An embedded light fixture

Abstract

The utility model discloses an embedded lamp, including plastic lamp shell and light source subassembly, plastic lamp shell has the inner chamber of lower part opening, the characteristic is that the metal lamp cup is closely arranged in the inner chamber, the metal lamp cup has the chamber of lower part opening, and the light source subassembly is installed in the chamber. Advantage is simple structure, both guarantee the quality of product, and also achieved the cost reduction.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to an embedded lamp. Background Technology

[0002] The heat dissipation of recessed lighting fixtures primarily relies on the external housing. Currently, most recessed lighting fixtures on the market use either plastic or metal housings. Plastic housings generally have slightly inferior heat dissipation compared to metal housings. Due to this issue of heat dissipation, the specific power design of the lamp body is carefully considered to ensure the overall lifespan of the light. For example, high-power recessed lighting fixtures often use metal housings, while low-power recessed lighting fixtures often use plastic housings. However, plastic housings, due to their inferior heat dissipation performance compared to metal housings, significantly limit the power design of the lighting fixtures and result in poor versatility. Metal housings, on the other hand, are relatively more expensive. In other words, maintaining product quality inevitably increases costs for existing recessed lighting fixtures. Therefore, how to reduce costs while ensuring product quality has become a pressing issue. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an embedded lamp with a simple structure that can both ensure product quality and reduce costs.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] An embedded lamp includes a plastic lamp housing and a light source assembly. The plastic lamp housing has an inner cavity with a lower opening. A metal lamp reflector is disposed in close contact with the inner cavity. The metal lamp reflector has a chamber with a lower opening. The light source assembly is installed in the chamber.

[0006] The top outer wall surface of the metal lamp cup is in close contact with the top inner wall surface of the plastic lamp housing, and the side outer wall surface of the metal lamp cup is in close contact with the side inner wall surface of the plastic lamp housing. The light source assembly includes a substrate, which is in close contact with the top inner wall surface of the metal lamp cup.

[0007] The plastic lamp housing is made of thermally conductive plastic.

[0008] The plastic lamp housing and the metal lamp cup are integrally injection molded.

[0009] The metal lamp cup has an injection overflow hole or groove on its top outer wall surface.

[0010] The inner wall of the injection overflow hole or groove is an inclined surface with a slope.

[0011] The metal lamp cup is made of aluminum.

[0012] The inner cavity includes an upper inner cavity and a lower inner cavity arranged sequentially from top to bottom, and the metal lamp cup is tightly disposed in the upper inner cavity.

[0013] The lower inner cavity is provided with a pre-drilled slot for mounting a reflector.

[0014] The lower inner cavity is provided with a pre-installed fastener for installing the diffuser plate.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] (1) The heat dissipation of the whole lamp is jointly undertaken by the metal lamp cup and the plastic lamp shell. The heat generated by the light source component during operation is first directly received and absorbed by the metal lamp cup, and then conducted to the plastic lamp shell, which makes up for the deficiency of insufficient heat dissipation of the single plastic lamp shell, so that the lamp can be adapted to higher power light sources and breaks through the power limitation of traditional plastic lamp shell lamps.

[0017] (2) Only the key heat dissipation areas use metal materials, which greatly reduces the amount of metal used. Compared with using an all-metal lamp housing, the manufacturing cost is significantly reduced. In addition, the plastic lamp housing also retains the characteristics of lightweight, insulation and easy processing.

[0018] (3) The structure is simple and reliable, and easy to manufacture;

[0019] (4) The efficient heat dissipation design is achieved through the metal lamp cup and plastic lamp shell, which can effectively delay the light decay of the light source, ensure the service life of the lamp under high power conditions, and improve the quality of the product. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the lamp housing in this utility model;

[0021] Figure 2 for Figure 1 A cross-sectional view of the structure with the metal lamp holder removed.

[0022] Figure 3 This is a three-dimensional structural diagram of the metal lamp cup in this utility model;

[0023] Figure 4 This is a partially enlarged cross-sectional view of the lamp housing in this utility model;

[0024] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 6 for Figure 5 A cross-sectional view of the structure after the lens has been removed and the diffuser plate has been installed. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] As shown in the figure, an embedded lamp includes a plastic lamp housing 1 and a light source assembly 2. The plastic lamp housing 1 has an inner cavity 10 with a lower opening. A metal lamp cup 3 is tightly disposed in the inner cavity 10. The metal lamp cup 3 has a chamber 30 with a lower opening. The light source assembly 2 is installed in the chamber 30.

[0028] In this specific embodiment, the top outer wall surface of the metal lamp cup 3 is tightly attached to the top inner wall surface of the plastic lamp housing 1, and the side outer wall surface of the metal lamp cup 3 is tightly attached to the side inner wall surface of the plastic lamp housing 1. The light source assembly 2 includes a substrate 20, which is tightly attached to the top inner wall surface of the metal lamp cup 3. This effectively enhances heat dissipation efficiency. The metal lamp cup 3, the plastic lamp housing 1, and the light source substrate 20 are in close contact, forming an efficient heat conduction path to ensure rapid heat dissipation and avoid local overheating. The tight fit of the three components reduces the risk of vibration or loose assembly, improving the overall reliability of the lamp.

[0029] In this specific embodiment, the plastic lamp housing 1 is made of thermally conductive plastic. Compared to ordinary plastic, thermally conductive plastic can further improve the heat dissipation capacity of the lamp housing and reduce the heat dissipation burden on the metal lamp cup 3.

[0030] In this specific embodiment, the plastic lamp housing 1 and the metal lamp cup 3 are integrally injection molded. This eliminates the need for additional fixing structures (such as screws and clips), reducing assembly costs; it also improves the bonding strength, as the plastic tightly wraps around the metal lamp cup 3 after cooling, preventing loosening or detachment and enhancing durability.

[0031] In this specific embodiment, an injection overflow hole or groove 31 is provided on the top outer wall surface of the metal lamp cup 3. The overflow hole / groove 31 allows the plastic melt to flow fully, avoids air bubbles or uneven filling, and ensures a tight and seamless bond between the metal and the plastic.

[0032] In this specific embodiment, the inner wall of the injection overflow hole or groove 31 is a sloped surface. During injection molding, the molten plastic fills the space of the overflow hole or groove 31 with a sloped inner wall. After injection molding, the plastic part forms multiple tensions on the top surface of the metal lamp cup 3. After cooling, the top of the metal lamp cup 3 is always in close contact with the top inner wall of the plastic shell 1. The top of the metal lamp cup 3 will not be out of contact with the top inner wall of the plastic shell 1 due to the different cooling and shrinkage rates of the two different materials caused by the different wall thickness of the metal lamp cup 3 or the large bottom area of ​​the metal lamp cup 3.

[0033] In this specific embodiment, the metal lamp cup 3 is made of aluminum. Aluminum has excellent thermal conductivity, which can quickly conduct heat from the light source to the lamp housing; aluminum has low density, which is beneficial for lightweight design; aluminum is moderately priced and easy to process, balancing performance and cost.

[0034] In this specific embodiment, the inner cavity 10 includes an upper inner cavity 101 and a lower inner cavity 102 arranged sequentially from top to bottom. A metal lamp holder 3 is disposed in close contact with the upper inner cavity 101. The inner cavity 10 forms a partitioned design, wherein the light source assembly 2 is installed in the upper inner cavity 101. Therefore, only the metal lamp holder 3 needs to be disposed in the upper inner cavity 101, which saves costs while ensuring heat dissipation performance.

[0035] In this specific embodiment, a latch 11 for mounting the reflector 4 is provided in the lower inner cavity 102. This facilitates the precise and detachable positioning and installation of the reflector 4 within the plastic lamp housing 1.

[0036] In this specific embodiment, a latch 12 for mounting the diffuser plate 5 is provided in the lower inner cavity 102. This facilitates the precise and detachable positioning and installation of the diffuser plate 5 within the plastic lamp housing 1.

[0037] In the specific structure of the lamp, the reflector 4 and the diffuser 5 can be used and installed according to the specific needs of the lamp.

Claims

1. An embedded lamp, comprising a plastic lamp housing and a light source assembly, wherein the plastic lamp housing has an inner cavity with a lower opening, characterized in that... A metal lamp holder is fitted tightly into the inner cavity. The metal lamp holder has a chamber with an opening at the bottom, and the light source assembly is installed in the chamber.

2. The recessed lighting fixture as described in claim 1, characterized in that... The top outer wall surface of the metal lamp cup is in close contact with the top inner wall surface of the plastic lamp housing, and the side outer wall surface of the metal lamp cup is in close contact with the side inner wall surface of the plastic lamp housing. The light source assembly includes a substrate, which is in close contact with the top inner wall surface of the metal lamp cup.

3. The recessed lighting fixture as described in claim 1, characterized in that... The plastic lamp housing is made of thermally conductive plastic.

4. The recessed lighting fixture as described in claim 1, characterized in that... The plastic lamp housing and the metal lamp cup are integrally injection molded.

5. An embedded lighting fixture as described in claim 4, characterized in that... The metal lamp cup has an injection overflow hole or groove on its top outer wall surface.

6. An embedded lighting fixture as described in claim 5, characterized in that... The inner wall of the injection overflow hole or groove is an inclined surface with a slope.

7. An embedded lighting fixture as described in claim 1, characterized in that... The metal lamp cup is made of aluminum.

8. An embedded lighting fixture as described in claim 1, characterized in that... The inner cavity includes an upper inner cavity and a lower inner cavity arranged sequentially from top to bottom, and the metal lamp cup is tightly disposed in the upper inner cavity.

9. An embedded lighting fixture as described in claim 8, characterized in that... The lower inner cavity is provided with a pre-drilled slot for mounting a reflector.

10. An embedded lighting fixture as described in claim 8, characterized in that... The lower inner cavity is provided with a pre-installed mounting bracket for the diffuser plate.

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