Linear lamp assembly structure
By designing a linear lamp assembly structure containing conductive strips and magnetic suction strips, the problem of mismatch between dining chandeliers and integrated ceiling installations is solved, and the flexible installation and power supply of module lamps is realized, which improves the user experience and scope of application.
Patent Information
- Application Number
- CN202421656903.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The size of the existing dining chandeliers does not match the linear installation station of the integrated ceiling, which makes it impossible to install with the integrated ceiling, limiting the scope of use and user experience of linear lamps.
A linear lamp assembly structure is designed, including a keel assembly and a functional module. The functional module consists of a module lamp and a long-shaped bracket. The bottom of the bracket is equipped with an installation groove along its length direction. The installation groove is equipped with conductive strips and magnetic suction strips. The module lamp is installed and power supply through the magnetic suction strips and contact with conductive strips.
It realizes arbitrary arrangement and replacement of module lamps, meets the installation requirements of linear stations, increases the scope of application, improves the user experience, and ensures the reliability of power supply.
Smart Images

Figure CN222747198U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of integrated ceilings, in particular to a linear lamp assembly structure. Background Art
[0002] Existing dining pendant lamps form decorative and lighting functions by configuring different lamps, and the lamps that can be used include spotlights, floodlights, chandeliers, decorative lamps, etc. The integrated ceiling includes a keel assembly and a decorative large board buckled under the keel assembly. Since the dining pendant lamp has a large width and a small length, the size of the dining pendant lamp does not match the linear installation position reserved between adjacent decorative large boards, which makes it impossible for the dining pendant lamp to be installed in conjunction with the integrated ceiling, resulting in limitations in the use of linear lamps for the integrated ceiling, which cannot meet the user's needs and affect the user experience. Utility Model Content
[0003] In order to address the deficiencies in the prior art, the utility model provides a linear lamp assembly structure, in which mounting grooves are provided for modular lamps to be assembled in any arrangement. This ensures that the modular lamps can be arbitrarily arranged and replaced in the mounting grooves as needed and obtain corresponding functions, facilitating disassembly and replacement. It also ensures that the long strip-shaped bracket meets the linear workstation installation requirements on the linear integrated ceiling, making it convenient to use with the integrated ceiling, thereby increasing the scope of application and improving the user experience.
[0004] The utility model is realized in the following manner: a linear lamp assembly structure, including a keel assembly and a functional module arranged below the keel assembly, the functional module including a module lamp and a long strip-shaped bracket, the bottom surface of the bracket is provided with a mounting groove opened along the length direction thereof, the mounting groove is provided with a conductive strip and a magnetic strip arranged along the length direction thereof, the module lamp embedded in the mounting groove is attracted and positioned by the magnetic strip and electrically connected with the conductive strip. A mounting groove is provided for the module lamp to be assembled in any arrangement, the module lamp is attracted and fixed in the mounting groove by the magnetic strip, and obtains the power required for operation by contacting the conductive strip, the module lamp can be put into use immediately after being installed in place, which is convenient for plugging and disassembling, improving the flexibility of matching, ensuring that the module lamp can be arbitrarily arranged and replaced in the mounting groove as needed and obtain the corresponding function, convenient for disassembly and replacement, and also ensuring the reliability of power transmission by improving the reliability of fixing, and ensuring that the long strip-shaped bracket meets the linear station installation requirements on the line integrated ceiling, convenient for use with the integrated ceiling, increasing the scope of application, and improving the use experience. The conductive strip and the magnetic strip are arranged along the length direction of the installation slot, so that any section of the module lamp inserted into the installation slot can be attracted by the corresponding section of the magnetic strip and connected to the corresponding section of the conductive strip for conduction, ensuring the flexibility and diversity of the installation of the module lamp.
[0005] Preferably, the top surface of the module lamp is provided with a magnet corresponding to the magnetic strip, and the module lamp is inserted into the mounting slot from bottom to top and fixed by the magnet and the magnetic strip. The magnet can be attracted to the magnetic strip to ensure that the module lamp can be stuck in the mounting slot and effectively bear the weight of the module lamp, preventing the module lamp from being separated from the mounting slot.
[0006] Preferably, there are at least two magnetic strips, which are separately arranged on the top wall of the mounting slot, and the module lamp is provided with magnets corresponding to the magnetic strips one by one. The addition of magnetic strips can effectively improve the reliability of attraction and prevent the module lamp from falling off, and also ensure that the module lamp maintains a preset posture to prevent deflection and displacement.
[0007] Preferably, a limiting groove is provided in the installation groove, and a fastener is provided on the module lamp. When the module lamp is inserted into the installation groove and fixed by magnetic attraction, the fastener is fastened with the limiting groove and limits the module lamp from vertically detaching from the installation groove. The limiting groove is provided on the top wall or side wall of the installation groove. The fastener can be fastened with the limiting groove after the module lamp is inserted into the installation groove. The fastener overlaps the corresponding groove wall of the limiting groove through the downwardly exposed contact surface, and plays a vertical supporting role for the module lamp to prevent the module lamp from detaching from the installation groove. The limiting groove can be provided on the top wall of the installation groove, and the module lamp can be fastened and fixed by the fastener provided on the top surface thereof. It can also be provided on the side wall of the installation groove, and the functional module is fastened and fixed by the fastener provided on the side wall thereof.
[0008] Preferably, a conductive groove for embedding and hiding the conductive bar is provided on the groove wall of the installation groove, which not only protects the conductive bar, but also ensures that the conductive bar can be exposed through the conductive groove notch to facilitate contact with the contact point.
[0009] Preferably, a magnetic suction groove is provided on the groove wall of the installation groove for the magnetic suction strip to be embedded and hidden, which not only protects the magnetic suction strip, but also ensures that the magnetic suction strip is exposed through the notch of the magnetic suction groove, facilitates the magnet attraction, and improves the attraction reliability.
[0010] Preferably, the conductive strips and the magnetic strips are staggered with each other, which not only facilitates processing and assembly, but also ensures that the conductive strips and the magnetic strips do not interfere with each other, thereby ensuring reliability in use.
[0011] Preferably, there are two conductive bars and they are symmetrically arranged along the width direction of the installation slot, and the module lamp is provided with contacts corresponding to the conductive bars one by one, so that when the module lamp is installed in place, it obtains power from the conductive bars through the contacts and operates. The two conductive bars can respectively contact the corresponding contacts on the module lamp and form a current loop, so that the module lamp operates normally. The conductive bars are symmetrically arranged, and when AC power is used, the module lamp does not need to be installed in the installation slot in a specific direction, which is convenient for disassembly and maintenance.
[0012] Preferably, the conductive strip is arranged on the top wall of the installation slot, and the contact is arranged on the top wall of the module lamp in a protruding manner; or, the conductive strip is arranged on the side wall of the installation slot, and the contact is arranged on the top wall of the module lamp in a protruding manner. The arrangement position of the conductive strip can be set as required to ensure that the module lamp is turned on after being installed in place, thereby ensuring reliability in use.
[0013] Preferably, the width of the module lamp matches the width of the mounting slot, and the thickness of the module lamp matches the depth of the mounting slot, so that the bottom edge of the module lamp is flush with the edge of the mounting slot. The module lamp can be positioned by the wall of the mounting slot to prevent the module lamp from being separated from the conductive strip or the magnetic strip due to deflection in the mounting slot.
[0014] Preferably, the vertical projection of the functional module is a rectangle with a flat end surface, and the module lamps are arranged closely in a linear manner, so that the installation slots are filled and blocked by the module lamps. The adjacent module lamps are tightly fitted through the flat end surfaces, which not only plays a role in positioning the module lamps, but also ensures that the module lamps are closely arranged along the line, thereby improving the aesthetics.
[0015] Preferably, the modular lamp includes a mounting base and a lamp body disposed in the mounting base, and the lamp body is a spotlight, a floodlight, a decorative lamp or a chandelier. Various functions can be obtained by using a variety of lamps in combination to enhance the user experience.
[0016] Preferably, the keel assembly includes a triangular keel with a clamp facing downward, and a strip is provided on the top of the bracket. The bracket is suspended under the triangular keel by inserting the strip into the clamp. The bracket can be installed in matching with the keel assembly to ensure that the linear lamp can be used in conjunction with the integrated ceiling, thereby improving the scope of application and usage experience.
[0017] Preferably, decorative panels fixed to the keel assembly are provided on both sides of the bracket, the bottom surface of the bracket is lower than the bottom surface of the decorative panel, and the side edge of the bottom surface of the bracket extends outward to form a decorative portion that shields the side edge of the decorative panel. The edge of the decorative panel can be matched and connected with the edge of the bracket, which not only ensures the relative position between the decorative panel and the bracket is fixed by sharing the keel assembly, but also uses the decorative portion to shield the edge of the decorative panel, thereby improving the aesthetics.
[0018] The beneficial effects of the utility model are as follows: a mounting slot is provided for modular lamps to be assembled in any arrangement, the modular lamps are attracted and fixed in the mounting slots by the magnetic strips, and the power required for operation is obtained by contacting the conductive strips, the modular lamps can be put into use immediately after being installed, which is convenient for plugging and unplugging, improving the flexibility of matching, ensuring that the modular lamps can be arbitrarily arranged and replaced in the mounting slots as needed and obtain corresponding functions, and convenient for disassembly and replacement, and also ensuring the reliability of power transmission by improving the reliability of fixing, and ensuring that the long strip-shaped bracket meets the linear station installation requirements on the line integrated ceiling, which is convenient for use with the integrated ceiling, increasing the scope of application, and improving the use experience. The conductive strips and the magnetic strips are both arranged along the length direction of the mounting slots, so that the modular lamps inserted into any section of the mounting slots can be attracted and connected to the corresponding section of the magnetic strips and conduct electricity with the corresponding section of the conductive strips, ensuring the flexibility and diversity of the installation of the modular lamps. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a cross-sectional schematic diagram of the assembly structure of the linear lamp described in Example 1;
[0020] Figure 2 is a schematic cross-sectional structural diagram of the bracket described in Example 1;
[0021] Figure 3 It is a cross-sectional schematic diagram of the assembly structure of the linear lamp described in Example 2;
[0022] Figure 4 It is a cross-sectional schematic diagram of the assembly structure of the linear lamp described in Example 3;
[0023] In the figure: 1. bracket, 2. module lamp, 3. installation slot, 4. conductive strip, 5. magnetic strip, 6. magnet, 7. fastener, 8. limit slot, 9. conductive slot, 10. magnetic slot, 11. contact, 12. triangular keel, 13. decorative panel, 14. decorative part. DETAILED DESCRIPTION
[0024] The essential features of the present utility model are further described below in conjunction with the accompanying drawings and specific implementation methods.
[0025] Embodiment 1:
[0026] This embodiment provides a linear lamp assembly structure.
[0027] like Figure 1 and 2A linear lamp assembly structure shown is composed of a keel component and a functional module arranged below the keel component, wherein the functional module includes a module lamp 2 and a long strip-shaped bracket 1, wherein the bottom surface of the bracket 1 is provided with a mounting groove 3 opened along its length direction, wherein the mounting groove 3 is provided with a conductive strip 4 and a magnetic strip 5 arranged along its length direction, and the module lamp 2 embedded in the mounting groove 3 is attracted and positioned by the magnetic strip 5 and is electrically connected to the conductive strip 4 by contact. A mounting groove 3 is provided for the modular lamp 2 to be assembled in any arrangement. The modular lamp 2 is attracted and fixed in the mounting groove 3 by the magnetic strip 5, and obtains the power required for operation by contacting the conductive strip 4. The modular lamp 2 can be put into use immediately after being installed in place, which is convenient for plugging and unplugging, improving the flexibility of matching, ensuring that the modular lamp 2 can be arbitrarily arranged and replaced in the mounting groove 3 as needed and obtain the corresponding function, and is convenient for disassembly and replacement. It also ensures the reliability of power transmission by improving the reliability of fixing, and ensures that the long strip-shaped bracket 1 meets the linear station installation requirements on the line integrated ceiling, which is convenient for use with the integrated ceiling, increases the scope of application, and improves the use experience. The conductive strip 4 and the magnetic strip 5 are both arranged along the length direction of the mounting groove 3, so that the modular lamp 2 inserted into any section of the mounting groove 3 can be attracted and connected to the corresponding section of the magnetic strip 5 and conductively connected with the corresponding section of the conductive strip 4, ensuring the installation flexibility and diversity of the modular lamp 2.
[0028] In this embodiment, the installation groove 3 is provided with a conductive strip 4 and a magnetic strip 5 that are staggered with each other, which ensures that the module lamp 2 can be fixedly positioned by being attracted to the magnetic strip 5 after being installed in place, and also ensures that the module lamp 2 can obtain the power required for operation by being connected to the conductive strip 4 after being installed in place.
[0029] In this embodiment, the keel assembly includes a triangular keel 12 with a clamp facing downward, and a plug is provided on the top of the bracket 1. The bracket 1 is suspended below the triangular keel 12 through the plug inserted into the clamp. During installation, the keel assembly is installed below the ceiling so that the clamp of the triangular keel 12 is exposed downward, so that the decorative plate 13 and the bracket 1 can be plugged and fixed through their respective plug-in parts. After installation, the decorative plate 13 and the bracket 1 are arranged side by side at the same height, and a linear station for the installation of linear lamps is formed between adjacent decorative plates 13. The bracket 1 is inserted into the linear station from bottom to top and fixed to the triangular keel 12, so that the decorative plate 13 and the bracket 1 are tightly fitted and completely cover the keel assembly and the ceiling.
[0030] In this embodiment, the module lamp 2 includes a mounting base and a lamp body disposed in the mounting base, and the lamp body is a spotlight, a floodlight, a decorative lamp or a chandelier. The number and type of the module lamps 2 in the mounting slot 3 can be adjusted and replaced as needed, and should all be regarded as specific embodiments of the present utility model.
[0031] In this embodiment, the width of the module lamp 2 matches the width of the mounting groove 3, and the thickness of the module lamp 2 matches the depth of the mounting groove 3, so that the bottom edge of the module lamp 2 is flush with the edge of the notch of the mounting groove 3, the vertical projection of the functional module is a rectangle with a flat end surface, and the module lamps 2 are linearly and closely arranged in sequence, so that the mounting groove 3 is filled and blocked by the module lamps 2. The bottom surface of the bracket 1 is provided with a long strip of mounting groove 3, and the user selects the number and type of module lamps 2 according to needs and installs them in the mounting groove 3 along a linear square in any order. After installation, each module lamp 2 is closely arranged along the length direction of the mounting groove 3, and is positioned by the magnet 6 and the magnetic strip 5, ensuring that each module lamp 2 can be connected to the corresponding conductive strip 4 through the contact 11.
[0032] In this embodiment, the top surface of the module lamp 2 is provided with a magnet 6 corresponding to the magnetic strip 5, and the module lamp 2 is inserted into the mounting groove 3 from bottom to top and fixed by the magnet 6 and the magnetic strip 5. Specifically, there are two magnetic strips 5, which are separately arranged on the top wall of the mounting groove 3, and the module lamp 2 is provided with magnets 6 corresponding to the magnetic strips 5 one by one, which not only ensures that the attraction direction between the magnetic strip 5 and the magnet 6 is vertically arranged, effectively supports the weight of the module lamp 2, but also ensures that the module lamp 2 maintains a horizontal posture by increasing the number of attraction points, thereby ensuring that the contact 11 can stably contact and conduct with the corresponding conductive strip 4.
[0033] In this embodiment, both sides of the top wall of the installation slot 3 are provided with limiting slots 8, and both sides of the top wall of the module lamp 2 are provided with fasteners 7. When the module lamp 2 is inserted into the installation slot 3 and fixed by magnetic attraction, the fasteners 7 are fastened with the limiting slots 8 and limit the module lamp 2 from vertically leaving the installation slot 3. The limiting slot 8 is in a shape of a small mouth and a large cavity, and the slot is opened downward. The fastener 7 is inserted into the limiting slot 8 and overlapped above the side edge of the slot, ensuring that the module lamp 2 is firmly fastened with the limiting slot 8 through the fastener 7. When the fastener 7 is inserted into the limiting slot 8, the module lamp 2 is installed in place and electrically connected to the conductive strip 4 through the contact 11.
[0034] In this embodiment, the groove wall of the installation groove 3 is provided with a conductive groove 9 for embedding and hiding the conductive strip 4. The depth of the conductive groove 9 matches the thickness of the conductive strip 4, which ensures that the conductive strip 4 is completely hidden in the conductive groove 9 and that the conductive strip 4 is exposed through the notch of the conductive groove 9, so that the contact 11 is convenient for contact and electrical connection. The groove wall of the installation groove 3 is provided with a magnetic attraction groove 10 for embedding and hiding the magnetic attraction strip 5. The depth of the magnetic attraction groove 10 matches the thickness of the magnetic attraction strip 5, which ensures that the magnetic attraction strip 5 is completely hidden in the magnetic attraction groove 10 and that the magnetic attraction strip 5 is exposed through the notch of the magnetic attraction groove 10, so that the magnet 6 is convenient for attraction.
[0035] In this embodiment, the magnetic strip 5 is a sticker, which not only reduces the cost but also ensures the reliability of magnetic attraction.
[0036] In this embodiment, there are two conductive strips 4 and they are symmetrically arranged along the width direction of the installation slot 3. The module lamp 2 is provided with contacts 11 corresponding to the conductive strips 4 one by one, so that when the module lamp 2 is installed in place, it can obtain power from the conductive strips 4 through the contacts 11 and operate. The magnetic strips 5 and the conductive strips 4 are both symmetrically arranged on the top wall of the installation slot 3, so that the module lamp 2 does not need to consider the installation direction when installing, which effectively improves the convenience of assembly and improves the user experience. The two conductive strips 4 are respectively connected to the corresponding wires, so that the conductive strips 4 can be connected by bridging the module lamp 2.
[0037] In this embodiment, the conductive strip 4 is disposed on the side wall of the mounting groove 3, and the contact is convexly disposed on the top wall of the module lamp 2, so that the contact can fit tightly with the conductive strip 4, thereby ensuring power supply reliability.
[0038] In this embodiment, decorative panels 13 fixed to the keel assembly are provided on both sides of the bracket 1, the bottom surface of the bracket 1 is lower than the bottom surface of the decorative panel 13, and the side edges of the bottom surface of the bracket 1 extend outward to form a decorative portion 14 for shielding the side edges of the decorative panel 13. The mounting portion not only supports the edge of the decorative panel 13, but also shields the gap between the edge of the decorative panel 13 and the side wall of the bracket 1.
[0039] Embodiment 2:
[0040] Compared with the first embodiment, this embodiment provides another linear lamp assembly structure.
[0041] like Figure 3 As shown, the conductive strip 4 is arranged on the top wall of the mounting groove 3, and the contact 11 is convexly arranged on the top wall of the module lamp 2. When the module lamp 2 is inserted into the mounting groove 3 and is attracted and fixed, the contact 11 moves from bottom to top and contacts and electrically connects with the conductive strip 4.
[0042] In this embodiment, the magnetic strip 5 is one and is arranged in the middle of the top wall of the installation groove 3, so that the top surface of the module lamp 2 is fixed in the installation groove 3 through the central magnet 6 and the side fastener 7, ensuring that the contact 11 can fit tightly with the conductive strip 4.
[0043] It is understandable that the number of the magnetic strips 5 can be increased or decreased as needed to meet the requirements of adsorbing and fixing the module lamp 2, which should also be regarded as a specific embodiment of the present utility model.
[0044] The other structures and effects of the linear lamp described in this embodiment are consistent with those in the first embodiment and will not be described in detail.
[0045] Embodiment three:
[0046] Compared with the second embodiment, this embodiment provides another linear lamp assembly structure.
[0047] like Figure 4 As shown, both side walls of the installation slot 3 are provided with limiting slots 8, and both side walls of the module lamp 2 are provided with fasteners 7. When the module lamp 2 is inserted into the installation slot 3 and fixed by magnetic attraction, the fasteners 7 are fastened with the limiting slots 8 and limit the module lamp 2 from vertically leaving the installation slot 3. The notch of the limiting slot 8 is opened horizontally, and the bottom surface of the fastener 7 is arranged horizontally, so that it is convenient to overlap the bottom wall of the limiting slot 8 smoothly. The top surface of the fastener 7 is arranged obliquely, so that it is convenient to guide the fastener 7 to buckle into the limiting slot 8. When the fastener 7 is inserted into the limiting slot 8, the module lamp 2 is installed in place and is electrically connected to the conductive strip 4 through the contact 11.
[0048] In this embodiment, there are two magnetic strips 5 and they are disposed on both sides of the top wall of the installation slot 3. The module lamp 2 is fixed in the installation slot 3 by the top magnet 6 and the side fastener 7 to ensure that the contact 11 can fit tightly with the conductive strip 4.
[0049] The other structures and effects of the linear lamp described in this embodiment are consistent with those in the second embodiment and will not be described in detail.
Claims
1. A linear lamp assembly structure, comprising a keel assembly and a functional module arranged below the keel assembly, characterized in that: The functional module comprises a module lamp (2) and a long strip-shaped bracket (1); the bottom surface of the bracket (1) is provided with a mounting groove (3) opened along its length direction; the mounting groove (3) is provided with a conductive strip (4) and a magnetic strip (5) arranged along its length direction; the module lamp (2) embedded in the mounting groove (3) is attracted and positioned by the magnetic strip (5) and is electrically connected to the conductive strip (4) by contact.
2. A linear lamp assembly structure according to claim 1, characterized in that: The top surface of the module lamp (2) is provided with a magnet (6) corresponding to the magnetic attraction strip (5); the module lamp (2) is inserted into the installation slot (3) from bottom to top and is fixed by attraction with the magnetic attraction strip (5) through the magnet (6).
3. A linear lamp assembly structure according to claim 2, characterized in that: There are at least two magnetic attraction strips (5) which are separately disposed on the top wall of the installation groove (3); and the module lamp (2) is provided with magnets (6) corresponding to the magnetic attraction strips (5) one by one.
4. The linear lamp assembly structure according to claim 1, characterized in that: A limiting groove (8) is provided in the installation groove (3), and a fastener (7) is provided on the module lamp (2). When the module lamp (2) is inserted into the installation groove (3) and fixed by magnetic attraction, the fastener (7) and the limiting groove (8) are fastened and limit the module lamp (2) from vertically separating from the installation groove (3). The limiting groove (8) is provided on the top wall or the side wall of the installation groove (3).
5. The linear lamp assembly structure according to claim 1, characterized in that: A conductive groove (9) for embedding and hiding the conductive strip (4) is provided on the groove wall of the installation groove (3); or a magnetic groove (10) for embedding and hiding the magnetic strip (5) is provided on the groove wall of the installation groove (3); or the conductive strip (4) and the magnetic strip (5) are arranged in a staggered manner.
6. The linear lamp assembly structure according to claim 1, characterized in that: The conductive bars (4) are two and are symmetrically arranged along the width direction of the installation slot (3); the module lamp (2) is provided with contacts (11) corresponding to the conductive bars (4) one by one, so that when the module lamp (2) is installed in place, it obtains power from the conductive bars (4) through the contacts (11) and operates.
7. A linear lamp assembly structure according to claim 6, characterized in that: The conductive strip (4) is arranged on the top wall of the mounting groove (3), and the contact point (11) is arranged on the top wall of the module lamp (2) in a protruding manner; or, the conductive strip (4) is arranged on the side wall of the mounting groove (3), and the contact point is arranged on the top wall of the module lamp (2) in a protruding manner.
8. The linear lamp assembly structure according to claim 1, characterized in that: The width of the module lamp (2) matches the width of the installation groove (3), and the thickness of the module lamp (2) matches the depth of the installation groove (3), so that the bottom edge of the module lamp (2) is flush with the edge of the notch of the installation groove (3); or, the vertical projection of the functional module is a rectangle with a flat end surface, and the module lamps (2) are linearly and closely arranged in sequence, so that the installation groove (3) is filled and shielded by the module lamps (2).
9. The linear lamp assembly structure according to claim 1, characterized in that: The modular lamp (2) comprises a mounting seat and a lamp body arranged in the mounting seat, and the lamp body is a spotlight, a floodlight, a decorative lamp or a chandelier.
10. The linear lamp assembly structure according to claim 1, characterized in that: The keel assembly comprises a triangular keel (12) with a clamping opening facing downward, a plugging strip is provided on the top of the bracket (1), and the bracket (1) is suspended below the triangular keel (12) by inserting the plugging strip into the clamping opening; or, decorative panels (13) fixedly connected to the keel assembly are provided on both sides of the bracket (1), the bottom surface of the bracket (1) is lower than the bottom surface of the decorative panel (13), and the side edge of the bottom surface of the bracket (1) extends outward to form a decorative portion (14) that covers the side edge of the decorative panel (13).