High-power down lamp

Abstract

A heat dissipation base making contact with the inner wall of a barrel shell is arranged in the barrel shell, an LED light source is installed on the heat dissipation base, the LED light source faces the front end of the barrel shell, the back face of the heat dissipation base faces the rear end of the barrel shell, an installation space located on the back face of the heat dissipation base is arranged in the barrel shell, and a driving power source is installed in the installation space. The rear end cover of the barrel shell is provided with the rear cover, the rear cover covers the driving power supply, the driving power supply is arranged inside, the driving power supply is protected, and a connecting line between the driving power supply and the LED light source is prevented from being pulled and abraded. The radiating seat comprises a plurality of radiating fins extending from the center to the inner wall of the cylindrical shell, radiating grooves are formed between the radiating fins at intervals oppositely, rear ventilation holes are formed in the rear cover, heat emitted by the LED light source is conducted to the radiating seat, the radiating seat and the cylindrical shell dissipate heat together, the radiating grooves and the rear ventilation holes form a ventilation channel penetrating through the down lamp, and the radiating fins are arranged in the ventilation channel. The device is used for exchange of hot air in an inner cavity of the down lamp and cold air outside the down lamp, ventilation and heat dissipation are achieved, and heat dissipation performance is improved.

Description

Technical Field

[0001] The utility model relates to the field of lamps, in particular to a high-power downlight. Background Art

[0002] High-power downlights are often used in subway stations, high-speed rail stations, airports, etc. They are also used in high-speed rail station platforms, canopies and other places, so waterproof design is required. LED lamps are all equipped with a driving power supply, and the driving power supply of the downlight can be installed in the downlight cavity or outside the downlight. High-power LED lamps require heat dissipation design, and high-power downlights generally dissipate heat through an external heat sink. Due to the external design of the heat sink, the driving power supply is installed on the outside of the downlight, and the driving power supply needs to be installed separately. The power cord between the driving power supply and the downlight light source is exposed and easily pulled and worn, resulting in poor contact. How to simultaneously solve the heat dissipation problem of high-power downlights and the installation problem of the driving power supply is the main technical problem to be solved by the utility model. In addition, assembly convenience is also a technical problem to be solved by the utility model. Utility Model Content

[0003] The main purpose of the utility model is to provide a high-power downlight, aiming to improve the heat dissipation performance while realizing the internalization of the driving power supply and improving the convenience of assembly.

[0004] The utility model proposes a high-power downlight, comprising a downlight, a heat sink arranged in the downlight and in contact with the inner wall of the downlight, and an LED light source installed on the heat sink, wherein the LED light source faces the front end of the downlight, and the back of the heat sink faces the rear end of the downlight, an installation space is provided in the downlight at the back of the heat sink, and a driving power source is installed in the installation space; the heat sink comprises a plurality of heat sinks extending from the center toward the inner wall of the downlight, the heat sinks are relatively spaced to form heat sinks connected to the front and rear ends of the downlight, and the back cover of the downlight is provided with a rear cover, and the rear cover is provided with a rear vent connected to the heat sink.

[0005] Preferably, the rear cover is connected to the rear end of the cylinder shell by a rotating buckle structure, and is screwed through the side wall of the cylinder shell and locked until the inner end of the screw abuts against the side wall of the rear cover, so that the rear cover is positioned.

[0006] Preferably, the rear cover is circular, the rear port of the cylinder shell is circular, the edge of the rear cover is provided with a plurality of vertically recessed positioning entrances and a rotating track arranged along the circumferential curvature of the rear cover and connected to one side of the positioning entrance, the inner wall of the rear port of the cylinder shell is provided with a clamping block corresponding to the positioning entrance, the clamping block extends from the positioning entrance to one side of the rotating track, the clamping block is rotated to the rotating track, and the clamping block and the rotating track are clamped with each other.

[0007] Preferably, a screw hole corresponding to the locking entrance is provided on the side wall of the cylinder shell, and the screw passes through the screw hole into the locking entrance and abuts against the inner wall surface of the locking entrance.

[0008] Preferably, a support block for supporting the rear cover is provided on the inner wall of the rear port of the cylinder shell, the support block is located below the clamping block, and the two are relatively spaced to form a rotating space for the rotating track to pass through.

[0009] Preferably, two horizontal sides of the supporting block protrude from two horizontal sides of the clamping block.

[0010] Preferably, the heat sink and the tube shell are integrally formed, a light source mounting groove is provided at the front end of the heat sink, the LED light source is installed in the light source mounting groove, a light output assembly is provided on a sealing cover on the light source mounting groove, and a first mounting hole connected to the light source mounting groove and a waterproof breathable valve installed on the back of the heat sink through the first mounting hole is provided on the back of the heat sink.

[0011] Preferably, a side recess corresponding to and communicating with the first mounting hole is provided on a side wall of the light source mounting groove.

[0012] Preferably, a wire hole connected to the light source mounting slot is provided on the back of the heat sink, a waterproof wire outlet screw is installed above the wire hole, and the power cord of the driving power supply extends from the waterproof wire outlet screw and the wire hole into the light source mounting slot to be electrically connected to the LED light source.

[0013] Preferably, the light output assembly comprises a reflective cup, a light-transmitting plate covering the reflective cup, and a sealing ring, wherein the sealing ring wraps the edges of the reflective cup and the light-transmitting plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The high-power downlight proposed in the utility model has a heat sink in contact with the inner wall of the shell, an LED light source is mounted on the heat sink, the LED light source faces the front end of the shell, the back of the heat sink faces the rear end of the shell, an installation space is provided on the back of the heat sink in the shell, a driving power supply is installed in the installation space, a rear cover is provided on the rear end of the shell, the driving power supply cover is arranged inside the rear cover, the driving power supply is built-in, the driving power supply is protected, and the connection line between the driving power supply and the LED light source is prevented from being pulled or worn.

[0016] The heat sink includes a plurality of heat sinks extending from the center to the inner wall of the tube shell. The heat sinks are relatively spaced to form heat sinks connected to the front and rear ends of the tube shell. The rear cover is provided with rear ventilation holes corresponding to the heat sinks. The heat emitted by the high-power LED light source is conducted to the heat sink, and the heat is conducted to the tube shell through the heat sink. The heat is dissipated by the heat sink and the tube shell together. The arrangement of the heat sink can increase the heat dissipation area. At the same time, the heat sink and the rear ventilation holes form a ventilation channel that runs through the downlight, which is used for the exchange of hot air in the downlight cavity and cold air outside the downlight, thereby ventilating and dissipating the heat and improving the heat dissipation performance.

[0017] The rear cover is connected to the rear end of the cylinder shell by a rotating buckle structure, and is screwed through the side wall of the cylinder shell and locked until the inner end of the screw rests on the side wall of the rear cover, so that the rear cover is positioned and the assembly operation of the rear cover is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The schematic diagram of the tube shell with the heat sink of the high-power downlight in the embodiment of the utility model is Figure 1 .

[0019] Figure 2 The schematic diagram of the tube shell with the heat sink of the high-power downlight in the embodiment of the utility model is Figure 2 .

[0020] Figure 3 The schematic diagram of the tube shell with the heat sink of the high-power downlight in the embodiment of the utility model is Figure 3 .

[0021] Figure 4 It is a schematic diagram of the rear cover of the high-power downlight in the embodiment of the utility model.

[0022] Figure 5 This is a state diagram of a high-power downlight in an embodiment of the present utility model when the clamping block in the tube shell is placed on the rear cover to lock the entrance.

[0023] Figure 6 This is a state diagram of a high-power downlight in an embodiment of the present utility model when the clamping block in the tube shell is rotated onto the rotating track.

[0024] Figure 7 It is a schematic diagram of the embodiment of the utility model when the rear cover of the high-power downlight is installed on the rear port of the downlight shell.

[0025] Figure 8 It is a schematic diagram of a high-power downlight face ring installed at the front end of the downlight shell in an embodiment of the present utility model.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout identify the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] Reference Figures 1 to 8 The embodiment of the utility model provides a high-power downlight, including a tube shell 1, a heat sink 2 disposed in the tube shell 1 and in contact with the inner wall of the tube shell 1, and an LED light source mounted on the heat sink 2, wherein the LED light source faces the front end of the tube shell 1, and the back of the heat sink 2 faces the rear end of the tube shell 1. The tube shell 1 is provided with an installation space located at the back of the heat sink 2, and a driving power source is installed in the installation space. The rear end cover of the tube shell 1 is provided with a rear cover 3, and the rear cover 3 covers the driving power source, protects the driving power source in the tube shell 1, and prevents the connection line between the driving power source and the LED light source from being pulled and worn.

[0031] The heat sink 2 includes a plurality of heat sinks 21 extending from the center to the inner wall of the tube shell. The heat sinks 21 are spaced relatively to form heat sinks 22 connected to the front and rear ends of the tube shell 1. The rear cover 3 is provided with rear vents 31 corresponding to the heat sinks 22. If there is no accessory at the front end of the tube shell to block the heat sink, the heat sink and the rear vents form a ventilation channel that runs through the downlight from front to back; if an accessory that can block the heat sink is installed at the front end of the tube shell, a front vent corresponding to the heat sink is set on the accessory, so that the front vent, the heat sink and the rear vent form a ventilation channel that runs through the downlight from front to back. For example, the manufacturer decides whether to install a face ring at the front end of the tube shell according to demand. If it is required, a face ring 4 is installed at the front end of the tube shell, and a front vent 41 corresponding to the heat sink 22 is set on the face ring 4.

[0032] The heat sink 2 and the cylindrical shell 1 are made of a high thermal conductivity metal. The heat emitted by the high-power LED light source is conducted to the heat sink 2, and the heat is conducted to the cylindrical shell 1 through the heat sink 21. The heat is dissipated by the heat sink 2 and the cylindrical shell 1 together. The setting of the heat sink 21 can increase the heat dissipation area. At the same time, the ventilation channel serves as an exchange channel for the hot air in the inner cavity of the cylindrical shell 1 and the cold air outside the cylindrical shell 1, which ventilates and dissipates heat, thereby improving the heat dissipation performance.

[0033] The rear cover 3 is connected to the rear end of the cylinder shell 1 through a rotating buckle structure, and is screwed through the side wall of the cylinder shell 1 and locked until the inner end of the screw abuts against the side wall of the rear cover 3, so that the rear cover 3 is positioned.

[0034] Specifically, the rear cover 3 is circular, the rear port of the cylinder shell 1 is circular, the edge of the rear cover 3 is provided with a plurality of vertically recessed positioning entrances 32 and a rotating track 33 connected to one side of the positioning entrance 32 and arranged along the circumferential curvature of the rear cover 3, the inner wall of the rear port of the cylinder shell 1 is provided with a clamping block 11 corresponding to the positioning entrance 32, the clamping block 11 extends from the positioning entrance 32 to one side of the rotating track 33, the clamping block 11 is rotated to the rotating track 33, the clamping block 11 is clamped with the rotating track 33, so that the rear cover 3 is assembled at the rear port of the cylinder shell 1.

[0035] A mounting bracket can be installed on the rear cover 3, and the downlight can be surface mounted through the mounting bracket.

[0036] The side wall of the cylinder shell 1 is provided with a screw hole 14 corresponding to the locking entrance 32. When the locking block 11 and the rotating track 33 are locked with each other, the screw passes through the screw hole 14 into the locking entrance 32 and abuts against the inner wall surface of the locking entrance 32, so that the rear cover 3 and the cylinder shell 1 cannot rotate relative to each other, and the rear cover 3 is fixed at the rear end of the cylinder shell 1. Since the screw passes through the locking entrance 32 and blocks the locking entrance 32, even if the contact between the screw and the rear cover 3 is loosened, the rear cover 3 and the cylinder shell 1 can rotate relative to each other, and the locking block 11 on the rotating track 33 cannot be rotated into the locking entrance 32, which can prevent the rear cover 3 and the cylinder shell 1 from being separated from each other, and is safer to use.

[0037] The inner wall of the rear port of the cylinder shell 1 is provided with a support block 12 for supporting the rear cover, and the support block 12 is located below the clamping block 11, and the two are spaced relatively to form a rotating space 13 for the rotating track 33 to pass through. When the rear cover 3 is installed at the rear port of the cylinder shell 1, the rear cover 3 is supported on the support block 12.

[0038] The horizontal sides of the support block 12 protrude from the horizontal sides of the clamping block 11, so that when the rear cover 3 is placed on the rear port of the cylinder shell 1 and the clamping block 11 is placed on the clamping entrance 32, the rear cover 3 is supported on the horizontal sides of the support block 12, so that the rear cover 3 remains balanced as a whole; then the rear cover 3 and the cylinder shell 1 are relatively rotated, and the rotating track 33 passes through the rotating space 13, so that the clamping block 11 is rotated onto the rotating track 33, and the assembly operation is simple.

[0039] The front end of the heat sink 2 is recessed with a light source installation groove 23, the LED light source is installed in the light source installation groove 23, and the sealing cover on the light source installation groove 23 is provided with a light output component, and the light emitted by the LED light source is emitted through the light output component.

[0040] The light emitting assembly includes a reflector cup, a light-transmitting plate covering the reflector cup, and a sealing ring. The reflector cup is placed in the light source installation groove 23. The sealing ring wraps the edges of the reflector cup and the light-transmitting plate, and is placed on the edge of the front end of the light source installation groove 23, and is pressed on the lower end surface of the face ring 4, and is fixed by the face ring 4. The provision of the sealing ring can increase the waterproof performance and prevent rainwater from entering the light source installation groove 23.

[0041] In order to balance the pressure difference between the inside and outside of the light source installation slot 23, a first installation hole 24 connected to the light source installation slot 23 and a waterproof breathable valve installed on the back of the heat sink 2 through the first installation hole 24 are provided on the back of the heat sink 2. The waterproof breathable valve realizes continuous gas exchange between the inside and outside of the light source installation slot 23, effectively preventing fogging and condensation on the light-transmitting plate.

[0042] The side wall of the light source installation groove 23 is provided with a side recess 26 corresponding to and connected to the first installation hole 24 . The side recess 26 is located outside the reflector cup. A ventilation gap is left between the bottom of the reflector cup and the bottom of the light source installation groove 23 .

[0043] The back of the heat sink 2 is provided with a wire hole 25 connected to the light source installation groove 23, a waterproof wire outlet screw is installed above the wire hole 25, the driving power supply is set as a waterproof driving power supply, and the power line of the driving power supply extends from the waterproof wire outlet screw and the wire hole 25 into the light source installation groove 23 to be electrically connected to the LED light source, thereby improving the overall waterproof performance of the downlight. This high-power downlight is both waterproof and breathable, can protect the driving power supply, and has excellent heat dissipation performance.

[0044] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A high-power downlight, characterized in that: It comprises a cylinder shell, a heat sink disposed in the cylinder shell and in contact with the inner wall of the cylinder shell, and an LED light source mounted on the heat sink, wherein the LED light source faces the front end of the cylinder shell, and the back of the heat sink faces the rear end of the cylinder shell; an installation space is provided in the cylinder shell and located on the back of the heat sink, and a driving power source is installed in the installation space; the heat sink comprises a plurality of heat sinks extending from the center to the inner wall of the cylinder shell, the heat sinks are relatively spaced to form heat sinks connected to the front and rear ends of the cylinder shell, and the rear end cover of the cylinder shell is provided with a rear cover, and the rear cover is provided with a rear ventilation hole connected to the heat sink.

2. The high-power downlight according to claim 1, characterized in that: The rear cover is connected to the rear end of the cylinder shell through a rotating buckle structure, and is screwed through the side wall of the cylinder shell and locked until the inner end of the screw abuts against the side wall of the rear cover, so that the rear cover is positioned.

3. The high-power downlight according to claim 2, characterized in that: The rear cover is circular, the rear port of the cylinder shell is circular, the edge of the rear cover is provided with a plurality of vertically recessed locking entrances and a rotating track arranged along the circumferential curvature of the rear cover and connected to one side of the locking entrance, the inner wall of the rear port of the cylinder shell is provided with a locking block corresponding to the locking entrance, the locking block extends from the locking entrance to one side of the rotating track, the locking block is rotated to the rotating track, and the locking block and the rotating track are mutually engaged.

4. The high-power downlight according to claim 3, characterized in that: The side wall of the cylinder shell is provided with a screw hole corresponding to the locking entrance, and the screw passes through the screw hole into the locking entrance and abuts against the inner wall surface of the locking entrance.

5. The high-power downlight according to claim 4, characterized in that: A support block for supporting the rear cover is disposed on the inner wall of the rear port of the cylinder shell. The support block is located below the clamping block, and the two are spaced relatively to form a rotating space for the rotating track to pass through.

6. The high-power downlight according to claim 5, characterized in that: The horizontal sides of the support block protrude from the horizontal sides of the clamping block.

7. The high-power downlight according to any one of claims 1 to 6, characterized in that: The heat sink is integrally formed with the cylinder shell, a light source mounting groove is provided at the front end of the heat sink, the LED light source is installed in the light source mounting groove, a light output assembly is provided on a sealing cover on the light source mounting groove, a first mounting hole connected to the light source mounting groove and a waterproof breathable valve installed on the back of the heat sink through the first mounting hole is provided on the back of the heat sink.

8. The high-power downlight according to claim 7, characterized in that: The side wall of the light source installation groove is provided with a side recess corresponding to and communicating with the first installation hole.

9. The high-power downlight according to claim 7, characterized in that: A wire hole connected to the light source mounting slot is provided on the back of the heat sink, a waterproof wire outlet screw is installed above the wire hole, and the power cord of the driving power supply extends from the waterproof wire outlet screw and the wire hole into the light source mounting slot and is electrically connected to the LED light source.

10. The high-power downlight according to claim 7, characterized in that: The light output assembly comprises a reflective cup, a light-transmitting plate covering the reflective cup, and a sealing ring, wherein the sealing ring wraps the edges of the reflective cup and the light-transmitting plate.

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