CN103234132A - A kind of LED bulb lamp - Google Patents

Abstract

The radiating shell in the LED bulb lamp comprises a hollow annular fin group formed by at least 3 fins which are uniformly distributed on the circumference and arranged at intervals, and a first port and a second port which extend from two ends of the radiating shell; the first annular guide rail in the lamp holder mounting seat and the second annular guide rail in the lampshade mounting seat are respectively sleeved with the first annular guide rail and the second annular guide rail through the first ball and the second ball, so that the heat dissipation shell rotates along the lamp holder mounting seat and the lampshade mounting seat. In the working process of the LED bulb lamp, air in the radiating shell is heated by the LED chip, hot air rises, the radiating shell group can be pushed to rotate along the first annular guide rail and the second annular guide rail by utilizing the air heat convection principle, the air flowing speed is accelerated, natural radiating and air-cooled forced radiating are combined, and the radiating effect is enhanced. Gaps are reserved between adjacent fins of the annular fin group, so that the heat dissipation shell is of an open structure, and heat can be dissipated conveniently.

Description

A kind of LED bulb lamp

technical field

The invention belongs to the technical field of LED lighting, and in particular relates to an LED bulb lamp.

Background technique

LED (full name in English: Light Emitting Diode, translated as: Light Emitting Diode) is a solid semiconductor device that can directly convert electrical energy into light energy. As a light source, LED has the characteristics of short lighting delay, wide color temperature range, high luminous intensity, high luminous efficiency, and good shock resistance.

The LED lamp with LED as the light source has a domestic standard life span of 60,000 to 100,000 hours, which is much higher than the 8,000 hours of ordinary energy-saving lamps. Therefore, LED lamps, especially high-power LED lamps, have begun to appear in various occasions as substitutes for incandescent lamps and energy-saving lamps.

When the LED is on, except for the electricity consumed as visible light, the other electricity is converted into heat energy. However, due to the small package area of the LED, the heat dissipation through convection and radiation is less, thus generating extremely high heat in a very small volume. , and the heat resistance of LED is very poor, a large amount of heat accumulation will cause the deterioration of the chip, which seriously affects the luminous performance and service life of the LED lamp. Therefore, good heat dissipation performance is the guarantee of the excellent performance of the LED lamp.

For commercialized LEDs, since the primary heat dissipation design of the chip package has been fixed, it cannot be changed during use. Therefore, when used as a light source, it is necessary to design the secondary heat dissipation scheme according to the actual working conditions and working conditions on site.

The design of the secondary heat dissipation scheme in the prior art mainly adopts two kinds of natural heat dissipation by the LED lamp housing or heat conducting sheet and heat dissipation by using a heat sink. The heat dissipation effect of the natural heat dissipation scheme of the shell is limited, and it is mainly suitable for low-power LED lights. The heat dissipation effect of LED lamps using radiators is better. The radiator structures suitable for LED lamps include fans, heat pipes, vapor chambers, micro-channel heat sinks, and semiconductor cooling radiators.

The heat pipes, vapor chambers, microchannel heat sinks, and semiconductor refrigeration radiators in the above-mentioned secondary heat dissipation schemes have complex manufacturing processes and high precision requirements, and are rarely used in LED lamps. In the prior art, the LED lamp housing or heat conduction The natural heat dissipation of the chip and the heat dissipation of the fan are mainly used.

Chinese patent CN201401764Y discloses a high-power LED lamp structure with a fan, including a high-power LED illuminant, a metal substrate for fixing the high-power LED illuminant, and a radiator connected to the metal substrate, the metal substrate is arranged on the radiator The front end of the heat sink is a tubular body with a hollow lumen, at least one heat dissipation air outlet is arranged on the inner wall of the cavity, and the fan is fixed at the center of the tail end of the heat sink. Wherein the outer ring of the radiator is provided with several cooling fins. The LED lamp disclosed in this patent separates the heat conduction structure and the heat dissipation structure, and the number of components is large and the structure is complicated; firstly, a metal substrate and a heat sink connected to the metal substrate are used to conduct the heat of the LED illuminant, in order to increase the heat conduction area , the designed cooling body with cavity fin structure has a large volume, complex structure and manufacturing process; and the fan arranged at the tail end of the cooling body is used to force air cooling to dissipate the heat. Moreover, the heat dissipation structure is equipped with a fan, which consumes a lot of power, and is only suitable for LED lamps with high-power LEDs. If it is used in LED lamps with medium and low power, the luminous efficiency will be reduced to a certain extent.

Contents of the invention

Therefore, what the present invention aims to solve is the technical problem of the complex heat dissipation structure of the LED bulb lamp in the prior art, and provides an LED bulb lamp with a simple structure and good heat dissipation effect.

In order to solve the problems of the technologies described above, the technical scheme adopted in the present invention is as follows:

An LED bulb lamp according to the present invention comprises a heat dissipation housing 1, a lamp cap mounting seat 2, a lampshade mounting seat 3, a lamp cap 4 fixed to the lower end of the lamp cap mounting seat 2 by fastening components, a chip support 5, a set The lampshade 6 on the lampshade mount 3 is fastened to the lampshade mount 3 by the screw 52 and the screw hole 33 provided on the lampshade mount 3 with the chip holder 5 provided with the LED chip 51 close to the lampshade mount 3. One side of the lampshade 6; the heat dissipation housing 1 further includes a hollow annular fin group composed of at least 3 fins 11 evenly distributed on the circumference and arranged at intervals, extending from both ends of the heat dissipation housing 1 The first port 13 and the second port 14; the lamp cap mount 2 includes a first annular guide rail 22, the lampshade mount 3 includes a second annular guide rail 32, and the first port 13 and the second port 14 pass through the first ball respectively. 21. The second ball 31 fits with the first circular guide rail 22 and the second circular guide rail 33 , so that the heat dissipation housing 1 can rotate along the lamp cap mounting base 2 and the lampshade mounting base 3 .

The inner edge of the first port 13 is provided with a motor transmission part 12 for connecting a motor rotor.

The ratio of the inner diameter of the first annular guide rail 22 to the height of the heat dissipation housing 1 is 1:1-1:5.

The inner diameter of the first annular guide rail 22 is smaller than or equal to the inner diameter of the second annular guide rail 32 .

The blade part of the fin 11 protrudes into the interior of the annular fin set 1 .

The fins 11 are arranged obliquely relative to the axis of the annular fin group.

The aspect ratio of the fins 11 is 3:1˜11:1.

The aspect ratio of the fins 11 is preferably 4:1˜8:1.

The heat dissipation housing 1 , the lamp cap mount 2 , the lampshade mount 3 , the chip holder 5 , the first ball 21 and the second ball 31 are metal parts.

The metal is aluminum.

The above technical solution of the present invention has the following advantages compared with the prior art:

1. The structure of the LED bulb lamp of the present invention is relatively simple, wherein the heat dissipation housing 1 includes a hollow annular fin group composed of at least 3 fins 11 distributed on the circumference at intervals. The first port 13 and the second port 14 extending from both ends; the lamp holder 2 includes a first annular guide rail 22, the lampshade installation seat 3 includes a second annular guide rail 32, the first port 13, the second port 14 The first balls 21 and the second balls 31 fit into the first circular guide rail 22 and the second circular guide rail 32 respectively, so that the heat dissipation housing 1 is installed along the lamp holder mounting base 2 and the lampshade The seat 3 rotates; the LED chip holder 5 is fastened to the inner edge of the second annular guide rail 32 by screws 52, which can effectively lead out the heat emitted by the LED chip 51 and increase the natural heat dissipation function. During the working process of the LED bulb lamp, the air inside the heat dissipation housing 1 is heated by the LED chip, and the hot air rises, and the ring-shaped fin group can be pushed along the first ring-shaped guide rail 22 and the second ring-shaped guide rail 22 by using the principle of air thermal convection. The two annular guide rails 32 rotate to act as a fan, so that the heat conduction and heat dissipation structures are combined to enhance the heat dissipation effect, and the structure is simpler and more compact. The annular fin group is composed of at least three fins 11 equally distributed on the circumference, that is, there are gaps between the adjacent fins 11, so that the heat dissipation housing 1 is an open structure, which is more convenient The heat escapes.

2. In the LED bulb lamp according to the present invention, the inner edge of the first port 13 is provided with a motor transmission part 12 for connecting the motor rotor. If the LED power is relatively large, the motor can be installed in the lamp holder 2. Through the transmission of the motor transmission part 12, the speed of the heat dissipation housing 1 is accelerated to enhance the heat dissipation effect, so that the heat dissipation housing is suitable for high-power LED lights and has a wide range of applications; and the motor is small in size, which can effectively reduce the heat dissipation. The volume of the LED bulb lamp is small.

3. In the LED bulb lamp according to the present invention, the ratio of the inner diameter of the first annular guide rail 22 to the height of the heat dissipation shell 1 is 1:1 to 1:5, and the first annular guide rail 22 The inner diameter of the heat dissipation housing 1 is smaller than or equal to the inner diameter of the second annular guide rail 32, and the structure of the heat dissipation housing 1 is more convenient for air convection, so that the heat dissipation housing 1 is easier to rotate.

4. In the LED bulb lamp according to the present invention, the blade part of the fin 11 protrudes into the interior of the heat dissipation shell 1, so that the outer surface of the heat dissipation shell 1 is a smooth curved surface; The fins 11 are arranged obliquely with respect to the axis of the annular fin group, so that the fin group is in the shape of a turbine, which is easier to rotate under the action of air convection, and this structure makes the structure of the housing more compact, while ensuring effective heat dissipation , reducing the volume of the heat dissipation housing 1 .

5. In the LED bulb lamp of the present invention, the aspect ratio of the fins 11 is 3:1 to 11:1, preferably 4:1 to 8:1. While ensuring the effect of air cooling and heat dissipation, it is effective A larger heat dissipation area is ensured, and the heat dissipation performance of the housing is enhanced.

6. An LED bulb lamp according to the present invention, the heat dissipation housing 1, the lamp cap mount 2, the lampshade mount 3, the chip holder 5, the first ball 21, the The second balls 31 are metal components, preferably aluminum components, which have good heat conduction effect and low raw material cost.

Description of drawings

In order to make the content of the present invention more easily understood, the present invention will be described in further detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

Fig. 1 is a schematic structural view of a bulb lamp provided by an embodiment of the present invention;

Fig. 2 is the structural representation of fin described in Fig. 1;

Figure 3 is a schematic structural view of the fins in other embodiments of the present invention;

The reference numerals in the figure are represented as: 1-radiating shell, 11-fin, 111-installation hole, 12-motor transmission part, 13-first port, 14-second port, 2-lamp base mounting seat, 21- The first ball, 22-the first guide rail, 23-air inlet, 3-lamp shade mounting seat, 31-the second ball, 32-the second guide rail, 33-screw hole, 4-lamp holder, 5-chip holder, 51-LED Chip, 52-screw, 6-shade.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

An LED bulb lamp described in this embodiment, as shown in FIG. 1 , includes a heat dissipation shell 1, a lamp cap mounting seat 2, a lampshade mounting seat 3, and a lamp cap fixed at the lower end of the lamp cap mounting seat 2 by fastening components. 4. The chip holder 5, the lampshade 6 arranged on the lampshade mount 3, the chip holder 5 provided with the LED chip 51 is fastened to the lampshade mount 3 through the screw 52 and the screw hole 33 arranged on the lampshade mount 3 The lampshade mounting seat 3 is close to the side of the lampshade 6 .

In this embodiment, the lamp cap 4 is fixed on the lower end of the lamp cap mounting seat 2 by screws. As an alternative embodiment, the lamp cap 4 can also be fixed on the lower end of the lamp cap mounting seat 2 by gluing or snapping.

In this embodiment, the lampshade 6 is fastened to one end of the lampshade mounting seat 3 through external threads. As an alternative embodiment, the lampshade 6 can also be fixed to one end of the lampshade mounting seat 3 by gluing or snapping.

In this embodiment, the heat dissipation housing 1 includes a hollow annular fin group composed of 32 fins 11 evenly distributed on the circumference, and the first port 13 extending from both ends of the heat dissipation housing 1 and The second port 14; the lamp cap mount 2 includes a first annular guide rail 22, the lampshade mount 3 includes a second annular guide rail 32, and the first port 13 and the second port 14 pass through the first ball 21 and the second ball respectively. 31 fits with the first circular guide rail 22 and the second circular guide rail 32 , so that the heat dissipation housing 1 can rotate along the lamp cap mounting base 2 and the lampshade mounting base 3 . During the working process of the LED bulb lamp, the air inside the heat dissipation housing 1 is heated by the LED chip, and the hot air rises. Using the principle of air thermal convection, when the hot air radiates outward, it passes through the first ball 21 and the second ball 31. The sliding effect can push the ring-shaped fin group to rotate along the first ring-shaped guide rail 22 and the second ring-shaped guide rail 32, and play the role of a fan, so that the combination of heat conduction and heat dissipation with air-cooled forced heat dissipation enhances heat dissipation Effect. The lamp holder 2 is also provided with an air inlet 23 for replenishing cold air. The annular fin group is composed of fins 11 evenly distributed on the circumference, that is, there is a gap of a fin thickness between adjacent fins 11, so that the heat dissipation housing 1 is an open structure, Easier to dissipate heat.

In other embodiments of the present invention, the ring-shaped fin group is composed of at least three fins 11 evenly distributed on the circumference and arranged at intervals, and there is a certain gap between adjacent fins 11, all of which can achieve the purpose of the present invention , belong to the protection scope of the present invention.

The structure of the fins 11 in this embodiment is as the curved surface structure shown in Figure 2, and the two ends of the fins 11 are provided with mounting holes 111, so that the fins 11 can be installed to form an annular fin group; All the fins 11 in the fin group are inclined in the same direction relative to the axis of the annular fin group or arranged in a helical line relative to the axis of the annular fin group 1, so that the fin group is in the shape of a turbine, and it is easier to Rotation under the action of air convection, and this structure makes the structure of the housing more compact, while ensuring effective heat dissipation, the volume of the heat dissipation housing 1 is reduced. In other embodiments of the present invention, the structure of the fins 11 can also be a curved surface structure as shown in Figure 3. At this time, the shape of the annular fin group is a hollow cylinder, which can realize the Purpose, belongs to the protection scope of the present invention.

The inner edge of the first port 13 is provided with a motor transmission device 12. If the power of the LED is large, a motor can be installed in the lamp holder 2, and the speed of the heat dissipation housing 1 can be accelerated through the transmission of the motor transmission part 12. In order to enhance the heat dissipation effect, the heat dissipation housing is suitable for high-power LED lamps and has a wide range of applications; the LED chip support 5 is fastened to the inner edge of the second annular guide rail 32 by screws 52, which can effectively hold the LED The heat emitted by the chip 51 is effectively transferred to the heat dissipation housing 1, which increases the heat conduction and heat dissipation function.

In this embodiment, the ratio of the inner diameter of the first annular guide rail 22 to the height of the annular fin group 1 is 1:2, and the inner diameter of the first annular guide rail 22 and the inner diameter of the second annular guide rail 32 The ratio is 1:1.2. In other embodiments of the present invention, the ratio of the inner diameter of the first annular guide rail 22 to the height of the annular fin group is 1:1 to 1:5, and the inner diameter of the first annular guide rail 22 is smaller than or equal to the The inner diameter of the second annular guide rail 32; the bell-shaped or cylindrical structure brought by this ratio is more convenient for air convection, making the heat dissipation housing 1 easier to rotate. Therefore, these embodiments can all achieve the purpose of the present invention and belong to protection scope of the present invention.

The blade part of the fin 11 in this embodiment extends into the interior of the heat dissipation housing 1, so that the outer surface of the heat dissipation housing 1 is a smooth curved surface, making the structure of the housing more compact, and ensuring effective heat dissipation. At the same time, the volume of the heat dissipation housing 1 is reduced.

The aspect ratio of the fins 11 in this embodiment is 5:1, which maximizes the effective heat dissipation area of the fins 11 while ensuring the effect of air cooling and heat dissipation, thereby enhancing the heat dissipation performance of the housing. In other embodiments of the present invention, the aspect ratio of the fins 11 is 3:1-11:1, all of which can achieve the purpose of the present invention and belong to the protection scope of the present invention.

In the LED bulb lamp described in this embodiment, the heat dissipation housing 1, the lamp holder mounting seat 2, the lampshade mounting seat 3, the chip holder 5, the first ball 21, the second The two balls 31 are metal parts, preferably aluminum parts, which have good heat conduction effect and low raw material cost.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived therefrom still fall within the scope of protection of the present invention.

Claims (10)

1. LED bulb lamp, comprise radiating shell (1), lamp holder mount pad (2), lampshade mount pad (3), by secure component be fixed on described lamp holder mount pad (2) lower end lamp holder (4), chip set (5), be arranged on the lampshade (6) on the described lampshade mount pad (3), by screw (52) be arranged on the chip set (5) that screw (33) on the described lampshade mount pad (3) will be provided with led chip (51) and be anchored on described lampshade mount pad (3) near a side of described lampshade (6); It is characterized in that: described radiating shell (1) further comprises the hollow ring fins set that is intervally arranged and forms by at equally distributed at least 3 fins of circumference (11), from described radiating shell (1) extended first ports in two ends (13) and second port (14); Described lamp holder mount pad (2) comprises first ring-shaped guide rail (22), lampshade mount pad (3) comprises second ring-shaped guide rail (32), described first port (13), second port (14) make described radiating shell (1) to rotate along described lamp holder mount pad (2) and described lampshade mount pad (3) respectively by first ball (21), second ball (31) and described first ring-shaped guide rail (22) and described second ring-shaped guide rail (33) phase fit.

2. LED bulb lamp according to claim 1 is characterized in that: described first port (13) inner edge is provided with for the motor attaching parts (12) that connect rotor.

3. LED bulb lamp according to claim 1 and 2, it is characterized in that: the ratio of the height of the internal diameter of described first ring-shaped guide rail (22) and described radiating shell (1) is 1:1～1:5.

4. according to the arbitrary described LED bulb lamp of claim 1-3, it is characterized in that: the internal diameter of described first ring-shaped guide rail (22) is less than or equal to the internal diameter of described second ring-shaped guide rail (32).

5. according to the arbitrary described LED bulb lamp of claim 1-4, it is characterized in that: the blade-section of described fin (11) stretches into the inside of described ring fin group (1).

6. according to the arbitrary described LED bulb lamp of claim 1-5, it is characterized in that: described fin (11) is obliquely installed with respect to the axis of described ring fin group.

7. according to the arbitrary described LED bulb lamp of claim 1-6, it is characterized in that: described fin (11) length-width ratio is 3:1～11:1.

8. LED bulb lamp according to claim 7, it is characterized in that: described fin (11) length-width ratio is 4:1～8:1.

9. according to the arbitrary described LED bulb lamp of claim 1-8, it is characterized in that: described radiating shell (1), described lamp holder mount pad (2), described lampshade mount pad (3), described chip set (5), described first ball (21), described second ball (31) are the metal member made.

10. LED bulb lamp according to claim 9, it is characterized in that: described metal is aluminium.

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