WO2016037385A1 - Omnidirectional led lamp - Google Patents

Abstract

An omnidirectional LED lamp comprising a light base (1), a heat sink (2), and a light core (3). A driver circuit is provided in the base. The lower extremity of the heat sink (2) is connected to the light base (1). The upper extremity of the heat sink (2) is sleeved in the light core (3). A light shade (4) is mounted on the heat sink (2) and accommodates the light core (3). The light core (3) is electrically connected to the driver circuit. A spray coating layer is provided on the surface of the light core (3). A circuit layer is formed on the spray coating layer by laser etching and chemical plating. Pins and an LED light bulb (31) connected to the circuit layer are provided on the light core (3). The bottom of the LED light bulb (31) is affixed to the spray coating layer. The heat sink (2) comprises a thermoplastic housing (21) and an aluminum thermally-conductive sleeve (22). The aluminum thermally-conductive sleeve (22) is a stepped column structure. The lower part of the aluminum thermally-conductive sleeve (22) is inserted into the thermoplastic housing (21). The upper part of the aluminum thermally-conductive sleeve (22) is inserted into the light core (3).

Description

Full-circumference LED bulb

 Technical field

 The invention relates to the technical field of LED lamps, and in particular to a full-circumference LED bulb.

 Background technique

People often use their leisure time to enjoy music in their daily life, so as to relieve their emotions and achieve the effect of blood pressure reduction. People often use mobile phones, MP3s and other mobile terminals to play music, and mobile phones are the most used tools for people to carry, and they are used the most. Since the phone is directly turned on for listening to music, too much volume will affect other people, especially in the office lunch break or other multi-person room. At this time, you need to plug in the phone with your headphones and use the headphones to listen to music. Will affect other people. In order to be convenient to use, many earphones are now line-controlled headphones, that is, the volume adjustment can be directly performed on the earphone line, fast forward or next, and the music function of the mobile terminal is turned on or off.

At present, most of the wire-controlled earphones use the voltage-dividing method to perform button detection. When the microphone MIC on the wire-controlled earphone is being used, if the button is pressed to adjust the volume, the MIC bias voltage will change. Produce very harsh noise --- Pop sound, affecting the quality of the call.

 LED has the advantages of high luminous efficiency, small volume, no mercury pollution, long service life, etc., and has gradually gained popularity in life, but LED It is a point light source, which has a certain light collecting property, and its light-emitting angle is mostly forward with a certain taper, and can not be illuminated in all directions like a conventional bulb lamp, and the light-emitting angle of the side of the conventional bulb lamp is generally More than 270°, it is generally considered that the illuminating angle of the side is greater than 270°, that is, the effect of full-circumference is achieved.

 led The luminaire generally needs to be equipped with a heat sink, and the commonly used heat sink is made of aluminum or copper, and when the LED chip is mounted on the heat sink of the type, the heat sink blocks a certain amount of light, which not only causes loss of the light source, but also It will cause a certain vignetting or insufficient brightness on the side and side of the lamp, which will not achieve the effect of full-circumference.

 Currently, LED Most of the lamps are soldered to the aluminum substrate or the ceramic substrate, and then the aluminum substrate or the ceramic substrate and the support are connected. Therefore, the LED lamp bead and the support are separated by an aluminum substrate or a ceramic substrate. Due to the presence of the aluminum substrate or the ceramic substrate, the thermal resistance between the LED lamp bead and the support is increased, and the heat dissipation effect is reduced, resulting in LED The life of the lamp bead is greatly reduced. In addition, the aluminum substrate has high manufacturing cost, complicated manufacturing process, and poor electrical insulation performance; the ceramic substrate requires high-temperature sintering molding, complicated process, high price, poor mechanical properties, and brittleness. Therefore, the current LED lamp has a complicated structure, high manufacturing cost, complicated manufacturing process, poor heat dissipation effect, and insufficient full-circumference effect.

 Summary of the invention

The technical problem to be solved by the invention is to provide a full-circumference LED bulb lamp, which is convenient to replace the wick, has good heat dissipation effect, realizes full-circumference illumination, and emits light uniformly in all directions.

 In order to solve the above technical problems, the present invention adopts the following technical solutions:

A full-circumference LED bulb lamp comprises a lamp holder, a heat sink and a wick, wherein a driving circuit is arranged in the base, a lower end of the heat sink is connected with the lamp holder, an upper end of the heat sink is set in the wick, and the lamp cover is mounted on the heat sink. And accommodating the wick, the wick is electrically connected to the driving circuit, and the surface of the wick is provided with a spraying layer on the spraying layer After laser etching and electroless plating, a circuit layer is formed, and an LED lamp bead is arranged on the wick, and the pin of the LED lamp bead is connected with the circuit layer, and the bottom of the LED lamp bead is closely attached to the sprayed layer.

The heat sink comprises a thermoplastic outer casing and an aluminum heat conducting sleeve. The aluminum heat conducting sleeve is a stepped column structure, and the lower part of the aluminum heat conducting sleeve is inserted into the hot plastic outer casing, and the upper part of the aluminum heat conducting sleeve is inserted into the wick.

 For the shape of the wick and the heat sink, the present invention has the following three preferred embodiments.

Method 1: The outer surface of the wick is cylindrical, the inside of the wick is a cylindrical cavity, and the upper part of the aluminum heat conducting sleeve of the heat sink is cylindrical, and the cylindrical upper part of the aluminum heat conducting sleeve is inserted into the cylindrical cavity inside the wick. .

Manner 2: The outer surface of the wick is spherical, the inside of the wick is a cylindrical cavity, and the upper part of the aluminum heat conducting sleeve of the heat sink is cylindrical, and the cylindrical upper part of the aluminum heat conducting sleeve is inserted into the cylindrical cavity inside the wick.

Method 3: The outer surface of the wick is a hexagonal prism shape, the inside of the wick is a hexagonal prism cavity, and the upper part of the aluminum heat conduction sleeve of the heat sink is hexagonal prism shape, and the upper portion of the hexagonal prism of the aluminum heat conduction sleeve is inserted into the wick. Internal hexagonal cylindrical cavity.

Further, the sprayed layer has a thickness of 5 μm to 300 μm. The circuit layer has a thickness of 5 μm to 300 μm. The thickness of the sprayed layer and the circuit layer is determined according to the power of the bulb. If the thickness is less than 5 μm, the required electric power, the safe current carrying capacity and the effect of the invention are not obtained; if the thickness of the sprayed layer or the circuit layer is greater than 300 μm, It will waste resources and increase costs.

 The wick and the heat sink are locked by screws, or locked by a snap, or screwed.

 The wick is a flexible substrate.

 The spray coating on the surface of the wick is sprayed from a selectable metallized powder coating.

 The structural design of the invention is reasonable and simple, the manufacturing process is simple and reliable, the manufacturing cost is low, the heat dissipation effect is good, and the LED is extended. The service life of the bulb can achieve the effect of full-circumference illumination, emitting uniform light in all directions, the wick is easy to assemble and disassemble, and can be replaced at any time. Other components can be recycled, which is environmentally friendly and practical.

 DRAWINGS

 1 is a schematic perspective view of a first embodiment of the present invention;

 2 is a schematic structural view of an exploded state according to Embodiment 1 of the present invention;

 3 is a schematic perspective view of a second embodiment of the present invention;

 4 is a schematic structural view of an exploded state according to a second embodiment of the present invention;

 Figure 5 is a perspective view showing a three-dimensional structure of a third embodiment of the present invention;

 6 is a schematic structural view of an exploded state according to a third embodiment of the present invention;

 The following is a description of the symbol marking of the parts of the present invention:

 Lamp holder 1, radiator 2, wick 3, lampshade 4, thermoplastic housing 21, aluminum thermal sleeve 22, LED lamp bead 31.

 detailed description

 In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

The invention discloses a full-circumference LED bulb lamp, as shown in Figures 1 and 2, a full-circumference LED bulb lamp comprising a lamp holder 1, a heat sink 2 and a wick 3, and a drive in the base a circuit, the lower end of the heat sink 2 is connected to the lamp holder 1, the upper end of the heat sink 2 is set in the wick 3, the lamp cover 4 is mounted on the heat sink 2 and the wick 3 is accommodated, the lamp cover 4 is a transparent lamp cover, and the wick 3 is The driving circuit is electrically connected, the surface of the wick 3 is provided with a spraying layer, and the spraying layer is sprayed by a powder coating of a selectable metallization. After the laser etching and electroless plating, a circuit layer is formed, and the LED lamp bead 31 is disposed on the wick, and the pin of the LED lamp bead 31 is connected with the circuit layer to form a conduction circuit between the LED lamp bead 31 and the circuit layer. The bottom of the lamp bead is closely attached to the sprayed layer, and the wick is a flexible substrate. Since the bottom of the LED lamp bead is closely attached to the sprayed layer, the heat generated by the LED lamp bead 31 is conducted to the heat sink 2 through the wick 3 for heat dissipation, and the heat dissipation effect is good, and the service life of the LED lamp is effectively extended and the insulation is safe. In addition, the number of LED lamp beads can be flexibly set according to the surface area of the wick and the needs of the application, and is not specifically limited. Flexible substrate optional Made of high heat resistance and high thermal conductivity insulating plastic to improve heat resistance and thermal conductivity. The thickness of the sprayed layer is set to 5 μm to 300 μm, and the thickness of the circuit layer is set to 5 μm to 300 μm to achieve an optimum overall matching effect. The power of the LED lamp bead can be selected from 0.5 to 10W. The thickness of the sprayed layer and the circuit layer is determined according to the power of the bulb. If the thickness is less than 5 μm, the required electric power, the safe current carrying capacity and the effect of the invention are not obtained; if the thickness of the sprayed layer or the circuit layer is greater than 300 μm, It will waste resources and increase costs.

In addition, the heat sink 2 includes a thermoplastic outer casing 21 and an aluminum heat conducting sleeve 22, and the aluminum heat conducting sleeve 22 has a stepped column structure, that is, the upper end of the heat sink 2 has an outwardly protruding shape, and the lower portion of the aluminum heat conducting sleeve 22 is inserted into the thermoplastic outer casing 21. The upper portion of the aluminum heat conductive sleeve 22 is inserted into the wick 3 to lift the wick 3 up. Since the outer casing is made of thermoplastic, it has better heat dissipation properties. The lower portion of the thermoplastic housing 21 is connected to the socket 1 and can be attached by screws, or other mounting means, which is conventionally selected and will not be described in detail herein. The wick and the heat sink can be locked by screws. For example, one or more screw pad holes are arranged in the lower part of the wick, screw holes are arranged at corresponding positions on the heat sink, and the wick and the heat sink are tightly connected by screws. Between the wick and the heat sink, some buckles can also be provided, and the buckles can be directly fastened. For example, a protruding buckle is arranged on the wick, and a corresponding card slot is arranged on the heat sink, and the protruding buckle is inserted into the card slot. A secure attachment of the wick to the heat sink is achieved. Or a thread is arranged on the outer surface of the upper part of the heat sink, and corresponding matching threads are arranged inside the wick, and the installation connection of the wick and the heat sink is realized by screwing. It should be noted that the manner of attaching the wick and the heat sink listed above is not limited. Based on this idea, the manner in which the wick and the heat sink can be connected and connected can be adopted, and is not listed here.

When the LED lamp bead 31 on the wick 3 emits light, heat is generated, and the heat is transmitted to the wick 3 through the sprayed layer, and then transferred from the wick to the aluminum heat-conducting sleeve 22, and the heat is transferred to the hot plastic casing through the aluminum heat-conducting sleeve, thereby externally The air exchanges heat to achieve heat dissipation and good heat dissipation.

 In addition, the present invention also optimizes the shape of the wick and the heat sink, specifically the following three preferred embodiments.

Embodiment 1, as shown in Figures 1 and 2, the outer surface of the wick 3 is cylindrical, the inside of the wick 3 is a cylindrical cavity, and the upper portion of the aluminum heat conducting sleeve 22 in the heat sink 2 is cylindrical, and the aluminum heat conduction The cylindrical upper portion of the sleeve 22 is inserted into the cylindrical cavity inside the wick 3, and the upper portion of the aluminum heat-conducting sleeve 22 supports the wick support so that the wick is completely located inside the lamp cover, so that the LED bulb has an illumination angle greater than 270°, reaching the whole The effect of Zhou Guang lighting.

Embodiment 2: As shown in FIGS. 3 and 4, the surface of the wick 3 is spherical, the inside of the wick 3 is a cylindrical cavity, and the upper part of the aluminum heat-conducting sleeve 22 of the heat sink 2 is cylindrical, and the aluminum heat-conducting sleeve 22 The cylindrical upper part is inserted into the cylindrical cavity inside the wick 3, and the upper part of the aluminum heat-conducting sleeve 22 supports the wick support so that the wick is completely located inside the lamp cover, so that the LED bulb has an illumination angle greater than 270°, reaching full-circumference The effect of lighting.

Embodiment 3: As shown in FIGS. 5 and 6, the outer surface of the wick 3 has a hexagonal prism shape, the inside of the wick 3 is a hexagonal prism cavity, and the upper portion of the aluminum heat conduction sleeve 22 of the heat sink 2 is a hexagonal prism. The hexagonal prism-shaped upper portion of the aluminum heat-conducting sleeve 22 is inserted into the hexagonal cylindrical cavity inside the wick 3. The upper portion of the aluminum heat-conducting sleeve 22 supports the wick support so that the wick is completely located inside the lamp cover, so that the LED bulb has an illumination angle. More than 270°, the effect of full-circumference illumination is achieved.

The preferred embodiments of the present invention have been specifically described above. Of course, the present invention may also adopt a form different from the above-described embodiments, and these do not constitute any limitation on the present embodiment, and those skilled in the art do not violate the spirit of the present invention. Equivalent transformations or corresponding modifications made under the premise of the present invention should fall within the scope of the present invention.

Claims (10)

1. A full-circumference LED bulb lamp comprises a lamp holder, a heat sink and a wick, and a driving circuit is arranged in the base, wherein the lower end of the heat sink is connected with the lamp holder, and the upper end of the heat sink is set in the wick, and the lamp cover is mounted The wick is electrically connected to the driving circuit, and the wick is electrically connected to the driving circuit. The surface of the wick is provided with a spraying layer. The spraying layer is formed by a laser etching and electroless plating to form a circuit layer, and the wick is provided with an LED lamp bead. The pin of the LED lamp bead is connected to the circuit layer, and the bottom of the LED lamp bead is closely attached to the sprayed layer.
2. The full-circumference LED bulb of claim 1 , wherein the heat sink comprises a thermoplastic outer casing and an aluminum thermal sleeve, the aluminum thermal sleeve is a stepped column structure, and the lower aluminum thermal sleeve is inserted in the thermal plastic outer casing. The upper part of the aluminum heat conducting sleeve is inserted into the wick.
3. The full-circumference LED bulb according to claim 2, wherein the outer surface of the wick is cylindrical, the inside of the wick is a cylindrical cavity, and the upper part of the aluminum heat conducting sleeve of the heat sink is cylindrical, the aluminum The cylindrical upper portion of the thermally conductive sleeve is inserted into a cylindrical cavity inside the wick.
4. The full-circumference LED bulb of claim 2, wherein the outer surface of the wick is spherical, the interior of the wick is a cylindrical cavity, and the upper portion of the aluminum heat conducting sleeve of the heat sink is cylindrical, the aluminum The cylindrical upper portion of the thermally conductive sleeve is inserted into a cylindrical cavity inside the wick.
5. The full-circumference LED bulb according to claim 2, wherein the outer surface of the wick is a hexagonal prism shape, the inside of the wick is a hexagonal prism-shaped cavity, and the upper part of the aluminum heat conduction sleeve of the heat sink is set to six. In a prismatic shape, the upper portion of the hexagonal prism of the aluminum heat conducting sleeve is inserted into a hexagonal cylindrical cavity inside the wick.
6. The full-period LED bulb according to any one of claims 1 to 5, wherein the sprayed layer has a thickness of 5 μm to 300 μm.
7. The full-period LED bulb according to claim 6, wherein the circuit layer has a thickness of 5 μm to 300 μm.
8. The full-circumference LED bulb according to claim 7, wherein the wick and the heat sink are locked by screws, or locked by a snap, or screwed.
9. The full-circumference LED bulb of claim 8 wherein the wick is a flexible substrate.
10. The full-circumference LED bulb of claim 9 wherein the spray coating of the surface of the wick is sprayed from a selectable metallized powder coating.