CN202852485U - led light bulb - Google Patents

Abstract

The utility model discloses a LED bulb, which comprises a lamp body and a luminous component arranged in the lamp body, wherein the luminous component comprises a substrate frame and LED lamp beads, the substrate frame comprises a bottom substrate and a light source substrate, and the LED lamp beads are arranged on the light source substrate; the lamp body is made of copper or aluminum materials, the heat conduction structure which is integrally formed and manufactured is arranged in the lamp body, the heat conduction structure is provided with a clamping groove, the light source substrate is fixed in the clamping groove, the bottom substrate is completely attached to the bottom of the heat conduction structure, and the contact area between the bottom substrate and the lamp body is increased; the back or the lower tip of light source base plate and draw-in groove are laminated completely, have increased the area of contact of light source base plate and lamp body to very big improvement the heat conduction area of base plate frame and lamp body, make the heat conduction speed between base plate frame and the lamp body accelerate, thereby the radiating rate of whole lamp accelerates, can more effectual reduction LED junction temperature, prevent that LED lamp pearl is overheated, slow down the light decay, prolong the life of LED lamp pearl.

Description

led light bulb

technical field

The utility model relates to the field of LED lighting, in particular to an LED light bulb with good heat dissipation effect.

Background technique

At present, LED light sources are gradually replacing incandescent and fluorescent light sources with the characteristics of long life, no pollution, and high luminous efficiency. Therefore, LED bulbs using LEDs as light sources have appeared. LED bulbs generally include a lamp cap, a lamp body, a lampshade and an LED light source fixed in the lamp body. If the heat generated by the LED light source cannot be dissipated in time, the internal temperature of the lamp body will become higher and higher, which will not only accelerate the aging of the LED, but also shorten its life. The service life will cause the LED to burn out in severe cases. Therefore, the existing LED bulbs use the lamp body with high thermal conductivity to dissipate heat. However, the existing LED light source generally includes a substrate and LED lamp beads, and the contact area between the substrate and the lamp body is very small. Less, resulting in slow heat conduction between the substrate and the lamp body, resulting in poor heat dissipation, seriously affecting the service life and quality of use of the LED.

Therefore, how to increase the contact area between the substrate and the lamp body and improve the heat dissipation rate of the LED bulb is a technical problem to be solved urgently in the industry.

Contents of the invention

The main purpose of the utility model is to provide an LED light bulb, which aims to increase the contact area between the substrate and the lamp body, improve the heat dissipation speed of the LED light bulb, prevent the LED light beads from overheating, and prolong the service life of the LED light beads.

The utility model proposes an LED light bulb, which comprises a sequentially connected lamp cap, a lamp base, a lamp body, a lampshade and a light-emitting part arranged in the lamp body. The lamp body is a shell made of a heat-conducting material, and the light-emitting part includes an LED Lamp beads and a substrate frame, the substrate frame is composed of a bottom substrate and several light source substrates arranged on the bottom substrate, the LED lamp beads are respectively installed on the light source substrate, and the lamp body is provided with an upward convex The heat conduction structure is integrally formed with the lamp body; the heat conduction structure is provided with a card slot matching the light source substrate, and the card slot penetrates from the lower end of the heat conduction structure to the upper end It is provided that the light source substrate is bonded and fixed in the slot, the bottom substrate is bonded and fixed with the bottom of the heat conduction structure; the LED lamp bead is placed outside the heat conduction structure.

Preferably, the heat conduction structure includes an upper end part and a lower end part, the lower end part is a heat conduction plate adapted to the inner diameter of the lamp, the upper end part is a heat conduction block, and the heat conduction block is a cylinder, a cone, or a table body; the lower end of the slot is set on the heat conducting plate, and the upper end of the slot is set on the heat conducting block.

Preferably, the upper end portion of the card slot is disposed outside the heat conduction block.

Preferably, the light source substrate is a strip-shaped substrate, the light source substrate is snapped into the upper end part of the card slot from the lower end part of the card slot, and the LED lamp beads are installed on the light source substrate opposite to the card slot. On the opposite side of the upper part of the slot.

Preferably, the light source substrate is composed of two strip-shaped substrates with the same shape and size: the first strip-shaped substrate and the second strip-shaped substrate are connected back to back, and the LED lamp beads are respectively arranged on the first strip-shaped substrate. shaped substrate and the back surface of the second strip-shaped substrate; the height of the first strip-shaped substrate is higher than the heat conduction structure, and the lower end part of the first strip-shaped substrate is attached to the slot, so The upper end of the first strip-shaped substrate passes through the upper end of the card slot, and the LED lamp beads installed on the first strip-shaped substrate are placed on the upper end of the first strip-shaped substrate; The LED lamp beads on the two strip-shaped substrates are placed on the opposite surface of the second strip-shaped substrate to the upper end of the slot.

Preferably, the upper end portion of the card slot is disposed inside the heat conducting structure.

Preferably, the light source substrate is a strip-shaped substrate, the light source substrate is higher than the heat conducting structure, the lower end of the light source substrate is inserted into the slot, and the upper end of the light source substrate is inserted into the slot. The upper end passes through, and the LED lamp bead is installed on the upper end portion of the light source substrate.

Preferably, the light source substrate is composed of two strip-shaped substrates: the first strip-shaped substrate and the second strip-shaped substrate are bonded back to back, and the first strip-shaped substrate and the second strip-shaped substrate are both higher than the In the heat conduction structure, the lower end parts of the first strip-shaped substrate and the second strip-shaped substrate are snapped into the slot, and the upper end parts of the first strip-shaped substrate and the second strip-shaped substrate are pulled out from the card slot. The upper end of the groove passes through, and the LED lamp beads are respectively arranged on the back-facing surfaces of the upper end parts of the first strip-shaped substrate and the second strip-shaped substrate, and the first strip-shaped substrate and the second strip-shaped substrate The shapes and sizes of the substrates are the same or different.

Preferably, several heat dissipation grooves are longitudinally provided on the outer wall of the lamp, the lamp body is a metal shell made of copper or aluminum, and both the bottom substrate and the light source substrate are aluminum substrates with high thermal conductivity.

Preferably, an LED driver is connected and fixed on the lower surface of the bottom substrate, the light source substrate is fixed vertically or obliquely on the bottom substrate, and the bottom substrate and the light source substrate are welded or clamped. interconnected.

The substrate frame of the LED light bulb of the utility model includes a bottom substrate and a light source substrate arranged on the bottom substrate. The LED lamp beads are installed on the light source substrate. Fast conduction to the base substrate and source substrate. There is an integrated heat conduction structure in the lamp body, the lamp body is made of copper or aluminum material, the thermal conductivity is very high; the heat conduction structure is provided with a card slot matching the light source substrate, and the light source substrate is snapped in from the bottom of the heat conduction structure In the card slot, the light source substrate is fixed in the card slot, and the bottom substrate is completely attached to the bottom of the heat conduction structure, which increases the contact area between the bottom substrate and the lamp body; the back or lower end of the light source substrate is completely attached to the card slot, increasing The contact area between the light source substrate and the lamp body is enlarged, and the contact area between the substrate frame and the lamp body is increased by 8 times compared with the contact area between the substrate and the lamp body of the traditional LED bulb, thus greatly improving the contact area between the substrate frame and the lamp body The heat conduction area accelerates the heat conduction speed between the substrate frame and the lamp body, thereby accelerating the heat dissipation of the whole lamp, which can more effectively reduce the LED junction temperature, prevent the LED lamp beads from overheating, slow down the light decay, and prolong the use of the LED lamp beads life.

Description of drawings

Fig. 1 is the structural exploded schematic diagram of an embodiment of the utility model LED light bulb;

Fig. 2 is a perspective view of a light-emitting component in an embodiment of the LED light bulb of the present invention;

Fig. 3 is a perspective view of the lamp body in an embodiment of the LED light bulb of the present invention;

Fig. 4 is the front view of the lamp body in an embodiment of the LED light bulb of the present invention;

Fig. 5 is a front sectional view of the lamp body in an embodiment of the utility model LED light bulb;

Fig. 6 is a top view of the lamp body in an embodiment of the LED light bulb of the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1 to Fig. 6, an embodiment of the LED light bulb of the present invention is proposed, including a lamp cap 10, a lamp cap holder 100, a lamp body 40, a lampshade 50 and a light-emitting component 20 and an LED driver arranged in the lamp body 40 connected in sequence 30. The lamp base 100 is made of plastic, and the lamp base 100 is connected with the lamp base 10 through a threaded connection; the lamp body 40 is in the shape of a circular table, the lampshade 50 is in the shape of a candle, and one end of the lamp base 100 and the lamp body 40 is connected and fixed through a threaded connection The lampshade 50 is connected to the other end of the lamp body 40 through a threaded connection, which can facilitate the repeated installation and disassembly of the lamp cap 10, the lamp cap holder 100, the lamp body 40 and the lamp shade 50, thereby facilitating the internal components of the whole lamp The device is repaired. The light-emitting component 20 includes an LED lamp bead 201 and a substrate frame for installing the LED lamp bead 201. The substrate frame is composed of a bottom substrate 210 and three light source substrates 200 arranged on the bottom substrate 210. The bottom substrate 210 is circular in shape. The diameter is smaller than the inner diameter of the lamp body 40, and the bottom substrate 210 can pass through the lamp body 40; the light source substrate 200 is vertically arranged on the bottom substrate 210, and the light source substrate 200 can also be arranged obliquely relative to the bottom substrate 210; three light source substrates 200 surround the bottom substrate The center of 210 is evenly arranged, and the bottom substrate 210 and the light source substrate 200 are connected and fixed by welding; the bottom substrate 210 and the bar-shaped substrate are both high thermal conductivity aluminum substrates, with high thermal conductivity and fast heat conduction. The LED lamp beads 201 are respectively installed on the light source substrate 200, the LED driver 30 is connected and fixed on the lower end surface of the bottom substrate 210, the lampshade 50 is covered outside the light-emitting part 20, the LED driver 30 drives the LED lamp beads 201 to emit light, and the LED lamp beads 201 The emitted light is emitted through the lampshade 50 , and the light is soft; the heat generated by the LED lamp bead 201 is quickly transferred to the bottom substrate 210 and the light source substrate 200 .

In order to dissipate heat, the lamp body 40 is made of copper or aluminum with high thermal conductivity, and an upwardly protruding heat conduction structure 400 is provided inside the lamp body 40 . The heat conduction structure 400 includes an upper end part and a lower end part, the lower end part is a heat conduction plate 402 adapted to the inner diameter of the lamp body 40, the upper end part is a heat conduction block 401, and the heat conduction block 401 can be set as a cylinder, a cone, or a platform; the heat conduction structure 400 is provided with a card slot 403 that matches the light source substrate 200, and the card slot 403 is set through from the lower end of the heat conduction structure 400 to the upper end, and the lower end part of the card slot 403 is set on the heat conduction plate 402; block 401 and arranged outside the heat conduction block 401 . The light source substrate 200 slides from the lower end of the slot 403 into the upper end of the slot 403, and the light source substrate 200 is locked in the slot 403, and the bottom substrate 210 is fixed to the bottom surface of the heat conducting plate 402, so that the bottom substrate 210 and the heat conducting structure 400 are fully in contact, increasing the contact area between the bottom substrate 210 and the heat conduction structure 400 , thereby increasing the heat conduction speed between the bottom substrate 210 and the heat conduction structure 400 .

The light source substrate 200 is composed of two strip-shaped substrates: the first strip-shaped substrate 202 and the second strip-shaped substrate 203 are connected back to back, and the LED lamp beads 201 are respectively arranged on the first strip-shaped substrate 202 and the second strip-shaped substrate 203 On the opposite side, the front and rear sides of the light source substrate 200 emit light, which enhances the illuminance of the LED light bulb. The height of the first strip-shaped substrate 202 is higher than that of the heat-conducting structure 400, and the lower end of the first strip-shaped substrate 202 is attached to the slot 403, so that the first strip-shaped substrate 202 is fully in contact with the heat-conducting structure 400, thereby increasing the size of the light source substrate 200. contact area with the heat conduction structure 400, so that the heat conduction speed between the light source substrate 200 and the heat conduction structure 400 is accelerated; The LED lamp bead 201 is placed on the upper end portion of the first bar-shaped substrate 202, so that the LED lamp bead 201 is placed outside the heat conduction structure 400 to facilitate light emission. The second strip-shaped substrate 203 faces the outside of the heat conduction block 401, and the LED lamp beads 201 installed on the second strip-shaped substrate 203 are placed on the back-facing surface of the second strip-shaped substrate 203 relative to the upper end of the slot 403, so that the LED lamp beads 201 is placed outside the heat conduction structure 400 to facilitate light emission; the second strip-shaped substrate 203 has the same shape and size as the first strip-shaped substrate 202, and the second strip-shaped substrate 203 and the first strip-shaped substrate 202 are completely attached and connected, so that The contact area between the first strip-shaped substrate 202 and the second strip-shaped substrate 203 is maximized, thereby accelerating the heat conduction speed between the first strip-shaped substrate 202 and the second strip-shaped substrate 203 . Moreover, the lower end of the second strip-shaped substrate 203 is stuck in the lower end portion of the slot 403 and is in contact with the lower end portion of the slot 403, so that the heat generated by the LED light beads 201 on the second strip-shaped substrate 203 can be absorbed by the second strip-shaped substrate. 203 quickly conducts to the first strip-shaped substrate 202 and the heat-conducting plate 402, and the heat on the first strip-shaped substrate 202 quickly conducts to the heat-conducting structure 400, thus increasing the heat conduction speed between the entire light source substrate 200 and the heat-conducting structure 400, Moreover, the heat conduction speed between the bottom substrate 210 and the heat conduction structure 400 increases, so that the contact area between the entire substrate frame and the heat conduction structure 400 increases, and the heat conduction speed increases. The heat conduction structure 400 and the lamp body 40 are integrally formed, thereby increasing the contact area between the substrate frame and the lamp body 40, making the contact area between the substrate frame and the lamp body 40 smaller than that of the substrate of the traditional LED light bulb and the lamp body 40. The area is increased by 8 times, thereby greatly improving the heat conduction area of the substrate frame and the lamp body 40, and accelerating the heat conduction speed between the substrate frame and the lamp body 40; in addition, the lamp body 40 is made of copper or aluminum material, and the thermal conductivity Very high, a number of heat dissipation grooves 410 are longitudinally arranged on the outer wall of the lamp body 40. The heat dissipation grooves 410 increase the contact area of the lamp body 40 with the external air, which can accelerate the heat dissipation speed of the lamp body 40, thereby improving the heat dissipation speed of the whole lamp. Speeding up can reduce the LED junction temperature more effectively, prevent the LED lamp bead 201 from overheating, slow down the light decay, and prolong the service life of the LED lamp bead 201.

In addition, the light source substrate 200 can also be a single strip-shaped substrate. Inserted into the upper part of the card slot 403, the strip-shaped substrate is fitted and fixed in the card slot 403, and the LED lamp bead 201 is installed on the back surface of the light source substrate 200 relative to the upper end of the card slot 403, so that the LED lamp bead 201 is placed on the heat conduction block The outside of 401 is good for light emission. The strip-shaped substrate is fully in contact with the slot 403 , which increases the contact area between the light source substrate 200 and the heat conduction structure 400 .

The second embodiment of the LED light bulb of the present invention is also proposed. This embodiment is basically the same as the first embodiment. The main difference is that the upper part of the card slot is arranged inside the heat conduction structure, and the light source substrate consists of two strip substrates. : The first strip-shaped substrate and the second strip-shaped substrate are back-to-back, the first strip-shaped substrate and the second strip-shaped substrate are higher than the heat conduction structure, and the lower ends of the first strip-shaped substrate and the second strip-shaped substrate are stuck into the card slot to increase the contact area between the first line substrate, the second line substrate and the heat conduction structure, thereby increasing the heat conduction speed between the light source substrate and the heat conduction structure; the first strip substrate and the second strip substrate The upper part of the strip-shaped substrate passes through the upper end of the card slot, and the LED lamp beads are respectively arranged on the back surfaces of the upper end parts of the first strip-shaped substrate and the second strip-shaped substrate, so that the LED lamp beads are placed outside the heat-conducting structure, which is beneficial to The LED lamp beads emit light; the bottom substrate and the bottom surface of the heat conduction plate are bonded and fixed, so that the bottom substrate and the heat conduction structure are fully in contact, and the contact area between the bottom substrate and the heat conduction structure is increased, thereby increasing the heat conduction speed between the bottom substrate and the heat conduction structure. The effect of this embodiment is basically the same as that of the first embodiment.

In addition, the light source substrate can also be a single strip-shaped substrate, the light source substrate is higher than the heat conduction structure, the lower end of the light source substrate is inserted into the slot, the upper end of the light source substrate passes through the upper end of the slot, and the LED lamp beads are installed on the light source substrate the upper part of.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. An LED light bulb, comprising a sequentially connected lamp cap, a lamp cap holder, a lamp body, a lampshade and a light-emitting part arranged in the lamp body, the lamp body is a shell made of a heat-conducting material, and the light-emitting part includes an LED lamp bead and a substrate frame, the substrate frame is composed of a bottom substrate and several light source substrates arranged on the bottom substrate, the LED lamp beads are installed on the light source substrate respectively, and it is characterized in that, the lamp body is provided with An upwardly protruding heat conduction structure, the heat conduction structure is integrally formed with the lamp body; the heat conduction structure is provided with a card slot matching the light source substrate, and the card slot is upward from the lower end of the heat conduction structure The end is set through, the light source substrate is attached and fixed in the slot, the bottom substrate is attached and fixed to the bottom of the heat conduction structure; the LED lamp bead is placed outside the heat conduction structure. 2. The LED light bulb according to claim 1, wherein the heat conduction structure comprises an upper end part and a lower end part, the lower end part is a heat conduction plate adapted to the inner diameter of the lamp, and the upper end part is a heat conduction plate The heat conduction block is a cylinder, a cone, or a platform; the lower end of the card slot is set on the heat conduction plate, and the upper end of the draw slot is set on the heat conduction block. 3. The LED bulb according to claim 2, characterized in that, the upper end of the slot is arranged outside the heat conducting block. 4. The LED light bulb according to claim 3, wherein the light source substrate is a strip-shaped substrate, and the light source substrate is snapped into the upper end portion of the slot from the lower end portion of the slot, the The LED lamp bead is installed on the back surface of the light source substrate opposite to the upper end portion of the slot. 5. The LED light bulb according to claim 3, wherein the light source substrate is composed of two strip-shaped substrates with the same shape and size: the first strip-shaped substrate and the second strip-shaped substrate are connected back to back, The LED lamp beads are respectively arranged on the back surfaces of the first strip-shaped substrate and the second strip-shaped substrate; the height of the first strip-shaped substrate is higher than the heat conducting structure, and the first strip-shaped substrate The lower end of the substrate is attached to the slot, the upper end of the first strip-shaped substrate passes through the upper end of the slot, and the LED lamp beads installed on the first strip-shaped substrate are placed on the first strip-shaped substrate. The upper end portion of the strip-shaped substrate; the LED light beads installed on the second strip-shaped substrate are placed on the opposite surface of the second strip-shaped substrate to the upper end portion of the slot. 6 . The LED light bulb according to claim 2 , wherein the upper end of the slot is disposed inside the heat conducting structure. 7 . 7. The LED light bulb according to claim 6, wherein the light source substrate is a strip-shaped substrate, the light source substrate is higher than the heat conduction structure, and the lower end of the light source substrate is snapped into the slot , the upper end of the light source substrate passes through the upper end of the slot, and the LED lamp bead is installed on the upper end of the light source substrate. 8. The LED light bulb according to claim 6, wherein the light source substrate is composed of two strip-shaped substrates: the first strip-shaped substrate and the second strip-shaped substrate are back-to-back bonded, and the first strip-shaped substrate Both the substrate and the second strip-shaped substrate are higher than the heat-conducting structure, the lower ends of the first strip-shaped substrate and the second strip-shaped substrate are snapped into the slots, and the first strip-shaped substrate and the second strip-shaped substrate are The upper end portion of the second strip-shaped substrate passes through the upper end of the card slot, and the LED lamp beads are respectively arranged on the opposite surfaces of the upper end portions of the first strip-shaped substrate and the second strip-shaped substrate; The shape and size of the first strip-shaped substrate and the second strip-shaped substrate are the same or different. 9. The LED light bulb according to any one of claims 1 to 8, wherein a plurality of cooling grooves are longitudinally arranged on the outer wall of the lamp, and the lamp body is a metal shell made of copper or aluminum , both the bottom substrate and the light source substrate are aluminum substrates with high thermal conductivity. 10. The LED light bulb according to any one of claims 1 to 8, wherein an LED driver is connected and fixed on the lower end surface of the bottom substrate, and the light source substrate is vertically or obliquely fixed on the bottom substrate On the other hand, the bottom substrate and the light source substrate are connected to each other by welding or clamping.

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