Anti-glare down lamp

Abstract

The present application relates to a kind of anti-glare down lamp, including the panel of cylindrical, the pipe-shaped radiator connected on panel, the light-reflecting cup of downward opening connected in radiator, LED light source is connected in the upper end of light-reflecting cup and the suspension structure is connected together with panel, LED light source is connected together with radiator, the diffusion plate in the expansion of being located below light-reflecting cup is equipped in the radiator.The first purpose of the present application aims at providing an anti-glare down lamp capable of preventing dazzling, solves the problem of dazzling when LED is used as light source in existing down lamp.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to an anti-glare downlight. Background Technology

[0002] Downlights are lighting fixtures that have a more focused beam compared to surface-mounted lights, and are generally used for general or auxiliary lighting. Downlights are typically installed in three ways: barrel-shaped, surface-mounted, and recessed. Existing downlights, when using LEDs as the light source, integrate the power supply (LED driver) within the lamp body, as seen in downlights like those described in patent number CN201210526359.3. An outer cover is installed over the heat sink, forming the outer surface of the lamp body. The lamp body panel is fixed to the outer shell with multiple bolts, creating a closed heat dissipation cavity. This method reduces heat dissipation efficiency. Therefore, when using high-power LEDs, a fan is needed for cooling, increasing costs. The panel is also fixed to the outer cover with multiple bolts to connect to the heat sink, making installation and removal time-consuming. LEDs have a beam angle of 120°, while downlights typically require a beam angle of 30° or 45°. Existing downlights limit this by adjusting the panel opening angle, resulting in a beam angle less than 120°. Light directed towards the inner surface of the panel is wasted, leading to low light utilization. Furthermore, LEDs can cause glare, which existing downlights fail to address, resulting in poor user comfort. Summary of the Invention

[0003] The first objective of this invention is to provide an anti-glare downlight that can prevent glare, thus solving the problem of glare when using LEDs as the light source in existing downlights.

[0004] The second objective of this utility model is to provide an anti-glare downlight with convenient connection and disassembly between the panel and the heat sink, which solves the problem of inconvenient installation and disassembly of the existing downlight panel connected to the heat sink by bolts.

[0005] The third objective of this invention is to provide an anti-glare downlight with high light utilization efficiency, solving the problem of low light utilization caused by existing downlights reducing the reflection angle through blocking.

[0006] The fourth objective of this invention is to provide an anti-glare downlight with a simple structure and no need for fan cooling, thus solving the problem that existing downlights require fans for heat dissipation.

[0007] The above technical problems are solved by the following technical solution: an anti-glare downlight, comprising a cylindrical panel, a tubular heat sink connected to the panel, a downward-opening reflector connected to the heat sink, an LED light source connected to the upper end of the reflector, and a suspension structure connected to the panel. The LED light source is connected to the heat sink. The characteristic feature is that a diffuser plate located below the reflector is provided inside the heat sink. The diffuser plate helps prevent glare.

[0008] Preferably, the upper surface of the panel has a cylindrical extension section. The suspension structure includes several elastic connecting strips. The lower end of each elastic connecting strip has a connecting piece fixed to the surface of the extension section. The upper end of the elastic connecting strip is inclined away from the radiator. The upper end of each connecting piece has a connecting strip hook. The outer surface of the radiator has several suspension recesses. The connecting piece hooks on the connecting pieces are hooked into the suspension recesses one by one to detachably connect the panel and the radiator. The extension section has a panel support structure. A connecting tube, with its lower end supported on the panel support structure, passes through the extension section. The lower end of the connecting tube has a connecting tube support structure. The upper end of the connecting tube has an external thread section. The lower end of the radiator has an internal thread section, which is connected to the external thread section. The diffuser plate is located inside the connecting tube and rests on the connecting tube support structure. The reflector cup is located above the diffuser plate. The panel is easy to install and remove, achieving the second objective of the invention. Furthermore, this technical solution facilitates the installation of the diffuser plate.

[0009] Preferably, the diffuser plate has a mesh structure, the reflector cup is suspended inside the heat sink, a lower heat dissipation gap is provided between the lower end face of the reflector cup and the diffuser plate, and a side heat dissipation gap is provided between the outer peripheral surface of the reflector cup and the inner peripheral surface of the connecting pipe, communicating with the lower heat dissipation gap. This results in good heat dissipation.

[0010] Preferably, the reflector cup contains a lens, which includes a cylindrical lens body and a convex lens located within the lens body. An air gap exists between the lens body and the reflector cup. The lens body is a total reflection mirror. The light emitted from the LED light source through the lens has a smaller emission angle than the LED light source itself. The lowest point of the lower surface of the convex lens is higher than the lower end surface of the lens body, creating a hot gas retention cavity at the lower end of the lens body. This technical solution achieves the requirement of reducing the illumination angle of the emitted light to meet the requirements while ensuring high light utilization. This fulfills the third objective of the invention. Simultaneously, the hot gas retention cavity allows the hot gas flowing out through the side heat dissipation gap to be retained there (automatically replaced by newly flowing hot gas after cooling), thereby heating the convex lens and preventing water vapor from affecting the illumination effect on the upper surface of the convex lens in winter, thus achieving winter defrosting of the lens.

[0011] Preferably, the upper end of the heat sink has an extension section, and the outer surface of the extension section has several heat dissipation fins. The outer surface of the heat sink and the outer surface of the extension section constitute the outer surface of the lamp body. The extension section is a hollow structure with an opening at the top. A switch for controlling the power channel is connected to the power line of the LED light source. The switch is located inside the upper end of the extension section, and the power line is disconnected from the inner surface of the peripheral wall of the extension section. Eliminating the outer casing improves heat dissipation, and further adding an extension section enhances heat dissipation, thus ensuring that the heat dissipation requirements are met even when using a high-probability LED light source.

[0012] Preferably, the LED light source includes a COB bracket and a COB LED chip plate connected to the upper side of the COB bracket. The COB bracket is suspended on the heat sink, and the reflector is suspended on the COB bracket. A heat dissipation baffle is provided between the heat sink and the extension section. The COB bracket is connected to the heat dissipation baffle and suspended on the heat sink by bracket fixing bolts. The heat dissipation baffle and the COB bracket are in thermally conductive contact. The lower end of the lens body is connected to the lower end of the reflector by several lens parts snap-fit, so that the lens is suspended inside the reflector. COB stands for Chips on Board. This improves the structure of the LED light source and its connection with the reflector and heat sink. The lens is conveniently connected to the reflector.

[0013] Preferably, the lower end of the lens has an outwardly flanged lens portion, which has several lens portion notches distributed along the circumference of the lens. A lens portion locking head is provided within each lens portion notch. The lower end of the reflector cup has several elastic ears extending along the circumference of the reflector cup, each elastic ear having a reflector cup locking hole. Each elastic ear is correspondingly inserted into one of the lens portion notches, and the lens portion locking head is engaged within one of the reflector cup locking holes. One lens portion locking head and one reflector cup locking hole constitute one lens portion locking mechanism. This facilitates the fixing of the lens to the reflector cup.

[0014] Preferably, the COB bracket has several COB bracket notches distributed circumferentially along the reflector cup. A COB bracket suspension block is provided on the side wall of one end of each COB bracket notch along the circumferential direction of the reflector cup. Reflector cup hooks are provided on the upper surface of the reflector cup, distributed circumferentially along the reflector cup. A hook entry channel is formed between the COB bracket suspension block and the side wall of the other end of the COB bracket notch along the circumferential direction of the reflector cup. The reflector cup hooks are hooked one-to-one onto the COB bracket suspension block, suspending the reflector cup on the COB bracket. During assembly, the reflector cup hooks are first aligned with the hook entry channel. Then, the COB bracket and reflector cup are closed until the reflector cup hooks are above the COB bracket suspension block. Finally, the reflector cup is rotated until the COB bracket hooks are above the COB bracket suspension block.

[0015] Preferably, the LED bead board has two electrode contacts for introducing power, located on both sides of the COB bead board. The thermally conductive partition has two through holes, and there are two power lines. The two power lines are threaded through the two through holes and connected to the two electrode contacts respectively. This facilitates insulation.

[0016] Preferably, the free end of the hook of the connecting piece has a folded edge that bends away from the radiator, and the diameter of the inscribed circle defined by the free ends of all the folds is larger than the outer diameter of the lower end of the radiator. This facilitates the assembly of the top panel.

[0017] This invention has the following advantages: The heat sink is equipped with an extension section, which forms the outer surface of the lamp body, allowing heat to dissipate quickly without the need for a fan; a lens composed of a total reflection mirror and a convex mirror is used, forming an air gap between the reflector and the total reflection mirror, ensuring total reflection of the emitted light and adjusting the emission angle by the convex lens to meet requirements, thus avoiding light waste; the lens surface is less prone to frost formation in winter, preventing it from affecting the lighting effect; the panels are connected by a hook-and-loop suspension structure, with the heat sink supported on the panels, preventing the panels from falling off when the heat sink is not in use, and allowing the heat sink to be supported on the panels during use, thus facilitating the connection of the lamp body components and the easy disassembly and installation of the panels; a diffuser plate is provided to prevent glare and is easy to replace. Attached Figure Description

[0018] Figure 1 This is an exploded view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3This is a three-dimensional structural diagram of the heat sink;

[0021] Figure 4 for Figure 2 An enlarged view of point C;

[0022] Figure 5 This is an enlarged schematic diagram of the COB bracket, reflector, and lens.

[0023] Figure 6 This is a three-dimensional structural diagram of the present invention.

[0024] In the diagram: Panel 38, Heat sink 39, Reflector 40, COB bracket 41, COB LED board 42, Extension section 43, Heat sink fins 44, Switch 45, End cap 46, End cap connecting bolt 56, Heat sink baffle 47, Wiring hole in baffle section 48, Power cord 49, Reflector 50, Lens 51, Lens body 52, Convex lens 53, Air gap 54, Bracket fixing bolt 55, Threaded hole in baffle section 67, Cable groove 67, Light outlet hole 68, Outer flange of lens section 69, Notch in lens section 70, Clip in lens section 71. Head, 72. Elastic ear, 73. Snap-hole of reflector cup, 74. Notch of COB bracket, 75. Hanging block of COB bracket, 76. Hook of reflector cup, 77. Hook entry channel, 78. Elastic connecting strip, 79. Rivet, 80. Connecting piece, 82. Hook of connecting strip, 83. Folded edge, 84. Support structure of panel, 85. Connecting pipe, 86. Support structure of connecting pipe, 87. External thread section, 88. Internal thread section, 89. Diffuser plate, 90. Lower heat dissipation gap, 91. Side heat dissipation gap, 92. Hot air retention cavity. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] See Figures 1 to 6An anti-glare downlight includes a cylindrical panel 38, a heat sink 39 connected to the panel, a downward-opening reflector 40 connected inside the heat sink, an LED light source connected to the upper end of the reflector, and a suspension structure connected to the panel. When assembled, the heat sink passes through a mounting hole in the lamp body and is suspended by the suspension structure, with the panel covering the mounting hole. The LED light source is thermally connected to the upper end of the heat sink. Specifically, the LED light source includes a COB bracket 41 and a COB LED chip plate 42 connected to the upper side of the COB bracket. The COB bracket is suspended on the heat sink, and the reflector is suspended on the COB bracket. The LED light source has a 120° beam angle. The heat sink has an extension section 43 at its upper end. Several heat dissipation fins 44 are provided on the outer surface of the extension section. The outer surface of the heat sink and the outer surface of the extension section constitute the outer surface of the lamp body. The extension section is a hollow structure with an open upper end. A switch 45 controlling the power channel is connected to the power supply line of the LED light source. The upper end of the extension section is covered by an end cap 46, which is fixed to the extension section by a threaded connection bolt 56 to a threaded hole inside the extension section. The switch is located inside the upper end of the extension section, and the power supply line is disconnected from the inner surface of the peripheral wall of the extension section. The LED bead board has two electrode contacts for introducing power, located on both sides of the COB bead board. A heat dissipation partition 47 is provided between the heat sink and the extension section. The heat-conducting partition has two through holes 48, and two power lines 49 are provided. The two power lines are threaded through the two through holes and connected to the two electrode contacts respectively.

[0027] The power output connector is connected to the power cord, and the portion of the power output connector and power cord located inside the mounting box and outside the extension section is in a suspended state.

[0028] A reflector cup 50 is installed inside the heat sink. A lens 51 is installed inside the reflector cup. The lens includes a cylindrical lens body 52 and a convex lens 53 located inside the lens body. An air gap 54 is provided between the lens body and the reflector cup. The lens body is a total reflection mirror. The light emitted by the LED light source after passing through the lens has a smaller emission angle than the LED light source, specifically 45°. The COB bracket is connected to the heat dissipation partition plate and suspended inside the heat sink by bracket fixing bolts 55 and threaded holes 67 in the partition plate. The heat dissipation partition plate and the COB bracket are thermally connected together. The reflector cup is fixed to the COB bracket by the reflector cup part buckle and is suspended below the lens body COB bracket. The lower end of the lens body and the lower end of the reflector cup are connected together by several lens part buckles, so that the lens is suspended inside the reflector cup. Two wire grooves 67 are provided on the top of the COB bracket. Two power lines pass through the two wire grooves one by one and are connected to the COB LED beads. A light outlet hole 68 is provided in the middle of the COB bracket. The lower end of the lens is provided with an outer flange 69 of the lens section. The outer flange of the lens section has three lens section notches 70 distributed along the circumference of the lens. The lens section notches penetrate the outer flange of the lens section in the vertical direction (which makes the thickness of the lens section flange thin). A lens section locking head 71 is provided in the lens section notch. The lower end of the reflector cup is provided with three elastic ears 72 extending along the circumference of the reflector cup. The elastic ears have reflector cup locking holes 73. The elastic ears are correspondingly inserted into the lens section notches. The lens section locking head is locked in the reflector cup locking hole. One lens section locking head and one reflector cup locking hole constitute one lens section locking. The COB bracket has three COB bracket section notches 74 distributed circumferentially along the reflector cup. A COB bracket section suspension block 75 is provided on the side wall of one end of the COB bracket section notch along the circumferential direction of the reflector cup. A reflector cup section hook 76 distributed circumferentially along the upper surface of the reflector cup is provided. A hook entry channel 77 is formed between the COB bracket section suspension block and the side wall of the other end of the COB bracket section notch along the circumferential direction of the reflector cup. The reflector cup section hooks are hooked onto the COB bracket section suspension block one by one to suspend the reflector cup on the COB bracket.

[0029] The suspension structure includes two sets of elastic connecting strips 78, which are sheet-like and staggered on both radial sides of the lamp body. A cylindrical extension 79 is provided on the upper surface of the panel. The lower end of each elastic connecting strip has a connecting piece 81 fixed to the surface of the extension by rivets 80. The connecting piece is elastic. The upper end of the elastic connecting strip slopes away from the heat sink. A connecting strip hook 82 is elastically connected to the upper end of the connecting piece. Several suspension recesses are provided on the outer surface of the heat sink. The connecting piece hooks on the connecting pieces hook into these recesses, detachably connecting the panel to the heat sink. The free end of the connecting piece hook has a bent edge 83 that bends away from the heat sink. The diameter of the inscribed circle defined by the free ends of all the bent edges is larger than the outer diameter of the lower end of the heat sink. A panel support structure 84, which is a ring, is provided within the extension. A connecting pipe 85, supported at its lower end on a panel support structure, is inserted within the extension section. A connecting pipe support structure 86, which is a ring, is located at the lower end of the connecting pipe. An external threaded section 87 is located at the upper end of the connecting pipe, and an internal threaded section 88 is located at the lower end of the radiator. The internal threaded section connects to the external threaded section to connect the connecting rod to the radiator. A diffuser plate 89 rests on the connecting pipe support structure within the connecting pipe, and a reflector cup is located above the diffuser plate. The diffuser plate has a mesh structure. A lower heat dissipation gap 90 is provided between the lower end face of the reflector cup and the diffuser plate, and a side heat dissipation gap 91, connecting the lower heat dissipation gap, is provided between the outer circumferential surface of the reflector cup and the inner circumferential surface of the connecting pipe. The lowest point 92 of the lower surface of the convex lens is higher than the lower end face of the lens body, forming a hot gas retention cavity 92 within the lower end of the lens body.

Claims

1. An anti-glare downlight, comprising a cylindrical panel, a tubular heat sink connected to the panel, a downward-opening reflector connected to the heat sink, an LED light source connected to the upper end of the reflector, and a suspension structure connected to the panel, wherein the LED light source is connected to the heat sink, and a diffuser plate located below the reflector is provided inside the heat sink, characterized in that: The upper surface of the panel has a simplified extension section. The suspension structure includes several elastic connecting strips. The lower end of the elastic connecting strip has a connecting piece fixed to the surface of the extension section. The upper end of the elastic connecting strip is inclined away from the heat sink. The upper end of the connecting piece has a connecting strip hook. The outer surface of the heat sink has several suspension recesses. The connecting piece hooks on the connecting pieces are hooked into the suspension recesses one by one to detachably connect the panel and the heat sink. The extension section has a panel support structure. A connecting tube with its lower end supported on the panel support structure passes through the extension section. The lower end of the connecting tube has a connecting tube support structure. The upper end of the connecting tube has an external thread section. The lower end of the heat sink has an internal thread section. The internal thread section is connected to the external thread section. The diffuser plate is located inside the connecting tube and rests on the connecting tube support structure. The reflector cup is located above the diffuser plate. The reflector is suspended inside the radiator. A lower heat dissipation gap is provided between the lower end face of the reflector and the diffuser plate. A side heat dissipation gap is provided between the outer peripheral surface of the reflector and the inner peripheral surface of the connecting pipe, which connects to the lower heat dissipation gap. The reflector cup contains a lens, which includes a cylindrical lens body and a convex lens located inside the lens body. An air gap is provided between the lens body and the reflector cup. The lens body is a total reflection mirror. The light emitted by the LED light source after passing through the lens has a smaller emission angle than the LED light source. The lowest point of the lower surface of the convex lens is higher than the lower end surface of the lens body, so that a hot gas retention cavity is formed in the lower end of the lens body.

2. The anti-glare downlight according to claim 1, characterized in that, The upper end of the heat sink is provided with an extension section, and the outer surface of the extension section is provided with a number of heat dissipation fins. The outer surface of the heat sink and the outer surface of the extension section constitute the outer surface of the lamp body. The extension section is a hollow structure with an opening at the upper end. A switch for controlling the power supply is connected to the power supply line of the LED light source. The switch is located inside the upper end of the extension section. The power supply line is disconnected from the inner surface of the peripheral wall of the extension section.

3. The anti-glare downlight according to claim 2, characterized in that, The LED light source includes a COB bracket and a COB lamp bead plate connected to the upper side of the COB bracket. The COB bracket is suspended on the heat sink, and the reflector is suspended on the COB bracket. A heat dissipation partition is provided between the heat sink and the extension section. The COB bracket is connected to the heat dissipation partition by bracket fixing bolts and is suspended on the heat sink. The heat dissipation partition is thermally connected to the COB bracket. The lower end of the lens body is connected to the lower end of the reflector by several lens parts snap-fit, so that the lens is suspended inside the reflector.

4. The anti-glare downlight according to claim 3, characterized in that, The lower end of the lens is provided with an outward flange of the lens section, and the outward flange of the lens section is provided with a plurality of lens section notches distributed along the circumference of the lens. A lens section snap head is provided in the lens section notch. The lower end of the reflector is provided with a plurality of elastic ears extending along the circumference of the reflector. The elastic ears are provided with reflector section snap holes. The elastic ears are correspondingly inserted into the lens section notches. The lens section snap heads are snapped into the reflector section snap holes. One lens section snap head and one reflector section snap hole constitute one lens section snap.

5. The anti-glare downlight according to claim 3, characterized in that, The COB bracket has several COB bracket notches distributed circumferentially along the reflector cup. A COB bracket suspension block is provided on the side wall of one end of the COB bracket notch along the circumferential direction of the reflector cup. A reflector cup hook is provided on the upper surface of the reflector cup along the circumferential direction of the reflector cup. A hook entry channel is formed between the COB bracket suspension block and the side wall of the other end of the COB bracket notch along the circumferential direction of the reflector cup. The reflector cup hooks are hooked one-to-one with the COB bracket suspension block to suspend the reflector cup on the COB bracket.

6. The anti-glare downlight according to claim 3, characterized in that, The LED bead board has two electrode contacts for introducing power. The two electrode contacts are located on both sides of the COB bead board. The heat dissipation partition has two through holes. There are two power lines. The two power lines are passed through the two through holes in the partition and connected to the two electrode contacts in a corresponding manner.

7. The anti-glare downlight according to claim 1, characterized in that, The free end of the hook of the connecting piece is provided with a folded edge that bends away from the radiator, and the diameter of the inscribed circle determined by the free ends of all the folded edges is greater than the outer diameter of the lower end of the radiator.

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