake chamber and allowing outside air to flow into the intake chamber through a small hole, where it is heated to 20°C or higher, and the heated outside air is blown into the building as blown air for heating or ventilation (Patent Document 1; JP 2002-5530 A).

[0007] Also, a window panel system has been proposed in which a plate-shaped panel is attached to an existing sliding window sash to avoid having to provide an air vent in the exterior wall for window ventilation fans, window air conditioners, etc. In a prior art example, a solar panel and a ventilation fan are attached to a plate-shaped member as a ventilation window panel, and the plate-shaped member is installed in the gap between the window frame and the sliding door (Patent Document 2; Utility Model Registration No. 3230748). [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2002-5530 A [Patent Document 2] Utility Model Registration No. 3230748 Summary of the Invention [Problem to be solved by the invention]

[0009] (1) Issues with drilling methods in existing housing Opening a large diameter vent hole of φ100~150mm in the exterior wall of a building is not desirable from the viewpoint of preventing water leakage. Furthermore, braces and electric wires are hidden inside the wall, so drilling is difficult unless done by a professional. Drilling is almost impossible in concrete buildings such as apartment buildings, and solar heating equipment cannot be installed in rental housing because drilling is not permitted. In addition, with wall-mounted types, the inclination angle and azimuth angle of the heat collection panel are limited, making it impossible to optimize efficiency, and there is furniture inside the room, so the drilling position is quite limited. There is also anxiety about suddenly drilling holes without being able to confirm the effect in advance. In this way, the drilling method of installing a vent hole in the exterior wall of a building imposes a heavy burden on users, and is a major factor preventing the spread of solar heating equipment.

[0010] (2) Issues with the window panel system The window panel method requires opening the window to install the window panel, which creates security problems as it cannot be locked. Since it cannot be locked, it is almost unpractical in urban areas. In addition, large gaps form on the glass surfaces of both the indoor and outdoor windows, allowing wind, rain, and insects to get in, so gap-filling materials must be installed, but it is difficult to completely prevent this. Also, the window panels block incoming light, reducing the amount of incoming energy in winter, and the amount of light blocked is particularly large in bay windows, reducing the heating effect of sunlight. As such, the window panel method also has various issues that make it difficult to adopt. [Means for solving the problem]

[0011] The present invention has been made to solve the problems of the above-mentioned drilling method and window panel method, and provides a window ventilation device that uses the upper gap of an existing sliding window sash to construct a window frame ventilation path without opening a vent in the exterior wall of a building and without using a window panel to keep the window open. In particular, the present invention aims to provide a window ventilation device that is easy to install in existing houses and to popularize solar heating devices that use solar energy. In addition, the present invention paves the way for the use of natural energy by installing a solar heating device on the balcony wall of a high-rise building such as an apartment building, where the use of natural energy has not progressed because the roof does not allow the installation of a solar power generation device or a solar hot water heater.

[0012] The device comprises a window frame air passage formed by removing a sealing member provided to seal between the upper horizontal frame and upper rail of the outdoor window of a pair of windows provided within the window frame of a sliding window sash; an external casing that is attached in close contact with the outdoor side surface of the upper horizontal frame and in close contact or slidable contact with the upper screen rail; an indoor side air vent that opens on the upper surface of the external casing between the outdoor side surface of the upper horizontal frame and the upper screen rail; and an outdoor side air vent that opens to the outside on either surface of the external casing separately from the indoor side air vent, and is characterized in that outside air is drawn into the room or indoor air is exhausted to the outside through the window frame air passage via the outdoor side air vent, the external casing, and the indoor side air vent. This allows a window frame ventilation path to be constructed by utilizing the upper gap of the existing sliding window sash, without opening a vent in the exterior wall of the building or using a window panel to keep the window open. Therefore, ventilation can be performed while preventing the intrusion of suspicious people, wind, rain, and pests by fully closing and locking the window sash. There is no risk of fire, and it can be operated unmanned, so it can be used safely even when you are away or asleep.

[0013] A windbreak member covering the gap between the upper horizontal frame and the upper screen rail may be fixed to the exterior side of the upper horizontal frame in the gap on both sides of the window frame air passage that is not covered by the external casing. This prevents wind from entering through the gap in the window frame ventilation passage formed between the upper horizontal frame and the upper screen rail, and prevents air from escaping from inside the room to outside.

[0014] An opening / closing valve may be provided which is connected to the outdoor side vent port of the external housing and is capable of opening and closing an external pipe for communicating ventilation between the indoors and the outdoors. This allows the resident to ventilate the room by opening the opening / closing valve when desired, and to maintain airtightness inside the room by closing the opening / closing valve when not desired.

[0015] An air vent pipe is connected to an outdoor air vent provided on one longitudinal end face of the cylindrical external casing, and the air vent pipe may be fixed to the window frame or a building wall and slidably fitted into the outdoor air vent within the length range of the external casing. As a result, when opening or closing the exterior window to which the external casing is attached, the ventilation pipe and the exterior vent port slide, allowing the ventilation pipe to be moved relatively within the length range of the external casing to open and close the exterior window.

[0016] An electric fan capable of rotating in both directions may be provided between the indoor vent and the outdoor vent in the external housing, and forced air supply or forced exhaust may be performed by switching the rotation direction of the electric fan. This allows forced air supply or forced exhaust to be performed according to the needs of the occupants. In addition, CO2 emissions during forced air supply or forced exhaust operation are only from the electric fan, reducing the environmental impact.

[0017] The present invention is an air-supply type solar heating device equipped with an outside air intake port for taking in outside air into a heat collection panel, a hot air outlet port for sending outside air heated by the heat collection panel into the room, and an electric fan that can rotate forward and backward to forcibly blow air inside the heat collection panel, and the heat collection panel is provided near the outdoor window of a pair of windows or on an exterior wall surface near the outdoor window, and the hot air outlet port of the heat collection panel is connected by piping to the outdoor air vent of the external casing. This allows the electric fan to rotate in a specified direction, supplying outside air through the outside air intake and sending warm air heated by the heat collecting panel to the external casing, and then sending the warm air from the external casing through the warm air outlet via the window frame ventilation passage in the upper horizontal frame portion into the room for use as heating, or by rotating the electric fan in the reverse direction, sending indoor air through the external casing to the heat collecting panel and then exhausting it to the outside through the outside air intake, thereby ventilating the room.

[0018] A first external housing and a second external housing may be provided side by side on the upper horizontal frame of the outdoor window, the hot air outlet of the heat collecting panel and the outdoor air vent of the first external housing are connected by piping, the outside air intake of the heat collecting panel and the outdoor air vent of the second external housing are connected by piping, and the hot air heated by the heat collecting panel is sent into the room via the first external housing, indoor air is taken into the heat collecting panel via the outside air intake via the second external housing, and the hot air reheated by the heat collecting panel is circulated between the room and the heat collecting panel via the first external housing and the second external housing. This allows efficient heating on sunny winter days because the indoor air, which is hotter than the outside air, is heated by the heat collecting panel.

[0019] A pair of variable-length poles may be provided vertically on both sides of the collector panel of the solar heating device or on the back of the central part of the collector panel so as not to interfere with the outside air intake and warm air outlet, and the back of the collector panel may be raised in contact with the exterior wall of the building to support positive wind pressure loads, and the variable-length poles may be extended to the eaves and fixed against them, and the variable-length poles and the eaves may be firmly fixed with lock screws to support negative wind pressure loads. This makes it possible to easily install a solar heating device on the balcony wall of an existing house or a high-rise building such as an apartment building using the variable-length pole. Effect of the Invention

[0020] According to the above-mentioned window ventilation device, it is possible to provide a window ventilation device that is easy to install in an existing house without providing a ventilation hole in the exterior wall of the existing house and without the need for a window panel. In particular, the installation space can be minimized by simply attaching the external housing to the outdoor side of the upper horizontal frame, and high efficiency can be expected in winter by vertically installing the heat collecting panel on the exterior wall. Furthermore, in a high-rise house that does not have a roof and cannot use renewable energy, it is possible to open the way to use natural energy by installing a heat collecting panel on the balcony wall and installing a solar heating device. Furthermore, the fuel consumption and construction costs of the solar heating device are low, the initial investment cost can be recovered in a short period of time, and it has a long lifespan, which can contribute to the SDGs. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a front view of a typical example of a sliding window sash. [Diagram 2] FIG. 1 is a side cross-sectional view of a typical example of a sliding window sash. [Diagram 3] This is a typical cross-sectional view of the upper part of the window frame and the upper horizontal frame of the exterior window. [Figure 4] 1 is a cross-sectional view of a window ventilation device according to a first embodiment. [Diagram 5] FIG. 5 is a perspective view illustrating an air passage of the window ventilation device of FIG. 4. [Figure 6] 13 is an explanatory diagram of a case where a windbreak member is provided on the external housing. FIG. [Figure 7] FIG. 11 is an explanatory diagram of the window ventilation device according to the second embodiment, showing an open state of an opening / closing valve provided in an external ventilation pipe. [Figure 8] 11 is an explanatory diagram of a closed state of an opening / closing valve provided in an external ventilation pipe. FIG. [Figure 9] FIG. 11 is an explanatory diagram of the window ventilation device according to the third embodiment, showing a connection state between the external housing and the external ventilation pipe when the outdoor window is opened or closed. [Figure 10] FIG. 11 is an explanatory diagram of a window ventilation device according to a fourth embodiment, in which an electric fan is provided inside an external housing. [Figure 11] FIG. 11 is a perspective view of a window ventilator according to a fifth embodiment, in which an air supply type solar heating device is connected to the window ventilator. [Figure 12] FIG. 12 is a perspective view showing an example of the heat collection panel of FIG. [Figure 13] FIG. 12 is a perspective view showing another example of the heat collecting panel of FIG. [Figure 14] FIG. 12 is an explanatory diagram of an operation mode using the window ventilation device of FIG. [Figure 15] FIG. 13 is a perspective view of a window ventilator according to a sixth embodiment, in which an air supply / exhaust type solar heating device is connected to the window ventilator. [Figure 16] FIG. 13 is an explanatory diagram of a window ventilation device according to a seventh embodiment, in which a solar heating device is fixed to a wall surface by a variable-length pole. [Figure 17] FIG. 1 is an explanatory diagram showing an example of installation of a window ventilation device and a solar heating device in a high-rise building. [Figure 18] This is an example of the configuration of a hole-drilling type solar heating device. [Figure 19] This is an example of the configuration of a window panel type solar heating device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] [Example 1] Window sash construction The window sash system will be described with reference to Figures 1 to 6. The present invention uses an existing sliding window sash to provide an air passage between the inside and outside of the room. Since it is not possible to prevent wind, rain, and outsiders from entering when the sliding window is even partially open, the premise is that ventilation will be performed when the sliding window is completely closed and can be locked.

[0023] First, the basic structure of a sliding window sash will be described. As shown in Figure 1, a sliding window sash 1 is composed of a pair of windows, an exterior window 1a and an interior window 1b, and a window frame 2 that houses them. The exterior window 1a and the interior window 1b are made of glass sheets G attached to a window frame that consists of an upper horizontal frame 2a and a lower horizontal frame 2b connected by a vertical frame 2c. The exterior window 1a and the interior window 1b are locked by a crescent lock 3 installed at the overlapping part in the center.

[0024] As shown in Fig. 2, rollers 1c, 1d are provided at the lower ends of the exterior window 1a and the interior window 1b so that they can freely rotate. The rollers 1c, 1d run along lower rails 2f, 2g laid at the bottom of the window frame 2. The exterior window 1a and the interior window 1b are guided by upper rails 2d, 2e laid at the top of the window frame 2, and are opened and closed as the rollers 1c, 1d run. An upper screen rail 2h and a lower screen rail 2i are provided above and below the exterior window 1a of the window frame 2, allowing a screen door (not shown) to be attached.

[0025] In addition, slits are provided in the upper part of the vertical frame 2c, which fit into the upper rails 2d, 2e at the top of the window frame 2, respectively, and regulate the window position with the wall surfaces of the upper horizontal frame 2a and the lower horizontal frame 2b. The gap between the upper horizontal frame 2a and the upper rails 2d, 2e is filled with rubber seal members 4a, 4b fixed to the upper horizontal frame 2a, and the seal members 4a, 4b slide while in contact with the upper rails 2d, 2e, filling the gap and realizing waterproofing, windproofing, and insectproofing.

[0026] Next, the window frame ventilation passage will be explained. Figure 3 is a typical cross-sectional view of the upper part of the window frame 2 and the upper horizontal frame of the exterior window 1a. As shown in Figure 3, sliding windows 1 are generally lifted upward by about 10 mm in order to be attached and detached one by one, and a gap of about 15 mm is provided above the upper horizontal frame 2a. Therefore, when the above-mentioned seal member 4a is removed from the exterior window 1a, which is located on the exterior side of the two windows, ventilation between the outside and the inside of the room is possible through the 15 mm gap above the upper horizontal frame 2a. Furthermore, an upper screen rail 2h is provided on the outside of the exterior side of the upper horizontal frame 2a with a gap of about 5 mm, and air can circulate between the outside and the inside of the room through this gap. The arrows in the figure indicate the air flow and indicate the window frame ventilation passage 5.

[0027] The width of the vent passage is approximately 600 mm, slightly narrower than the window width. Therefore, the cross-sectional area of ​​the vent passage is 0.5 cm x 60 cm = 30 cm. 2 This corresponds to a pipe with an inner diameter of 60 mm. If the width of the ventilation passage is half the width of the window, it is approximately 300 mm, and the cross-sectional area is 15 cm 2 This corresponds to a pipe with an inner diameter of 44 mm. 2 It is possible to ventilate or heat the room. It is not necessary to remove the entire width of the window of the sealing member 4a. Since both ends of the sealing member 4a may be fixed by crimping, it is possible to leave both ends as they are and simply cut off the center portion.

[0028] Next, an example of a window ventilation device will be described. As shown in FIG. 4, the indoor opening 5a of the window frame ventilation passage 5 only needs to be open to the room, so no special mechanism is required. In contrast, the outdoor opening 5b of the window frame ventilation passage 5 is a gap of about 5 mm between the upper horizontal frame 2a and the upper screen rail 2h, and a special connection mechanism is required because this narrow gap must be connected to the hot air piping from the solar heating device. In the following explanation, this connection mechanism will be called the "external housing 6." The external housing 6 may be either rectangular or cylindrical.

[0029] The window frame air passage 5 is formed by partially removing the seal member 4a provided to seal the gap between the upper horizontal frame 2a and the upper rail 2d. The external housing 6 is fixed with a fixing screw 8a by engaging a hook-shaped fixing member 7 with the upper end of the upper horizontal frame 2a and bringing the mounting surface 6d into close contact with the exterior side surface 2j. The exterior opening 5b of the window frame air passage 5 and the external housing 6 are connected to each other while maintaining airtightness and heat insulation by an L-shaped member 9 that is in close contact with the outer side surface 2j of the upper screen rail 2h of the window frame 2 and the top surface of the external housing 6. The external housing 6 is attached in close contact with the exterior side surface 2j of the upper horizontal frame 2a, and is in slidable contact or in close contact with the upper screen rail 2h.

[0030] As shown in FIG. 5, an indoor vent 6a is provided on the top surface of the external housing 6 between the outdoor side surface 2j of the upper horizontal frame 2a and the upper screen rail 2h of the window frame 2, and an outdoor vent 6b is provided on any surface of the external housing 6, for example, one end surface in the longitudinal direction, which opens to the outside. An external vent pipe 10 is connected to the outdoor vent 6b, which may be connected to a solar heating device described later. The arrow in FIG. 5 indicates the direction in which the warm air flows. In addition, two hook-shaped mounting parts 6c are protruding from the upper part of the mounting surface 6d of the external housing 6. The mounting parts 6c are engaged with the upper end of the upper horizontal frame 2a when the external housing 6 is temporarily assembled to the upper horizontal frame 2a to prevent it from falling.

[0031] In Figure 6, in addition to assembling the external housing 2 to the upper horizontal frame 2a by engaging it with the upper horizontal frame 2a at both longitudinal ends with hook-shaped fixing members 7, windbreak members 11 may be inserted inside the upper screen rail 2h of the window frame 2 in the gaps on both sides of the upper horizontal frame 2a that are not covered by the external housing 6, and fixed to the outdoor side surface 2j of the upper horizontal frame 2a. This makes it possible to prevent wind from entering through the gap in the window frame ventilation passage 5 formed between the upper horizontal frame 2a and the upper screen rail 2h of the window frame 2, and to prevent air from leaking from inside the room to the outside.

[0032] An example of a procedure for attaching the external housing 6 is as follows. STEP 1: Remove the exterior window 1a from the window frame 2. STEP 2: Remove the sealing member 4a from the upper horizontal frame 2a of the exterior window 1a to create a window frame ventilation passage 5. STEP 3: The mounting surface 6d of the external housing 6 is brought into close contact with the exterior side surface 2j of the upper horizontal frame 2a, and the fixing member 7 is firmly screwed in place using the fixing screws 8a. STEP 4: Fit the exterior window 1a into the window frame 2 and return it to its original position. STEP 5: Adjust the position of the L-shaped member 9 so that it comes into contact with the upper screen rail 2h, and then secure it to the top surface of the external housing 6 with the fixing screws 8b. STEP 6: If necessary, attach the windbreak member 11 to the portion of the upper horizontal frame 2a that is not covered by the external housing 6. With the above steps, the external housing 6 is attached to the sliding window sash 1. All that remains to be done is to install the heat collecting panel and connect the piping to an external ventilation pipe, and then the solar heating device can be used.

[0033] 6, the external housing 6 has an indoor vent 6a and an outdoor vent 6b, through which air flows. The indoor vent 6a is a long and narrow window that opens in the gap between the upper horizontal frame 2a and the upper screen rail 2h, and allows air to flow from the external housing 6 side to the indoor side or from the indoor side to the external housing 6 side. The outdoor vent 6b is a circular vent provided on one end face in the longitudinal direction of the external housing 6, and when the external vent pipe 10 is connected, air flows from the external housing 6 side to the external vent pipe 10 side or from the external vent pipe 10 side to the external housing 6 side. The mounting portions 6c provided in two places above the mounting surface 6d of the external housing 6 are used when assembling the external housing 6 to the upper horizontal frame 2a, and are engaged with the upper end of the outdoor side surface 2j of the upper horizontal frame 2a to prevent the external housing 6 from falling. Moreover, the external housing 6 is fixed with fixing screws 8a by engaging hook-shaped fixing members 7 with the upper end of the upper horizontal frame 2a with the mounting surfaces 6d in close contact with the outdoor side surface 2j of the upper horizontal frame 2a on both longitudinal sides. The L-shaped member 9 is used in a state in which the exterior window 1a is removed from the window frame 2, the external housing 6 is attached, and then the exterior window 1a is reassembled to the window frame 2, and is fixed to the top surface of the external housing 6 with fixing screws 8b at a position where it contacts the upper screen rail 2h, making the upper screen rail 2h and the L-shaped member 9 slidable. This slidability makes it possible to open and close the exterior window 1a with the external housing 6 attached. When the exterior window 1a with the external housing 6 attached is fixed and not opened or closed, the upper screen rail 2h and the L-shaped member 9 may be fixed in close contact with each other.

[0034] In addition, it is desirable that the external housing 6 is insulated to reduce heat loss in the ventilation path. The insulated external housing 6 also reduces heat radiation from the upper horizontal frame 2a and the upper screen rail 2h. The windbreak member 11 is fixed to the outdoor side surface 2j of the upper horizontal frame 2a in the gap between the upper horizontal frame 2a and the upper screen rail 2h of the window frame 2, which is not covered by the external housing 6. The windbreak member 11 is inserted inside the upper screen rail 2h of the window frame 2, and closes the gap with the upper horizontal frame 2a, preventing wind from entering from the outside and preventing air from flowing out from inside the room to the outside. It also prevents rain, insects, sand, dust, etc. from entering the inside of the room. In addition, it is desirable that the windbreak member 11 has a deformable shape and is made of a flexible material.

[0035] Example 2 Another example of the window ventilation device of the first embodiment will be described. The same members as those of the first embodiment will be assigned the same numbers and the description will be incorporated herein, and the following description will focus on the different configurations. As shown in Figs. 7 and 8, an opening and closing valve 12 capable of opening and closing the external ventilation pipe 10 may be provided near the outdoor ventilation port 6b of the external housing 6. The opening and closing valve 12 opens and closes the ventilation path in the external ventilation pipe 10 by manually rotating a valve opening and closing handle 12c that connects a disk-shaped shutter 12a to a rotating shaft 12b.

[0036] FIG. 7 shows the opening and closing valve 12 in the external vent pipe 10 in an open state, and FIG. 8 shows the opening and closing valve 12 in the external vent pipe 10 in a closed state. When the valve opening and closing handle 12c provided on the external vent pipe 10 is turned to the open position, the disk-shaped shutter 12a is in a position parallel to the longitudinal direction of the external vent pipe 10, allowing hot air to flow (see FIG. 7). When the valve opening and closing handle 12c is turned to the closed position, the disk-shaped shutter 12a is in a position perpendicular to the longitudinal direction of the external vent pipe 10, preventing hot air from flowing (see FIG. 8). It is preferable that the bearings supporting the rotating shaft 12b are waterproof so that rain does not leak into the external vent pipe 10. In addition, an exhaust port may be provided near the heat collecting panel of the external vent pipe 10, and when the valve opening and closing handle 12c is in the closed position, the exhaust port is opened to exhaust hot air to the outside of the room. In addition, the opening and closing operation of the opening and closing valve 12 may be automatically controlled using an electromagnetic valve (not shown). As a result, when ventilation is desired at the resident's discretion, the opening / closing valve 12 is opened to ventilate the room and the outside, and when ventilation is not desired, the opening / closing valve 12 is closed to maintain airtightness.

[0037] Example 3 Another example of the window ventilation device of the first embodiment will be described. The same members as those of the first embodiment will be given the same numbers and the description will be incorporated, and the following will focus on different configurations. An embodiment in which an outdoor window 1a equipped with a window ventilation device can be opened and closed will be described with reference to FIG. 9. An outdoor vent 6b provided on one end face in the longitudinal direction of the external housing 6 and an outdoor vent pipe 10 are airtightly connected. The outdoor vent pipe 10 is fixed to the window frame 2 or the outer wall of the building with a saddle 13 for fixing pipes or the like. The outdoor vent pipe 10 is fitted within the length range of the outdoor vent 6b to the external housing 6, and the external housing 6 moves in response to the opening and closing operation of the outdoor window 1a, and the outdoor vent pipe 10 moves relative to the outdoor vent 6b while sliding against the outdoor vent 6b. At this time, for example, if a seal material is provided at the outdoor vent 6b of the external housing 6, air leakage from the gap with the outdoor vent pipe 10 can be prevented. In this way, the external vent pipe 10 and the outdoor vent port 6b slide against each other, so that the outdoor window 1a to which the external housing 6 is attached can be opened and closed within the range of almost the length of the external housing 6 even during intake and exhaust. The indoor window 1b to which the external housing 6 is not attached can be opened and closed freely at a full stroke, and a screen door can also be used. The arrow in Figure 9 indicates the direction in which the external housing 6 moves as the outdoor window 1a is opened and closed. When the exterior window 1a is closed, the exterior vent pipe 10 and the exterior housing 6 are in the position shown by the solid line in Figure 9. When the exterior window 1a is opened, the exterior housing 6 moves in the direction of the arrow, but the exterior vent pipe 10 does not move, and the exposed length increases in the longitudinal direction. If a stopper (not shown) is provided on the upper rail 2d of the window frame 2, for example, the exterior window 1a will stop at a specified position, preventing the piping from coming loose.

[0038] Example 4 Another example of the window ventilation device of the first embodiment will be described. The same members as those of the first embodiment will be given the same numbers and the description will be incorporated, and the following description will focus on the different configurations. A case where an electric fan 14 is installed inside an external housing 6 will be described with reference to FIG. 10. The electric fan 14 is provided between the indoor vent 6a and the outdoor vent 6b of the external housing 6, and ventilation can be performed by rotating the electric fan 14 to supply air from the outside to the inside of the room, or by rotating in the opposite direction to exhaust indoor air from the inside of the room to the outside. In order to increase the intake and exhaust efficiency of the electric fan 14, a partition wall may be added to the outer periphery of the electric fan to prevent the formation of a bypass before and after the electric fan.

[0039] The power supply 15 and control panel 16 of the electric fan 14 are provided on the indoor wall, but if the electric fan 14 is installed inside the external housing 6, the wiring 17 is easy because of the short distance, and it is not exposed to wind and rain, so it is less likely to break down. For example, when connecting a solar heating device, if the electric fan 14 is placed inside the heat collecting panel (not shown), the motor, temperature sensor, connector and wiring may be subject to condensation, flooding and freezing due to wind and rain, and exposure to ultraviolet rays, which may reduce the durability of the motor. Therefore, if the electric fan 14 is moved to the connection port of the external ventilation pipe 10 inside the external housing 6, the operating environment will be improved and the occurrence of breakdowns and electric leakage accidents can be significantly reduced. In addition, a DC brushless motor is preferable for the motor for driving the electric fan 14 because of its controllability, quietness and durability. Although it is small, consuming only a few watts of power, it is also required to have energy-saving performance. If a temperature sensor (not shown) connected to the control panel 16 inside the room is appropriately placed, optimal automatic control will be possible. In this way, by connecting a solar heating device to the external ventilation pipe 10 and rotating the electric fan 14 in the forward direction, the air inside the heat collecting panel (see Fig. 11) can be blown out into the room for heating, and by rotating the electric fan 14 in the reverse direction, it becomes a ventilator that sends indoor air outside via the heat collecting panel (see Fig. 11), and can ventilate by expelling hot air from the room or odors from sick people or pets, etc. Especially in summer, by rotating it in the reverse direction during the day, it is possible to lower the room temperature by expelling hot air trapped inside the room while keeping the windows locked and closed to prevent suspicious people from entering.

[0040] Example 5 Another example of the window ventilation device of the first embodiment will be described with reference to Figures 11 to 14. The same members as those of the first embodiment will be given the same numbers and the description will be incorporated therein, and the following description will focus on the different configurations. This embodiment will be described using a usage mode in which a supply-type solar heating device is connected to the window ventilation device.

[0041] 11, the external housing 6 attached to the exterior window 1a and the heat collection panel 19 provided on the building exterior wall 18 are connected by an external ventilation pipe 10. The heat collection panel 19 can be provided in the vicinity of the exterior window 1a or on the building exterior wall 18 nearby, and this example illustrates the case where the heat collection panel is provided on the building exterior wall 18. FIG. 12 shows an example of the configuration of the heat collecting panel 19. A flat heating element 19b is installed inside a heat insulating casing 19a. The heat collecting surface of the flat heating element 19b that collects sunlight is black and made of aluminum or the like, and collects solar heat on this surface to heat the air inside the heat insulating casing 19a. The light collecting surface 19c on which the flat heating elements 19b are arranged is sealed with a glass plate. An outside air intake 19d is provided at the bottom of the heat insulating casing 19a. A hot air outlet 19e is provided at the top of the heat insulating casing 19a. An electric fan 14 is provided inside the heat insulating casing 19a and near the hot air outlet 19e. The hot air outlet 19e and the outdoor side vent 6b of the external housing 6 are connected by an external vent pipe 10 (see FIG. 11).

[0042] When sunlight hits the heat collecting panel 19, the flat heating element 19b inside generates heat and warms the air taken in from the outside air intake 19d. An electric fan 14 is provided near the warm air outlet 19e of the heat collecting panel 19. When the electric fan 14 rotates, the warm air inside the heat collecting panel 19 passes through the external ventilation pipe 10 and is sent out to the external housing 6 attached to the outdoor window 1a. The air sent into the external housing 6 is sent out into the room via the window frame ventilation path 5 (see Figure 4) in the upper horizontal frame 2a (window sash type). At the same time as the warm air is sent out from the heat collecting panel 19, outside air is drawn into the heat collecting panel 19 from the outside air intake 19d and heated, and the above operations are performed continuously to heat the room. The outside air is pressurized by the electric fan 14 and forcibly supplied to the room, so that supply-type ventilation is also performed.

[0043] In addition, when the position of the outdoor air vent 6b of the external housing 6 is higher than the hot air outlet 19e of the heat collecting panel 19 and the hot air temperature is higher than the room temperature, the hot air can be caused to flow from the heat collecting panel 19 through the external housing 6 by natural convection into the room. Therefore, when the electric fan 14 is stopped or during a power outage, the system operates as a passive heating device. When there is sunlight and the temperature inside the heat collecting panel 19 is higher than the room temperature, hot air is supplied into the room to perform heating operation, and when the temperature is low, the air flow stops. This prevents the warm air in the room from being discharged to the heat collecting panel 19 side at night and from getting cold. When outside air flows in through the heat collecting panel 19 due to a storm or the like, an opening and closing valve 12 (see FIG. 8) is provided in the external vent pipe 10, and the opening and closing valve 12 can be closed to prevent the intrusion of outside air.

[0044] FIG. 13 shows another example of the configuration of the heat collecting panel 19. A plurality of double-layered glass tubes 20 with both ends open are arranged side by side. The space between the outer glass tube and the inner glass tube of each double-layered glass tube 20 is in a substantially vacuum state. A heat collecting film for absorbing solar light and collecting heat is provided on the radially inner side of this vacuum layer. The lower end of each double-layered glass tube 20 is connected to an intake side duct 21, and the upper end of each double-layered glass tube 20 is connected to an exhaust side duct 22. An outside air intake 21a is connected to the intake side duct 21, and a hot air outlet 22a is connected to the exhaust side duct 22. An electric fan 14 is provided in the exhaust side duct 22 near the hot air outlet 22a. The hot air outlet 22a and the outdoor vent 6b of the external housing 6 are connected by an external vent pipe 10. The above-mentioned vacuum tube type is less likely to release solar heat to the outside than the flat plate type, so that it can efficiently heat even in winter or other times when the outside temperature is low.

[0045] The supply air type solar heating device only requires one external vent pipe 10 to be connected to the external housing 6, so only one external housing 6 is required to be attached to the outdoor window 1a. Regarding installation, the heat collecting panel 19 only needs to be installed on the building exterior wall 18 near the outdoor window 1a. The outdoor window 1a is removed, the external housing 6 is attached, the outdoor window 1a is returned to its original state, and the installation is completed by connecting the piping. The rest is wiring for the electric fan 14. In this way, no drilling work is required for installation, and it is possible to temporarily install the device and check the direction angle, sunlight conditions, etc., so that the installation work can be performed quickly. In addition, it is necessary to install filters in the outdoor air intakes 19d and 21a of the heat collecting panel 19 to prevent insects and pollen from entering, and filter replacement work is required. Alternatively, cold outdoor air can be taken into the room on summer nights to cool the room. Taking in outdoor air also provides ventilation and prevents the room from becoming too cold, resulting in healthy air conditioning. Furthermore, if the electric fan 14 is rotated in the reverse direction, it becomes an exhaust type ventilator that exhausts indoor air via the heat collecting panel 19. This allows hot air or odors trapped in the room to be exhausted.

[0046] Figure 14 is an explanatory diagram of the operating modes of a window ventilation system connected to an air supply type solar heating system. The first operating mode is heating operation, supplying warm air into the room on clear winter days. Operation stops after sunset. The second operating mode is cooling operation, supplying cool air into the room at night in summer to cool the room. The third operating mode is exhaust operation, exhausting indoor air to the outside by rotating the electric fan in the reverse direction during the daytime in summer. This expels hot air from inside the room. These heating, cooling, and exhaust operations can be performed with the windows closed and locked, so there is no risk of suspicious people or insects getting in. In addition, since there is no risk of fire, it can be operated unmanned when you are away.

[0047] Example 6 Another embodiment in which an intake / exhaust type solar heating device is connected to a window ventilation device will be described with reference to Fig. 15. It has a similar configuration to the intake type solar heating device, but differs in that indoor air, rather than outside air, is drawn into the heat collection panel 19. For this reason, two external casings 6 are used and placed side by side on the outdoor window 1a, with the first external casing 6A and the first external vent pipe 10A connected thereto being used as a passage for warm air, and the second external casing 6B and the second external vent pipe 10B connected thereto being used as a passage for indoor air. 15, a first external housing 6A and a second external housing 6B are provided side by side on an upper horizontal frame 2a of an outdoor-side window 1a. A first external vent pipe 10A connects a hot air outlet 19e of the heat collecting panel 19 to the outdoor-side vent port 6b of the first external housing 6A, and a second external vent pipe 10B connects an outside air intake 19d of the heat collecting panel 19 to the outdoor-side vent port 6b of the second external housing 6B.

[0048] The air heated by the heat collecting panel 19 may be sent into the room via the first external casing 6A by the electric fan 14, indoor air may be taken into the heat collecting panel 19 via the second external casing 6B, and the air heated by the heat collecting panel 19 may be sent out into the room again via the first external casing 6A, thereby circulating the indoor air between the heat collecting panel 19. This makes the indoor air, which is hotter than the outside air, warmer, resulting in a powerful heating effect. It is highly efficient because it does not require a filter. However, it does not ventilate, so a separate ventilation means must be installed.

[0049] Example 7 An embodiment in which a solar heating device connected to a window ventilation system is fixed to a wall surface of a building by a variable-length pole will be described with reference to FIG. Fig. 16 shows an embodiment in which the heat collection panel 19 is fixed to the wall surface with two variable-length poles 23a, 23b. A pair of variable-length poles 23a, 23b are provided vertically on both sides of the heat collection panel 19 of the solar heating device (or on the back surface of the center of the heat collection panel 19) so as not to interfere with the outside air intake 19d and the warm air outlet 19e. The variable-length poles 23a, 23b are erected vertically between the floor surface 24 and the eaves 25, and are butted and fixed in place by tightening the lock screws 26a, 26b. The back of the heat collecting panel 19 is brought into contact with the building exterior wall 18 such as a balcony and made to stand upright, so that the positive wind pressure load is released to the building exterior wall 18, and furthermore, the variable length poles 23a, 23b are firmly fixed between the floor surface 24 and the eaves 25 with lock screws 26a, 26b, so as to support the negative wind pressure load. This allows the hot air solar heating system to be installed in a minimum space, does not require installation work by a contractor, and ensures safety even against strong winds. Since not a single screw is driven into the building exterior wall 18, it can be installed or removed extremely easily even on concrete or tile walls.

[0050] FIG. 17 shows the installation layout of a solar heating device connected to a window ventilation device in a high-rise house. A pair of sliding window sashes 1 are installed in a window frame 2 so that they can be opened and closed on the building exterior wall 18. Area E surrounded by dashed lines shown on both sides of the sliding window sash 1 is the installation layout of the solar heating device. This shows that if a solar heating device is installed on the balcony wall of a high-rise house, the incident energy into the room can be doubled. In other words, it is equivalent to doubling the window area. Since it is installed vertically, the installation space is minimized, there is no drilling or screwing work, the balcony wall is behind the handrail, so the device is not exposed to wind and rain and there is no snow accumulation, the heat collecting panel is difficult to see from the outside and does not affect the scenery, and since the solar altitude is low in winter, the amount of incident light is greater than in summer. Due to these characteristics, the present invention is ideal for using natural energy on the balcony of an apartment building. [Explanation of symbols]

[0051] REFERENCE SIGNS LIST 1 Sliding window sash 1a Outdoor window 1b Indoor window 1c, 1d Door roller 2 Window frame 2a Upper horizontal frame 2b Lower horizontal frame 2c Vertical frame 2d, 2e Upper rail 2f, 2g Lower rail 2h Upper screen rail 2i Lower screen rail 2j Outdoor side G Glass plate material 3 Crescent lock 4a, 4b Sealing member 5 Window frame ventilation passage 5a Indoor opening 5b Outdoor opening 6 External housing 6A First external housing 6B Second external housing 6a Indoor vent 6b Outdoor vent 6c Mounting portion 6d Mounting surface 7 Fixing member 8a, 8b Fixing screw 9 L-shaped member 10 External ventilation pipe 10A First external ventilation pipe 10B Second external ventilation pipe 11 Windbreak member 12 Opening / closing valve 12a Disk-shaped shutter 12b Rotating shaft 12c Valve opening / closing handle 13 Pipe fixing saddle 14 Electric fan 15 Power source 16 Control panel 17 Wiring 18 Building exterior wall 19 Heat collecting panel 19a Insulating casing 19b Flat heating element 19c Light collecting surface 19d, 21a Outdoor air intake 19e, 22a Hot air outlet 20 Double glass tube (vacuum tube) 21 Intake duct 22 Exhaust duct 23a, 23b Variable length pole 24 Floor surface 25 Eaves 26a, 26b Lock screw

Claims

1. A window frame ventilation passage formed by removing a seal member provided to seal between an upper horizontal frame and an upper rail of an exterior window of a pair of windows provided within a window frame of a sliding window sash; An external housing that is attached closely to the exterior side surface of the upper horizontal frame and that is in close or slidable contact with the upper screen rail; An indoor side vent opening on the upper surface of the external housing between the outdoor side surface of the upper horizontal frame and the upper screen rail; an outdoor vent opening that opens to the outside of the room on any one surface of the external housing, separate from the indoor vent opening; A window ventilation device characterized in that outside air is drawn into the room or indoor air is exhausted to the outside via the outdoor air vent, the external casing, and the indoor air vent through the window frame air passage.

2. A window ventilation device as described in claim 1, wherein a windbreak member covering the gap between the upper horizontal frame and the upper screen rail is fixed to the outdoor side of the upper horizontal frame in the gap on both sides of the window frame ventilation passage that is not covered by the external casing.

3. 3. The window ventilation device according to claim 1, further comprising an opening / closing valve that is connected to the outdoor vent port of the outer casing and that can open and close an external pipe for ventilation between the inside and the outside of the room.

4. 3. A window ventilation device according to claim 1, wherein an air vent pipe is connected to an outdoor air vent provided on one longitudinal end face of the cylindrical external housing, the air vent pipe being fixed to the window frame or a building wall and slidably fitted into the outdoor air vent within the length range of the external housing.

5. 3. A window ventilation device according to claim 1, wherein an electric fan capable of rotating in both directions is provided between the indoor vent and the outdoor vent in the external housing, and forced air supply or forced exhaust is performed by switching the direction of rotation of the electric fan.

6. A window ventilation device as described in claim 1 or claim 2, comprising an air-supply type solar heating device equipped with an outside air intake port for taking in outside air into a heat collection panel, a hot air outlet port for sending outside air heated by the heat collection panel into the room, and an electric fan that can rotate forward and backward to forcibly blow air inside the heat collection panel, wherein the heat collection panel is provided near the outdoor window of a pair of windows or on an exterior wall surface near the outdoor window, and the hot air outlet port of the heat collection panel is connected by piping to the outdoor air vent of the external casing.

7. 3. A window ventilation device as described in claim 1 or claim 2, in which a first external casing and a second external casing are arranged side by side on the upper horizontal frame of an outdoor window, a warm air outlet of the heat collecting panel and an outdoor air vent of the first external casing are connected by piping, and an outside air intake of the heat collecting panel and an outdoor air vent of the second external casing are connected by piping, and warm air heated by the heat collecting panel is sent into the room via the first external casing, indoor air is taken in by the outside air intake into the heat collecting panel via the second external casing, and the warm air reheated by the heat collecting panel is circulated between the room and the heat collecting panel via the first external casing and the second external casing.

8. A window ventilation device as described in claim 6 or claim 7, which has a pair of variable-length poles arranged vertically on both sides of the collector panel of the solar heating device or on the back of the central part of the collector panel so as not to interfere with the outside air intake and warm air outlet, and the back of the collector panel is brought into contact with the exterior wall of the building and raised to support positive wind pressure load, the variable-length poles are extended to the eaves and fixed against them, and the variable-length poles and the eaves are firmly fixed with lock screws to support negative wind pressure load.

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