Recessed light

Abstract

Recessed light, comprehensive: a housing (100) made of metal material, which has a high thermal conductivity coefficient and serves to dissipate heat; an intermediate layer (200) which is arranged on the inside of the housing (100) and is made of a flame-retardant insulating material; a lighting assembly (300) arranged in the intermediate layer (200); characterized in that the intermediate layer (200) is configured to accommodate the luminaire assembly (300) and to electrically insulate it; and that the intermediate layer (200) in the contact area is in close contact with the housing (100), so that a stable thermally conductive interface is formed, thereby effectively transferring the heat generated during operation to the housing (100) and enabling the housing (100) to dissipate the heat quickly along its wall surfaces in the circumferential direction and other areas.

Description

TECHNICAL AREA

[0001] The present utility model relates to the technical field of luminaires and specifically to a recessed luminaire. STATE OF THE ART

[0002] In European buildings, insulating materials such as glass wool, rock wool, polyurethane foam, or polystyrene boards are typically installed in or on the ceiling structure to save energy and improve thermal insulation. These materials are characterized by good thermal insulation, which effectively prevents heat loss and reduces the energy consumption of buildings. In practice, however, these insulating materials are often located in close proximity to lighting fixtures in the ceiling, which is particularly common with recessed luminaires such as downlights and spotlights in embedded applications.

[0003] Since these luminaires generate heat during operation, especially higher wattage models, insufficient or uneven heat dissipation can easily lead to the formation of localized high-temperature zones in the upper part of the luminaire housing (near the insulation). Therefore, operating these luminaires in an environment surrounded by insulation results in high internal temperatures, and in the event of abnormal operation, there is a risk of internal plastic materials burning due to overheating.

[0004] Using a solid metal material initially results in higher costs; moreover, the solid metal material conducts electricity, which poses a risk of electric shock if the operating personnel accidentally touch it.

[0005] When using a combination of outer plastic and inner metal (as in the existing aluminum encapsulation process), the plastic material is located on the outside of the light fixture. In the event of any malfunction, there is a risk that the entire light fixture could catch fire. Furthermore, because the plastic is on the outside, a fire can easily spread.

[0006] With a completely plastic construction, the risk of overheating and burning is higher when fully covered with insulating wool, making it unsuitable for working environments with insulating wool covering.

[0007] At the same time, hidden factors can easily create electrical safety hazards during the installation or long-term operation of existing luminaires. First, insulating components of luminaires can become damaged or inoperative due to aging, wear, UV radiation, overheating, and other factors. Second, the luminaire's wiring can be damaged by prolonged stretching, bending, or external forces, exposing the live wires and potentially causing unintentional contact between the live parts and the metal housing. In this case, the metal housing can become energized by the live wire, causing a current leak, which poses an additional risk of electric shock. The risk of such a current leak is particularly high in humid environments.If an electrical leak occurs and is not detected in time, it can lead to electrical fires, electric shocks to people, or even serious safety accidents. CONTENTS OF THE PRESENT USE SAMPLE

[0008] The present invention provides a built-in light to solve the problems mentioned in the prior art above.

[0009] To achieve the aforementioned purpose of the utility model, the present utility model uses the following technical solution: A recessed luminaire comprising a housing made of metal material having a high thermal conductivity coefficient and serving for heat dissipation; an intermediate layer arranged on the inside of the housing and made of a flame-retardant insulating material; a luminaire assembly arranged in the intermediate layer; wherein the intermediate layer is configured to accommodate the luminaire assembly and to electrically insulate it; and wherein the intermediate layer in the contact area is in close contact with the housing, so that a stable thermally conductive interface is formed, thereby effectively transferring the heat generated during operation to the housing and enabling the housing to quickly dissipate the heat along its wall surfaces in the circumferential direction and other areas.

[0010] The advantage of the utility model over the prior art is: The present invention provides that by arranging an intermediate layer between the housing and the luminaire assembly, and by forming a stable, thermally conductive interface in the contact area, the heat generated by the luminaire assembly during operation can be transferred more directly and sustainably to the housing. The housing is made of metal, has a high thermal conductivity and excellent heat dissipation properties, and can quickly dissipate heat from the local area to the circumference and other parts of the housing. This design effectively avoids the problem of conventional recessed luminaires, where heat can accumulate in the upper area of ​​the luminaire if it is covered by or located near insulation wool and the airflow above it is restricted.Therefore, the top of the light fixture no longer represents the sole or primary heat accumulation zone, significantly reducing the temperature rise at its top. This eliminates the risk of safety hazards such as aging, charring, or even fire of the insulation wool due to localized high-temperature areas and is particularly suitable for typical European ceiling applications where insulation wool is used. BRIEF DESCRIPTION OF THE DRAWING

[0011] The drawings submitted with this application, which form part of the application, serve to further clarify the utility model. The schematic embodiments of the utility model and their descriptions serve to explain the utility model and do not constitute an unreasonable restriction of the utility model. The drawings include: Fig. Figure 1 is a perspective view of the embodiment according to the utility model. Fig. Figure 2 shows a schematic structural view through the internal structure of the light source in the Fig. 1. Depiction of the embodiment shown. Fig. Figure 3 shows an exploded view of the light source in the Fig. 1. Depiction of the embodiment shown. Fig. Figure 4 shows a schematic structural view of the housing in the Fig. 1. Depiction of the embodiment shown. Fig. Figure 5 shows a schematic structural view of the handle in the Fig. 1. Depiction of the embodiment shown. Fig. Figure 6 shows a schematic structural view of the intermediate layer in the Fig. 1. Depiction of the embodiment shown. Fig. Figure 7 shows a schematic structural view of the printed circuit board in the Fig. 6 depicted embodiment. Fig. Figure 8 shows a schematic structural view of an internal structure of another embodiment of the utility model.

[0012] Reference numeral list: Housing (100); first step surface (110); second step surface (120); opening (130); intermediate layer (200); third step surface (210); fourth step surface (220); snap lock (230); limiting projection (240); locking groove (250); projection (260); luminaire assembly (300); circuit board (310); luminaire body (311); power supply (312); reflector (320); lamp cover (330); handle (400); connecting end (410); lens (420). DETAILED DESCRIPTION

[0013] The technical solutions of the embodiments of the utility model are clearly and completely illustrated with reference to the drawings of the embodiments described below. It is understood that the described embodiments represent only a portion of the embodiments of the utility model and not all of them. The following description of at least one exemplary embodiment is indeed explanatory and should in no way be understood as any limitation of the utility model or its application or use. Based on the embodiments of the utility model, all other embodiments that a person skilled in the art in this field could achieve without inventive activity fall within the scope of protection of the utility model.

[0014] Note that the terms used herein serve only to describe specific embodiments and are not intended to limit the exemplary embodiments according to this application. Unless expressly stated otherwise in the context, the singular also refers to the plural. Furthermore, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0015] Unless expressly stated otherwise, the relative arrangement of components and steps, numerical expressions, and values ​​set forth in these embodiments do not limit the scope of the utility model. It should also be clear that the dimensions of the various parts in the figures are not shown to scale for the sake of clarity. Techniques, methods, and equipment known to those skilled in the art in the relevant fields may not be discussed in detail but should be considered part of the patent specification where appropriate. In all examples shown and discussed herein, all specific values ​​should be interpreted as illustrative and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that similar reference symbols and letters in the following figures denote similar elements, so that once an element is defined in one figure, it need not be discussed further in the subsequent figures.

[0016] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. 7 This utility model provides a recessed luminaire comprising a housing 100 and an intermediate layer 200, wherein the housing 100 and the intermediate layer 200 are assembled by means of a disassembly structure.

[0017] The housing 100 is made of metal, preferably an aluminum alloy. In other embodiments, it can be made of other metal materials. The housing 100 can be formed by die casting, pressing, or stamping; the intermediate layer 200 is arranged on the inside of the housing 100. The intermediate layer 200 is preferably made of flame-retardant plastic, which can be formed, for example, by injection molding, and serves to form a receiving space and to electrically insulate the current-carrying parts of the luminaire.

[0018] It should be noted that the overall height of the light source in this embodiment must not exceed 50 mm.

[0019] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. 7 In other embodiments, both the external appearance of the housing 100 and the intermediate layer 200 are designed in a stepped manner. The housing 100 comprises a first stepped surface 110 and a second stepped surface 120, the intermediate layer 200 comprises a third stepped surface 210 and a fourth stepped surface 220, wherein the first stepped surface 110 and the third stepped surface 210 are arranged opposite each other and form a precisely fitting assembly area.

[0020] The disassembly structure comprises an opening 130 formed in the first step surface 110 and an elastic snap lock 230 fixedly attached to the third step surface 210. The snap lock 230 is preferably designed as a one-piece molded elastic plate structure or as a separate elastic element, the free end (upper end) of which is provided with a barbed structure.

[0021] During assembly, the housing 100 is placed over the outer surface of the intermediate layer 200 from top to bottom (or pressed onto the intermediate layer 200 from above). During the relative movement between the housing 100 and the intermediate layer 200, the barb of the snap fastener 230 initially comes into contact with the edge of the opening 130 and undergoes elastic deformation by compression under the influence of the insertion ramp. As soon as the barb is aligned with the opening 130, the snap fastener 230 expands due to its own restoring force, enters the opening 130, and penetrates it, so that the barb and the upper edge of the opening 130 snap together. This achieves rapid positioning and a locked connection between the housing 100 and the intermediate layer 200.The above structure avoids the need for additional screws, increases assembly efficiency, and ensures the locking position remains stable and does not easily come loose.

[0022] During disassembly, a tool (such as a thin rod, screwdriver, or special pry bar) can be applied to the outside of the housing 100 or to a designated access opening to exert an external force on the snap lock 230. This elastically deforms the snap lock 230 toward the far edge of the opening 130, so that the retaining detent surface of the barb no longer engages with the edge of the opening 130. The housing 100 can then be pulled out of the intermediate layer 200 in the opposite direction (from bottom to top), releasing the lock and allowing disassembly. To prevent accidental opening, a local cover or operating structure requiring a tool for access can also be fitted to the opening 130 to enhance application safety.

[0023] Furthermore, the barb of the 230 snap fastener has been redesigned with greater detail. In addition to the traditional barb structure, a double barb structure has been integrated, allowing for more precise positioning of the snap fastener during assembly and preventing misalignment or insufficient engagement during the locking process. To improve ease of disassembly, the snap fastener is designed with a special release mechanism that allows for easy release by hand or with tools, without requiring force.

[0024] After the installation of the housing 100 and the intermediate layer 200, the inner surface of the outer exposed area of ​​the base of the housing 100 forms a more stable contact with the intermediate layer 200. During installation, the intermediate layer 200 forms close contact with the inner surface of the outer exposed area of ​​the base of the housing 10. Simultaneously, pressure assembly ensures that the contact area achieves a contact rate of over 50%.

[0025] It should be noted that the disassembly structure can be arranged in two or more groups, preferably symmetrically to the centerline of the housing 100, to ensure a balanced locking force and reduce assembly misalignment. The circumferential angular spacing, the number, and the position of the two groups of the disassembly structure can be adapted depending on the size of the housing 100, the material elasticity, and the locking strength requirements. Furthermore, the shape of the opening 130 can be round, elongated, or rectangular, and the barb structure can be designed accordingly as a single or double barb to improve pull-out strength and assembly tolerance.

[0026] In a preferred embodiment of this utility model, the snap-fit ​​connection described above is used to mount and fix the housing 100 and the intermediate layer 200; in other embodiments, a magnetic fastening structure (for example, by attaching a magnet to the housing 100 or intermediate layer 200 and a suitable retaining part), a bolt structure, a rotary locking structure, or a screw connection can also be used between the housing 100 and the intermediate layer 200 to achieve a demountable connection.

[0027] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. 7. The present application also includes a lighting assembly 300. The lighting assembly 300 comprises a printed circuit board 310 fixedly mounted on the inner top wall of the intermediate layer 200, on the lower surface of which several light sources 311 and a power supply 312 (for example, a driver power supply or a power control / converter module) are arranged. The arrangement of the printed circuit board 310 on the inner top wall of the intermediate layer 200 is advantageous: On the one hand, it provides a stable mounting reference point for the light source 311 and improves the consistency of the assembly; on the other hand, the heat generated by the light source 311 can be more easily transferred upwards and circumferentially to the intermediate layer 200 and the housing structure, thereby reducing heat build-up, minimizing local temperature increases, and improving long-term reliability.

[0028] In other embodiments, a reflector 320 is attached to the lower surface of the circuit board 310. This reflector gradually widens from top to bottom (in the form of an expanded cup / funnel) to form a downward-emitting optical cavity. The expanded structure of the reflector 320 can direct and shape the light from the luminaire 311, distributing it more evenly over the target irradiation area and reducing stray light and glare. Simultaneously, the gradually widening shape of the reflector 320 increases the effective light-emitting area of ​​the lower opening, thus increasing luminous efficacy and visual comfort within the same height constraints.

[0029] Here, the light source 311 is preferably arranged within the optical cavity enclosed by the reflector 320. This places the light source 311 in a relatively controlled optical environment, facilitating a more stable light distribution and a consistent light spot. The power supply 312 can be placed in a non-light-emitting area of ​​the circuit board 310 (e.g., the lateral edge of the circuit board or a recess outside the reflector 320) to avoid obstructing the main light emission path and to reduce the occupancy of the interior space of the optical cavity, thus enabling a more compact arrangement with low profiles. Simultaneously, by placing the power supply 312 in the area away from the direct light emission zone, its influence on color consistency and the uniformity of the light spot can be reduced.This also helps to minimize the heat transfer from the power supply to the luminaire 311 during operation and to improve control over the luminous flux degradation of the overall luminaire.

[0030] The base of the reflector 320 is equipped with a lamp cover 330, which serves to close the bottom opening of the reflector 320 and form a light-emitting surface. Sealing the optical cavity with the lamp cover 330 effectively reduces the likelihood of foreign matter such as dust or insects entering the interior of the lamp cover. This prevents problems such as light output degradation, yellowing of light spots, or dark spots that arise from contamination of the cavity after prolonged use. At the same time, the lamp cover 330 also provides physical protection for the inner light source 311, thus improving the impact resistance and safety of the luminaire during transport, installation, and daily use. The lamp cover 330 can be made of highly transparent material and surface-treated as required (e.g., coated).(e.g., through mattifying to reduce glare, anti-reflective coating, etc.) to further improve glare control and the visual experience while ensuring light output.

[0031] With reference to the Fig. 2 In other embodiments, to ensure stable installation of the lamp cover 330 and to increase assembly reliability, a ring-shaped limiting projection 240 is arranged along the circumferential direction of the base of the inner wall of the intermediate layer 200. The lower surface at the edge of the lamp cover 330 is connected to the upper surface of the limiting projection 240, including, but not limited to, snap-lock connections, adhesive bonds, ultrasonic welding, and the like. The limiting projection 240 provides the lamp cover 330 with a clear bearing surface and a positional reference, allowing the lamp cover 330 to be automatically positioned during installation and receiving stable axial support to prevent installation misalignment, sagging, or loosening.At the same time, the ring-shaped boundary structure can distribute external forces evenly across the lamp cover 330, ensuring that the transparent plate maintains its position stably even under vibration, thermal expansion or contraction, or during long-term use. This reduces noise and the risk of detachment, and guarantees the relative position between the light-emitting surface and the reflector 320, further improving light distribution stability and product consistency.

[0032] Furthermore, the outer edge of the lamp cover 330 can form a clearance fit, press fit, or snap-fit ​​connection with the inner wall of the intermediate layer 200; alternatively, steps, grooves, or clamping rings can be provided for additional fastening at the edge zone of the lamp cover 330. The above structure can simultaneously ensure easy assembly of the lamp cover 330 and form a radial boundary for the lamp cover 330 to prevent its eccentricity relative to the intermediate layer 200, thereby reducing light spot shift and shadow differences; with the additional arrangement of sealing rings or spot adhesive fixation, the sealing and dust protection at the bottom of the lamp cover can also be improved, so that the optical cavity remains clean in the long term, which contributes to maintaining light output and appearance.It should be noted that the limiting projection 240 can be configured as a continuous annular collar, as several arcuate projections, or as several spaced-apart point-shaped ribs. Its height and width can be adjusted according to the thickness of the lamp cover 330, the assembly tolerances, and the sealing requirements, without compromising the stable support and precise positioning of the lamp cover 330.

[0033] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. Figure 7 further comprises this embodiment comprising two handles 400, which are arranged symmetrically to the two openings. A connecting end 410, which has an overall rectangular shape, is hinged to one end of each handle 400. A groove 250 is formed in the third step surface 210. The connecting end 410 can be passed through the opening 130 and inserted deep into the groove 250. A projection 260 is arranged on one side of the inner wall of the groove 250 to limit the position of the connecting end 410.

[0034] In other embodiments, two handles 400 can also be attached directly to the housing by rivets or similar methods, thereby reducing costs.

[0035] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. In this embodiment, 7 also includes two handles 400, which are arranged symmetrically to the two openings 130. Each handle 400 is pivotally connected at one end to a connecting end 410, the connecting end 410 having the overall shape of a rectangular frame. To facilitate easy disassembly and assembly, a locking groove 250 is formed in the third step surface 210. The connecting end 410 can be passed through the opening 130 and inserted into the locking groove 250. A projection 260 is arranged on the inner wall of the locking groove 250, which serves to limit the connecting end 410 and ensures stable positioning of the connecting end 410 within the locking groove 250.

[0036] This structural design allows the connecting end 410 to be smoothly inserted into the locking groove 250 during assembly and is secured against displacement or falling out during use by the limiting effect of the projection 260. The projection 260 effectively increases the stability of the connecting end 410 and enables the handle 400 to maintain a reliable connection under external force, thereby improving the operational safety and stability of the entire device.

[0037] With reference to the Fig.In other embodiments, a lens 420 is arranged below the circuit board 310, and a reflector 320 is provided at the position opposite the lens 420 to the circuit board 310. In practical use, the circuit board 310 controls the emission of light by the luminaire 311, which, after passing through the lens 420, enters the reflector 320 and thus achieves the illumination effect.

[0038] In summary, the above description shows that the present utility model achieves the following technical effects: The present invention provides that by arranging an intermediate layer 200 between the housing 100 and the luminaire assembly 300, and by forming a stable, thermally conductive interface in the contact area, the heat generated by the luminaire assembly 300 during operation can be transferred more directly and sustainably to the housing 100. The housing 100 is made of metal, has a high thermal conductivity and excellent heat dissipation properties, and can quickly dissipate heat from the local area to the circumference and to other parts of the housing 100. This design effectively avoids the problem of conventional recessed luminaires, where heat can accumulate in the upper area of ​​the luminaire if it is covered by or located near insulation wool and the airflow above it is restricted.Therefore, the top of the light fixture no longer represents the sole or primary heat accumulation zone, significantly reducing the temperature rise at its top. This eliminates the risk of safety hazards such as aging, charring, or even fire of the insulation wool due to localized high-temperature areas and is particularly suitable for typical European ceiling applications where insulation wool is used.

[0039] Secondly, the metal housing 100 offers advantages in heat dissipation, but its conductivity can also pose a risk of electrical leakage. To prevent such risks, this utility model uses a plastic intermediate layer 200 that insulates the luminaire assembly 300 from the metal housing, thus forming a stable insulating barrier. Even if the wiring is damaged, the insulation ages, or the cable material loosens during use of the luminaire, the intermediate layer 200 can still prevent direct contact between the live parts and the housing 100. This effectively reduces the possibility of electrical leakage, thereby decreasing the frequency of electric shocks and electrical accidents.

[0040] Furthermore, the combined design of the intermediate layer 200 and the metal housing 100 not only improves the heat dissipation and electrical safety performance of the luminaire, but also simplifies the overall structure. The intermediate layer 200 provides an effective insulating and heat-conducting layer, reducing reliance on traditional cooling components (such as cooling fins) and thereby decreasing the complexity of production and assembly. This simplified structure improves assembly efficiency, enabling more efficient production and installation of luminaires.

[0041] Finally, the use of the 200-layer interlayer increases the long-term reliability and stability of the lighting device. At high temperatures, the 100-layer metal housing and the 200-layer interlayer work together to effectively slow down the material's aging process. Even with prolonged use of the light source, the uniform heat distribution and electrical insulation remain stable, ensuring the product's reliability throughout its entire life cycle and preventing safety issues caused by overheating or electrical malfunctions.

[0042] In the description of the utility model, it is understood that the directional terms such as "front, back, top, bottom, left, right," "horizontal, vertical, perpendicular, horizontal," and "upper, lower," etc., are normally based on the directions or positional relationships shown in the figures, solely to facilitate and simplify the description of the utility model. Unless otherwise stated, these directional terms do not indicate or imply that the device or component in question must have a specific orientation or be designed and operated in a particular orientation. Therefore, they are not to be understood as limiting the scope of protection of the utility model; the directional terms "inside, outside" refer to the inside and outside of the outline of the respective component.

[0043] For better description, spatial relative expressions such as "on," "above," "on top of," and "above" can be used to describe the spatial relationship of a component or feature to other components or features, as shown in the figure. It is understood that the spatial relative expressions should also include other orientations of the components that differ from those shown in the figure, as may occur during use or handling. For example, if the component in the figure is reversed, then the component that was described as "above" or "on" another component or structure will now be positioned as "below" or "beneath" the other component or structure. Therefore, the exemplary expression "above" can include both "above" and "below."The component may also be oriented differently (rotated by 90 degrees or in other positions), and the spatial relative descriptions used here should be interpreted accordingly.

[0044] Furthermore, it should be noted that the use of terms such as "first" and "second" to describe components serves only for differentiation purposes. Unless otherwise specified, these words have no special meaning and must not be interpreted as limiting the scope of protection of this utility model.

[0045] The embodiments described above are merely preferred configurations of the utility model and are not intended to limit its scope. People skilled in the art can make various modifications and variations to the utility model. All modifications, equivalent replacements, or improvements made within the spirit and principles of the utility model should fall within its scope of protection.

Claims

[1] Recessed light, including: a housing (100) made of metal material, which has a high thermal conductivity coefficient and serves to dissipate heat; an intermediate layer (200) which is arranged on the inside of the housing (100) and is made of a flame-retardant insulating material; a lighting assembly (300) arranged in the intermediate layer (200); characterized by , that the intermediate layer (200) is configured to accommodate the lighting assembly (300) and to electrically insulate it; and that the intermediate layer (200) in the contact area is in close contact with the housing (100), so that a stable thermally conductive interface is formed, thereby effectively transferring the heat generated during operation to the housing (100) and enabling the housing (100) to dissipate the heat quickly along its wall surfaces in the circumferential direction and other areas. [2] Recessed light according to claim 1, characterized by , that the casing (100) is made of iron or aluminium alloy material. [3] Recessed light according to claim 1, characterized by , that the intermediate layer (200) is made of flame-retardant insulating material. [4] Recessed light according to claim 1, characterized by , that the lighting assembly (300) comprises a printed circuit board (310) and the shortest distance between the edge of the printed circuit board (310) and the edge of the intermediate layer (200) is in the range of 3 mm to 50 mm. [5] Recessed light according to claim 1, characterized by that the total height of the recessed light does not exceed 50 mm. [6] Recessed light according to claim 1, characterized by , that the contact area between the base of the intermediate layer (200) and the housing (100) is at least 50% of the base area of ​​the intermediate layer (200) to ensure effective heat conduction. [7] Recessed light according to claim 4, characterized by, that several light sources (311) and a power supply (312) are arranged on the lower surface of the circuit board (310). [8] Recessed light according to claim 7, characterized by , that a reflector (320) is arranged on the lower surface of the circuit board (310), wherein a lamp cover (330) is arranged at a position of the reflector (320) facing away from the circuit board (310), the lamp cover (330) being made of light-transmitting insulating material. [9] Recessed light according to claim 7, characterized by , that a lens (420) is provided below the circuit board (310), and a reflector (320) is arranged at a position of the lens (420) facing away from the circuit board (310). [10] Recessed light according to claim 8, characterized by, that the inner wall of the base of the intermediate layer (200) is provided with a circumferentially ring-shaped limiting projection (240), wherein the lower surface is connected to the upper surface of the limiting projection (240) at the edge of the lamp cover (330), and wherein the intermediate layer (200) is firmly provided with a diffuser plate. [11] Recessed light according to claim 8, characterized by , that the recessed light fixture has two handles (400), each handle (400) being connected to the housing (100) or the intermediate layer (200) via a hinge structure, the connecting end (410) of the handle (400) being passed through an opening (130) and being arranged on the intermediate layer (200) or on the housing (100). [12] Recessed light according to claim 8, characterized by , that the recessed light has two handles (400), each of which handles (400) can be directly and firmly connected to the housing (100).

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