A method of using an adjustable photovoltaic daylighting roof system

Abstract

The application discloses a method for using an adjustable photovoltaic daylighting roof system, which comprises a support provided with a ventilation window, a daylighting component arranged on the support and forming a predetermined angle with a horizontal plane, a placing component arranged on the support and arranged at the end of the daylighting component along the inclined direction of the daylighting component and forming a predetermined angle with the horizontal plane, and a photovoltaic panel movably arranged on the support and used for shielding the daylighting component or placed on the placing component. The photovoltaic panel is movable, and in different seasons and weathers, the photovoltaic panel can shield the daylighting component or expose the daylighting component according to requirements. The placing component is arranged to temporarily store the photovoltaic panel and plays a role of bearing the photovoltaic panel. The ventilation window arranged on the support can realize ventilation requirements, and the adjustable photovoltaic daylighting roof system can meet the requirements of daylighting, sun-shading, photovoltaic power generation and natural ventilation in different seasons or scenes.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic equipment technology, and in particular to a method of using an adjustable photovoltaic skylight system. Background Technology

[0002] To meet the need for natural lighting, many buildings are equipped with skylights. However, in the summer (air conditioning season), sunlight shines through the skylights, and a large amount of heat enters the room, causing a significant increase in air conditioning energy consumption.

[0003] Therefore, the skylight of a building needs to take into account both the needs for lighting and energy conservation, while also meeting the building's ventilation requirements. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a method for using an adjustable photovoltaic skylight system that can save energy while meeting ventilation and lighting requirements.

[0005] A method of using an adjustable photovoltaic skylight system according to a first aspect embodiment of the present invention, the adjustable photovoltaic skylight system comprising a support member, a skylight member, a mounting member, and a photovoltaic panel, wherein the support member is provided with a ventilation window, the skylight member is disposed on the support member and forms a predetermined angle with the horizontal plane, the mounting member is disposed on the support member and is disposed at the end of the skylight member along the inclined direction of the skylight member and forms a predetermined angle with the horizontal plane, and the photovoltaic panel is movably disposed on the support member, the photovoltaic panel being used to shield the skylight member or placed on the mounting member, and the method of use includes the following methods depending on the season:

[0006] In summer, when the air conditioner is on indoors, the photovoltaic panel is fixed above the light-transmitting component by locking positioning pins. At this time, the photovoltaic panel and the light-transmitting component are set parallel to each other. The photovoltaic panel blocks the direct sunlight by shading the light-transmitting component. The supporting component is made of facade glass and is supported by a steel frame. At this time, the light is transmitted through the facade glass of the supporting component. At the same time, the ventilation window is closed to prevent the loss of air conditioning cooling.

[0007] During the spring and autumn transition season, in Scenario 1, to meet the lighting requirements, the photovoltaic panels are transferred to the mounting components and fixed, allowing for ample lighting through the facade glass of the lighting components and supporting components; at the same time, ventilation windows are opened to allow air from the top to be exhausted outdoors based on the chimney effect, promoting air convection inside the building; in Scenario 2, to meet the natural ventilation requirements, the photovoltaic panels are fixed above the lighting components, and two ventilation windows, one for air intake and one for air exhaust, are opened to accelerate the circulation of indoor and outdoor air and promote air convection inside the building.

[0008] In winter, the photovoltaic panels are moved to the mounting brackets and fixed, and the ventilation windows are closed. When the photovoltaic panels generate electricity and heat the air at the bottom, and the temperature of the air is higher than the indoor temperature, the ventilation windows at the back of the support brackets are opened to guide the hot air into the room. At the same time, the skylight glass allows for full light and heat absorption, creating a sunroom inside.

[0009] According to an embodiment of the present invention, an adjustable photovoltaic skylight system has at least the following beneficial effects: the photovoltaic panel is movable, and can be used to shade or expose the skylight as needed in different seasons and weather conditions; the mounting bracket is used to temporarily store the photovoltaic panel and provides support for it; the ventilation window is provided on the support bracket to meet ventilation requirements, thus satisfying the building's needs for lighting, shading, photovoltaic power generation, and natural ventilation in different seasons or scenarios. It is suitable for hot-summer-cold-winter regions, hot-summer-warm-winter regions, and temperate climate zones.

[0010] According to some embodiments of the present invention, the support member is provided with a slide rail, the slide rail is provided with a first slide groove, the first slide groove is provided with a first locking groove, the photovoltaic panel is provided with a roller, the first slide groove is used to support the roller to roll, the first locking groove is used to accommodate the roller, and the roller is provided to facilitate the photovoltaic panel to roll on the slide rail, making it more convenient to move the photovoltaic panel.

[0011] According to some embodiments of the present invention, the mounting member is provided with a second sliding groove, and a second locking groove is provided in the second sliding groove. The second sliding groove is used to support the rolling of the roller, and the second locking groove is used to accommodate the roller. The shape of the second sliding groove matches that of the first sliding groove, so that the photovoltaic panel can be received at the same angle.

[0012] According to some embodiments of the present invention, a hinge arm is hinged within the metal frame of the photovoltaic panel, the photovoltaic panel is detachably connected to the support member through the hinge arm, and the distance between the photovoltaic panel and the light-collecting member is adjusted through the hinge arm. The hinge arm makes it easy to assemble and disassemble the photovoltaic panel and facilitates adjustment of the distance between the photovoltaic panel and the light-collecting member.

[0013] According to some embodiments of the present invention, the metal frame of the photovoltaic panel is provided with a storage groove, and the hinge arm can be placed in the storage groove. The storage groove facilitates the removal of the photovoltaic panel and the retraction of the hinge arm therein, making it convenient for the photovoltaic panel to be placed on the mounting component.

[0014] According to some embodiments of the present invention, the support member is provided with a guide groove, the guide groove is S-shaped and narrows from the open end to the end. The guide groove is used to guide the insertion of the hinge arm. The S-shaped guide groove prevents the hinge arm from easily disengaging and improves the stability of the connection.

[0015] According to some embodiments of the present invention, the movable end of the hinge arm is connected to an anti-detachment cap via a connecting rod. The connecting rod is used to insert into the guide groove and slide along the guide groove. The anti-detachment cap is used to hook the support member. The connection structure of the hinge arm, the connecting rod and the anti-detachment cap is simple and easy to operate. Furthermore, the two anti-detachment caps can limit the swing of the photovoltaic panel.

[0016] According to some embodiments of the present invention, the mounting element includes heat-reflective glass for mounting the photovoltaic panel.

[0017] According to some embodiments of the present invention, the ventilation window includes an electrically operated ventilation window, which is used to control the ventilation volume.

[0018] According to some embodiments of the present invention, the light-transmitting element includes glass, tempered glass, or a light-transmitting plastic panel.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of the adjustable photovoltaic skylight system according to an embodiment of the present invention, showing the photovoltaic panels placed on the slide rail.

[0022] Figure 2 for Figure 1 A schematic diagram showing the structure of an adjustable photovoltaic skylight system with photovoltaic panels mounted on a mounting bracket.

[0023] Figure 3 This is a schematic diagram of the structure of the adjustable photovoltaic skylight system according to an embodiment of the present invention, showing the photovoltaic panel connected to the support member via a hinged arm.

[0024] Figure 4 for Figure 3 A schematic diagram showing the structure of an adjustable photovoltaic skylight system with photovoltaic panels mounted on a mounting bracket.

[0025] Figure 5 for Figure 3A schematic diagram showing the structure of the adjustable photovoltaic skylight system with the hinged arms retracted in the metal frame of the photovoltaic panel.

[0026] Figure 6 for Figure 3 A schematic diagram showing the connection between the hinged arm and the guide groove of the adjustable photovoltaic skylight system;

[0027] Figure 7 for Figure 3 A schematic diagram showing an adjustable photovoltaic skylight system installed on a roof.

[0028] Figure 8 for Figure 1 The diagram shows an adjustable photovoltaic skylight system installed on a roof.

[0029] Support component 100, ventilation window 110;

[0030] Slide rail 120, first slide groove 121, first locking groove 122, guide groove 130;

[0031] Light-transmitting component 200, mounting component 300, second sliding groove 310, second locking groove 320;

[0032] Photovoltaic panel 400, roller 410, hinge arm 420, storage slot 430, connecting rod 440, anti-slip cap 450. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0037] Reference Figures 1 to 8 An adjustable photovoltaic (PV) skylight system is disclosed, comprising a support 100, a skylight 200, a mounting component 300, and a photovoltaic panel 400. The support 100 is provided with a ventilation window 110. The skylight 200 is mounted on the support 100, forming a predetermined angle with the horizontal plane. The mounting component 300 is mounted on the support 100, positioned at its end along the inclined direction of the skylight 200, also forming a predetermined angle with the horizontal plane. The photovoltaic panel 400 is movably mounted on the support 100 and is used to shade the skylight 200 or placed on the mounting component 300. The usage method varies depending on the season and includes the following options:

[0038] In summer, when the indoor air conditioner is on, the photovoltaic panel 400 is fixed above the light-transmitting component 200 by locking positioning pins. At this time, the photovoltaic panel 400 and the light-transmitting component 200 are set parallel to each other. The photovoltaic panel 400 blocks the light-transmitting component 200, thus blocking direct sunlight. The support component 100 is made of facade glass and is supported by a steel frame. At this time, light is transmitted through the facade glass of the support component 100. At the same time, the ventilation window 110 is closed to prevent the loss of air conditioning cooling.

[0039] During the spring and autumn transition season, in Scenario 1, to meet the lighting requirements, the photovoltaic panel 400 is transferred to the mounting component 300 and fixed, allowing for ample lighting through the facade glass of the lighting component 200 and the support component 100; at the same time, the ventilation window 110 is opened, and according to the chimney effect, the air at the top is exhausted to the outside, promoting air convection inside the building; in Scenario 2, to meet the natural ventilation requirements, the photovoltaic panel 400 is fixed above the lighting component 200, and the two ventilation windows 110 for air intake and exhaust are opened, accelerating the circulation of indoor and outdoor air and promoting air convection inside the building.

[0040] In winter, the photovoltaic panel 400 is moved to the mounting component 300 and fixed. The ventilation window 110 is closed. When the photovoltaic panel 400 generates electricity and heats the hot air at the bottom, and its temperature is higher than the indoor temperature, the ventilation window 110 on the support component 100 is opened to guide the hot air into the room. At the same time, the skylight glass fully absorbs light and heat, forming a sunroom inside.

[0041] It is understandable that the so-called end is the rear end of the light-collecting component 200. The mounting component 300 is used to mount the photovoltaic panel 400, that is, to mount the photovoltaic panel 400 without obstructing the light-collecting component 200; it is also understandable that the support component 100 can be made of transparent glass.

[0042] In some embodiments, a slide rail 120 is provided on the support member 100, a first slide groove 121 is provided on the slide rail 120, a first locking groove 122 is provided in the first slide groove 121, and a roller 410 is provided on the photovoltaic panel 400. The first slide groove 121 is used to support the roller 410 to roll, and the first locking groove 122 is used to accommodate the roller 410. The roller 410 facilitates the rolling of the photovoltaic panel 400 on the slide rail 120, making it more convenient to move the photovoltaic panel 400. It can be understood that the slide rail 120 is arranged parallel to the light-collecting element 200, and there is a predetermined distance between the slide rail 120 and the light-collecting element 200.

[0043] In some embodiments, the mounting member 300 is provided with a second slide groove 310, and a second locking groove 320 is provided in the second slide groove 310. The second slide groove 310 is used to support the rolling of the roller 410, and the second locking groove 320 is used to accommodate the roller 410. The shape of the second slide groove 310 matches that of the first slide groove 121, so that the photovoltaic panel 400 can be received at the same angle.

[0044] It should be noted that the specific operation is as follows:

[0045] summer:

[0046] When the indoor air conditioner is on, the photovoltaic panel 400 is fixed above the light-transmitting component 200 by locking positioning pins. At this time, the photovoltaic panel 400 and the light-transmitting component 200 are set parallel to each other, and the photovoltaic panel 400 blocks the light-transmitting component 200, thus blocking direct sunlight. Because there is a large gap between the sliding rail 120 and the light-transmitting component 200, which is between 10-25cm, there is also a large gap between the photovoltaic panel 400 and the top light-transmitting component 200, which facilitates ventilation and heat dissipation of the photovoltaic panel 400. At this time, light can be transmitted through the facade glass of the support component 100. It can be understood that the support component 100 can be made of facade glass, supplemented by a steel frame for support, and the sliding rail 120 is set on the steel frame. At the same time, the electric ventilation window closes to prevent the loss of air conditioning cooling.

[0047] Spring and Autumn Transition Season:

[0048] In the first working condition, to meet the lighting requirements, the photovoltaic panel 400 can be slid onto the mounting component 300 via the slide rail 120 and fixed, allowing sufficient lighting through the facade glass of the lighting component 200 and the support component 100; at the same time, the electric ventilation window at the front end of the support component 100 can be opened to allow the air at the top to be exhausted outdoors according to the chimney effect, promoting air convection inside the building.

[0049] In the second scenario, to meet the natural ventilation requirements, the photovoltaic panel 400 is fixed above the light-transmitting component 200, and the electric ventilation window at the rear end of the support component 100 and the electric ventilation window at the front end of the support component 100 are opened to accelerate the circulation of indoor and outdoor air and promote air convection within the building.

[0050] winter:

[0051] The photovoltaic panel 400 can be slid onto the mounting component 300 via the slide rail 120 and fixed. When the electric ventilation window is closed, the photovoltaic panel 400 generates electricity and heats the air at the bottom. When the temperature of the air at the bottom is higher than the indoor temperature, the electric ventilation window at the rear end of the support component 100 is opened to guide the hot air into the room. At the same time, the skylight glass can fully absorb light and heat, forming a sunroom inside. Heating the bottom means that the photovoltaic panel 400 generates heat when it generates electricity, which heats the air between the photovoltaic panel and the skylight component 200. The hot air is drawn in through the electric ventilation window at the rear end of the support component 100, thereby warming the room.

[0052] An electrically operated ventilation window is essentially a combination of a fan and an electric door. The fan circulates the air, while the electric door opens and closes.

[0053] During construction, pre-drill holes and install bases for the photovoltaic (PV) skylight on flat or sloping roofs, and prepare drainage ditches and lightning protection strips. The PV skylight system can be fabricated as a whole in the factory and then installed on the roof. During installation, it is important to note that, regardless of whether the roof is flat or sloping, the angle between the PV panel and the ground plane (horizontal plane) after installation should be controlled to be consistent with or slightly lower than the local latitude to maximize PV power generation.

[0054] In some embodiments, a hinge arm 420 is hinged within the metal frame of the photovoltaic panel 400. The photovoltaic panel 400 is detachably connected to the support member 100 via the hinge arm 420. The distance between the photovoltaic panel 400 and the light-collecting member 200 can be adjusted via the hinge arm 420. The hinge arm 420 makes it easy to assemble and disassemble the photovoltaic panel 400 and to adjust the distance between it and the light-collecting member 200.

[0055] In some embodiments, the metal frame of the photovoltaic panel 400 is provided with a storage groove 430, and the hinge arm 420 can be placed in the storage groove 430. The storage groove 430 facilitates the removal of the photovoltaic panel 400 and the storage arm 420 can be stored in it, making it convenient for the photovoltaic panel 400 to be placed on the mounting member 300.

[0056] In some embodiments, the support member 100 is provided with a guide groove 130, which is S-shaped and narrows from the open end to the end. The guide groove 130 is used to guide the insertion of the hinge arm 420. The S-shaped guide groove 130 prevents the hinge arm 420 from easily disengaging and improves the stability of the connection.

[0057] In some embodiments, the movable end of the hinge arm 420 is connected to an anti-detachment cap 450 via a connecting rod 440. The connecting rod 440 is used to insert into the guide groove 130 and slide along the guide groove 130. The anti-detachment cap 450 is used to hook the support member 100. The connection structure of the hinge arm 420, the connecting rod 440 and the anti-detachment cap 450 is simple and easy to operate. Furthermore, the two anti-detachment caps 450 can limit the swing of the photovoltaic panel 400. It can be understood that because the photovoltaic panel 400 has a width in the left and right direction, the hinge arm 420 is also provided in the left and right direction. The hinge arms 420 arranged opposite each other in the left and right directions can limit the movement of the photovoltaic panel 400 in the left and right direction under the restriction of the anti-detachment caps 450.

[0058] It should be noted that the position of the photovoltaic panel 400 and the opening and closing of the ventilation window 110 are handled in the following ways to deal with different seasons.

[0059] summer:

[0060] When the indoor air conditioning is on, the photovoltaic panel 400 is fixed above the light-collecting component 200 via the hinged arm 420, blocking direct sunlight and generating electricity. There is a relatively large gap between the upper part of the light-collecting component 200 and the photovoltaic panel 400, ranging from 10 to 25 cm. This is because the hinged arm 420 supports the photovoltaic panel 400, facilitating ventilation and heat dissipation. The indoor lighting is mainly achieved through semi-transparent heat-reflective glass. At this time, the electrically operated ventilation window is closed to prevent loss of cool air from the air conditioning.

[0061] During the spring and autumn transition season (or when air conditioning is not used in summer):

[0062] The photovoltaic panel 400 is still fixed above the skylight 200 via the hinged arm 420, and the electric ventilation window can be controlled to open. Based on the chimney effect, it can exhaust hot air from the upper part of the building to the outside, promote air convection inside the building, and facilitate ventilation. The interior is mainly lit by semi-transparent heat-reflective glass.

[0063] winter:

[0064] The photovoltaic panel 400 releases the hinge arm 420 lock and fixes it on the semi-transparent heat-reflective glass, making close contact with the semi-transparent heat-reflective glass. Some of the heat generated when the photovoltaic panel 400 generates electricity can be transferred to the room through direct conduction. At this time, the electric ventilation window is closed to prevent heat loss from the room. The room is mainly lit by the upper part of the light-transmitting component 200.

[0065] It is understandable that the photovoltaic panel 400 and the hinge arm 420 are damped hinges, and the positions of the hinge arm 420 and the photovoltaic panel 400 can also be fixed by bolts.

[0066] In some embodiments, the mounting element 300 includes heat-reflective glass for mounting the photovoltaic panel 400.

[0067] In some embodiments, the ventilation window 110 includes an electrically operated ventilation window, which is used to control the ventilation volume.

[0068] In some embodiments, the light-transmitting element 200 includes glass, tempered glass, or a light-transmitting plastic panel.

[0069] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method of using an adjustable photovoltaic daylighting system, characterized in that, The adjustable photovoltaic skylight system includes a support (100), a skylight (200), a mounting component (300), and a photovoltaic panel (400). The support (100) is provided with a ventilation window (110). The skylight (200) is mounted on the support (100) and forms a predetermined angle with the horizontal plane. The mounting component (300) is mounted on the support (100) and is located at the end of the skylight (200) along the inclined direction of the skylight (200). The mounting component (300) forms a predetermined angle with the horizontal plane. The photovoltaic panel (400) is movably mounted on the support (100) and is used to shield the skylight (200) or placed on the mounting component (300). The usage method includes the following methods depending on the season: In summer, when the indoor air conditioner is on, the photovoltaic panel (400) is fixed above the light-transmitting component (200) by locking positioning pins. At this time, the photovoltaic panel (400) and the light-transmitting component (200) are set parallel to each other. The photovoltaic panel (400) blocks the light-transmitting component (200), thus blocking direct sunlight. The support component (100) is made of facade glass and is supported by a steel frame. At this time, light is transmitted through the facade glass of the support component (100). At the same time, the ventilation window (110) is closed to prevent the loss of air conditioning cooling. During the spring and autumn transition season, in condition one, to meet the lighting requirements, the photovoltaic panel (400) is transferred to the mounting component (300) and fixed, and sufficient lighting is achieved through the facade glass of the lighting component (200) and the support component (100); at the same time, the ventilation window (110) is opened, and according to the chimney effect, the air at the top is exhausted to the outside, promoting air convection in the building; in condition two, to meet the natural ventilation requirements, the photovoltaic panel (400) is fixed above the lighting component (200), and the two ventilation windows (110) for air intake and air exhaust are opened, so that the indoor and outdoor air can circulate faster, promoting air convection in the building; In winter, the photovoltaic panel (400) is transferred to the mounting component 300 and fixed. The ventilation window (110) is closed. When the photovoltaic panel (400) generates electricity and heats the hot air at the bottom, and its temperature is higher than the indoor temperature, the ventilation window (110) of the support component (100) is opened to guide the hot air into the room. At the same time, the skylight glass fully receives light and heat, forming a sunroom in the room.

2. The method of using an adjustable photovoltaic daylighting system according to claim 1, characterized in that: The support member (100) is provided with a slide rail (120), the slide rail (120) is provided with a first slide groove (121), the first slide groove (121) is provided with a first locking groove (122), the photovoltaic panel (400) is provided with a roller (410), the first slide groove (121) is used to support the roller (410) to roll, and the first locking groove (122) is used to accommodate the roller (410).

3. The method of using an adjustable photovoltaic skylight system according to claim 2, characterized in that: The mounting component (300) is provided with a second sliding groove (310), and a second locking groove (320) is provided in the second sliding groove (310). The second sliding groove (310) is used to support the rolling of the roller (410), and the second locking groove (320) is used to accommodate the roller (410).

4. The method of using an adjustable photovoltaic skylight system according to claim 1, characterized in that: A hinge arm (420) is hinged inside the metal frame of the photovoltaic panel (400). The photovoltaic panel (400) is detachably connected to the support member (100) through the hinge arm (420). The photovoltaic panel (400) can adjust its distance from the light-collecting member (200) through the hinge arm (420).

5. The method of using an adjustable photovoltaic skylight system according to claim 4, characterized in that: The metal frame of the photovoltaic panel (400) is provided with a storage groove (430), and the hinge arm (420) can be placed in the storage groove (430).

6. The method of using an adjustable photovoltaic skylight system according to claim 4, characterized in that: The support member (100) is provided with a guide groove (130), which is S-shaped and narrows from the open end to the end. The guide groove (130) is used to guide the insertion of the hinge arm (420).

7. The method of using an adjustable photovoltaic skylight system according to claim 6, characterized in that: The movable end of the hinge arm (420) is connected to an anti-detachment cap (450) via a connecting rod (440). The connecting rod (440) is used to insert into the guide groove (130) and slide along the guide groove (130). The anti-detachment cap (450) is used to hook the support member (100).

8. The method of using an adjustable photovoltaic skylight system according to claim 7, characterized in that: The mounting component (300) includes heat-reflective glass for mounting the photovoltaic panel (400).

9. A method of using an adjustable photovoltaic skylight system according to any one of claims 1 to 8, characterized in that: The ventilation window (110) includes an electric ventilation window, which is used to control the ventilation volume.

10. The method of using an adjustable photovoltaic skylight system according to claim 9, characterized in that: The light-transmitting element (200) includes glass, tempered glass, or a light-transmitting plastic panel.

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