Blind

Abstract

To provide a blind capable of preventing intrusion of rainwater or the like into a head box and discharging water to the outside even if the water intrudes.SOLUTION: The blind 100 opens and closes the slats 120 by driving the driving unit 110, and includes a head box 130 accommodating the driving unit 110 and supporting the slats 120 in a hanging manner, side caps 140 mounted at left and right ends of the head box 130, a cover 150 covering an upper opening of the head box 130, and a drip-proof member 160 mounted between the driving unit 110 and the side caps 140 to be in close contact with an inner circumferential surface of the head box 130. A hole part 131 capable of discharging water between the side cap 140 and the drip-proof member 160 is penetratingly formed on the bottom surface of the head box 130. Therefore, it is possible to prevent rainwater or the like from entering the head box and to discharge water to the outside even if the rainwater or the like enters the head box.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to blinds that are installed semi-exteriorly, such as between double-skinned windows, or exteriorly, such as outdoors. [Background technology]

[0002] A conventional blind is disclosed in Japanese Patent Laid-Open Publication No. 2017-203345 (Patent Document 1). The blind disclosed in this document has a drive mechanism housed in a storage box, which is a head box with an open bottom, and a movable louver section made up of multiple slats that can be raised and lowered by the drive mechanism. A partition plate separates the movable louver section from the drive mechanism so as to cover the opening of the storage box.

[0003] According to this, the drive mechanism is located in a space within the storage box that extends from the upper side to the rear side of the movable louver, and by separating the space above and the rear side of the movable louver with a partition plate, rainwater and the like can be prevented from entering the drive mechanism. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2017-203345 Summary of the Invention [Problem to be solved by the invention]

[0005] In the conventional blinds disclosed in Patent Document 1, the storage box is composed of an upper frame, an inspection panel, side cover materials, and left and right vertical frames. This poses a problem in that rainwater may seep in through the joints between the components.

[0006] The present invention was made in consideration of these problems, and its purpose is to provide a blind that prevents rainwater and other water from entering the head box and can drain water to the outside even if it does enter. [Means for solving the problem]

[0007] In order to solve the above problems, according to the present invention, there is provided a blind that opens and closes a shielding material by driving a drive unit, comprising: a head box that houses the drive unit and supports the shielding material in a hanging manner; side caps attached to the left and right ends of the head box; a cover that covers the opening at the top of the head box; and a drip-proof member that is attached so as to fit closely to the inner surface of the head box between the drive unit and the side cap, and the head box has a hole formed in the bottom surface that allows water to drain between the side cap and the drip-proof member.

[0008] This configuration prevents rainwater and the like from entering inside the head box beyond the drip-proof member, and even if rainwater and the like that cannot be prevented by the side cap and cover does enter between the side cap and the drip-proof member, it can be discharged through the hole.

[0009] The present invention can be applied in various ways. For example, the drip-proof member may have a protrusion that is inserted into the hole, and the hole may be partially open when the protrusion is inserted. With this configuration, when the drip-proof member is attached to the head box, the hole remains partially open, allowing the hole to be used for both draining water and attaching the drip-proof member.

[0010] The drip-proof member may have a wall portion facing the side cap, and a part of the protrusion may form a surface that is continuous with the surface of the wall portion facing the side cap. With this configuration, water that reaches the wall portion of the drip-proof member is likely to flow down the wall portion and be discharged through the hole.

[0011] Furthermore, the protrusion inserted into the hole may be configured to restrict movement of the head box in the longitudinal direction. With this configuration, the drip-proof member can be positioned within the head box.

[0012] Furthermore, the hole may be circular, and the protrusion may have a cross section of a substantially semicircular shape that matches the shape of the hole, so that the radius of the hole and the radius of the protrusion match. With this configuration, the radius of the protrusion matches the radius of the hole, so that the substantially semicircular protrusion can be restricted from moving within the hole.

[0013] In order to solve the above problem, according to a second aspect of the present invention, there is provided a blind that opens and closes a shielding material by driving a drive unit, comprising: a head box that houses the drive unit and supports the shielding material in a hanging position; a cover that covers an opening at the top of the head box; and a drip-proof member that is attached so as to fit closely to the inner surface of the head box on the left-right end side of the head box closer to the drive unit, wherein a hole is formed in the bottom surface of the head box that can pass through and allow water to drain between the left-right end side of the head box and the drip-proof member, and the drip-proof member has a protrusion that is inserted into the hole, and the hole is partially open when the protrusion is inserted. is provided.

[0014] This configuration prevents rainwater and the like from entering the area inside the head box beyond the drip-proof member, and allows water that does enter the edge of the head box outside the drip-proof member to be discharged through the hole. When the drip-proof member is attached to the head box, part of the hole remains open, allowing the hole to be used for both draining water and attaching the drip-proof member. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a blind that prevents rainwater and the like from entering the head box and that can drain water to the outside even if it does enter. Other effects of the present invention will be described in the detailed description of the invention below. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a front view of a blind 100 according to a first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the vicinity of the end of the head box 130. [Figure 3] 1A and 1B are perspective views of a drip-proof member 160, in which FIG. 1A shows a front surface 162a that faces the side cap 140, and FIG. 1B shows a rear surface 162b. [Figure 4] 1A and 1B are perspective views showing a state in which an end of a head box 130 is partially cut away, in which (a) shows a state in which a side cap 140 has been removed, and (b) shows a state in which a side cap 140 has been attached. [Figure 5] 10 is a plan view of the end of the head box 130, showing the relationship between the hole 131 and the protrusion 161. FIG. [Figure 6] 6A and 6B are diagrams for explaining a drip-proof member 160, in which (a) is a cross-sectional view of the head box 130 viewed downward from approximately the middle position in the vertical direction, and (b) is a cross-sectional view taken along the line AA in FIG. 6A. [Figure 7] 7A and 7B are diagrams for explaining the drip-proof member 160, in which (a) is a cross-sectional view looking rearward from approximately the middle position in the fore-and-aft direction of the head box 130, (b) is an enlarged view of part D in FIG. 7A, and (c) is a modified example of the enlarged view of part D in FIG. 7A. [Figure 8] 1A and 1B are diagrams showing the end of the head box 130, in which (a) is a perspective view and (b) is a side view. [Figure 9] 10 is a plan view of an end portion of a head box 230, showing the relationship between holes 231, 232, and 233 and a protrusion 161 of a blind 200 according to a second embodiment. FIG. [Figure 10]10 is a plan view of an end portion of a head box 330, illustrating the relationship between holes 331 and protrusions 361 of a blind 300 according to a third embodiment. FIG. [Figure 11] 10 is a plan view of an end portion of a head box 430, showing the relationship between holes 431, 432, 433 and a protrusion 461 of a blind 400 according to a fourth embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In this specification and drawings, components having substantially the same functional configuration are designated by the same reference numerals, and redundant description will be omitted. In this embodiment, the surface facing the room when the blind is installed will be referred to as the front, the surface facing the room as the back, the direction consisting of the front and back will be referred to as the front-to-back direction, and the directions to the left and right as viewed from the front of the blind will be referred to as the left-to-right direction.

[0018] (First embodiment) A first embodiment of the present invention will be described. First, the configuration of a blind 100 will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view of the blind 100 of the first embodiment. FIG. 2 is an exploded perspective view of the vicinity of the end of the head box 130. The blind 100 of this embodiment is installed between two double-layered windows with a double-skin structure to suppress increases in indoor temperature and achieve energy-saving effects. A double-skin structure is a system in which outside air passes through an opening at the top of the outdoor window between two double-layered windows installed on the indoor and outdoor sides. For this reason, blinds installed between two double-layered windows are subject to the effects of rain from outside, and rainwater may infiltrate the head box 130. The blind 100 of this embodiment drains water that has infiltrated the head box 130 and prevents water from infiltrating the drive unit 110. The blind 100 of this embodiment can be installed not only semi-exteriorly, such as inside a double-skin structure, but also outdoors.

[0019] 1 and 2, the blind 100 drives a drive unit 110 to open and close slats 120 (shielding material), and includes a head box 130 that supports the slats 120 in a suspended state, side caps 140 attached to the left and right ends of the head box 130, a cover 150 that closes the opening at the top of the head box 130, a drip-proof member 160 attached so as to be in close contact with the inner circumferential surface of the head box 130 between the drive unit 110 and the side cap 140, and a hole 131 that penetrates the bottom surface of the head box 130, and the hole 131 is configured to allow water to drain between the side cap 140 and the drip-proof member 160. Each component will be described below.

[0020] (Headbox 130) As shown in Fig. 1, the head box 130 is fixed to a window frame, ceiling, or the like (not shown) via a bracket BK. A drive unit 110, which is a mechanism for opening and closing the slats 120, is provided inside the head box 130. As shown in Fig. 1, the drive unit 110 includes a lifting drum 111, a rotating drum 112, a motor 113, a drive shaft 114, an encoder 115, and an upper limit 116.

[0021] The lifting drum 111 is a mechanism for raising and lowering the slats 120, and the upper end of the lifting tape 170 is connected to it so that it can be wound and unwound. The rotating drum 112 is a mechanism for rotating the slats 120, and the upper end of the ladder cord 180 is connected to it so that it can tilt. The motor 113 drives the lifting drum 111 and the rotating drum 112 to rotate. The drive shaft 114 transmits the driving force of the motor 113 to the lifting drum 111 and the rotating drum 112. The encoder 115 detects the direction and amount of rotation of the drive shaft 114. The upper limit 116 detects when the slats 120 have been folded up to their upper limit. The tip of the upper limit 116 protrudes below the head box 130, and abuts against it to detect when the slats 120 have been folded up to their upper limit.

[0022] As shown in Fig. 1, a power cord 117 for supplying power to the drive unit 110 and a signal line 118 for transmitting control signals to the drive unit 110 extend from the head box 130. The signal line 118 is connected to an external control unit (not shown). As shown in Fig. 2, a guide wire insertion hole 132 is formed in the bottom surface of the head box 130, through which a guide wire 190 (described later) is inserted.

[0023] The slats 120 are shielding materials that close the opening. As shown in FIG. 1, a plurality of slats 120 are supported in the vertical direction by ladder cords 180 hanging down from the head box 130. The slats 120 rotate by tilting the ladder cords 180. The slats 120 can be raised and lowered by lifting tapes 170 that hang down from the head box 130 and are connected to bottom rails 121 that are arranged below the slats 120.

[0024] As shown in FIG. 1, a guide wire 190 is stretched from the head box 130 to the floor surface FL between both ends of the slats 120 and the bottom rail 121. The guide wire 190 prevents the slats 120 and the bottom rail 121 from shaking. As shown in FIG. 2, the upper end of the guide wire 190 is inserted through a guide wire insertion hole 132 of the head box 130 and connected to a wire terminal 191 inside the head box 130. Because the wire terminal 191 has a larger diameter than the guide wire insertion hole 132, it is connected to the head box 130 in a manner that prevents it from coming off (see FIG. 4). The lower end of the guide wire 190 is connected to a guide wire tensioning tool 192 attached to the floor surface FL. In this way, the guide wire 190, which is stretched in the vertical direction by being connected at its upper end to the head box 130 and at its lower end to the floor surface FL, prevents the slats 120 and the bottom rail 121 from shaking.

[0025] (Side cap 140) As shown in FIGS. 1 and 2, the side caps 140 are attached to the left and right ends of the head box 130. The side caps 140 are formed in a shape that follows the periphery of the head box 130, and three wire insertion passages 141 are formed in the upper part in the front-to-rear direction. The wire insertion passages 141 are approximately U-shaped grooves, each with the same shape. The power cord 117 and the signal line 118 are led out from the head box 130 to the outside through the wire insertion passages 141. In this way, the wire insertion passages 141 are openings that connect the inside of the double-skin structure with the inside of the head box 130. Therefore, if rainwater gets inside the double-skin structure, there is a possibility that the rainwater will get into the head box 130 through the wire insertion passages 141.

[0026] (Cover 150) As shown in FIGS. 1 and 2, the cover 150 closes the opening at the top of the head box 130. The left and right ends of the cover 150 are covered by side caps 140. The cover 150 is configured in a shape that fits along the top surface of the drip-proof member 160 (see FIG. 6(b)). In this embodiment, the opening at the top of the head box 130 is closed by the cover 150, but the opening at the top of the head box 130 may be covered and closed using waterproof tape or the like, or waterproof tape may be attached over the cover 150 to close the gap between the head box 130 and the cover 150.

[0027] (Drip-proof member 160) The configuration of the drip-proof member 160, which is a characteristic feature of this embodiment, will be described with reference to Figures 3 and 4 in addition to Figures 1 and 2. Figure 3 is a perspective view of the drip-proof member 160, where (a) shows the front surface 162a side facing the side cap 140, and (b) shows the back surface 162b side. Figure 4 is a perspective view showing a state in which an end of the head box 130 is partially cut away, where (a) shows the state with the side cap 140 removed, and (b) shows the state with the side cap 140 attached.

[0028] The drip-proof member 160 prevents rainwater or other water that has entered the head box 130 through the wire insertion passage 141 of the side cap 140 from penetrating further into the head box 130 than the drip-proof member 160, thereby preventing water from entering the drive unit 110. As shown in FIG. 1 , the drip-proof member 160 is provided to separate the drive unit 110 and the side cap 140 and is attached so as to closely contact the inner circumferential surface of the head box 130. The drip-proof member 160 is preferably made of an elastic soft resin such as rubber or silicone. This improves the adhesion of the drip-proof member 160 to the head box 130. This also prevents rainwater or other water from penetrating further into the head box 130 than the drip-proof member 160 due to gaps between the drip-proof member 160 and the head box 130 or due to capillary action.

[0029] 3, the drip-proof member 160 has a wall portion 162 that faces the side cap 140 and divides the space inside the head box 130 into left and right portions, and a peripheral edge portion 163 that is formed around the entire periphery of the wall portion 162. The wall portion 162 is large enough to close almost the entire internal space formed by the cross section of the head box 130 in the front-to-rear direction. The peripheral edge portion 163 is formed to protrude from a front surface 162a of the wall portion 162 that faces the side cap 140 toward a back surface 162b.

[0030] As shown in Figures 3 and 4, a protrusion 161 protrudes from the bottom of the peripheral edge 163 to be inserted into the hole 131 of the head box 130. The protrusion 161 restricts movement of the drip-proof member 160 in the longitudinal direction of the head box 130. The protrusion 161 is inserted into the hole 131 while leaving part of the hole 131 open. A part of the protrusion 161 of the drip-proof member 160 forms a flat surface portion 161a that is continuous with the surface 162a of the wall portion 162 that faces the side cap 140. The other part of the protrusion 161 forms an arc-shaped portion 161b that is slightly larger than a semicircle.

[0031] The relationship between the arc-shaped portion 161b of the protrusion 161 and the hole 131 will be described with reference to Fig. 5. Fig. 5 is a plan view of the end portion of the head box 130, showing the relationship between the hole 131 and the protrusion 161. If the radius of the hole 131 is R and the radius of the protrusion 161 is r, then the radius R of the hole 131 is approximately equal to the radius r of the protrusion 161. Therefore, the diameter 2R of the hole 131 and the diameter 2r of the protrusion 161 are approximately the same size, and therefore when the protrusion 161 is inserted into the hole 131, the movement of the protrusion 161 relative to the hole 131 is restricted.

[0032] Three drip-proof member wire insertion passages 164 are formed in the upper part of the peripheral edge 163 at positions corresponding to the wire insertion passages 141 of the side cap 140. The three drip-proof member wire insertion passages 164 are approximately U-shaped grooves, similar to the wire insertion passages 141 of the side cap 140, and each has the same shape.

[0033] 3 and 4, skirt portions 165 are formed on both sides and the bottom of the peripheral edge 163, protruding in a tapered shape from the center position in the width direction toward the ends to the sides or downward. The skirt portions 165 are intended to improve adhesion to the inner peripheral surface of the head box 130, and are formed over almost the entire length of both sides and the bottom of the peripheral edge 163. This allows the drip-proof member 160 to be attached so as to adhere closely to the inner peripheral surface of the head box 130.

[0034] The state in which the side caps 140 and the drip-proof member 160 are attached to the head box 130 will be described with reference to Figs. 6 to 8 in addition to Fig. 4. Figs. 6 and 7 are diagrams for explaining the drip-proof member 160. Fig. 8 is a diagram showing an end of the head box 130.

[0035] As shown in FIG. 4, the drip-proof member 160 is disposed so that the surface 162a of the wall portion 162 faces the side cap 140, and the protrusion 161 is inserted into the hole 131 of the head box 130. At this time, as shown in FIG. 7, the arc-shaped portion 161b of the protrusion 161 faces the drive unit 110, and the flat portion 161a faces the side cap 140. As described above, the arc-shaped portion 161b has an arc shape that is slightly larger than a semicircle, and the diameters of the arc-shaped portion 161b and the hole 131 are approximately the same size, so the protrusion 161 does not move in the longitudinal direction of the side cap 140. Therefore, the drip-proof member 160 can be positioned by the protrusion 161.

[0036] 6, both side surfaces and the bottom surface of the drip-proof member 160 are in close contact with the inner peripheral surface of the head box 130, and the close contact is improved by the skirt portion 165. Furthermore, the top surface of the drip-proof member 160 is in close contact with the inner peripheral surface of the cover 150, but a space is formed between the top surface of the drip-proof member 160 and the inner peripheral surface of the cover 150 by the drip-proof member wiring insertion passage 164, so that the power cord 117 and the signal line 118 that are led from the drive unit 110 to the outside of the head box 130 can be inserted therethrough.

[0037] Even when the protrusion 161 is inserted into the hole 131, the protrusion 161 only blocks about two-thirds of the hole 131, and therefore the hole 131 is left open with about one-third of the hole where the protrusion 161 is not inserted. Therefore, the drive unit 110 side of the hole 131 is blocked by the protrusion 161, but the side cap 140 side is left open, and therefore rainwater or the like that has entered between the side cap 140 and the drip-proof member 160 can be discharged through the hole 131.

[0038] 7(a) and 7(b), the flat surface 161a of the protrusion 161 forms a flat surface that continues from the surface 162a of the wall 162. By making a part of the protrusion 161 a flat surface that continues from the wall 162 in this way, water that reaches the wall 162 flows down along the surface 162a and the flat surface 161a, and is therefore easily discharged from the hole 131.

[0039] 7(c), a portion of the protrusion 161 may be configured to form an inclined surface 161c that continues from the surface 162a of the wall portion 162 and is inclined relative to the wall portion 162 toward the side cap 140. Alternatively, the inclined surface may be inclined in a direction away from the side cap 140 relative to the wall portion 162, opposite to the direction shown in FIG. 7(c). In this way, by forming a portion of the protrusion 161 as a surface that continues from the wall portion 162, water that reaches the wall portion 162 flows down along the surface 162a and the inclined surface 161c, as described above, and is easily discharged from the hole 131.

[0040] As shown in Fig. 8, after each component has been assembled to the head box 130, the side caps 140 are assembled so as to cover the ends of the head box 130 and the cover 150. The wire insertion passages 141 of the side caps 140 and the wire insertion passages 164 of the drip-proof member 160 are arranged in corresponding positions, so that the power cord 117 and the signal line 118 can be easily led out to the outside. The power cord 117 and the signal line 118 can be led out from any position of the three wire insertion passages 141 and the wire insertion passages 164 of the drip-proof member. In this embodiment, the power cord 117 and the signal line 118 are led out from the wire insertion passages 141 and the wire insertion passages 164 of the drip-proof member at both ends, respectively.

[0041] (Effects of the first embodiment) As described above, according to this embodiment, rainwater and the like is prevented from entering inside the head box 130 beyond the drip-proof member 160, and even if water does enter between the side cap 140 and the drip-proof member 160, it can be discharged through the hole portion 131.

[0042] Furthermore, when the drip-proof member 160 is attached to the head box 130, a portion of the hole 131 remains open, allowing the hole 131 to be used both to drain water and to attach the drip-proof member 160.

[0043] Furthermore, by making the surface 162a of the wall portion 162 of the drip-proof member 160 and the flat portion 161a of the protrusion 161 a continuous flat surface, water that reaches the drip-proof member 160 can be discharged through the hole portion 131 along the surface 162a of the wall portion 162 and the flat portion 161a of the protrusion 161.

[0044] Furthermore, since the protrusion 161 inserted into the hole 131 is restricted from moving in the longitudinal direction of the head box 130, the drip-proof member 160 can be positioned within the head box 130.

[0045] Furthermore, since the diameters of the hole 131 and the protrusion 161 are the same, the movement of the protrusion 161 within the hole 131 can be restricted.

[0046] (Second embodiment) A blind 200 according to a second embodiment of the present invention will be described with reference to Fig. 9. Fig. 9 is a plan view of the end of the head box 230, showing the relationship between the hole portions 231, 232, and 233 and the protrusion 161 of the blind 200 according to this embodiment. This embodiment differs from the first embodiment in the configuration of the hole portions 231, 232, and 233. This embodiment will be described mainly focusing on the differences from the first embodiment.

[0047] As shown in Fig. 9, the head box 230 has three holes 231, 232, and 233 arranged side by side in the front-to-rear direction. The shapes of the three holes 231, 232, and 233 can be configured similarly to the hole 131 of the first embodiment. As in the first embodiment, the protrusion 161 of the drip-proof member 160 is inserted into the central hole 231 of the three holes 231, 232, and 233, and the bottom surface of the drip-proof member 160 is placed on the holes 232 and 233 at both ends. The portion of the central hole 231 into which the protrusion 161 is not inserted and the portions of the hole portions 232 and 233 at both ends where the drip-proof member 160 is not placed are open, so water can be discharged from these openings.

[0048] (Effects of the second embodiment) As described above, according to this embodiment, the three holes 231, 232, and 233 arranged side by side in the front-rear direction of the head box 230 allow water to be efficiently discharged.

[0049] (Third embodiment) A blind 300 according to a third embodiment of the present invention will be described with reference to Fig. 10. Fig. 10 is a plan view of the end of the head box 330, showing the relationship between the hole 331 and the protrusion 361 of the blind 300 according to this embodiment. This embodiment differs from the first embodiment in the configuration of the hole 331 and the protrusion 361. This embodiment will be described mainly focusing on the differences from the first embodiment.

[0050] 10, the head box 330 has a rectangular hole 331 formed therein instead of the circular hole 131 of the first embodiment. Furthermore, the protrusion 361 of the drip-proof member 360 is also formed in a rectangular shape corresponding to the shape of the hole 331. As in the first embodiment, the protrusion 361 closes approximately two-thirds of the hole 331 on the drive unit 110 side, and approximately one-third of the hole 331 on the side of the side cap 140 is open. Therefore, water can be discharged through this opening.

[0051] (Effects of the third embodiment) As described above, according to this embodiment, since the hole 331 and the protrusion 361 are rectangular, the drip-proof member 360 can be securely attached to the head box 330 without rotating around the protrusion 361 .

[0052] (Fourth embodiment) A blind 400 according to a fourth embodiment of the present invention will be described with reference to Fig. 11. Fig. 11 is a plan view of the end of the head box 430, showing the relationship between the holes 431, 432, and 433 and the protrusion 461 of the blind 400 according to this embodiment. This embodiment differs from the first embodiment in the configurations of the holes 431, 432, and 433 and the protrusion 461. This embodiment will be described mainly focusing on the differences from the first embodiment.

[0053] In this embodiment, a hole 431 for attaching a drip-proof member 460 and holes 432 and 433 for draining water are separately provided. As shown in FIG. 11 , the head box 430 has a hole 431 formed in the same position as the hole 131 in the first embodiment. Two holes 432 and 433 are also formed on both front-rear sides of the wire terminal 191, which is located closer to the side cap 140 than the hole 431. The protrusion 461 of the drip-proof member 460 has a cylindrical shape corresponding to the hole 431. When the protrusion 461 is inserted, the hole 431 is completely blocked. Therefore, rainwater does not drain through the hole 431, but since no gap is formed between the cylindrical protrusion 461 and the hole 431, the positioning of the drip-proof member 460 can be improved. Water is drained through the holes 432 and 433, which are spaced apart from the drip-proof member 460.

[0054] (Effects of the fourth embodiment) As described above, according to this embodiment, cylindrical protrusion 461 is inserted into hole 431 for attaching drip-proof member 460, so no gap is formed between protrusion 461 and hole 431, improving the positioning of drip-proof member 460. Furthermore, holes 432 and 433 are not blocked by drip-proof member 460, so water can be efficiently discharged.

[0055] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the claims, and it is understood that these modifications and alterations also fall within the technical scope of the present invention.

[0056] For example, in the first embodiment described above, the wall portion 162 of the drip-proof member 160 is large enough to cover substantially the entire internal space of the head box 130 in the front-to-rear cross section, but the present invention is not limited to this example. The drip-proof member can be designed as desired, as long as it prevents rainwater and the like from entering the inside of the head box beyond the drip-proof member, and if rainwater and the like does enter between the side cap and the drip-proof member, it can be discharged through the holes. For example, the wall portion can be designed to have any height, such as lower than the height of the head box, or to have any shape, such as having holes or the like provided in any location. The same applies to other embodiments.

[0057] Furthermore, in the first embodiment described above, the protrusion 161 is configured to restrict movement of the head box 130 in the longitudinal direction relative to the hole 131, but the present invention is not limited to this example. Any design is possible as long as the configuration allows for attachment of a drip-proof member. For example, the protrusion can be designed to be smaller than the hole so that it can move freely relative to the hole. Alternatively, the drip-proof member can be designed not to have a protrusion, but to restrict movement in the longitudinal direction by improving adhesion with the inner surface of the head box. The same applies to other embodiments.

[0058] Furthermore, in the first embodiment, the arc-shaped portion 161b of the protrusion 161 is shaped to fit the hole 131, but the present invention is not limited to this example. Any design is possible as long as the drip-proof member 160 can be positioned and rainwater can be drained through the hole. For example, the protrusion can be designed in any shape, such as a polygon or a star. The same applies to the other embodiments.

[0059] Furthermore, in the first embodiment, the surface 162a of the wall portion 162 of the drip-proof member 160 is flat, but the present invention is not limited to this example. The drip-proof member can be designed in any way as long as it prevents rainwater from entering the inside of the head box beyond the drip-proof member and, even if rainwater does enter between the side cap and the drip-proof member, it can be discharged through the holes. For example, the surface of the wall portion can be designed in any shape, such as forming a continuous wave shape in the front-to-rear direction or forming multiple grooves leading to the holes. The same applies to other embodiments.

[0060] In the first embodiment, a portion of the protrusion 161 is configured to form a surface that continues from the surface 162a of the wall 162, but the present invention is not limited to this example. Any design is possible as long as the configuration makes it easy for water that reaches the wall of the drip-proof member to be discharged through the hole. For example, a water flow path such as a groove may be formed in the protrusion.

[0061] Furthermore, in the first embodiment described above, the side caps 140 are attached to both the left and right ends of the head box 130, but the present invention is not limited to this example. Any design is possible as long as water that has entered the end of the head box, which is outside the drip-proof member, can be discharged through the holes. For example, the head box may be open at both the left and right ends, or may be configured so that components other than the side caps close both ends. The same applies to other embodiments.

[0062] Furthermore, in the second embodiment described above, the protrusion 161 of the drip-proof member 160 is configured to be inserted into hole 231 of the three holes 231, 232, and 233, but the present invention is not limited to this example. The protrusion 161 may be configured to be inserted into either hole 232 or 233, or multiple protrusions 161 may be formed and inserted into any two or all three of the three holes 231, 232, and 233, or any other design is possible.

[0063] The above-described embodiments, applications, modifications, etc. can be implemented in appropriate combinations. [Explanation of symbols]

[0064] 100, 200, 300, 400 blinds 110 Drive unit 111 Lifting drum 112 Rotating Drum 113 Motor 114 Drive shaft 115 Encoder 116 Upper Limit 117 Power cord 118 Signal Line 120 slats (shielding material) 130, 230, 330, 430 headbox 131, 231, 232, 233, 331, 431, 432, 433 holes 132 Guidewire insertion hole 140 Side Cap 141 Wiring passage 150 Cover 160 Drip-proof material 161, 361, 461 protrusions 161a Plane part 161b Arc-shaped part 161c Slope section 162 Wall 162a Surface 162b back side 163 Periphery 164 Drip-proof member wiring passage 165 Skirt Club 170 Lifting Tape 180 Ladder Code 190 Guidewire 191 Wire Terminal 192 Guidewire tensioning tool FL floor surface

Claims

1. A blind that opens and closes a shielding material by driving a drive unit, a head box that accommodates the drive unit and supports the shielding material in a suspended state; side caps attached to the left and right ends of the head box; a cover that closes the opening at the top of the head box; a drip-proof member attached to the inner circumferential surface of the head box between the drive unit and the side cap so as to be in close contact with the inner circumferential surface of the head box; Equipped with A blind, characterized in that a hole portion is formed through the bottom surface of the head box to allow water between the side cap and the drip-proof member to be discharged.

2. 2. The blind according to claim 1, wherein the drip-proof member has a protrusion that is inserted into the hole, and the hole is partially open when the protrusion is inserted.

3. the drip-proof member has a wall portion facing the side cap, 3. The blind according to claim 2, wherein a part of the protrusion forms a surface that is continuous with a surface of the wall portion that faces the side cap.

4. The blind according to claim 2 or 3, wherein the protrusion inserted into the hole restricts movement of the head box in the longitudinal direction.

5. 5. The blind according to claim 4, wherein the hole is circular, the protrusion has a cross section of a substantially semicircular shape that matches the shape of the hole, and the radius of the hole and the radius of the protrusion are the same.

6. A blind that opens and closes a shielding material by driving a drive unit, a head box that accommodates the drive unit and supports the shielding material in a suspended state; a cover that closes the opening at the top of the head box; a drip-proof member attached to the inner circumferential surface of the head box closer to the left and right ends of the head box than the drive unit so as to be in close contact with the inner circumferential surface of the head box; Equipped with a hole portion through which water can be discharged between the left and right ends of the head box and the drip-proof member is formed in the bottom surface of the head box; The blind is characterized in that the drip-proof member has a protrusion that is inserted into the hole, and the hole is partially open when the protrusion is inserted.

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