LED down lamp

Abstract

The utility model relates to the field of illumination, in particular to an LED down lamp which comprises a lamp shell and a lamp cover, a flow guide cover is arranged in the lamp shell, an air inlet channel is formed between the outer wall of the flow guide cover and the inner wall of the lamp shell in a matched mode, and a reflection cup is arranged in the flow guide cover. An air outlet is formed between the inner wall of the flow guide cover and the outer wall of the reflection cup in a matched mode, a light-emitting module is installed at the top end of the reflection cup, a heat dissipation plate is attached to the upper surface of the light-emitting module, a plurality of heat dissipation pieces are distributed on the upper surface of the heat dissipation plate, a motor is arranged over the heat dissipation pieces, and the motor is installed on the inner top of the lamp shell. The LED down lamp comprises a lamp shell, a motor is installed at the bottom of the lamp shell, fan blades are installed at the output end of the motor, the size of the lamp cover is matched with that of the bottom of the lamp shell, a light-transmitting piece is installed in the center of the lamp cover, and an annular air outlet, an annular air inlet and an annular air outlet are sequentially and alternately formed in the lamp cover. The safety risk is reduced.

Description

Technical Field

[0001] The utility model relates to the field of lighting, in particular to an LED downlight. Background Art

[0002] Advantages of LED downlights: energy saving, low carbon emissions, long life, good color rendering, and fast response speed. LED downlights are designed to be more beautiful and lightweight, and can maintain the overall unity and perfection of building decoration during installation. Although LED downlights use LED light sources to reduce the heat generated by the device during operation, long-term use will still cause the downlight to continue to heat up. Currently, downlights mainly rely on heat dissipation fins for heat dissipation, and the heat dissipation devices are installed inside the building decoration. Due to the lack of air circulation inside the building decoration, the high temperature generated cannot be effectively dissipated, which can easily cause the internal materials or wiring of the building decoration to age faster, posing a safety hazard. At the same time, it is also difficult to detect immediately, which can easily lead to fire.

[0003] Therefore, it is necessary to provide an LED downlight to solve the above technical problems. Utility Model Content

[0004] The purpose of the present invention is to provide an LED downlight to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An LED downlight, comprising a lamp housing and a lamp cover, wherein a deflector is provided inside the lamp housing, the outer wall structure of the deflector is the same as the inner wall structure of the lamp housing, an air inlet channel is formed between the outer wall of the deflector and the inner wall of the lamp housing, the upper and lower surfaces of the deflector are opened through, a reflector is provided inside the deflector, an air outlet channel is formed between the inner wall of the deflector and the outer wall of the reflector, a light-emitting module is installed on the top of the reflector, a heat sink is attached to the upper surface of the light-emitting module, a plurality of heat sinks are arranged in an array at the center of the upper surface of the heat sink, a motor is provided directly above the heat sink, the motor is installed at the geometric center of the inner top of the lamp housing, and the output end of the motor is downward and arranged It is equipped with fan blades, the size of the lamp cover matches the bottom of the lamp shell, a light-transmitting piece is installed at the center of the lamp cover, the light-transmitting piece is circular, and the edge of the light-transmitting piece is alternately provided with annular air outlets and annular air inlets on the outward extending surface. The preferred number of the annular air outlets is 4, and the preferred number of the annular air inlets is 4. A guide plate 1 and a guide plate 2 are provided in the middle of the annular air outlet and the annular air inlet. The mounting surface of the lamp cover is respectively provided with a reflective cup slot, a guide cover slot, and a lamp shell slot. The reflective cup slot, the guide cover slot, and the lamp shell slot are interference fit with the bottom of the reflective cup, the bottom of the guide cover, and the bottom of the lamp shell respectively.

[0007] Preferably, a temperature sensor is installed on one side of the inner top of the lamp housing.

[0008] Preferably, the fan blades are arranged inside the upper opening of the flow guide cover.

[0009] Preferably, the heat dissipation fins are vertically arranged on the heat dissipation plate. The heat dissipation fins and the heat dissipation plate are of an integral structure and preferably made of pure copper material.

[0010] Preferably, high-temperature resistant coatings are provided on both the inner wall of the flow guide cover and the outer wall of the reflector cup.

[0011] Preferably, the first flow guide plate is arranged vertically downward, and the second flow guide plate is arranged horizontally and obliquely outward.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the fan blades at the output end of the motor rotate inside the upper opening of the flow guide cover to generate negative pressure, enabling air to pass through the air inlet and the air outlet in sequence, so as to dissipate heat more quickly, solve the problem of heat retention inside building materials, improve the service life of building materials, and avoid potential safety hazards. Description of the Drawings

[0014] Figure 1 is the front sectional view of the present utility model;

[0015] Figure 2 is the top sectional view of the flow guide cover of the present utility model;

[0016] Figure 3 is the bottom view of the lamp cover of the present utility model;

[0017] In the figure: lamp housing 1, flow guide cover 2, reflector cup 3, light-emitting module 4, heat dissipation plate 5, heat dissipation fins 6, motor 7, fan blades 8, air intake channel 9, air outlet channel 10, annular air inlet 11, annular air outlet 12, first flow guide plate 13, second flow guide plate 14, lamp cover 15, reflector cup slot 16, flow guide cover slot 17, lamp housing slot 18, temperature sensor 19, light-transmitting sheet 20. Detailed Embodiments

[0018] The following specific embodiments are used to illustrate the implementation manners of the present utility model. Those skilled in the art can understand the advantages and effects of the present utility model from the content disclosed in this specification. It should be noted that the diagrams provided in the following embodiments are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some components in the diagrams will be omitted, enlarged or reduced, which do not represent the actual sizes of the products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the diagrams may be omitted.

[0019] In the drawings of the new embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] As Figures 1-3 shown, an LED downlight includes a lamp housing 1, a lamp cover 15. Inside the lamp housing 1, there is a flow guide cover 2. The outer wall structure of the flow guide cover 2 is the same as the inner wall structure of the lamp housing 1. An air intake channel 9 is formed by the cooperation between the outer wall of the flow guide cover 2 and the inner wall of the lamp housing 1. The upper and lower surfaces of the flow guide cover 2 are open and penetrate through. Inside the flow guide cover 2, there is a reflector cup 3. An air outlet channel 10 is formed by the cooperation between the inner wall of the flow guide cover 2 and the outer wall of the reflector cup 3. At the top of the reflector cup 3, a light-emitting module 4 is installed. A heat dissipation plate 5 is attached to the upper surface of the light-emitting module 4. At the center of the upper surface of the heat dissipation plate 5, a number of heat dissipation fins 6 are distributed in an array. Above the heat dissipation fins 6, there is a motor 7. The motor 7 is installed at the geometric center of the upper end of the lamp housing 1. The output end of the motor 7 faces downward and is equipped with a fan blade 8. The size of the lamp cover 15 matches the bottom of the lamp housing 1. At the center of the lamp cover 15, a light-transmitting sheet 20 is installed. The light-transmitting sheet 20 is circular. The edge of the light-transmitting sheet 20 extends outward and is alternately provided with a circular air outlet 12 and a circular air inlet 11. The preferred number of circular air outlets 12 is 4, and the preferred number of circular air inlets 11 is 4. Between the circular air outlet 12 and the circular air inlet 11, there are a flow guide plate 13 and a flow guide plate 14. The mounting surface of the lamp cover 15 is respectively provided with a reflector cup 3 slot, a flow guide cover 2 slot, and a lamp housing 1 slot. The reflector cup 3 slot, the flow guide cover 2 slot, and the lamp housing 1 slot are in interference fit with the bottom of the reflector cup 3, the bottom of the flow guide cover 2, and the bottom of the lamp housing 1 respectively.

[0021] The working principle of the present utility model during the heat dissipation process:

[0022] When the LED downlight is working, after the temperature sensor 19 installed on the inner top of the lamp housing 1 detects that the temperature exceeds the set temperature, it immediately transmits an electrical signal to the motor 7. The motor 7 starts to drive the fan blade 8 to rotate at a high speed. Since the flow guide cover 2 divides the interior of the lamp housing 1 into an air intake channel 9 and an air outlet channel, at the same time, the high-speed rotating fan blade 8 generates a negative pressure in the air intake channel 9. The cold air enters the air intake channel 9 laterally through the flow guide plate two 14 of the annular air inlet 11, and then passes through the gaps between several heat dissipation fins 6 in the air outlet channel 10. Under the action of the flow guide plate one 13 of the annular air outlet 12, the heat generated by the entire light-emitting module 4 is vertically carried out of the downlight, so as to prevent the discharged hot air from entering again through the flow guide plate two 14 of the annular air inlet 11, thereby preventing the heat from spreading into the building materials, preventing the building materials from aging too fast, improving the service life of the downlight, and reducing potential safety hazards.

[0023] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0024] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An LED downlight, comprising a lamp housing and a lamp cover, characterized in that: A deflector is provided inside the lamp housing, the outer wall structure of the deflector is the same as the inner wall structure of the lamp housing, and the outer wall of the deflector cooperates with the inner wall of the lamp housing to form an air intake channel; The upper and lower surfaces of the deflector are open and connected, a reflective cup is provided inside the deflector, and an air outlet channel is formed between the inner wall of the deflector and the outer wall of the reflective cup; A light-emitting module is mounted on the top of the reflective cup, a heat sink is attached to the upper surface of the light-emitting module, a plurality of heat sinks are arranged in an array at the center of the upper surface of the heat sink, a motor is arranged directly above the heat sink, and the motor is mounted at the geometric center of the inner top of the lamp housing, with the output end of the motor facing downward and equipped with fan blades; The size of the lamp cover matches the bottom of the lamp housing. A light-transmitting sheet is installed at the center of the lamp cover. The light-transmitting sheet is circular. The outwardly extending surface of the edge of the light-transmitting sheet is alternately provided with annular air outlets and annular air inlets. There are four annular air outlets and four annular air inlets. A first deflector plate and a second deflector plate are provided between the annular air outlet and the annular air inlet. The mounting surface of the lamp cover is respectively provided with a reflector slot, a shroud slot and a lamp housing slot, which are respectively interference fit with the bottom of the reflector cup, the bottom of the shroud and the bottom of the lamp housing.

2. The LED downlight according to claim 1, characterized in that: A temperature sensor is installed on one side of the inner top of the lamp housing.

3. The LED downlight according to claim 1, characterized in that: The fan blades are arranged in the opening at the upper end of the air guide cover.

4. The LED downlight according to claim 1, characterized in that: The heat sink is vertically arranged on the heat sink, and the heat sink and the heat sink are an integrated structure.

5. The LED downlight according to claim 1, characterized in that: The inner wall of the air guide cover and the outer wall of the reflective cup are both provided with a high temperature resistant coating.

6. The LED downlight according to claim 1, characterized in that: The first guide plate is vertically downwardly arranged, and the second guide plate is horizontally inclined outwardly arranged.

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