Heat dissipation LED lamp

Abstract

The present invention relates to a heat dissipation type LED lamp, comprising a substrate with a plurality of LED lamp beads integrated on the surface, a control board electrically connected to the LED lamp beads, a heat dissipation housing, a heat dissipation fan and a lampshade; the lampshade comprises a cover body, a connecting cover, and a lampshade plate, the bottom end of the cover body extends a guide wall inward, the connecting cover can be lifted and slidably installed in the guide wall, and a plurality of retractable connecting rods and a foldable nickel-titanium alloy memory metal sheet are connected between the top of the connecting cover and the top of the inner cavity of the cover body; the connecting cover comprises a dielectric cover, and the dielectric cover has an airtight inner cavity, and a heat dissipation medium liquid is encapsulated in the inner cavity of the dielectric cover; the substrate is installed at the top of the installation cavity of the dielectric cover and a heat-conducting silicone grease layer is fixed between the substrate and the inner side wall of the dielectric cover, and the lampshade plate is installed at the bottom of the installation cavity of the dielectric cover; a ventilation interval is formed between the substrate and the top of the lampshade, a plurality of ventilation holes are respectively opened on the side walls of the cover body, and a vent is formed on the top of the cover body. The present invention combines water cooling and air cooling functions to effectively improve the heat dissipation effect.

Description

Technical Field

[0001] The invention relates to the technical field of LED lamps, and in particular to a heat dissipation type LED lamp. Background Art

[0002] LED is a semiconductor electric light source, light emitting diode, also known as semiconductor lamp, is a filament-free electric light source that directly converts electrical energy into light energy. LED lamps are energy-saving and have a long life, avoiding the trouble of frequent bulb replacement, and are favored by more and more users. However, the heat dissipation problem of LED lamps is a key issue, which seriously affects the light efficiency and life of LED light sources. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a heat dissipation type LED lamp, which combines water cooling and air cooling functions to effectively improve the heat dissipation effect.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a heat dissipation type LED lamp, comprising: a substrate with a plurality of LED lamp beads integrated on the surface, a control board electrically connected to the LED lamp beads, a heat dissipation shell of a cylindrical structure, a heat dissipation fan and a lampshade connected to the substrate, the heat dissipation fan is fixedly connected to the top end of the heat dissipation shell, and the lampshade is fixedly connected to the bottom end of the heat dissipation shell;

[0005] The lampshade comprises a cover body, a connecting cover, and a lampshade plate. An annular guide wall extends inward from the bottom end of the cover body. The connecting cover can be lifted and slidably installed in the guide wall. A plurality of retractable connecting rods and a foldable nickel-titanium alloy memory metal sheet are evenly connected between the top of the connecting cover and the top of the inner cavity of the cover body. The connecting cover comprises a dielectric cover. The dielectric cover is an annular structure and has an installation cavity formed therein. The dielectric cover has an airtight inner cavity, and heat dissipation dielectric liquid is encapsulated in the inner cavity of the dielectric cover. The substrate is installed at the top of the installation cavity of the dielectric cover and a thermal conductive silicone grease layer is fixed between the substrate and the inner wall of the dielectric cover. The lampshade plate is fixedly installed at the bottom of the installation cavity of the dielectric cover.

[0006] A ventilation gap is formed between the substrate and the top of the lampshade, a number of ventilation holes are respectively opened on the side walls of the cover body, the inner cavity of the heat dissipation shell forms a ventilation duct, a ventilation port connected to the ventilation duct is formed on the top of the cover body, and the ventilation duct, the ventilation port, the ventilation gap and the ventilation holes form a heat dissipation channel; the upper part of the control panel is placed in the ventilation duct of the heat dissipation shell.

[0007] On the basis of the above technical solution, the connecting cover also includes a decorative cover; an annular groove is formed on the outer wall of the medium cover, the decorative cover is an annular structure and is fixedly installed in the annular groove, and the decorative cover and the medium cover cooperate to form an annular connecting cover; the decorative cover has an airtight inner cavity, and an antifreeze sterile liquid is encapsulated in the inner cavity of the decorative cover, and a small decorative object that can flow freely is soaked in the antifreeze sterile liquid; there is a certain distance between the bottom end of the annular groove and the bottom end of the connecting cover;

[0008] At normal temperature, the bottom surfaces of the lampshade plate, the dielectric cover and the cover body are flush, the decorative cover is completely stored in the guide wall, and the nickel-titanium alloy memory metal sheet is in a folded state; when the LED lamp works for a period of time, it emits light and heat, and the folded nickel-titanium alloy memory metal sheet stretches out, so that the nickel-titanium alloy memory metal sheet is elongated, and the connecting cover slides downward along the guide wall, exposing the side wall of the dielectric cover and the lower part of the decorative cover.

[0009] Based on the above technical solution, a number of heat sinks distributed in a circular array extend from the outer wall of the heat dissipation shell, and heat dissipation gaps are formed between adjacent heat sinks; the diameter of the vent is larger than the diameter of the ventilation duct, and the ventilation gap is connected to the heat dissipation gap.

[0010] Based on the above technical solution, the heat dissipation medium liquid is water; and the antifreeze sterile liquid and the heat dissipation medium liquid are different in color.

[0011] Compared with the prior art, the present invention has the following beneficial effects: the heat dissipation type LED lamp provided by the present invention comprehensively utilizes water cooling heat dissipation, air cooling heat dissipation and heat conduction functions of the heat sink, thereby greatly improving the overall heat dissipation effect; wherein, after the LED lamp has worked for a period of time, it emits light and generates heat, and the folded nickel-titanium alloy memory metal sheet stretches out, so that the nickel-titanium alloy memory metal sheet is elongated, and the connecting cover slides downward along the guide wall to expose the side wall of the medium cover and the lower part of the decorative cover, thereby increasing the water cooling heat dissipation area and improving the water cooling heat dissipation effect, and at the same time, the small decorations and antifreeze sterile liquid in the decorative cover can be observed to reflect the approximate temperature state of the LED lamp at this time; the downward movement of the connecting cover drives the entire substrate to move downward, thereby expanding the distance of the ventilation interval, which helps to further improve the ventilation effect during air cooling heat dissipation; at the same time, the heat dissipation fan is started to blow cold air toward the ventilation duct, and the cold air carries heat and flows out from the ventilation hole in part, and the other part flows out from the heat dissipation gap between the heat sinks, forming two ventilation channels to realize air convection, so as to realize air cooling heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the bottom view of the heat dissipation housing of the present invention;

[0014] Figure 3This is a state diagram of the heat dissipation housing and the cover body after being installed and matched;

[0015] Figure 4 This is a diagram showing the state of the cover body, the connecting cover and the lampshade plate after being installed and matched;

[0016] Figure 5 This is a diagram showing the state of the medium cover and the decorative cover in the connecting cover of the present invention after being installed and matched.

[0017] The numbers in the figure are: 1-substrate, 11-lamp bead; 2-control board; 3-heat dissipation shell, 31-heat sink, 32-heat dissipation gap, 33-ventilation duct; 4-cooling fan; 5-lamp cover, 51-cover body, 511-guide wall, 512-ventilation hole, 513-ventilation port, 52-connecting cover, 521-medium cover, 5211-annular groove, 5212-installation cavity, 5213-thermal grease layer, 522-decorative cover, 53-lamp cover plate, 54-connecting rod, 55-nickel-titanium alloy memory metal sheet, 56-ventilation interval. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] Reference Figures 1 to 5It can be seen that the present embodiment provides a heat-dissipating LED lamp, comprising: a substrate 1 with a plurality of LED lamp beads 11 integrated on the surface, a control board 2 electrically connected to the LED lamp beads 11, a heat-dissipating shell 3 with a cylindrical structure, a heat-dissipating fan 4 and a lampshade 5 connected to the substrate 1, wherein the coordinated connection among the substrate 1, the lamp beads 11 and the control board 2 is prior art and will not be described in detail. The heat dissipation fan 4 is fixedly connected to the top of the heat dissipation shell 3, the lampshade 5 is fixedly connected to the bottom of the heat dissipation shell 3, the substrate 1 is fixed inside the lampshade 5 and a ventilation gap 56 is formed between the substrate 1 and the top of the lampshade 5, the lampshade 5 is a circular structure and a plurality of ventilation holes 512 are respectively opened on both sides of the side walls, the inner cavity of the heat dissipation shell 3 forms a ventilation duct 33, and a ventilation opening 513 connected to the ventilation duct 33 is formed on the top of the cover body 51, and the diameter of the ventilation opening 513 is larger than the diameter of the ventilation duct 33; a plurality of heat dissipation fins 31 distributed in a circular array extend from the outer wall of the heat dissipation shell 3, and a heat dissipation gap 32 is formed between adjacent heat dissipation fins 31, and the ventilation opening 513 is connected to the heat dissipation gap 32, and the ventilation duct 33, the ventilation opening 513, the ventilation gap 56, the heat dissipation gap 32, and the ventilation hole 512 together form a heat dissipation channel; Figures 1 to 3 shown.

[0021] The upper part of the control panel 2 is placed in the ventilation duct 33 of the heat dissipation housing 3; the heat generated by the LED lamp beads when working is filled in the lampshade and the heat dissipation housing, and the heat dissipation fan 4 is started to blow cold air toward the ventilation duct 33, and carries the heat generated by the LED lamp beads when working out from the ventilation holes 512 and the heat dissipation gap 32. Figure 1 The arrow in the figure represents the direction of wind flow, which has the effect of cooling the substrate and the controller to form air-cooled heat dissipation; and with the help of the heat sink 31 on the heat dissipation housing, heat conduction with the outside world is performed to assist heat dissipation, further improving the heat dissipation effect.

[0022] The lampshade 5 includes a cover body 51, a connecting cover 52, and a lampshade plate 53. The vents 513 and the ventilation holes 512 are opened on the cover body 51. An annular guide wall 511 extends inward from the bottom end of the cover body 51. The connecting cover 52 can be lifted and slidably installed in the guide wall 511. A plurality of retractable connecting rods 54 and foldable nickel-titanium alloy memory metal sheets 55 are evenly connected between the top of the connecting cover 52 and the top of the inner cavity of the cover body 51. The connecting cover 52 is connected to the cover body 51 by means of the connecting rods 54 and the nickel-titanium alloy memory metal sheets 55, and the structure of the guide wall 511 is used to provide a guide for the lifting and lowering movement of the connecting cover 52, thereby ensuring the connection stability and smooth movement of the connecting cover 52 in the cover body 51.

[0023] Reference Figure 1 , Figure 4 and Figure 5The connecting cover 52 is an annular structure and includes a medium cover 521 and a decorative cover 522. The medium cover 521 is an annular structure and has an installation cavity 5212 formed inside and an annular groove 5211 formed on the outer wall. The decorative cover 522 is an annular structure and is fixedly installed in the annular groove 5211. A thermal conductive silicone grease layer is fixed between the decorative cover 522 and the medium cover 521 for heat conduction. The decorative cover 522 cooperates with the medium cover 521 to form a connecting cover 52 with a complete annular structure to facilitate sliding cooperation with the guide wall 511. Both the medium cover 521 and the decorative cover 522 have an airtight inner cavity. The inner cavity of the medium cover 521 is encapsulated with a heat dissipation medium liquid, which can be cold water; the inner cavity of the decorative cover 522 is encapsulated with an antifreeze sterile liquid, in which a small decorative object that can flow freely is soaked; and the antifreeze sterile liquid and the heat dissipation medium liquid are different in color, and there is an obvious color difference to distinguish the two.

[0024] Moreover, there is a certain distance between the bottom end of the annular groove 5211 and the bottom end of the connecting cover 52 (the size of the distance can be determined according to the actual situation during production); under normal conditions, the bottom surface of the connecting cover 52 (i.e., the bottom surface of the dielectric cover) is flush with the bottom surface of the cover body 51, and the bottom surface of the dielectric cover 521 is in contact with the outside world for heat conduction and heat dissipation; when the folded nickel-titanium alloy memory metal sheet 55 is heated and stretched to a certain extent, the connecting rod 54 is stretched accordingly, and the connecting cover 52 moves down to expose the lower part of the decorative cover 522, and the small decorations and antifreeze sterile liquid in the decorative cover 522 can be seen. At the same time, the side wall portion of the dielectric cover 521 corresponding to the bottom of the decorative cover also moves down to the bottom of the guide wall 511, expanding the contact area between the side wall of the dielectric cover 521 and the outside world, thereby increasing the heat dissipation effect. At the same time, when the decorative cover 522 moves down to expose the small decorations and antifreeze sterile liquid, it can be used to reflect that the temperature state of the LED lamp is high at this time, which plays a decorative and reminder role.

[0025] The substrate 1 is installed on the top of the installation cavity 5212 of the medium cover 521, and the lampshade plate 53 is fixedly installed on the bottom of the installation cavity 5212 of the medium cover 521. A thermal conductive silicone grease layer 5213 is fixed between the substrate 1 and the inner wall of the medium cover 521. The substrate 1 transfers heat to the medium cover 521 to utilize the heat dissipation medium liquid to communicate with the outside world for heat dissipation. The heat in the installation cavity between the substrate 1 and the lampshade plate 53 directly exchanges temperature with the heat dissipation medium liquid of the medium cover 521 to play a heat dissipation role. At the same time, the heat of the substrate 1 can also flow along the heat dissipation channel to dissipate heat, thereby realizing the combination of water cooling and air cooling, which greatly improves the heat dissipation effect.

[0026] In this embodiment, at normal temperature, the bottom surfaces of the lampshade plate 53, the dielectric cover 521, and the cover body 51 are flush, the decorative cover 522 is completely received in the inner cavity of the guide wall 511, and the nickel-titanium alloy memory metal sheet 55 is in a folded state. Figure 1When the LED lamp works for a period of time, it emits light and generates heat, and the folded nickel-titanium alloy memory metal sheet 55 stretches out, so that the nickel-titanium alloy memory metal sheet is elongated, and the connecting cover 52 slides downward along the guide wall 511, exposing the side wall of the medium cover 521 and the lower part of the decorative cover 522, thereby increasing the water cooling heat dissipation area and improving the water cooling heat dissipation effect. At the same time, the small decorations and antifreeze sterile liquid (the color is different from the color of the heat dissipation medium liquid) in the decorative cover 522 can be observed to reflect the approximate temperature state of the LED lamp at this time; the downward movement of the connecting cover 52 drives the entire substrate 1 to move downward, thereby expanding the distance of the ventilation interval 56, which helps to further improve the ventilation effect during air cooling and heat dissipation; at the same time, the heat dissipation fan 4 is started to blow cold air toward the ventilation duct 33, and the cold air carries heat and flows out from the ventilation hole 512, and the other part flows out from the heat dissipation gap 32 between the heat dissipation fins, forming two ventilation channels to realize air convection, so as to realize air cooling and heat dissipation; and the heat dissipation fins 31 of the heat dissipation housing 3 are used for heat conduction and heat dissipation, thereby further improving the overall heat dissipation effect of the LED lamp.

Claims

1. A heat dissipation LED lamp, include: A substrate with a plurality of LED lamp beads integrated on the surface, a control board electrically connected to the LED lamp beads, a heat dissipation shell of a cylindrical structure, a heat dissipation fan and a lampshade connected to the substrate, wherein the heat dissipation fan is fixedly connected to the top of the heat dissipation shell, and the lampshade is fixedly connected to the bottom of the heat dissipation shell, and the characteristics are: The lampshade comprises a cover body, a connecting cover, and a lampshade plate. An annular guide wall extends inward from the bottom end of the cover body. The connecting cover can be lifted and slidably installed in the guide wall. A plurality of retractable connecting rods and a foldable nickel-titanium alloy memory metal sheet are evenly connected between the top of the connecting cover and the top of the inner cavity of the cover body. The connecting cover comprises a dielectric cover. The dielectric cover is an annular structure and has an installation cavity formed therein. The dielectric cover has an airtight inner cavity, and heat dissipation dielectric liquid is encapsulated in the inner cavity of the dielectric cover. The substrate is installed at the top of the installation cavity of the dielectric cover and a thermal conductive silicone grease layer is fixed between the substrate and the inner wall of the dielectric cover. The lampshade plate is fixedly installed at the bottom of the installation cavity of the dielectric cover. A ventilation gap is formed between the substrate and the top of the lampshade, a plurality of ventilation holes are respectively opened on the side walls of the cover body, the inner cavity of the heat dissipation shell forms a ventilation duct, a ventilation opening connected to the ventilation duct is formed on the top of the cover body, and the ventilation duct, the ventilation opening, the ventilation gap and the ventilation holes form a heat dissipation channel; the upper part of the control panel is placed in the ventilation duct of the heat dissipation shell; The connecting cover also includes a decorative cover; an annular groove is formed on the outer wall of the medium cover, the decorative cover is annular in structure and is fixedly installed in the annular groove, and the decorative cover cooperates with the medium cover to form an annular connecting cover; the decorative cover has an airtight inner cavity, an antifreeze sterile liquid is encapsulated in the inner cavity of the decorative cover, and a small decorative object that can flow freely is soaked in the antifreeze sterile liquid; there is a certain distance between the bottom end of the annular groove and the bottom end of the connecting cover; At normal temperature, the bottom surfaces of the lampshade plate, the dielectric cover and the cover body are flush, the decorative cover is completely stored in the guide wall, and the nickel-titanium alloy memory metal sheet is in a folded state; when the LED lamp works for a period of time, it emits light and generates heat, and the folded nickel-titanium alloy memory metal sheet stretches out, so that the nickel-titanium alloy memory metal sheet is elongated, and the connecting cover slides downward along the guide wall, exposing the side wall of the dielectric cover and the lower part of the decorative cover; A plurality of heat sinks distributed in a circular array extend from the outer side wall of the heat dissipation shell, and heat dissipation gaps are formed between adjacent heat sinks; the diameter of the ventilation opening is larger than the diameter of the ventilation duct, and the ventilation gap is connected to the heat dissipation gap.

2. According to claim 1, the heat dissipation LED lamp Features: The heat dissipation medium liquid is water; the antifreeze sterile liquid and the heat dissipation medium liquid are different in color.

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