Remote control light receiving structure for electric roller blinds

Abstract

To provide a remote-control light receiving structure for a motorized roll screen with improved maintainability.SOLUTION: A remote-control light receiving structure for a motorized roll screen includes a light receiving unit 160 including light receiving elements 164-1 and 164-2 that receive signals from a remote controller R, wherein the light receiving unit 160 is detachable from a side bracket 130 that supports a winding pipe 120. In such a structure, configuring the light-receiving unit to be detachable from the side bracket makes it possible for the light-receiving structure to be easily maintainable when necessary. Thus, the maintainability can be improved.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a remote control light receiving structure for an electric roller blind. [Background technology]

[0002] A conventional remote control light receiving structure for an electric roller blind is disclosed in Japanese Patent Publication No. 4740831 (Patent Document 1). In the remote control light receiving structure for an electric roller blind disclosed in Patent Document 1, a bracket cover attached to the outer surface of one of the side brackets has a transparent, arc-shaped light receiving unit cover attached to its lower end, which is a separate member from the bracket cover. Furthermore, a chip-shaped light receiving element having a light receiving unit that receives pulse signals emitted from the remote control through the light receiving unit cover is attached to the bracket cover via a light receiving unit holder. The light receiving unit holder is attached to the bracket cover so as to be rotatable around the center point of the arc-shaped light receiving unit cover. The light receiving element rotates integrally with the light receiving unit holder, so that the light receiving direction of the light receiving unit can be changed between two directions that are symmetrical about a vertically downward direction but are out of phase with each other.

[0003] With this configuration, the light receiving direction of the light receiving unit attached to the side bracket can be changed to two directions that are symmetrical about the vertical downward direction and out of phase with each other, which has the effect of enabling remote control regardless of the installation form of the electric roller blind. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4740831 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the remote control light receiving structure of the electric roller blind, if the light receiving direction needs to be adjusted after the electric roller blind is installed, the light receiving unit must be rotated from the side using a screwdriver or similar tool. However, there is not always enough working space to do this. For example, if the space between the electric roller blind and the wall is narrow, it is difficult to use a screwdriver to perform the adjustment. As such, the above structure has issues with maintenance.

[0006] The present invention has been made in view of the above problems, and an object of the present invention is to provide a remote control light receiving structure for an electric roller blind that is easy to maintain. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a remote control light receiving structure for an electric roller blind, characterized in that it is equipped with a light receiving unit including a light receiving element that receives signals from a remote control, and the light receiving unit is detachable from a side bracket that supports the winding pipe.

[0008] According to this configuration, the light receiving unit is detachable from the side bracket, so that the light receiving structure can be easily maintained when necessary, thereby improving maintainability.

[0009] The present invention can be applied in a variety of ways. For example, the light receiving unit may include a plurality of light receiving elements, and the light receiving directions of the light receiving elements may be different from one another. For example, the light receiving elements may be attached at different angles from one another. With this configuration, by orienting the light receiving directions (light receiving ranges) of the plurality of light receiving elements in different directions from one another, remote control operation can be performed without reducing light receiving sensitivity, thereby achieving a light receiving structure that is easy to maintain while maintaining light receiving sensitivity.

[0010] Furthermore, the light receiving unit may include one light receiving element, and the light receiving direction of the light receiving element may be configured to be variable. For example, the light receiving element may be configured to have a variable mounting angle. More specifically, the mounting angle of a board (described below) on which the light receiving element is mounted when attached to the bracket cover may be configured to be variable. That is, the light receiving direction of the light receiving element may be configured to be variable by making the mounting angle of the board relative to the bracket cover variable. With this configuration, remote control operation can be performed without reducing light receiving sensitivity by changing the light receiving direction of the light receiving element depending on the situation, thereby achieving a light receiving structure that is easy to maintain while maintaining light receiving sensitivity.

[0011] Furthermore, the light-receiving unit may be detachable from either the left or right side bracket. With this configuration, the light-receiving unit can be attached and detached by switching between the left and right sides, which allows for flexible installation that is not limited by the installation location of the electric roller blind, while also providing a light-receiving structure that is easy to maintain. For example, this can be achieved by making the attachment and detachment structures of the left and right side brackets symmetrical.

[0012] The light-receiving unit may be provided on a bracket cover that is detachable from the side bracket, and a portion of the bracket cover may be configured as a light-receiving cover that is capable of transmitting signals from the remote control. With this configuration, the light-receiving unit is provided on the bracket cover, making it easily detachable from the side bracket, resulting in a light-receiving structure that is easier to maintain. Furthermore, by making it possible to attach the bracket cover to the side bracket in a direction perpendicular to the longitudinal direction of the winding pipe (a direction parallel to the surface of the side bracket), maintenance can be easily performed even if there is not enough space between the electric roller blind and the wall, for example.

[0013] Furthermore, a first bracket cover and a second bracket cover that is a separate member from the first bracket cover and allows signals from the remote control to pass through may be configured to be detachable from each other in a direction perpendicular to the longitudinal direction of the winding pipe, and the light-receiving unit may be provided on the second bracket cover. According to this configuration, the light-receiving unit is provided on a detachable bracket cover, making it easier to attach and detach from the side bracket, resulting in a light-receiving structure with improved maintainability. Furthermore, because the bracket cover can be attached to the side bracket in a direction perpendicular to the longitudinal direction of the winding pipe (a direction parallel to the surface of the side bracket), maintenance can be easily performed even if there is not enough space between the electric roller blind and the wall, for example.

[0014] Furthermore, a gap may be provided between the side bracket and a part of the bracket cover to accommodate the light receiving unit. With this configuration, the light receiving unit can be accommodated without making the bracket cover thicker, so the width of the outer parts (side bracket + bracket cover) can be made smaller than both ends of the winding pipe, allowing the screen width to be increased for the opening where the electric roller blind is installed. [Effects of the Invention]

[0015] The remote control light receiving structure for an electric roller blind of the present invention can improve maintainability. 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] 1A and 1B are front views showing the overall configuration of the electric roller blind 100 of the first embodiment, in which (a) shows the state in which the screen 110 is lowered, and (b) shows the state in which the screen 110 is raised. [Figure 2]1A and 1B are perspective views of an electric roller blind 100, in which FIG. 1A shows a state in which a bracket cover 150 is removed, and FIG. 1B shows a state in which the bracket cover 150 is fitted. [Figure 3] 1A and 1B are side views of the electric roller blind 100 on the side where the light receiving unit 160 is provided, where FIG. 1A shows the state where the bracket cover 150 is removed, and FIG. 1B shows the bracket cover 150. [Figure 4] 1 is a cross-sectional view of an end portion of the electric roller blind 100. FIG. [Figure 5] FIG. 2 is a plan view showing the internal configuration of a set frame 140. [Figure 6] 1A and 1B are diagrams showing the arrangement of a side bracket 130 and a light receiving unit 160, in which (a) is a partial cross-sectional view seen from the front, and (b) is a partial cross-sectional view seen from the side. [Figure 7] 1A and 1B are side views of the electric roller blind 100 on the side where the light receiving unit 160 is not provided, where FIG. 1A shows the state where the bracket cover 150 is removed, and FIG. 1B shows the bracket cover 170. [Figure 8] 10A and 10B are diagrams showing the attached and detached state of the bracket cover 150, in which (a) is a partial cross-sectional view seen from the front, and (b) is a partial cross-sectional view seen from the side. [Figure 9] 10A and 10B are diagrams for explaining the state of the light receiving elements 164-1 and 164-2 relative to the installation direction of the electric roller blind 100, where (a) is a diagram for use when attached to the ceiling, and (b) is a diagram for use when attached to the front. [Figure 10] 10A and 10B are diagrams showing the configuration of an electric roller blind 200 according to a second embodiment, in which (a) is a front view and (b) is a plan view. [Figure 11] 10A and 10B are diagrams for explaining the state of the light receiving elements 264-1 and 264-2 relative to the installation direction of the electric roller blind 200, where (a) is a diagram for use when attached to the ceiling, and (b) is a diagram for use when attached to the front. [Figure 12]10A and 10B are schematic diagrams showing the configuration of an electric roller blind 300 of the third embodiment, in which (a) is a diagram showing the state in which the first bracket cover 350, the second bracket cover 352, and the light receiving unit 360 are assembled, and (b) is a side view showing the state in which the second bracket cover 352 and the light receiving unit 360 have been removed from the first bracket cover 350. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and drawings, components having substantially the same functional configurations are designated by the same reference numerals, and redundant explanations will be omitted.

[0018] (First embodiment) The configuration of an electric roller blind 100 according to a first embodiment will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a front view showing the overall configuration of the electric roller blind 100 of this embodiment. Fig. 2 is a perspective view of the electric roller blind 100.

[0019] 1, the electric roller blind 100 is configured to include a screen 110 that opens and closes an opening such as a window and divides an indoor space, a winding pipe 120 to which the upper end of the screen 110 is connected so that it can be wound up and unwound, side brackets 130 that rotatably support both ends of the winding pipe 120, a bracket cover 150 attached to one of the side brackets 130, a light-receiving unit 160 provided on the bracket cover 150, and a bracket cover 170 attached to the other side bracket 130. Each part of the electric roller blind 100 will be described in detail below.

[0020] (Screen 110) The screen 110 is used to open and close openings such as windows and to partition indoor spaces. As shown in Fig. 1, the screen 110 has an upper end connected to a winding pipe 120 so that it can be wound up and unwound, and a weight bar 112 is attached to the lower end. The weight bar 112 applies tension to the screen 110.

[0021] (winding pipe 120) The take-up pipe 120 lifts and lowers the screen 110 by winding and unwinding the screen 110. As shown in FIG. 1, a motor 122 that rotates the take-up pipe 120 is provided inside the take-up pipe 120. Bearings 124 are provided at both ends of the take-up pipe 120. As shown in FIG. 2, both ends of the take-up pipe 120 are rotatably supported by side brackets 130 via the bearings 124.

[0022] (Side bracket 130) The side brackets 130 rotatably support both ends of the winding pipe 120. The side brackets 130 supporting both ends of the winding pipe 120 have the same configuration. Here, the right side bracket 130 when looking at the front of the electric roller shade 100 will be used as an example, and explanation will be given mainly with reference to Figures 3 and 4. Figure 3 is a side view of the side of the electric roller shade where the light receiving unit 160 is provided. Figure 4 is a cross-sectional view of the end of the electric roller shade 100.

[0023] 3 and 4, the side bracket 130 is configured in the shape of a rectangular thin plate. The upper end of the side bracket 130 is aligned with the upper end of the set frame 140, and the lower end is positioned higher than the lower end of the take-up pipe 120. The side bracket 130 has an upper opening 130a formed in a position corresponding to the set frame 140. A motor communication line 142 and a light-receiving unit communication line 143, which are led out from the set frame 140, are inserted into the upper opening 130a.

[0024] The side bracket 130 also has a lower opening 130b formed in a position corresponding to the take-up pipe 120. The support shaft 126 of the bearing 124 is inserted into the lower opening 130b to support it. The support shaft 126 has an insertion hole 126a formed therein that penetrates in the axial direction. The motor communication line 142 is led out from the upper opening 130a and introduced into the take-up pipe 120 via the insertion hole 126a.

[0025] 3, the side bracket 130 is attached to the set frame 140 at positions adjacent to the upper opening 130a with screws 132, and is attached to the bearings 124 at positions adjacent to the lower opening 130b with screws 134. A bracket cover 150, which will be described later, is detachably attached to the side bracket 130.

[0026] (Set Frame 140) The set frame 140 is used to fix the electric roller blind 100 to a window frame, ceiling, wall, etc. via mounting brackets 144. As shown in FIG. 1, the set frame 140 is formed in a long box shape and is disposed over the entire longitudinal length of the winding pipe 120. As shown in FIG. 2, side brackets 130 are attached to both ends of the set frame 140. The internal configuration of the set frame 140 will be explained below mainly with reference to FIG. 5. FIG. 5 is a plan view showing the internal configuration of the set frame 140.

[0027] As shown in Fig. 5, a control unit 146 that controls the driving of the motor 122 is disposed within the set frame 140. The above-mentioned motor communication line 142 (not shown) and light-receiving unit communication line 143 are led out from the control unit 146. As shown in Fig. 4, the motor communication line 142 is disposed below the light-receiving unit communication line 143 within the set frame 140, and is led out of the upper opening 130a together with the light-receiving unit communication line 143.

[0028] 3, the motor communication line 142 is introduced into the take-up pipe 120 via the insertion portion 126a and connected to the motor 122. A communication line connector 145 is connected to the tip of the light-receiving unit communication line 143. The communication line connector 145 is connected to a light-receiving element connector 168 of the light-receiving unit 160, which will be described later.

[0029] As shown in Fig. 5, the control unit 146 is supplied with power from an external source via a power cord 148. A power connector 149 for connecting to an external power source is provided at the end of the power cord 148. As shown in Fig. 4, the power cord 148 is led out upward from the end of the set frame 140.

[0030] (Bracket cover 150) The bracket cover 150 is detachably attached to the side bracket 130. As shown in FIG. 2, the bracket cover 150 is configured to cover the side bracket 130 and the lower end of the take-up pipe 120. An opening 150a is formed at the lower end of the bracket cover 150, as shown in FIG. 3(b). A light-receiving unit 160 is attached to the lower part of the bracket cover 150. A light-receiving cover 162 of the light-receiving unit 160 is disposed in the opening 150a of the bracket cover 150.

[0031] (Light receiving unit 160) The light receiving unit 160 includes light receiving elements 164-1 and 164-2 that receive signals from the remote control R, and is configured to be detachable from the side bracket 130 that supports the take-up pipe 120. As shown in Fig. 1, the light receiving unit 160 is provided on the bracket cover 150. The configuration of the light receiving unit 160 will be described with reference to Fig. 6 in addition to Fig. 3.

[0032] As shown in Fig. 3(b), the light receiving unit 160 includes two light receiving elements 164-1 and 164-2. The light receiving elements 164-1 and 164-2 are configured to receive light in different directions. In this embodiment, the two light receiving elements 164-1 and 164-2 are arranged side by side across a center line that divides the bracket cover 150 into two halves, front and rear, as shown in Fig. 6.

[0033] The light receiving element 164-1 located on the front side is rotated clockwise by a desired angle (for example, about 45 degrees). The light receiving element 164-2 located on the rear side is rotated counterclockwise by a desired angle (for example, about 135 degrees). By arranging them in this way, the light receiving element 164-1 can receive a signal from the front side of the electric roller blind 100, and the light receiving element 164-2 can receive a signal from the rear side.

[0034] The light receiving elements 164-1 and 164-2 are provided on a board 166 attached to the bracket cover 150. A light receiving element connector 168 connectable to the communication line connector 145 of the light receiving unit communication line 143 is provided on the board 166. Thus, the light receiving elements 164-1 and 164-2 and the control unit 146 are connected via the light receiving element connector 168. The light receiving elements 164-1 and 164-2 are arranged closer to the tip end of the light receiving unit 160 than the board 166 (towards the lower end in FIG. 6).

[0035] As shown in FIG. 6, a light-receiving cover 162 is disposed below the two light-receiving elements 164-1 and 164-2. The light-receiving cover 162 is configured to be able to transmit signals from the remote control R, and is fitted into the opening 150a of the bracket cover 150. When the bracket cover 150 is attached to the side bracket 130, the portion of the light-receiving unit 160 that is further distal than the substrate 166 is disposed below the side bracket 130. A gap SP is formed between the side bracket 130 and the bracket cover 150, more specifically, between the distal end (lower end in FIG. 6) of the side bracket 130 and the distal end (lower end in FIG. 6) of the bracket cover 150, and the light-receiving unit 160 is disposed in the gap SP. This allows the thickness of the bracket cover 150 to be reduced.

[0036] Next, the left side bracket 130 and bracket cover 170 will be described with reference to Fig. 7 when viewed from the front of the electric roller shade 100. Fig. 7 is a side view of the side of the electric roller shade 100 on which the light receiving unit 160 is not provided. As shown in Fig. 7(a), the side bracket 130 has the same configuration as the right side bracket 130, except that the motor communication line 142 and the light receiving unit communication line 143 are not routed.

[0037] (Bracket cover 170) The bracket cover 170 is a general bracket cover that is not provided with a light receiving unit 160. The structure for attaching and detaching the bracket cover 170 to the side bracket 130 is the same as the structure for attaching and detaching the bracket cover 150 to the side bracket 130. Therefore, the bracket cover 150 provided with the light receiving unit 160 and the general bracket cover 170 can be attached and detached to either the left or right side bracket 130. Furthermore, in the case of an electric roller blind 100 that is not operated with a remote control, the general bracket cover 170 can be attached to both the left and right side brackets 130.

[0038] The overall configuration of the electric roller blind 100 of this embodiment has been described above. The process of attaching and detaching the bracket cover 150 to and from the side bracket 130 will be described with reference to Figs. 8 and 9. Fig. 8 is a diagram showing the attached and detached state of the bracket cover 150. Fig. 9 is a diagram showing the arrangement of the side bracket 130 and the light receiving unit 160.

[0039] First, as shown in Fig. 8, the communication line connector 145 is connected to the light-receiving element connector 168. Next, the bracket cover 150 is placed below the side bracket 130 so that the light-receiving cover 162 is located at the bottom. Thereafter, the bracket cover 150 is attached to the side bracket 130 by lifting it along the surface of the side bracket 130 as shown by arrow a in Fig. 8. To remove the bracket cover 150 from the side bracket 130, follow the above procedure in reverse.

[0040] Next, the state of the light receiving elements 164-1 and 164-2 relative to the mounting direction of the electric roller shade 100 will be described with reference to Fig. 9. Fig. 9 is a diagram for explaining the state of the light receiving elements 164-1 and 164-2 relative to the mounting direction of the electric roller shade 100.

[0041] When the electric roller shade 100 is attached to the ceiling, the light receiving elements 164-1 and 164-2 are arranged downward, as shown in Fig. 9(a). By arranging the light receiving elements 164-1 and 164-2 in this manner, the light receiving element 164-1 can receive a signal from the front side of the electric roller shade 100, and the light receiving element 164-2 can receive a signal from the back side, as described above.

[0042] When the electric roller blind 100 is used facing forward, the light receiving elements 164-1 and 164-2 are arranged in the front, as shown in Fig. 9(b). When the light receiving elements 164-1 and 164-2 are arranged in this manner, the light receiving direction of the light receiving element 164-1 faces upward rather than horizontally, so the light receiving element 164-1 receives a signal from above. On the other hand, the light receiving direction of the light receiving element 164-2 faces downward rather than horizontally, so the light receiving element 164-2 can receive a signal from below.

[0043] (Effects of the first embodiment) As described above, according to this embodiment, the light receiving unit 160 is detachable from the side bracket 130, so that a light receiving structure can be easily maintained when necessary. Therefore, maintainability can be improved.

[0044] Furthermore, by orienting the light receiving directions (light receiving ranges) of the multiple light receiving elements 164-1, 164-2 in different directions, remote control operation can be performed without reducing light receiving sensitivity. This allows for a light receiving structure that is easy to maintain while maintaining light receiving sensitivity. This is particularly advantageous because remote control operation can be performed without reducing light receiving sensitivity whether the electric roller blind 100 is installed on the ceiling or in front of the screen.

[0045] Furthermore, the light receiving unit 160 can be attached and detached by switching the left and right side brackets 130. This allows for a flexible installation structure that is not limited by the installation location of the electric roller blind 100, while also providing a light receiving structure that is easy to maintain.

[0046] Furthermore, by providing the light receiving unit 160 to the bracket cover 150, it can be easily attached and detached to the side bracket 130, resulting in a light receiving structure that is easier to maintain. Furthermore, because the bracket cover 150 can be attached to the side bracket 130 in a direction perpendicular to the longitudinal direction of the take-up pipe 120, maintenance can be easily performed even if there is not enough space between the side of the bracket cover 150 and the wall surface, for example.

[0047] Furthermore, because a gap SP for accommodating the light receiving unit 160 is provided between the tip of the side bracket 130 and the tip of the bracket cover 150, the light receiving unit 160 can be accommodated without making the bracket cover 150 thicker. This allows the width of the outer portions of the take-up pipe 120 (portions where the side bracket 130 and bracket cover 150 are arranged) to be smaller than both ends of the take-up pipe 120, allowing the width of the screen 110 to be increased relative to the opening in which the electric roller blind 100 is installed.

[0048] Furthermore, the light receiving element 164-1 receives a signal from the front side of the screen 110, and the light receiving element 164-2 receives a signal from the back side of the screen 110. Therefore, when the electric roller blind 100 is used as a room partition, the electric roller blind 100 can be operated from both the front side and the back side of the screen 110.

[0049] (Second embodiment) Next, the configuration of an electric roller blind 200 according to a second embodiment will be described with reference to Fig. 10. Fig. 10 is a side cross-sectional view showing the electric roller blind 200 of this embodiment. This embodiment differs from the electric roller blind 100 of the first embodiment in that a light receiving unit 260 is provided on the side bracket 230 on the opposite side. This embodiment will be described mainly focusing on the differences from the first embodiment. Components having substantially the same functional configuration will be assigned the same reference numerals, and duplicate explanations will be omitted.

[0050] The screen 210, winding pipe 220, set frame 240, motor communication line 242, light receiving unit communication line 243, communication line connector 245, control unit 246, power cord 248, power supply connector 249, bracket covers 250, 270, and light receiving unit 260 of this embodiment can be configured substantially similarly to the screen 110, winding pipe 120, set frame 140, motor communication line 142, light receiving unit communication line 143, communication line connector 145, control unit 146, power cord 148, power supply connector 149, bracket covers 150, 170, and light receiving unit 160 of the first embodiment described above.

[0051] 10, in the electric roller shade 200 of this embodiment, a light receiving unit 260 is disposed on the side bracket 230 on the opposite side to that of the electric roller shade 100 of the first embodiment. The light receiving unit 260 and the bracket cover 250 to which it is attached can be configured similarly to the light receiving unit 160 and bracket cover 150 of the first embodiment. In other words, the light receiving unit 260 and bracket cover 250 can be attached to the side bracket 230 with the light receiving unit 160 and bracket cover 150 of the first embodiment reversed left and right.

[0052] As shown in Figure 10(b), the communication line 242 for the motor (not shown) and the communication line 243 for the light receiving unit are routed within the set frame 240 to the left in the figure, and are connected to the motor and the light receiving unit 260, similar to the electric roller blind 100 of the first embodiment described above.

[0053] The above has described the configuration of the electric roller shade 200. Next, the state of the light receiving elements 264-1, 264-2 relative to the installation direction of the electric roller shade 200 will be described with reference to Fig. 11. Fig. 11 is a diagram for explaining the state of the light receiving elements 264-1, 264-2 relative to the installation direction of the electric roller shade 200.

[0054] When the electric roller shade 200 is attached to the ceiling, the light receiving elements 264-1 and 264-2 are positioned downward, as shown in Fig. 11(a). As described above, in this embodiment, the light receiving unit 260 is reversed front to back from the light receiving unit 160 of the first embodiment. Therefore, the light receiving element 264-1 can receive a signal from the back side of the electric roller shade 200, and the light receiving element 264-2 can receive a signal from the front side.

[0055] When the electric roller blind 200 is used facing forward, the light receiving elements 264-1 and 264-2 are disposed in the front, as shown in Fig. 11(b). As described above, in this embodiment, the light receiving unit 260 is upside down compared to the light receiving unit 160 of the first embodiment. Therefore, the light receiving direction of the light receiving element 264-1 faces downward relative to the horizontal, so the light receiving element 264-1 can receive a signal from below. On the other hand, the light receiving direction of the light receiving element 264-2 faces upward relative to the horizontal, so the light receiving element 264-2 receives a signal from above.

[0056] (Effects of the second embodiment) As described above, according to this embodiment, as in the first embodiment, the light receiving unit 260 is detachable from the side bracket 230, allowing for a light receiving structure that can be easily maintained when necessary. This improves maintainability. Furthermore, if the reception sensitivity is insufficient due to a barrier around the light receiving unit 260, the motor communication line 242 and the light receiving unit communication line 243 can be routed to the right in the drawing, as in the first embodiment, and the light receiving unit 260 and bracket cover 250 can be attached to the right side bracket 230, resulting in a configuration similar to that of the first embodiment, and the light receiving unit 260, which was previously on the left side in the drawing, can be positioned on the right side. In addition, the same effects as those of the first embodiment can be obtained.

[0057] (Third embodiment) Next, the configuration of an electric roller blind 300 according to a third embodiment will be described with reference to Fig. 12. Fig. 12 is a schematic diagram showing the configuration of a first bracket cover 350, a second bracket cover 352, and a light receiving unit 360 of the electric roller blind 300 of this embodiment. This embodiment differs from the electric roller blind 100 of the first embodiment in that the bracket cover 150 is composed of a first bracket cover 350 and a second bracket cover 352. This embodiment will be described mainly focusing on the differences from the first embodiment. Components having substantially the same functional configuration will be assigned the same reference numerals, and redundant explanations will be omitted.

[0058] The light receiving unit 360 of this embodiment can be configured substantially similarly to the light receiving unit 160 of the first embodiment.

[0059] As shown in Figure 12, the electric roller blind 300 of this embodiment is configured so that a first bracket cover 350 and a second bracket cover 352, which is a separate member from the first bracket cover 350 and can transmit signals from a remote control, can be attached and detached in a direction perpendicular to the longitudinal direction of the electric roller blind 300, and the light receiving unit 360 is provided on the second bracket cover 352.

[0060] The first bracket cover 350 is configured in the same manner as the bracket cover 150 of the first embodiment described above, except that a locking piece 350a for locking the second bracket cover 352 is formed at the bottom.

[0061] As described above, the second bracket cover 352 is configured to allow signals from the remote control to pass through. The "permeable" configuration may mean that the tip of the second bracket cover 352 is configured similarly to the light-receiving cover 162 of the first embodiment, or that the entire second bracket cover 352 is made of the same material as the light-receiving cover 162, or it may have some other configuration. As shown in FIG. 12(b), the second bracket cover 352 is provided with a light-receiving unit 360. The second bracket cover 352 has locking pieces 352a that lock onto the locking pieces 350a and protrude outward from both sides.

[0062] The light receiving unit 360 is configured to include a light receiving cover 362, light receiving elements 364-1 and 364-2, a substrate 366, and a connector 368 for the light receiving elements, similar to the light receiving unit 160 of the first embodiment.

[0063] The process for attaching the first bracket cover 350 and the second bracket cover 352 to the side bracket will now be described. First, the first bracket cover 350 is attached to the side bracket, similar to the bracket cover 150 of the first embodiment. Then, the second bracket cover 352 is inserted between the first bracket cover 350 and the side bracket, starting from the locking piece 352a, and the locking piece 352a is locked to the locked piece 350a. In this way, the second bracket cover 352 is attached to the first bracket cover 350.

[0064] Alternatively, the first bracket cover 350 and the second bracket cover 352 may be attached in advance, and then attached to the side brackets in the same manner as the bracket cover 150 of the first embodiment.

[0065] (Effects of the third embodiment) As described above, according to this embodiment, the light receiving unit 360 is provided on the separable second bracket cover 352, which makes it easier to attach and detach from the side bracket, resulting in a light receiving structure with improved maintainability. Furthermore, because the first and second bracket covers 350, 352 can be attached to the side bracket in a direction perpendicular to the longitudinal direction of the winding pipe, maintenance can be easily performed even if, for example, there is not enough space between the electric roller blind and the wall surface.

[0066] 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.

[0067] For example, in the first embodiment described above, the light receiving unit 160 includes multiple light receiving elements 164-1 and 164-2, and the light receiving directions of the light receiving elements 164-1 and 164-2 are configured to be different from each other, but the present invention is not limited to this example. Any configuration can be used as long as it can improve maintainability. For example, the light receiving unit may include one light receiving element, and the light receiving direction of the light receiving element may be configured to be variable. The same applies to the second and third embodiments.

[0068] Furthermore, in the first embodiment, the light receiving unit 160 is detachable from either the left or right side bracket 130 that supports the take-up pipe 120, but the present invention is not limited to this example. Any configuration can be used as long as it can improve maintainability. For example, the light receiving unit may be detachable from only one of the left or right side brackets. The same applies to the second and third embodiments.

[0069] Furthermore, in the first embodiment described above, the light-receiving unit 160 is provided on the bracket cover 150, which is detachable in a direction perpendicular to the longitudinal direction of the take-up pipe 120, and the tip of the bracket cover 150 is configured as a light-receiving cover 162 that is transparent to signals from the remote control R, but the present invention is not limited to this example. Any configuration may be used as long as it can improve maintainability. For example, the bracket cover itself may be configured to be transparent to signals from the remote control R. The same applies to the second and third embodiments.

[0070] Furthermore, in the first embodiment described above, the first bracket cover 350 and the second bracket cover 352, which is a separate member from the first bracket cover 350 and allows signals from the remote control R to pass therethrough, are configured to be detachable from a direction perpendicular to the longitudinal direction of the take up pipe 120, but the present invention is not limited to this example. As long as maintainability can be improved, any configuration may be used, such as detachable from a surface direction of the first bracket cover 350, that is, from the axial direction of the longitudinal direction of the take up pipe 120. The same applies to the second and third embodiments.

[0071] Furthermore, in the first embodiment, a gap SP for accommodating the light receiving unit 160 is provided between the tip of the side bracket 130 and the tip of the bracket cover 150, but the present invention is not limited to this example. Any configuration can be used as long as it can improve maintainability. For example, the light receiving unit may be accommodated in the bracket cover. The same applies to the second and third embodiments. [Explanation of symbols]

[0072] 100, 200, 300 Electric Roller Blind 110, 210 screens 112, 212 weight bar 120, 220 Winding pipe 122 Motor 124, 224 bearings 126, 226 spindle 126a Insertion hole 130, 230 side bracket 132, 134, 232, 234 screws 130a, 230a top opening 130b, 230b bottom opening 140, 240 set frame 142, 242 Motor communication line 143, 243 Communication line for light receiving unit 144, 244 mounting bracket 145, 245 communication line connector 146, 246 control unit 148, 248 power cord 149, 249 Power connector 150, 170, 250, 270 bracket cover 150a opening 160, 260, 360 light receiving unit 162, 262, 362 Receiving cover 164-1, 164-2, 264-1, 264-2, 364-1, 364-2 Photodetector 166, 266, 366 boards 168, 268, 368 Photodetector connector 350 First bracket cover 350a Locked piece 352 Second bracket cover 352a Locking piece R Remote Control SP void

Claims

1. a light-receiving unit including a light-receiving element that receives a signal from a remote control; the light receiving unit is provided on one of a pair of side brackets supporting the take-up pipe, the light-receiving unit includes a plurality of the light-receiving elements, This remote control light receiving structure for an electric roller blind is characterized in that the plurality of light receiving elements are arranged side by side on either side of a center line that divides the side bracket into two, front and rear, when the electric roller blind is attached to the ceiling.

2. A light-receiving unit including a light-receiving element that receives a signal from a remote control, the light receiving unit is provided on one of a pair of side brackets supporting the take-up pipe, the light-receiving unit includes a plurality of the light-receiving elements, The remote control light receiving structure for an electric roller blind is characterized in that the light receiving unit is detachable from either the left or right side bracket.

3. The plurality of light receiving elements are configured to have different light receiving directions, a first light receiving element that faces the front side when the electric roller blind is attached to a ceiling and faces upward from the horizontal when the electric roller blind is attached to a front side; a second light receiving element that faces the rear side when the electric roller blind is attached to a ceiling and faces downward from the horizontal when the electric roller blind is attached to a front; 3. The remote control light receiving structure for an electric roller blind according to claim 1, further comprising:

4. A plurality of light receiving elements are provided to receive signals from a remote control, The plurality of light receiving elements are provided on one of a pair of side brackets that support the winding pipe, The plurality of light receiving elements are arranged side by side across a center line that divides the side bracket into two, front and rear, when the electric roller blind is attached to a ceiling, The plurality of light receiving elements are configured to have different light receiving directions, a first light receiving element that faces the front side and receives a signal when the electric roller blind is attached to a ceiling; a second light receiving element that faces the front side and receives a signal when the electric roller blind is attached to the front; A remote control light receiving structure for an electric roller blind, comprising at least:

5. the first light receiving element faces the front side when the electric roller blind is attached to a ceiling, and faces upward from the horizontal when the electric roller blind is attached to the front, The remote control light receiving structure for an electric roller blind as described in claim 4, characterized in that the second light receiving element faces the rear side when the electric roller blind is attached to a ceiling, and faces downward below horizontal when the electric roller blind is attached to a front.

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