CN212132068U - Lamp fitting - Google Patents

Abstract

The application provides a lamp, which includes a lamp housing, a base plate, a light-emitting unit, a light bulb driver, a radiator, a lamp shade and a heat insulation cabin, wherein the lamp housing is provided with a heat insulation cabin. In the lamp, the radiator is arranged between the lamp housing and the base plate, the radiator is provided with a cavity and a first airflow channel communicating with the cavity, and the lamp housing is provided with a first heat dissipation hole communicating with the cavity, A second heat dissipation hole is arranged on the side of the lamp housing, a second air flow channel is formed between the outer side of the heat insulation cabin and the inner peripheral surface of the lamp housing, and the second air flow channel is communicated with the first heat dissipation hole and the second heat dissipation hole respectively. The first air flow channel, the cavity, the first heat dissipation hole, the second air flow channel and the second heat dissipation hole are connected in sequence to form a first heat dissipation channel for circulating and convection of air flow. Then, when the lamp works, the heat generated by the light-emitting unit is dissipated through the radiator, and the cold air around the lamp will also form air convection in the first heat dissipation channel, so as to achieve the convection heat dissipation effect of ventilation and ventilation.

Description

lamps

technical field

The present application belongs to the technical field of lighting, and more specifically, relates to a lamp.

Background technique

With the wide application of light-emitting diode (LED, English abbreviation for Light Emitting Diode) lighting technology, LED bulbs have gradually become a new type of energy-saving lamps to replace traditional incandescent bulbs. The current LED bulbs generally rely on the openings of the casing to dissipate the heat generated during lighting work, but they have the problems of low heat dissipation efficiency and poor heat dissipation effect, resulting in the internal power supply and light source of the LED bulbs. The heat is difficult to dissipate in time and quickly, which may easily cause the temperature of the LED bulb to rise sharply, cause the LED to produce light failure, shorten the service life of the LED bulb, and even cause the internal electronic components of the LED bulb to be burned and damaged. , which seriously affects the safety and reliability of lamps and lanterns.

Utility model content

The purpose of the embodiments of the present application is to provide a lamp to solve the technical problem of the low heat dissipation efficiency and poor heat dissipation effect of the bulb lamp in the prior art, which makes the heat inside the bulb lamp difficult to dissipate in time and quickly. .

In order to achieve the above purpose, the technical solution adopted in this application is to provide a lamp, including:

The lamp housing is provided with an accommodating cavity;

a base plate with a light-emitting unit;

a bulb driver, controlling the light-emitting unit to emit light;

a heat sink, connected to the lamp housing and disposed between the lamp housing and the base plate, for dissipating the heat generated when the light-emitting unit works;

a lamp cover, disposed on the side of the base plate away from the lamp housing, for covering the light-emitting units on the base plate; and

a heat insulation cabin, arranged in the accommodating cavity, for placing the bulb driver in isolation;

Wherein, the side of the radiator facing the lamp housing is provided with a cavity, the radiator is provided with a first airflow channel for convection between the air inside the cavity and the external air, and the lamp housing is provided with a first heat dissipation hole for convection between the air inside the cavity and the air in the accommodating cavity, and a second heat dissipation hole for convection between the air inside the accommodating cavity and the outside air on the side of the lamp housing; the A second airflow channel for air to pass through is formed between the outer surface of the heat insulation cabin and the inner peripheral surface of the lamp housing, and the second airflow channel is communicated with the first heat dissipation hole and the second heat dissipation hole respectively. , and a third heat dissipation hole is opened on the side of the heat insulation cabin for the heat inside the heat insulation cabin to be discharged.

Optionally, the heat sink includes a heat dissipation base and a plurality of heat dissipation members supported and fixed on the heat dissipation base, and a plurality of the heat dissipation members are arranged at intervals along the circumference of the heat dissipation base to be on the heat dissipation base. The cavity is formed on one side of the seat, the first airflow channel is formed by the gap between two adjacent heat sinks, the lamp housing is connected with the heat sink, and the lamp cover is arranged on the heat sink. On the side of the base away from the lamp housing, the heat dissipation base is provided with a first wire hole, a second wire hole is correspondingly opened on the lamp housing, and a second wire hole is correspondingly provided on the heat insulation cabin. Three wire holes.

Optionally, the heat sink includes two fins arranged in pairs and connected to each other, and the included angle between the two fins is an acute angle; or, the heat sink is a "V"-shaped heat sink in cross section or, the heat dissipation member is a heat dissipation fin with a “U” shape in cross section.

Optionally, the heat dissipation base is a heat dissipation plate, the heat dissipation plate is connected to the lampshade, a plurality of the heat dissipation members are protruded on the side of the heat dissipation plate away from the lampshade, and a plurality of the heat dissipation members are provided. The radiators are arranged at intervals along the circumferential direction of the radiator to form the cavity on the side of the radiator that is away from the lampshade. The other end of the heat-conducting column is in contact with the lamp housing, and the portion inside the cavity outside the heat-conducting column forms an annular convection cavity.

Optionally, the lamp further comprises a ring-shaped lamp socket connected to one end of the lamp housing facing away from the radiator, and the ring-shaped lamp socket is covered on the side of the thermal insulation cabin facing away from the radiator. On the opening at one end, the annular hole of the annular lamp holder forms a fourth wire hole, and the annular lamp holder is provided with a fourth heat dissipation hole for convection between the air inside the heat insulation cabin and the outside air.

Optionally, the lamp housing includes a metal shell and a metal cover plate which is covered and fixed on an opening of the metal shell close to one end of the heat sink, the heat sink abuts against the metal cover plate, The first heat dissipation hole is provided on the metal cover plate, the second heat dissipation hole is provided on the side surface of the metal casing, and the metal cover plate is provided with a second wire hole.

Optionally, the lamp further includes a ring-shaped lamp holder covered on the opening of the end of the metal shell facing away from the heat sink, the ring hole of the ring-shaped lamp holder forms a fifth wire hole, and the ring-shaped lamp holder forms a fifth wire hole. The lamp socket is provided with a fifth heat dissipation hole for convection between the air inside the metal shell and the outside air.

Optionally, the substrate is a metal plate, and one side of the metal plate is attached to the side of the heat sink facing away from the lamp housing.

Optionally, the second heat dissipation hole is an elongated hole, and the elongated hole is extended along the height direction of the lamp housing.

Optionally, the number of the second heat dissipation holes is set to be multiple, and the plurality of the second heat dissipation holes are distributed at equal intervals along the circumferential direction of the lamp housing.

Compared with the prior art, the above-mentioned one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

In the lamps provided by the embodiments of the present application, the radiator is arranged between the lamp housing and the substrate, a heat insulating cabin is arranged in the lamp housing, a cavity is arranged on the side of the radiator facing the lamp housing, and a communication is provided on the lamp housing. The first heat dissipation hole of the cavity, the second heat dissipation hole is opened on the side of the lamp housing, the radiator is provided with a first air flow channel, and the second air flow is formed between the outer side surface of the heat insulation cabin and the inner peripheral surface of the lamp housing The second airflow channel is respectively communicated with the first heat dissipation hole and the second heat dissipation hole, so that the first airflow channel, the cavity, the first heat dissipation hole, the second airflow channel and the second heat dissipation hole are connected in sequence to form a circulating convection of air supply. the first cooling channel. When the lamp works, a larger part of the heat generated by the light-emitting unit can be dissipated through the radiator, while a smaller part of the heat is transferred to the lamp housing through the radiator for heat dissipation. At the same time, the cold air around the lamp will form air convection in the first heat dissipation channel, and the convection air will absorb and quickly take away the heat inside the lamp housing, so that the heat in the lamp housing can be quickly and efficiently dissipated, and the heat dissipation effect Good, high heat dissipation efficiency. In addition, a third heat dissipation hole communicated with the accommodating cavity of the lamp housing is opened on the side of the heat insulation cabin, so that the heat generated by the bulb driver in the heat insulation cabin can be discharged in time. In this way, the heat generated when the light-emitting unit is working can be dissipated in a timely, fast and efficient manner, and the lamp housing can be ventilated and ventilated to achieve convection heat dissipation, so that the light-emitting unit and the light bulb driver can operate in a lower temperature environment. It ensures the safety and reliability of the lamps and prolongs the service life of the lamps.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present application. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic three-dimensional structure diagram of a lamp provided in Embodiment 1 of the present application;

2 is an exploded view of the lamp provided in Embodiment 1 of the present application;

FIG. 3 is a schematic structural diagram of a heat sink assembled between the lamp housing and the substrate according to the first embodiment of the application;

FIG. 4 is a schematic three-dimensional structural diagram of a heat sink provided in Embodiment 1 of the present application;

FIG. 5 is a schematic structural diagram 1 of a ring-shaped lamp holder provided on the thermal insulation cabin provided in the first embodiment of the application;

FIG. 6 is a schematic structural diagram 2 of a ring-shaped lamp holder provided on the thermal insulation cabin provided in the first embodiment of the present application;

7 is a schematic structural diagram of a lamp housing provided with a ring-shaped lamp holder provided in Embodiment 2 of the present application;

FIG. 8 is an exploded view of the lamp housing and the annular lamp socket in FIG. 7 .

Among them, each reference sign in the figure:

1-lamp housing; 11-second wire hole; 12-first heat dissipation hole; 13-second heat dissipation hole; 14-metal shell; 15-metal cover plate;

2-substrate;

3-radiator; 31-radiation base; 32-radiator; 321-radiator; 33-first airflow channel; 34-cavity; 35-thermal column; 36-first wire hole;

4- lampshade;

5-Insulation cabin; 51-Third wire hole; 52-Third cooling hole;

6-ring lamp holder; 61- fourth wire hole; 62- fourth heat dissipation hole; 63- fifth wire hole; 64- fifth heat dissipation hole.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection or indirect connection through an intermediate medium, may be internal communication between two elements or an interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the application and simplifying the description, rather than indicating or implying the indicated A device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

Please refer to FIG. 1 to FIG. 4 together, and now the lamps provided by the embodiments of the present application will be described. The lamps provided in the embodiments of the present application include, but are not limited to, bulb lamps. The lamps include a lamp housing 1, a substrate 2, a light-emitting unit (not shown in the figure), a light bulb driver (not shown in the figure), a heat sink 3, and a lampshade. 4 and the heat insulation cabin 5, the lamp housing 1 is provided with an accommodation cavity, and the accommodation cavity is provided with an insulation cabin 5, the bulb driver is installed in the insulation cabin 5, and the bulb driver is isolated and placed through the insulation cabin 5. The substrate 2 is provided with a light-emitting unit, and the light bulb driver in the heat-insulating cabin 5 can control the light-emitting unit to emit light. Please refer to FIG. 3 , the radiator 3 is connected to the lamp housing 1 and disposed between the lamp housing 1 and the substrate 2 , and the heat generated by the light-emitting unit is dissipated in time through the radiator 3 . Understandably, the substrate 2 may be a thermally conductive aluminum substrate 2 or a circuit board, or a light board or a light source board. The lampshade 4 is used to cover the light-emitting unit on the base plate 2 to protect the light-emitting unit, and the baseplate 2 is installed in the lampshade 4 . It can be understood that the lampshade 4 is made of a transparent member or a light-transmitting member made of plastic or glass. The side of the radiator 3 facing the lamp housing 1 is provided with a cavity 34 , the radiator 3 is provided with a first airflow channel 33 for convection between the air inside the cavity 34 and the external air, and the lamp housing 1 is provided with a cavity for 34 The first heat dissipation hole 12 for the convection between the internal air and the air in the accommodating cavity, the side of the lamp housing 1 is provided with the second heat dissipation hole 13 for the convection of the air inside the accommodating cavity and the outside air; A second airflow channel for air to pass through is formed between the inner peripheral surfaces of the shell 1, the second airflow channel communicates with the first heat dissipation hole 12 and the second heat dissipation hole 13 respectively, and the side surface of the heat insulation cabin 5 The third heat dissipation hole 52 through which the heat inside the heat insulation compartment 5 is discharged.

It can be understood that in another embodiment of the present application, please refer to FIG. 1 , FIG. 3 and FIG. 7 , the positions of the third heat dissipation holes 52 correspond to the positions of the second heat dissipation holes 13 , and the number of the third heat dissipation holes 52 is set. The plurality of third heat dissipation holes 52 are distributed at equal intervals along the circumferential direction of the insulation cabin 5 , which is conducive to the rapid flow of airflow in the horizontal direction, and improves the ventilation and heat dissipation efficiency and heat dissipation effect inside the insulation cabin 5 . In addition, a second airflow channel for airflow is formed between the outer side surface of the heat insulation compartment 5 and the inner peripheral surface of the lamp housing 1. No matter whether the bulb is placed upright or inverted, or placed obliquely, a smooth flow can be formed. The heat-dissipating airflow channel enables rapid heat exchange between the air inside the lamp housing 1 and the outside air, so that the lamp housing 1 achieves a ventilation and ventilation convection heat dissipation effect. Understandably, the heat insulating cabin 5 is made of insulating heat insulating material, and has good insulating and heat insulating performance.

In the lamp provided by this embodiment, the bulb driver is installed in the accommodating cavity inside the lamp housing 1, and the light-emitting unit is installed on the base plate 2 in the lamp housing 4, then when the lamp works and generates heat, since the radiator 3 is arranged on the lamp housing 1 Between the light-emitting unit and the substrate 2, the heat generated by the light-emitting unit can be quickly dissipated through the radiator 3, which greatly reduces the heat generated when the light-emitting unit works and transfers to the lamp housing 1, and avoids the bulb driver and other electronic components inside the lamp housing 1. Component temperature is too high. At the same time, due to the temperature difference effect generated when the radiator 3 dissipates heat, according to the principle of aerodynamics, the cold air around the lamp will enter the cavity on the side of the radiator 3 facing the lamp housing 1 from the first airflow channel 33 of the radiator 3 34. The air in the cavity 34 enters the accommodating cavity of the lamp housing 1 from the first heat dissipation hole 12, absorbs and takes away the heat generated by the operation of the light bulb driver and other electronic components and becomes hot air, which can be released from the lamp housing 1. The second heat dissipation hole 13 on the side surface flows out of the lamp housing 1, so as to achieve the purpose of air convection and rapid heat dissipation. In this way, the heat generated by the light emitting unit and the heat inside the lamp housing 1 can be dissipated in a timely, fast and efficient manner, reducing the impact of high temperature on the light bulb driver and other electronic components accommodated in the lamp housing 1 . In the above heat dissipation process, the first airflow channel 33 of the radiator 3, the cavity 34 on the side of the radiator 3 facing the lamp housing 1, the first heat dissipation hole 12 on the lamp housing 1 and the first heat dissipation hole 12 on the side of the lamp housing 1 are formed. In the first heat dissipation channel formed by the two heat dissipation holes 13, the cold air around the cavity 34 of the heat sink 3 enters the first heat dissipation channel from the first air flow channel 33 of the heat sink 3, and forms air convection in the first heat dissipation channel. During the convection process, the heat generated by the bulb driver and other electronic components inside the lamp housing 1 will be absorbed and quickly taken away, so that the lamp housing 1 can achieve the effect of ventilation, ventilation and heat dissipation, and the heat in the lamp housing 1 can be flowed through the air. It is quickly dissipated into the air outside the lamp housing 1, the heat dissipation effect is good, and the heat dissipation efficiency is high.

In the lamp provided by this embodiment, a heat insulating compartment 5 is arranged in the accommodating cavity of the lamp housing 1 , then the light bulb driver or other electronic components can be placed in the heat insulating compartment 5 , and the light bulb driver or other electronic components can be placed in the heat insulating compartment 5 through the heat insulating compartment 5 . The components are insulated and insulated to prevent the heat inside the lamp housing 1 from causing a heating effect on the lamp driver or other electronic components. A third heat dissipation hole 52 is opened on the side of the heat insulation cabin 5, and the heat insulation cabin 5 is communicated with the accommodating cavity of the lamp housing 1 through the third heat dissipation hole 52, so that when the light bulb driver or other electronic components work in the heat insulation cabin 5 The heat generated can be discharged through the third heat dissipation hole 52 and the second heat dissipation hole 13 in sequence, so as to prevent the temperature of the light bulb driver or other electronic components in the heat insulation chamber 5 from being too high, and ensure the stable operation of the light bulb driver or other electronic components. reliability. In addition, a second airflow channel for air to pass through is formed between the outer side surface of the heat insulation chamber 5 and the inner peripheral surface of the lamp housing 1, and the second airflow channel is communicated with the first heat dissipation hole 12 and the second heat dissipation hole 13 respectively, so that the The first air flow channel 33, the annular convection cavity, the first heat dissipation hole 12, the second air flow channel, and the second heat dissipation hole 13 are connected in sequence to form a first heat dissipation channel for circulating air convection, and the circulation convection occurs in the first heat dissipation channel. The air will absorb and quickly take away the heat inside the lamp housing 1, so that the heat in the lamp housing 1 can be quickly and efficiently dissipated, the heat dissipation effect is good, and the heat dissipation efficiency is high. It can be understood that, in this embodiment, the gap between the outer side surface of the heat insulation compartment 5 and the inner peripheral surface of the lamp housing 1 may be 5 mm˜10 mm. Of course, the gap between the outer side surface of the heat insulation cabin 5 and the inner peripheral surface of the lamp housing 1 can be reasonably selected and set according to the actual heat dissipation requirement, which is not limited here.

Compared with the prior art, in the lamps provided by the embodiments of the present application, the radiator 3 is arranged between the lamp housing 1 and the substrate 2, and the heat insulating chamber 5 is arranged in the lamp housing 1, and the radiator 3 faces the lamp housing. 1 is provided with a cavity 34 on one side, the lamp housing 1 is provided with a first heat dissipation hole 12 that communicates with the cavity 34, a second heat dissipation hole 13 is provided on the side of the lamp housing 1, and a first airflow channel is provided on the radiator 3 33. A second airflow channel is formed between the outer side surface of the heat insulation chamber 5 and the inner peripheral surface of the lamp housing 1, and the second airflow channel is respectively connected with the first heat dissipation hole 12 and the second heat dissipation hole 13, so that the first airflow channel 33. The cavity 34, the first heat dissipation hole 12, the second air flow channel, and the second heat dissipation hole 13 are sequentially connected to form a first heat dissipation channel for circulating and convection of air. Then, when the lamp works, a larger part of the heat generated by the light emitting unit can be dissipated through the radiator 3, while a smaller part of the heat is transferred to the lamp housing 1 through the radiator 3 for heat dissipation. At the same time, the cold air around the lamp will form air convection in the first heat dissipation channel, and the convection air will absorb and quickly take away the heat inside the lamp housing 1, so that the heat in the lamp housing 1 can be quickly and efficiently dissipated. Good heat dissipation effect and high heat dissipation efficiency. In addition, a third heat dissipation hole 52 communicated with the accommodating cavity of the lamp housing 1 is opened on the side surface of the heat insulating compartment 5, so that the heat generated by the bulb driver in the heat insulating compartment 5 can be discharged in time. In this way, the heat generated when the light-emitting unit is working can be dissipated in a timely, fast and efficient manner, and the lamp housing 1 can be ventilated and ventilated to achieve a convection heat dissipation effect, thereby enabling the light-emitting unit and the light bulb driver to operate in a lower temperature environment. It ensures the safety and reliability of the lamps and prolongs the service life of the lamps.

It can be understood that, in another embodiment of the present application, referring to FIG. 4 , in order to improve the air flow rate, the first airflow channel 33 , the cavity 34 , the first heat dissipation hole 12 , the accommodating cavity, and the second heat dissipation hole 13 are connected in sequence. Due to the convection heat dissipation effect in the first heat dissipation channel formed, the first airflow channel 33 on the radiator 3 can be set in multiple numbers, and the specific number can be reasonably selected and set according to the actual heat dissipation requirements, which is not limited here.

It can be understood that, in another embodiment of the present application, referring to FIG. 8 , in order to improve the air flow rate, the first airflow channel 33 , the cavity 34 , the first heat dissipation hole 12 , the accommodating cavity, and the second heat dissipation hole 13 are connected in sequence. Through the convection heat dissipation effect in the first heat dissipation channel formed, the number of the first heat dissipation holes 12 may be set to multiple, and the number of the second heat dissipation holes 13 may also be set to multiple. For example, in another embodiment of the present application, the number of the first heat dissipation holes 12 is set to 12, and the number of the second heat dissipation holes 13 is also set to be twelve. Of course, the specific numbers of the first heat dissipation holes 12 and the second heat dissipation holes 13 can be reasonably selected and set according to actual heat dissipation requirements, which are not limited here.

It can be understood that, in another embodiment of the present application, please refer to FIG. 2 and FIG. 6 in conjunction with FIG. 2 and FIG. 6 , the second heat dissipation hole 13 may be an elongated hole extending along the height direction of the lamp housing 1 , which is beneficial to the air convection inside and outside the lamp housing 1 . , improve heat dissipation efficiency and heat dissipation effect. In another embodiment of the present application, the plurality of elongated second heat dissipation holes 13 are distributed at equal intervals along the circumference of the lamp housing 1 , which facilitates the rapid flow of air in the horizontal direction and further improves heat dissipation efficiency and heat dissipation effect.

In another embodiment of the present application, please refer to FIG. 4 , the heat sink 3 includes a heat dissipation base 31 and a plurality of heat dissipation members 32 supported and fixed on the heat dissipation base 31 . The plurality of heat dissipation members 32 are along the circumference of the heat dissipation base 31 . Spaced to form a cavity 34 on one side of the heat dissipation base 31, a first airflow channel 33 is formed in the gap between two adjacent heat dissipation members 32, the lamp housing 1 is connected to the heat dissipation member 32, and the lampshade 4 is covered to cover the heat dissipation member 32. On the side of the base 31 facing away from the lamp housing 1, a first wire hole 36 is provided through the heat dissipation base 31, a second wire hole 11 is correspondingly opened on the lamp housing 1, and a third wire hole 11 is correspondingly formed on the heat insulation cabin 5. Wire hole 51 .

In this embodiment, a plurality of heat sinks 32 are arranged at intervals along the circumferential direction of the heat dissipation base 31 , so that the plurality of heat sinks 32 form cavities 34 on one side of the heat dissipation base 31 , and a gap between two adjacent heat sinks 32 is formed. The first airflow channel 33 communicating with the cavity 34 not only makes the radiator 3 have good ventilation and heat dissipation performance, but also makes the lamp simple, reduces the consumption of metal materials, reduces the weight of the entire bulb, and reduces the manufacturing cost of the bulb. Please refer to FIG. 4 and FIG. 8 , the radiator 3 is provided with a first wire hole 36 , the lamp housing 1 is provided with a second wire hole 11 correspondingly, and the heat insulation cabin 5 is provided with a third wire hole correspondingly 51, the light emitting unit on the connection substrate 2 and the light bulb driver are guided through the first wire hole 36, the second wire hole 11 and the third wire hole 51 in sequence to realize the electrical connection between the light emitting unit and the light bulb driver.

It can be understood that the heat sink 32 in this embodiment can be a heat sink 321 such as a copper heat sink 321, a copper-aluminum heat sink 321, an iron heat sink 321, a graphite heat sink 321, an aluminum profile heat sink 321, an aluminum plate heat sink 321 and the like One or more of these, the heat dissipation base 31 may be made of thermally conductive material aluminum, so as to achieve a good heat dissipation effect.

In another embodiment of the present application, please refer to FIG. 2 and FIG. 4 in combination, the heat sink 32 includes two heat sinks 321 arranged in pairs and connected, and the included angle between the two heat sinks 321 is an acute angle. In this embodiment, each heat sink 32 includes two heat sinks 321 arranged in pairs and connected to each other, and the included angle between the two heat sinks 321 is an acute angle, so that the heat sink 32 is designed in a bifurcated tooth structure, which effectively increases the The heat dissipation area is increased, and the heat dissipation efficiency of the heat sink 3 is improved. In addition, the heat sink 32 is designed in a bifurcated tooth structure, which can also reduce the amount of metal material, reduce the weight of the entire bulb, and reduce the manufacturing cost of the bulb. Of course, in another embodiment of the present application, two fins 321 are designed in a bifurcated tooth structure, and they can also be integrally formed, and the cross section of the radiator 32 integrally formed by the two fins 321 is "V" shaped Or "U" shape, which reduces the manufacturing process, improves the processing efficiency, and reduces the manufacturing cost of the light bulb on the premise of ensuring the effective heat dissipation area.

In another embodiment of the present application, please refer to FIG. 4 , the heat dissipation base 31 is a heat dissipation plate, the heat dissipation plate is connected to the lampshade 4 , a plurality of heat dissipation members 32 are protruded on the side of the heat dissipation plate away from the lampshade 4 , and a plurality of heat dissipation members The parts 32 are arranged at intervals along the circumferential direction of the heat dissipation plate to form a cavity 34 on the side of the heat dissipation plate away from the lampshade 4. The cavity 34 is provided with a heat conduction column 35 whose one end is connected to the heat dissipation plate, and the other end of the heat conduction column 35 is connected to the lamp. When the shell 1 is in contact, the inner part of the cavity 34 outside the heat-conducting column 35 forms an annular convection cavity.

In this embodiment, the heat dissipation base 31 is arranged in a plate shape, and a plurality of heat dissipation members 32 are arranged at intervals along the circumferential direction of the heat dissipation plate, so that a cavity 34 is formed on the side of the heat dissipation plate away from the lampshade 4, which is beneficial to reduce the size and weight, thereby reducing the size and weight of the entire bulb. In addition, if the cavity 34 is provided with a heat-conducting column 35, when the light bulb works, the heat generated by the light-emitting unit is transferred to the heat-dissipating plate, and most of the heat on the heat-dissipating plate is radiated and dissipated through a number of heat-dissipating members 32, while the heat-dissipating plate is radiated. A small part of the heat can also be transferred to the lamp housing 1 through the heat conduction column 35 for heat dissipation, so as to improve the heat dissipation efficiency and heat dissipation effect of the radiator 3 . In addition, the inner part of the cavity 34 outside the heat-conducting column 35 forms an annular convection cavity, the gap between two adjacent heat sinks 32 forms a first airflow channel 33 that communicates with the annular convection cavity, and the annular convection cavity passes heat through the first air flow channel 33 . The hole 12 is communicated with the accommodating cavity of the lamp housing 1, so that the first air flow channel 33, the annular convection cavity, the first heat dissipation hole 12, the accommodating cavity, and the second heat dissipation hole 13 are connected in sequence to form a first heat dissipation channel for air circulation and convection. , the air circulating convection in the first heat dissipation channel will absorb and quickly take away the heat inside the lamp housing 1, so that the heat in the lamp housing 1 can be quickly and efficiently dissipated, and the heat dissipation effect is good and the heat dissipation efficiency is high.

It can be understood that, in another embodiment of the present application, the thermal conductive column 35 can also be set as a truncated cone or a circular frustum, and the end face of one end of the thermal conductive column 35 behind the discrete heat plate is contacted by thermal conductive glue or silicone grease to form a heat conduction path, so that the heat can be quickly transferred. It is transmitted to the lamp housing 1 to speed up the heat dissipation and improve the heat dissipation effect. In addition, a wire passage is provided through the heat conduction column 35 along its axial direction, and the wire passage is communicated with the first wire passage hole 36 to conveniently accommodate the joints and outgoing wires of the lamp board or the light source board.

It can be understood that in another embodiment of the present application, referring to FIG. 4 , a plurality of heat sinks 32 are arranged at equal intervals along the circumference of the heat sink, and the gap between two adjacent heat sinks 321 forms a uniformly distributed first heat sink 32 . The airflow channel 33 is beneficial to form a uniform heat dissipation channel. The evenly distributed several first airflow channels 33 are respectively connected with the annular convection cavity, which facilitates the rapid flow of the airflow in the horizontal direction and improves the heat dissipation efficiency.

In another embodiment of the present application, please refer to FIG. 5 , the lamp further includes a ring-shaped lamp socket 6 connected to the end of the lamp housing 1 away from the heat sink 3 , and the ring-shaped lamp socket 6 is covered on the heat insulation chamber 5 . On the opening of one end facing away from the radiator 3, the annular hole of the annular lamp holder 6 forms a fourth wire hole 61, and the annular lamp holder 6 is provided with a fourth heat dissipation hole 62 for the convection between the air inside the thermal insulation chamber 5 and the outside air. .

In this embodiment, the end of the lamp housing 1 away from the radiator 3 is provided with a ring-shaped lamp holder 6, and the annular lamp holder 6 is covered on the opening of the end of the heat-insulating cabin 5 away from the radiator 3, and is placed on the ring-shaped lamp The seat 6 is provided with a fourth heat dissipation hole 62, then the second heat dissipation hole 13 on the side of the lamp housing 1, the third heat dissipation hole 52 on the side of the heat insulation cabin 5, and the fourth heat dissipation hole 62 on the annular lamp holder 6 are formed. The second heat dissipation channel for air convection inside and outside the insulation chamber 5, according to the principle of aerodynamics, the cold air around the bulb will form air convection in the second heat dissipation channel, and the convection air will absorb and quickly take away the heat insulation chamber 5 The internal heat can quickly and efficiently dissipate the heat in the thermal insulation compartment 5, so that the working temperature of the bulb driver or other electronic components in the thermal insulation compartment 5 will not be too high, ensuring the safety and reliability of the use of the bulb. . It can be understood that in this embodiment, the number of the fourth heat dissipation holes 62 can be set to a plurality, and the plurality of fourth heat dissipation holes 62 are distributed on the annular lamp holder 6 at equal intervals, which is conducive to the rapid and uniform convective exchange of airflow, and achieves The purpose of rapid and efficient heat dissipation.

In another embodiment of the present application, please refer to FIG. 8 , the lamp housing 1 includes a metal casing 14 and a metal cover plate 15 which is covered and fixed on the opening of the metal casing 14 near one end of the radiator 3 . The radiator 3 Connected to the metal cover plate 15, the first heat dissipation hole 12 is provided on the metal cover plate 15, the second heat dissipation hole 13 is provided on the side of the metal casing 14, the metal cover plate 15 is provided with a second wire hole 11, the heat sink 3 is in contact with the metal cover plate 15 .

In this embodiment, the lamp housing 1 includes a metal casing 14 and a metal cover plate 15 , the metal cover plate 15 is covered and fixed on the opening of the metal casing 14 near one end of the heat sink 3 , and the heat sink 3 is connected to the metal cover plate 15 , the second heat dissipation hole 13 is arranged on the side of the metal casing 14, then the first air flow channel 33, the cavity 34, the first heat dissipation hole 12, the accommodation cavity, and the second heat dissipation hole 13 are connected in sequence to form a second air supply air circulation convection. A heat dissipation channel can make the lamp housing 1 achieve the effect of convection heat dissipation of ventilation and ventilation. It can be understood that the lamp housing 1 in this embodiment can be an aluminum part with good thermal conductivity, but the lamp housing 1 is not limited to an aluminum part.

In another embodiment of the present application, please refer to FIG. 7 and FIG. 8 in conjunction with FIG. 7 and FIG. 8 , the lamp further includes a ring-shaped lamp socket 6 covered on the opening of the end of the metal casing 14 away from the heat sink 3 , and a ring hole of the ring-shaped lamp socket 6 A fifth wire-passing hole 63 is formed, and the annular lamp socket 6 is provided with a fifth heat dissipation hole 64 for convection between the air inside the metal casing 14 and the outside air.

In this embodiment, the annular lamp holder 6 on the opening of the end of the metal casing 14 away from the heat sink 3 is provided with a fifth heat dissipation hole 64, so that the first airflow channel 33, the cavity 34, the first air flow passage 33, the A heat dissipation hole 12, a second air flow channel, and a fifth heat dissipation hole 64 are sequentially connected to form a third heat dissipation channel for circulating and convection of air flow. According to the aerodynamic principle, the cold air around the bulb will form air in the third heat dissipation channel Convection, the convective air will absorb and quickly take away the heat inside the lamp housing 1, so that the heat inside the lamp housing 1 can be quickly and efficiently dissipated, ensuring the safety and reliability of the bulb. It can be understood that in this embodiment, the number of the fifth heat dissipation holes 64 can be set to a plurality, and the plurality of fifth heat dissipation holes 64 are distributed on the annular lamp holder 6 at equal intervals, which is conducive to the rapid and uniform convective exchange of airflow, and achieves The purpose of rapid and efficient heat dissipation.

In another embodiment of the present application, please refer to FIG. 3 , the substrate 2 is a metal plate, and one side of the metal plate is attached to the side of the heat sink 3 facing away from the lamp housing 1 . In this embodiment, the substrate 2 is a metal plate, and one side of the metal plate is attached to the side of the heat sink 3 away from the lamp housing 1 . Understandably, when the heat dissipation base 31 of the radiator 3 is in the shape of a plate, one side of the metal plate is attached to the side of the heat dissipation plate (the heat dissipation base 31 ) of the radiator 3 facing away from the lamp housing 1 . Then when the light bulb is working, the heat generated by the light-emitting unit supported on the substrate 2 can be quickly transferred to the radiator 3 through the substrate 2, so that the radiator 3 can timely, quickly and efficiently dissipate the heat generated by the light-emitting unit during operation. It can be radiated out to avoid the rapid rise of temperature caused by heat accumulation in the lampshade 4 . It can be understood that the light-emitting unit in this embodiment can be an LED light source but is not limited to an LED light source, such as a laser diode or an organic light-emitting diode, etc. As for the type of light-emitting light source used by the light-emitting unit, it can be reasonably selected according to the actual lighting needs. Settings, which are not uniquely limited here. Understandably, the substrate 2 in this embodiment may be a metal plate such as an aluminum substrate 2 or a copper-aluminum alloy plate with good thermal conductivity, but the substrate 2 is not limited to the aluminum substrate 2 or the copper-aluminum alloy plate.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims (10)

1. A light fixture, comprising:

the lamp shell (1) is provided with an accommodating cavity;

a substrate (2) provided with a light emitting unit;

a bulb driver controlling the light emitting unit to emit light;

the radiator (3) is connected with the lamp shell (1), arranged between the lamp shell (1) and the substrate (2) and used for radiating heat generated by the light-emitting unit during working;

the lampshade (4) is arranged on one side of the substrate (2) departing from the lamp shell (1) and is used for covering the light-emitting unit on the substrate (2); and

the heat insulation cabin (5) is arranged in the accommodating cavity and is used for isolating and placing the bulb driver;

a cavity (34) is arranged on one surface, facing the lamp housing (1), of the heat radiator (3), a first air flow channel (33) for convection between air inside the cavity (34) and outside air is arranged on the heat radiator (3), a first heat dissipation hole (12) for convection between air inside the cavity (34) and air inside the accommodating cavity is formed in the lamp housing (1), and a second heat dissipation hole (13) for convection between air inside the accommodating cavity and outside air is formed in the side surface of the lamp housing (1); a second air flow channel for air flow to pass through is formed between the outer side face of the heat insulation cabin (5) and the inner peripheral face of the lamp shell (1), the second air flow channel is respectively communicated with the first heat dissipation hole (12) and the second heat dissipation hole (13), and a third heat dissipation hole (52) for discharging heat inside the heat insulation cabin (5) is formed in the side face of the heat insulation cabin (5).

2. A lamp as claimed in claim 1, characterized in that the heat sink (3) comprises a heat dissipation base (31) and a plurality of heat dissipation members (32) supported and fixed on the heat dissipation base (31), the plurality of heat dissipation members (32) being arranged at intervals along the circumference of the heat dissipation base (31) to form the cavity (34) on one face of the heat dissipation base (31), the gap between two adjacent heat dissipation members (32) forming the first air flow channel (33), the lamp shell (1) is connected with the heat dissipation member (32), the lampshade (4) is covered on one surface of the heat dissipation base (31) deviating from the lamp shell (1), a first wire passing hole (36) penetrates through the heat dissipation base (31), a second wire passing hole (11) is correspondingly formed in the lamp shell (1), and a third wire passing hole (51) is correspondingly formed in the heat insulation cabin (5).

3. A lamp as claimed in claim 2, characterized in that said heat sink (32) comprises two fins (321) arranged in pairs and connected, the angle between said fins (321) being acute; or the heat dissipation piece (32) is a heat dissipation piece with a V-shaped cross section; or the heat dissipation piece (32) is a heat dissipation piece with a U-shaped cross section.

4. A lamp as claimed in claim 2, wherein the heat dissipation base (31) is a heat dissipation plate, the heat dissipation plate is connected to the lamp housing (4), a plurality of heat dissipation members (32) are protruded from a surface of the heat dissipation plate facing away from the lamp housing (4), the plurality of heat dissipation members (32) are spaced apart from each other along a circumferential direction of the heat dissipation plate to form the cavity (34) on the surface of the heat dissipation plate facing away from the lamp housing (4), a heat conduction post (35) having one end connected to the heat dissipation plate is disposed in the cavity (34), the other end of the heat conduction post (35) is in contact with the lamp housing (1), and a portion inside the cavity (34) outside the heat conduction post (35) forms an annular convection cavity.

5. The lamp according to claim 1, further comprising a ring-shaped lamp holder (6) connected to an end of the lamp housing (1) facing away from the heat sink (3), wherein the ring-shaped lamp holder (6) covers an opening of the heat insulation chamber (5) facing away from the heat sink (3), a fourth wire through hole (61) is formed in the ring hole of the ring-shaped lamp holder (6), and a fourth heat dissipation hole (62) for convection between air inside the heat insulation chamber (5) and air outside the heat insulation chamber is formed in the ring-shaped lamp holder (6).

6. A lamp as claimed in claim 1, wherein said lamp housing (1) comprises a metal casing (14) and a metal cover plate (15) covering and fixed on an opening of said metal casing (14) near one end of said heat sink (3), said heat sink (3) is abutted against said metal cover plate (15), said first heat dissipation hole (12) is disposed on said metal cover plate (15), said second heat dissipation hole (13) is disposed on a side surface of said metal casing (14), said metal cover plate (15) is provided with a second wire passing hole (11).

7. A lamp as claimed in claim 6, characterized in that said lamp further comprises an annular base (6) covering an opening at an end of said metal housing (14) facing away from said heat sink (3), a fifth wire passing hole (63) is formed in an annular hole of said annular base (6), and a fifth heat dissipating hole (64) for convection of air inside said metal housing (14) and outside air is formed in said annular base (6).

8. A lamp as claimed in any one of claims 1 to 7, characterized in that said substrate (2) is a metal plate, one side of which is attached to the side of said heat sink (3) facing away from said envelope (1).

9. A lamp as claimed in any one of claims 1 to 7, characterized in that said second heat dissipation hole (13) is a long hole extending along the height direction of said lamp housing (1).

10. A lamp as claimed in any one of claims 1 to 7, characterized in that the number of said second heat dissipation holes (13) is provided in plurality, and said second heat dissipation holes (13) are distributed at equal intervals along the circumference of said lamp housing (1).

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