CN209179687U - A window-fixed daylighting and sun-shading device - Google Patents

Abstract

The utility model discloses a window-fixed daylighting sunshade device, which comprises: at least two metal side plates installed on the building wall, the metal side plates are arranged at the window, and several metal side plates are arranged along the height direction Arranged and the length of the metal side plate is greater than the width of the window, the metal side plate is elongated and the cross-section of the metal side plate includes a high reflection side, a first diffuse reflection side and a second diffuse reflection side, wherein the high reflection side The shape is a parabola and is concave towards the inside of the metal side plate, the first diffuse reflection side and the second diffuse reflection side are arc sides; the high reflection side is located above the first diffuse reflection side and the second diffuse reflection side; The surface corresponding to the first diffuse reflection edge and the second diffuse reflection edge is a rough surface, and the surface corresponding to the high reflection edge is a smooth surface. The utility model can simultaneously have the function of daylighting and shading, and can improve the illuminance in the building room.

Description

A window-fixed daylighting and sun-shading device

technical field

The utility model relates to a daylighting and sun-shading device at a window of a building, in particular to a window-fixed daylighting and sun-shading device.

Background technique

Architectural windows are an important part of building interior lighting, and architectural windows are the main components that provide indoor natural lighting. In summer, due to the requirements of building energy consumption and comfort, it is often necessary to install sunshade devices at building windows to reduce solar radiation heat from entering the room. However, building windows have both lighting and shading needs.

In order to achieve the purpose of shading in existing buildings, the usual means are often to set venetian blinds or roller blinds at the indoor or outdoor windows to cover the outdoor sunlight and prevent the sun's rays from entering the room, but the venetian blinds or roller blinds Such sunshade devices cannot take into account the effect of daylighting, so even if the outdoor weather is sunny, the indoor lights still need to be turned on. Therefore, there is an urgent need in the market for a lighting and sun-shading device with both lighting and sun-shading functions arranged at the window, so as to create a better natural light environment in the building interior.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a window-fixed daylighting and sunshading device, which can have both lighting and sunshading functions, and improve the indoor illumination of the building.

The technical scheme provided by the utility model is as follows:

A window fixed daylighting sunshade device, comprising: at least two metal side panels installed on the building wall, the metal side panels are arranged at the window, a number of the metal side panels are arranged along the height direction and the metal side panels The length of the plate is greater than the width of the window, the metal side plate is in the shape of a strip and the cross-section of the metal side plate includes a high reflection side, a first diffuse reflection side and a second diffuse reflection side, wherein the shape of the high reflection side is a parabola and Concave toward the inside of the metal side plate, the first diffuse reflection side and the second diffuse reflection side are arc-shaped sides; the high reflection side is located above the first diffuse reflection side and the second diffuse reflection side; the first diffuse reflection The surface corresponding to the second diffuse reflection side is a rough surface, and the surface corresponding to the high reflection side is a smooth surface.

In the above structure, since the highly reflective side is a smooth surface and its shape is a parabola, when the sun’s rays irradiate on the surface corresponding to the highly reflective side, the sun’s rays will be reflected toward the top of the building interior, compared with a single beam of light directly shining into the building. Indoors, it can improve the overall illuminance of the room, improve the problem of uneven illuminance throughout the room, and have a certain lighting effect. In summer, most of the sun's rays are blocked by the metal side panels, and a small part of the sun's rays are reflected upwards by the surface corresponding to the highly reflective side into the top of the building or reflected to the rough surface of the adjacent metal side panel on the upper side, forming diffuse reflection , reduce the chance of glare, taking into account the role of shading and lighting. During the transitional season (spring and autumn), the sun’s rays are reflected upwards by the surface corresponding to the highly reflective side and enter the top of the building to increase the indoor illuminance in the form of indirect lighting. In winter, most of the sunlight is partially reflected by the surface corresponding to the highly reflective side and enters the top of the room, increasing the heat and illuminance in the room. To sum up, the structure installed at the window of the building can have the functions of daylighting and shading, so as to improve the overall illuminance of the building and reduce the chance of glare.

Preferably, the high reflection side includes a first high reflection side and a second high reflection side, the first high reflection side and the second high reflection side are parabolic in shape and both are concave toward the inside of the metal side plate; the The first high reflection side, the first diffuse reflection side, the second diffuse reflection side and the second high reflection side are connected end to end in sequence; the axis of the parabola where the first high reflection side is located is inclined towards a direction away from the building room, and the second The axis of the parabola where the highly reflective side is located is inclined towards the direction close to the interior of the building.

In the above-mentioned structure, the first highly reflective side and the second highly reflective side are respectively set into the above-mentioned shapes, and when the sun's altitude angle is small, such as below 35°, the sun's rays shine on the second highly reflective side to ensure that the sun's rays can It is better reflected to the top of the room to illuminate the room. Compared with the case where there is only one parabola on the high-reflection side, this structure can reflect more sunlight to the top of the room under different sun altitude angles, and it is more Improve the overall indoor illumination of the building, and further improve the effect of indoor lighting.

Preferably, the focus of the axis of the parabola where the first highly reflective side is located is located on the side of the connection point between the first diffuse reflection side and the second diffuse reflection side of the upper adjacent metal side plate, which is close to the building room; the first The focus of the axis of the parabola where the two highly reflective sides are located is the endpoint of the first highly reflective side adjacent to the metal side plate on the upper side away from the building room.

Preferably, the angle between the straight line formed by the end point of the first highly reflective side far away from the building room and the second diffuse reflection side of the lower adjacent metal side plate close to the building room and the horizontal plane is 28°-35° .

In the above structure, since the solar elevation angle in the main time period in winter is less than 40°, the sunlight in winter can be reflected to the top of the room through the surface corresponding to the first highly reflective side and the surface corresponding to the second highly reflective side, thereby improving the overall quality of the building interior. of illumination.

Preferably, when the metal side plate is arranged on the outside of the window, the second highly reflective side is located between the first highly reflective side and the building wall, and the end point of the first highly reflective side away from the building wall The height of is higher than the endpoint of the second most reflective side near the building wall.

In the above structure, since the metal side plate is arranged on the outside of the window, when it is raining, since the first highly reflective side and the second high reflective side are arranged obliquely, rainwater falling on the metal side plate can flow smoothly to the ground, avoiding rainwater Residing on the metal siding, thus affecting the reflection effect of the metal siding on the sun's rays.

Preferably, the center of the circle where the first diffuse reflection edge is located is above it, and the center of the circle where the second diffuse reflection edge is located is below it.

Preferably, the metal side plate is installed on the building wall through a mounting base, and the mounting base includes a connecting plate fixed on the building wall and several mounting plates arranged on the connecting plate, and the mounting plate One-to-one correspondence with the metal side plate; the metal side plate is provided with a first installation hole and a second installation hole, the position of the installation plate corresponding to the first installation hole is provided with a third installation hole, the installation The position of the board corresponding to the second mounting hole is provided with a fourth mounting hole; the first mounting hole is connected to the third mounting hole by bolts, and the second mounting hole is connected to the fourth mounting hole by bolts.

In the above structure, each metal side plate is fixed on the mounting plate through the opened first mounting hole and the second mounting hole, so as to fix the position of the metal side plate and the angle of the metal side plate relative to the horizontal plane.

Preferably, the window-fixed daylighting sunshade device further includes: a sunshade mechanism, the sunshade mechanism is arranged at the window and under all the metal side plates; the metal side plate and the sunshade mechanism jointly cover the window , several of the metal side panels cover the upper part of the window, and the sunshade mechanism covers the lower part of the window.

In the above structure, the sunshade mechanism arranged at the lower part of the window prevents outsiders from seeing the indoor situation and protects the privacy of indoor users. In summer, when the sun’s altitude angle is large, it can block the window from entering the room without being reflected by the metal side plate. external.

Preferably, several metal side plates are evenly arranged along the height direction.

Preferably, the metal side plate is provided with a hollow, and the hollow runs through the metal side plate along the extending direction of the metal side plate.

The weight of the metal side panel is reduced by setting the hollow, and the material for making the metal side panel is reduced.

The utility model provides a window-fixed daylighting sunshade device, which can bring the following beneficial effects:

The metal side plate of the utility model can reflect a part of the sun's rays into the top of the room, improve the overall illuminance of the room, and block most of the sun's rays in summer. This structure has the functions of daylighting and sunshade. The sun-shading mechanism arranged at the lower part of the window can protect the privacy of indoor personnel and block a part of sunlight from entering the room. At this time, the indoor lighting is realized by the metal side plate arranged at the upper part of the window.

Description of drawings

In the following, preferred embodiments will be described in a clear and understandable manner with reference to the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of the fixed-window daylighting and sunshading device will be further described.

Fig. 1 is the side view of the fixed window daylighting sunshade device of the present utility model installed at the window;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a structural schematic diagram of adjacent metal side plates;

Fig. 4 is a schematic diagram of light rays passing through the metal side plate at different incident height angles.

Explanation of reference numbers:

1-Building wall, 2-Glass window, 3-Installation seat, 4Metal side panel, 4a-First installation hole, 4b-Second installation hole, 4c-First high reflection side, 4d-Second high reflection side , 4e-first diffuse reflection edge, 4f-second diffuse reflection edge, 4g-hollowout, 5-venetian blind.

Detailed ways

In order to more clearly illustrate the embodiment of the utility model or the technical solutions in the prior art, the specific implementation of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model, and those skilled in the art can also obtain other accompanying drawings according to these drawings without creative work, and Get other implementations.

In order to make the drawings concise, the parts related to the utility model are only schematically shown in each drawing, and they do not represent the actual structure of the product.

[Example 1]

As shown in Figures 1 to 3, Embodiment 1 discloses a specific implementation of a window-fixed lighting and sunshade device, which specifically includes: five metal side panels 4 installed on the building wall 1, and the metal side panels 4 are set At the window, five metal side plates 4 are evenly arranged along the height direction and the length of the metal side plates 4 is greater than the width of the window, that is, the metal side plates 4 can cover the width of the window in the length direction. The metal side plate 4 can be installed on the outside of the window (ie the outside of the glass window 2 ) or on the inside of the window (ie the inside of the glass window 2 ).

Specifically, the metal side plate 4 is strip-shaped, and the cross-section of the metal side plate 4 includes a high reflection side, a first diffuse reflection side 4e and a second diffuse reflection side 4f, wherein the shape of the high reflection side is a parabola and faces the metal The inside of the side plate 4 is concave, and the first diffuse reflection edge 4e and the second diffuse reflection edge 4f are arc edges.

As shown in Figure 3, the high reflection side is located above the first diffuse reflection side 4e and the second diffuse reflection side 4f, and the surface corresponding to the first diffuse reflection side 4e and the second diffuse reflection side 4f is a rough surface, and the rough surface is The surface made of polished diffuse reflection metal material, the surface corresponding to the high reflection side is a smooth surface, and the smooth surface is a surface made of metal material with a smooth specular reflection coefficient exceeding 95%.

In other specific embodiments, the number of metal side panels 4 can be other numbers, at least 2. The number of metal side panels 4 to be used is determined according to actual needs such as partially or completely covering the window lighting surface, and will not be repeated here. .

More preferably, the metal side plate 4 is provided with a hollow 4g, and the hollow 4g penetrates the metal side plate 4 along the extending direction of the metal side plate 4, thereby reducing the weight of the metal side plate 4 and reducing the manufacturing cost of the metal side plate 4.

When the sun's rays shine on the surface corresponding to the high-reflection side, the sun's rays will be reflected to the top of the building by the surface corresponding to the high-reflection side, so that the sun's rays will hit the top of the room to improve the overall illuminance of the room, or be reflected to the upper side The rough surface of the adjacent metal side plate 4 diffusely reflects into the room. Compared with direct sunlight entering the room, it will only illuminate the bottom of the room, not the top of the room, and will also cause uneven indoor illumination. The structure directly reflects the sun's rays to the top of the room, which can brighten the whole room, reduce glare, and improve the visual comfort of indoor personnel. At the same time, because the metal side plate 4 can block part of the sunlight, it can play the role of sunshade. In summary, the structure of this embodiment can have both lighting and sunshade functions. Here, the indoor ceiling of the building is set in a light tone to facilitate the metal side panel 4 to play a lighting role, and the metal side panel 4 is suitable for being arranged at a window facing south.

[Example 2]

As shown in Figures 1 to 3, Embodiment 2 is based on Embodiment 1. The high reflection side of Embodiment 2 includes a first high reflection side 4c and a second high reflection side 4d, and the first high reflection side 4c and the second high reflection side The shapes of the two highly reflective sides 4 d are both parabolic and both are concave towards the inside of the metal side plate 4 . The first high reflection side 4c, the first diffuse reflection side 4e, the second diffuse reflection side 4f and the second high reflection side 4d are connected end to end in sequence. The axis of the parabola where the first highly reflective side 4c is located is inclined toward a direction away from the building interior, and the axis of the parabola where the second highly reflective side 4d is located is inclined toward a direction close to the building interior.

Specifically, the included angle between the axis of the parabola where the first highly reflective side 4c is located and the vertical direction is 10°, and the included angle between the axis of the parabola where the second highly reflective side 4d is located and the vertical direction is 58°. The connection between the first high reflection side 4c and the first diffuse reflection side 4e transitions smoothly, and the connection between the second high reflection side 4d and the second diffuse reflection side 4f smoothly transitions, so as to prevent the edge angle of the metal side plate 4 from being too sharp.

More preferably, the focus of the axis of the parabola where the first highly reflective side 4c is located is located on the side of the connection point between the first diffuse reflection side 4e and the second diffuse reflection side 4f of the upper adjacent metal side plate 4, which is close to the building room, And the height of the focal point in the vertical direction is the same as the height of the connection point between the first diffuse reflection side 4e and the second diffuse reflection side 4f in the vertical direction. The focus of the axis of the parabola where the second highly reflective side 4d is located is the endpoint of the first highly reflective side 4c of the metal side plate 4 adjacent to the upper side that is far away from the building interior. The angle between the straight line formed by the end point of the first highly reflective side 4c away from the building room and the second diffuse reflection side 4f of the lower adjacent metal side plate 4 close to the building room and the horizontal plane is 32°.

In other specific embodiments, the angle between the straight line formed by the end point of the first high reflection side 4c away from the building room and the second diffuse reflection side 4f of the lower adjacent metal side plate 4 close to the building room and the horizontal plane is also It can be 28°, 29°, etc., as long as it is between 28° and 35°, most of the sunlight can be reflected into the top of the room in winter to improve the indoor illumination.

More preferably, when the metal side plate 4 is arranged on the outside of the window, the second high reflection side 4d is located between the first high reflection side 4c and the building wall 1, and the first high reflection side 4c is far away from the building wall 1. The height of the end point is higher than the end point of the second highly reflective side 4d close to the building wall 1 . When running into rainy weather, the rainwater falling on the upper surface of the metal side plate 4 will flow to the ground along the upper surface of the metal side plate 4, so as to avoid accumulation of water on the metal side plate 4 and cause poor sunlight reflection effect.

When it is in summer, the incident altitude angle of the sun’s rays in the main period is greater than 60°. At this time, the incident altitude angle of the sun’s rays in the main period is relatively high, as shown in the 60°～85° of the sun’s ray route in Figure 4, By arranging the metal side plate 4, only a small amount of light enters the interior of the building, and part of the light enters the interior of the building in the form of diffuse reflection, which is helpful for indoor lighting and is not easy to generate glare. Since the metal side plate 4 itself can play a role of sunshade, most of the light will not enter the room, thus having the effect of both sunshade and daylighting.

When it is in the transitional season, that is, spring and autumn, the incident elevation angle of the sun’s rays in the main period is distributed between 40° and 60°, as shown in the 40° to 60° of the sun’s ray route in Figure 4, most of the incident rays can be compared It can be well reflected upwards into the room and hit the top of the building. The sunlight hitting the top of the room can provide a better indoor natural light environment and improve the indoor illuminance.

When it is in winter, the incident elevation angle of the sun's rays in the main time period is less than 40°, as shown in the 15°-40° solar ray route in Figure 4, and the sun's rays with an incident elevation angle greater than 30° can be better Reflected to the top of the room, but the incident light less than 30° will have a part of the light directly into the room. The smaller the incident height angle, the more the part that directly enters the room.

As shown in Figure 1, the angle between the straight line at the two ends of the first highly reflective side 4c and the horizontal plane is 16°, the angle between the straight line at the two ends of the second highly reflective side 4d and the horizontal plane is 5°, and the first high reflective side The horizontal length ratio between the side 4c and the second highly reflective side 4d is close to 4:5, the horizontal width of the first highly reflective side 4c is 127mm, and the horizontal width of the second highly reflective side 4d is 153mm , the height of the high reflection side formed by the first high reflection side 4c and the second high reflection side 4d in the vertical direction is 50 mm, and the metal side plate 4 is inclined toward the inside of the glass window 2 . The vertical distance between the lower endpoints of the corresponding high reflection sides of the adjacent metal side panels 4 up and down is 130mm, so that the endpoint of the first high reflection side 4c far away from the building room and the second side of the adjacent metal side panels 4 on the lower side The angle between the straight line formed by the end points of the diffuse reflection edge 4f close to the building room and the horizontal plane is 32°. Among them, ensure that the horizontal width of the surface corresponding to the high-reflection side is between 200-300 mm, and the distance between the upper end points of the high-reflection side of the adjacent metal side plate 4 in the vertical direction is between 100-150 mm. The side plates 4 as a whole can be scaled proportionally, but it is necessary to ensure that the distance between the metal side plates 4 is also scaled to ensure that the positional relationship between adjacent metal side plates 4 remains unchanged.

In other specific embodiments, if the angle between the straight line at the two ends of the highly reflective side and the horizontal plane is greater than 5°, it will have a better effect of water and drainage.

[Example 3]

As shown in Figures 1 to 3, Embodiment 3 is based on Embodiments 1 to 2. In Embodiment 3, the center of the circle where the first diffuse reflection edge 4e is located is above it, and the center of the circle where the second diffuse reflection edge 4f is located below it. Specifically, the radius of curvature of the first diffuse reflection edge 4e is 27cm, and the radius of curvature of the second diffuse reflection edge 4f is 360cm.

In other specific embodiments, the radius of curvature of the first diffuse reflection edge 4e is 20-30 cm, and the radius of curvature of the second diffuse reflection edge 4f is 300-400 cm, which will not be repeated here.

【Example 4】

As shown in Figures 1 to 3, Embodiment 4 is based on Embodiments 1 to 3. The metal side panel 4 of Embodiment 4 is installed on the building wall 1 through the mounting seat 3. The mounting seat 3 includes a The connecting plate on the wall body 1 and the 5 mounting plates arranged on the connecting plate, the mounting plates and the metal side plates 4 are provided in one-to-one correspondence. The connecting plate is a plate-shaped structure, and the connecting plate is directly installed on the building wall 1, and the mounting plate is fixed on the connecting plate by bolts.

A first installation hole 4a and a second installation hole 4b are provided on the metal side plate 4, a third installation hole is provided on the installation board corresponding to the first installation hole 4a, and a third installation hole is provided on the installation board corresponding to the second installation hole 4b. For the fourth installation hole, the first installation hole 4a is fixedly connected to the third installation hole by bolts, the second installation hole 4b is fixedly connected to the fourth installation hole by bolts, and the metal side plate 4 is fixed at an angle relative to the horizontal plane, and fixedly connected on On the building wall 1.

【Example 5】

As shown in Figures 1 to 3, Embodiment 5 is based on Embodiments 1 to 4. Embodiment 5 also includes: a sunshade mechanism, the sunshade mechanism is arranged at the window and is located under all the metal side panels 4, and the metal side panels 4 and the sunshade mechanism cover the window together, the five metal side panels 4 cover the upper part of the window, and the sunshade mechanism covers the lower part of the window. Of course, it is also possible to leave a certain gap between the metal side plate 4 and the sunshade mechanism, so that the sunlight directly enters the room from the gap, which can be specifically designed according to actual needs, and there is no limitation here.

When it is in summer, the sunlight that is not reflected by the metal side plate 4 and enters the room will be blocked by the sunshade device below the metal side plate 4 to prevent it from entering the room. In this embodiment, the sunshade device is a venetian blind 5, and The first aspect can play the role of sunshade, and the second aspect can prevent outdoor personnel from observing the indoor situation of the building outside the glass window 2, so as to protect privacy.

In other specific embodiments, the sunshade device may also be a curtain, which will not be repeated here.

The metal side panel 4 can play a good anti-glare performance, avoiding the sun's rays passing through the metal side panel 4 and directly entering the bottom of the room at noon, so this structure has both lighting and sunshade characteristics, and can be used in summer. In the case of curtains, the metal side panel 4 arranged on the upper part of the glass window 2 can still realize natural lighting, which is convenient for creating a good indoor light environment.

It should be noted that the above embodiments can be freely combined as required. The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (10)

1. A window fixed daylighting sunshade device, characterized in that it comprises: At least two metal side panels installed on the building wall, the metal side panels are arranged at the window, several of the metal side panels are arranged along the height direction and the length of the metal side panels is greater than the width of the window, the metal side panels The side plate is strip-shaped and the cross-section of the metal side plate includes a high reflection side, a first diffuse reflection side and a second diffuse reflection side, wherein the shape of the high reflection side is a parabola and is concave toward the inside of the metal side plate, and the first diffuse reflection The edge and the second diffuse reflection edge are arc edges; The high reflection side is located above the first diffuse reflection side and the second diffuse reflection side; Surfaces corresponding to the first diffuse reflection edge and the second diffuse reflection edge are rough surfaces, and surfaces corresponding to the high reflection edge are smooth surfaces. 2. The fixed window daylighting sunshade device according to claim 1, characterized in that: The highly reflective sides include a first highly reflective side and a second highly reflective side, the shapes of the first highly reflective side and the second highly reflective side are both parabolic and both are concave toward the inside of the metal side plate; The first highly reflective edge, the first diffuse reflective edge, the second diffuse reflective edge, and the second highly reflective edge are sequentially connected end to end; The axis of the parabola where the first highly reflective side is located is inclined towards a direction away from the building interior, and the axis of the parabola where the second highly reflective side is located is inclined towards a direction close to the building room. 3. The fixed window daylighting sunshade device according to claim 2, characterized in that: The focus of the axis of the parabola where the first highly reflective side is located is located on the side of the connection point between the first diffuse reflection side and the second diffuse reflection side of the upper adjacent metal side plate, which is close to the building room; The focus of the axis of the parabola where the second highly reflective side is located is the endpoint of the first highly reflective side adjacent to the upper side of the metal side plate away from the building interior. 4. The fixed window daylighting sunshade device according to claim 3, characterized in that: The angle between the straight line formed by the end point of the first highly reflective side far away from the building room and the end point of the second diffuse reflection side of the lower adjacent metal side plate close to the building room and the horizontal plane is 28°-35°. 5. The fixed window daylighting sunshade device according to claim 2, characterized in that: When the metal side plate is arranged on the outside of the window, the second highly reflective side is located between the first highly reflective side and the building wall, and the end point of the first highly reflective side away from the building wall has a height of At the end of the second most reflective side closest to the building wall. 6. The window-fixed daylighting and sun-shading device according to claim 1, characterized in that: The center of the circle where the first diffuse reflection edge is located is above it, and the circle center where the second diffuse reflection edge is located is below it. 7. The window-fixed daylighting and sunshade device according to claim 1, characterized in that: The metal side plate is installed on the building wall through the mounting base, and the mounting base includes a connecting plate fixed on the building wall and a number of mounting plates arranged on the connecting plate, and the mounting plate and the metal side Board one-to-one correspondence setting; The metal side plate is provided with a first mounting hole and a second mounting hole, a third mounting hole is provided at a position corresponding to the first mounting hole on the mounting plate, and a third mounting hole is provided at a position corresponding to the second mounting hole on the mounting plate. There is a fourth mounting hole at the position; The first installation hole is fixedly connected to the third installation hole by bolts, and the second installation hole is fixedly connected to the fourth installation hole by bolts. 8. The window-fixed daylighting and sunshade device according to any one of claims 1 to 7, further comprising: a sunshade mechanism, the sunshade mechanism is arranged at the window and is located below all the metal side panels; The metal side panels and the sunshade mechanism cover the window together, several metal side panels cover the upper part of the window, and the sunshade mechanism covers the lower part of the window. 9. The window-fixed daylighting and shading device according to claim 1, characterized in that: Several metal side plates are evenly arranged along the height direction. 10. The fixed-window daylighting and shading device according to claim 1, characterized in that: The metal side plate is provided with a hollow, and the hollow runs through the metal side plate along the extending direction of the metal side plate.