CN212132068U

CN212132068U - Lamp fitting

Info

Publication number: CN212132068U
Application number: CN202020872143.2U
Authority: CN
Inventors: 张爱民; 谢奕
Original assignee: Aputure Imaging Industries Co Ltd
Current assignee: Shenzhen Aitushi Innovation Technology Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2020-12-11
Anticipated expiration: 2030-05-21

Abstract

The application provides a lamp, and the lamp comprises a lamp shell, a base plate, a light-emitting unit, a bulb driver, a radiator, a lampshade and a heat insulation cabin, wherein the heat insulation cabin is arranged in the lamp shell. The lamp is characterized in that the radiator is arranged between the lamp shell and the base plate, the radiator is provided with a cavity and a first air flow channel communicated with the cavity, the lamp shell is provided with a first heat dissipation hole communicated with the cavity, the side surface of the lamp shell is provided with a second heat dissipation hole, a second air flow channel is formed between the outer side surface of the heat insulation cabin and the inner circumferential surface of the lamp shell, and the second air flow channel is communicated with the first heat dissipation hole and the second heat dissipation hole respectively, so that the first air flow channel, the cavity, the first heat dissipation hole, the second air flow channel and the second heat dissipation hole are communicated in sequence to form a first heat dissipation channel. When the lamp works, heat generated by the light-emitting unit during working is dissipated through the radiator, and cold air around the lamp can form air convection in the first heat dissipation channel, so that the ventilation and ventilation convection heat dissipation effect is achieved.

Description

Lamp fitting

Technical Field

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

Background

With the wide application of Light Emitting Diode (LED, Light Emitting Diode) lighting technology, LED bulb lamps gradually become novel energy-saving lamps replacing traditional incandescent bulbs. Current LED ball bubble lamp, the heat that its illumination during operation produced generally relies on the trompil of shell to dispel the heat alone, but it has the problem that radiating efficiency is lower and the radiating effect is relatively poor, the heat that leads to LED ball bubble lamp internal power and light source to produce is difficult to in time, distribute away fast, cause the temperature of LED ball bubble lamp to rise sharply easily, cause LED to produce the light decay inefficacy, shorten the life of LED ball bubble lamp, still can cause the inside electron device of LED ball bubble lamp to burn out the damage even, the fail safe nature who seriously influences lamps and lanterns and use.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a lamp, so that the technical problems that the radiating efficiency of a bulb lamp in the prior art is low, the radiating effect is poor, and the heat inside the bulb lamp is difficult to timely and quickly dissipate are solved.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a lamp including:

the lamp shell is provided with an accommodating cavity;

a substrate provided with a light emitting unit;

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

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

the lampshade is arranged on one side of the substrate, which is far away from the lamp shell, and is used for covering the light-emitting unit on the substrate; and

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

the lamp body is provided with a first heat dissipation hole for convection between air inside the cavity and air inside the accommodating cavity, and the side surface of the lamp body is provided with a second heat dissipation hole for convection between air inside the accommodating cavity and air outside the accommodating cavity; and a second air flow channel for air flow to pass through is formed between the outer side surface of the heat insulation cabin and the inner peripheral surface of the lamp shell, the second air flow channel is respectively communicated with the first heat dissipation hole and the second heat dissipation hole, and a third heat dissipation hole for discharging heat inside the heat insulation cabin is formed in the side surface of the heat insulation cabin.

Optionally, the heat sink includes a heat dissipation base and a plurality of heat dissipation members supported and fixed on the heat dissipation base, the heat dissipation members are arranged along the circumference of the heat dissipation base at intervals to form the cavity on one surface of the heat dissipation base, a gap between every two adjacent heat dissipation members forms the first airflow channel, the lamp housing is connected with the heat dissipation members, the lamp shade cover is arranged on one surface of the heat dissipation base deviating from the lamp housing, a first wire passing hole is arranged on the heat dissipation base in a penetrating manner, a second wire passing hole is correspondingly arranged on the lamp housing, and a third wire passing hole is correspondingly arranged on the heat insulation cabin.

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

Optionally, the heat dissipation base is the heating panel, the heating panel with the lamp shade links to each other, and is a plurality of the protruding locating of radiating piece the heating panel deviate from in the one side of lamp shade, and is a plurality of the radiating piece is followed the circumference interval setting of heating panel with the deviation of heating panel forms in the one side of lamp shade the cavity, be equipped with one end in the cavity with the heat conduction post that the heating panel links to each other, the other end of heat conduction post with the lamp body contact, the cavity inside in the part outside the heat conduction post forms annular convection current chamber.

Optionally, the lamp further comprises an annular lamp holder connected to the lamp housing deviating from one end of the radiator, the annular lamp holder is covered on an opening of one end of the radiator deviating from the heat insulation cabin, a fourth line passing hole is formed in an annular hole of the annular lamp holder, and a fourth heat dissipation hole for supplying convection between air inside the heat insulation cabin and outside air is formed in the annular lamp holder.

Optionally, the lamp housing includes a metal housing and a metal cover plate covering and fixed on an opening of one end of the metal housing close to the heat sink, the heat sink is abutted to the metal cover plate, the first heat dissipation hole is formed in the metal cover plate, the second heat dissipation hole is formed in a side surface of the metal housing, and the metal cover plate is provided with a second wire passing hole.

Optionally, the lamp further comprises an annular lamp holder covering the opening at the end, deviating from the radiator, of the metal shell, a fifth wire passing hole is formed in an annular hole of the annular lamp holder, and a fifth heat dissipation hole used for supplying convection between air inside the metal shell and air outside the metal shell is formed in the annular lamp holder.

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

Optionally, the second heat dissipation hole is a strip hole, and the strip hole extends along the height direction of the lamp housing.

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

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

the lamp provided by the embodiment of the application, locate the radiator between lamp body and base plate, be provided with the heat insulating cabin in the lamp body, be equipped with the cavity in the radiator one side towards the lamp body, set up the first louvre of intercommunication cavity on the lamp body, set up the second louvre on the side of lamp body, be equipped with first air current channel on the radiator, be formed with the second air current channel between the lateral surface of heat insulating cabin and the inner peripheral surface of lamp body, second air current channel communicates with first louvre and second louvre respectively, make first air current channel, the cavity, first louvre, the second air current channel, the second louvre is linked together in proper order and is formed the first heat dissipation channel of air current circulation convection current. When the lamp works, a large part of heat generated by the light-emitting unit during working can be dissipated through the radiator, and a small part of heat is transferred to the lamp shell through the radiator to dissipate heat. Meanwhile, cold air around the lamp can form air convection in the first heat dissipation channel, the convection air can absorb and rapidly take away heat inside the lamp housing, and then the heat in the lamp housing can be rapidly and efficiently dissipated. And moreover, a third heat dissipation hole communicated with the accommodating cavity of the lamp shell is formed in the side face of the heat insulation cabin, so that heat generated by the lamp bulb driver in the heat insulation cabin during working can be timely discharged. Therefore, heat generated by the light-emitting unit during working can be timely, quickly and efficiently dissipated, the lamp shell can achieve the ventilation and ventilation convection effect, the light-emitting unit and the bulb driver can work in a lower temperature environment, the safety and reliability of the lamp are guaranteed, and the service life of the lamp is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a lamp according to an embodiment of the present application;

fig. 2 is an exploded view of a lamp according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a heat sink mounted between a lamp housing and a substrate according to an embodiment of the present application;

fig. 4 is a schematic perspective view of a heat sink according to an embodiment of the present disclosure;

FIG. 5 is a first schematic structural view illustrating a ring-shaped lamp holder disposed on an insulation chamber according to a first embodiment of the present disclosure;

fig. 6 is a schematic structural view of a ring-shaped lamp holder arranged on the heat insulation chamber according to the first embodiment of the present application;

fig. 7 is a schematic structural view of a lamp housing provided with an annular lamp holder according to the second embodiment of the present application;

fig. 8 is an exploded view of the lamp envelope and annular base of fig. 7.

Wherein, in the figures, the respective reference numerals:

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

2-a substrate;

3-a radiator; 31-a heat sink base; 32-a heat sink; 321-cooling fins; 33-a first air flow channel; 34-a cavity; 35-a heat conducting column; 36-a first wire passing hole;

4-a lampshade;

5-a heat insulation cabin; 51-a third wire passing hole; 52-third louvers;

6-ring-shaped lamp holder; 61-a fourth wire passing hole; 62-a fourth heat dissipation aperture; 63-a fifth wire passing hole; 64-fifth louvers.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

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

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Referring to fig. 1 to fig. 4, a lamp according to an embodiment of the present application will be described. The lamp provided by the embodiment of the application includes but is not limited to a bulb lamp, and the lamp includes a lamp housing 1, a substrate 2, a light-emitting unit (not shown in the figure), a bulb driver (not shown in the figure), a radiator 3, a lampshade 4 and a heat insulation cabin 5, wherein a containing cavity is arranged inside the lamp housing 1, the heat insulation cabin 5 is arranged in the containing cavity, the bulb driver is installed in the heat insulation cabin 5, and the bulb driver is isolated and placed through the heat insulation cabin 5. The base plate 2 is provided with a light-emitting unit, and a bulb driver in the heat insulation cabin 5 can control the light-emitting unit to emit light. Referring to fig. 3, the heat sink 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 during operation is dissipated in time through the heat sink 3. It can be understood that the substrate 2 may be a heat conductive aluminum substrate 2 or a circuit board, and may also be a lamp panel or a light source panel. The lampshade 4 is used for covering the light-emitting unit on the substrate 2 and protecting the light-emitting unit, and the substrate 2 is arranged in the lampshade 4. It is understood that the lamp housing 4 is a transparent member or a light-transmitting member made of plastic or glass. Wherein, one side of the heat sink 3 facing the lamp housing 1 is provided with a cavity 34, the heat sink 3 is provided with a first airflow channel 33 for convection between air inside the cavity 34 and outside air, the lamp housing 1 is provided with a first heat dissipation hole 12 for convection between air inside the cavity 34 and air inside the accommodating cavity, and the side of the lamp housing 1 is provided with a second heat dissipation hole 13 for convection between air inside the accommodating cavity and outside air; a second air flow channel for air flow to pass through is formed between the outer side surface of the heat insulation cabin 5 and the inner peripheral surface of the lamp housing 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 heat inside the heat insulation cabin 5 to be discharged is formed in the side surface of the heat insulation cabin 5.

In another embodiment of the present application, please refer to fig. 1, fig. 3 and fig. 7 in combination, the third heat dissipation holes 52 correspond to the second heat dissipation holes 13, and the number of the third heat dissipation holes 52 is set to be plural, and the plural third heat dissipation holes 52 are distributed at equal intervals along the circumferential direction of the heat insulation compartment 5, so as to facilitate the airflow to flow rapidly in the horizontal direction, and improve the efficiency of ventilation and heat dissipation inside the heat insulation compartment 5 and the heat dissipation effect. In addition, a second airflow channel for airflow to pass through is formed between the outer side surface of the heat insulation cabin 5 and the inner peripheral surface of the lamp shell 1, and no matter whether the bulb is placed rightly or reversely or obliquely when in use, a smooth heat dissipation airflow channel can be formed, so that the air inside the lamp shell 1 and the external air can be subjected to heat exchange rapidly, and the lamp shell 1 achieves the ventilation and ventilation convection heat dissipation effect. It can be understood that the heat insulation compartment 5 is made of an insulating material, and has good insulating and heat-insulating properties.

The lamp provided by the embodiment has the advantages that the bulb driver is installed in the accommodating cavity inside the lamp shell 1, the light emitting unit is installed on the substrate 2 in the lampshade 4, when the lamp works to generate heat, the heat generated during the working of the light emitting unit can be rapidly dissipated through the heat sink 3 due to the fact that the heat sink 3 is arranged between the lamp shell 1 and the substrate 2, the heat generated during the working of the light emitting unit is greatly reduced and is transferred to the lamp shell 1, and the temperature of the bulb driver inside the lamp shell 1 and the temperature of other electronic components are prevented from being too high. Therefore, due to the temperature difference effect generated when the heat sink 3 dissipates heat, according to the aerodynamic principle, the cold air around the lamp enters the cavity 34 on the side, facing the lamp housing 1, of the heat sink 3 from the first air flow channel 33 of the heat sink 3, the air in the cavity 34 enters the accommodating cavity of the lamp housing 1 from the first heat dissipation hole 12, the heat generated by the work of the bulb driver and other electronic components is absorbed and taken away to become hot air, and the hot air can flow out of the lamp housing 1 from the second heat dissipation hole 13 on the side surface of the lamp housing 1, so that the purpose of rapid heat dissipation by air convection is achieved. Therefore, heat generated by the light-emitting unit during working and heat inside the lamp housing 1 can be timely, quickly and efficiently dissipated, and the influence of high temperature on a bulb driver and other electronic components accommodated in the lamp housing 1 is reduced. In the above heat dissipation process, the first air flow channel 33 of the heat sink 3, the cavity 34 on the side of the heat sink 3 facing the lamp housing 1, the first heat dissipation channel formed by the first heat dissipation hole 12 on the lamp housing 1 and the second heat dissipation hole 13 on the side of the lamp housing 1, and 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, and the heat generated by the operation of the bulb driver and other electronic components inside the lamp housing 1 can be absorbed and rapidly taken away in the air convection process, so that the lamp housing 1 achieves the effects of ventilation, ventilation and heat dissipation, and the heat in the lamp housing 1 can be rapidly dissipated into the air outside the lamp housing 1 in an air flowing manner, and the heat dissipation effect is good, and.

According to the lamp provided by the embodiment, the heat insulation cabin 5 is arranged in the accommodating cavity of the lamp shell 1, so that the bulb driver or other electronic components can be placed in the heat insulation cabin 5, the bulb driver or other electronic components are insulated, insulated and isolated through the heat insulation cabin 5, and the influence of the heat inside the lamp shell 1 on the temperature rise of the bulb driver or other electronic components is avoided. The third heat dissipation hole 52 is formed in the side face of the heat insulation cabin 5, the heat insulation cabin 5 is communicated with the accommodating cavity of the lamp shell 1 through the third heat dissipation hole 52, heat generated in the heat insulation cabin 5 when the lamp bulb driver or other electronic components work can be discharged through the third heat dissipation hole 52 and the second heat dissipation hole 13 in sequence, the overhigh temperature of the lamp bulb driver or other electronic components in the heat insulation cabin 5 is avoided, and the working stability and reliability of the lamp bulb driver or other electronic components are guaranteed. In addition, a second air flow channel for air flow to pass through is formed between the outer side surface of the heat insulation cabin 5 and the inner peripheral surface of the lamp housing 1, the second air flow channel is respectively communicated with the first heat dissipation hole 12 and the second heat dissipation hole 13, so that 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 sequentially communicated to form a first heat dissipation channel for air flow circulation convection, and the air which generates circulation convection in the first heat dissipation channel can absorb and rapidly take away the heat inside the lamp housing 1, so that the heat in the lamp housing 1 can be rapidly and efficiently dissipated, the heat dissipation effect is good, and the heat dissipation efficiency is high. It is understood that, in this embodiment, the gap between the outer side surface of the heat insulation chamber 5 and the inner peripheral surface of the lamp housing 1 may be 5mm to 10 mm. Of course, the gap between the outer side surface of the heat insulation chamber 5 and the inner circumferential surface of the lamp housing 1 can be reasonably selected and arranged according to the actual heat dissipation requirement, and is not limited herein.

Compared with the prior art, the lamp provided by the embodiment of the application, through locating radiator 3 between lamp body 1 and base plate 2, be provided with heat insulating cabin 5 in lamp body 1, be equipped with cavity 34 in radiator 3 towards lamp body 1's one side, set up the first louvre 12 that communicates cavity 34 on lamp body 1, second louvre 13 has been seted up on the side of lamp body 1, be equipped with first air current channel 33 on radiator 3, be formed with the second air current channel between the lateral surface of heat insulating cabin 5 and the inner peripheral surface of lamp body 1, the second air current channel communicates with first louvre 12 and second louvre 13 respectively, make first air current channel 33, cavity 34, first louvre 12, the second air current channel, second louvre 13 is linked together in proper order and is formed the first heat dissipation channel of air current circulation convection current. When the lamp works, a large part of heat generated by the light-emitting unit during working can be dissipated through the heat sink 3, and a small part of heat is transferred to the lamp housing 1 through the heat sink 3 for heat dissipation. Meanwhile, cold air around the lamp can form air convection in the first heat dissipation channel, the convection air can absorb and rapidly take away heat inside the lamp housing 1, and then the heat in the lamp housing 1 can be rapidly and efficiently dissipated, so that the heat dissipation effect is good, and the heat dissipation efficiency is high. And, the side of the heat insulation cabin 5 is provided with a third heat dissipation hole 52 communicated with the accommodating cavity of the lamp housing 1, so that heat generated by the lamp bulb driver in the heat insulation cabin 5 during working can be timely discharged. Therefore, heat generated by the light-emitting unit during working can be timely, quickly and efficiently dissipated, the lamp shell 1 can achieve the convection heat dissipation effect of ventilation and ventilation, the light-emitting unit and the bulb driver can work in a lower temperature environment, the safety and reliability of the use of the lamp are guaranteed, and the service life of the lamp is prolonged.

It should be understood that, in another embodiment of the present application, please refer to fig. 4 in combination, in order to improve the convection heat dissipation effect of the air in the first heat dissipation channel formed by sequentially communicating the first air flow channel 33, the cavity 34, the first heat dissipation hole 12, the accommodating cavity, and the second heat dissipation hole 13, the first air flow channel 33 on the heat sink 3 may be provided in plural numbers, and the specific number may be reasonably selected and set according to the actual heat dissipation requirement, which is not limited herein.

In another embodiment of the present application, please refer to fig. 8 in combination, in order to improve the convection heat dissipation effect of the air in the first heat dissipation channel formed by the sequential communication of the first air channel 33, the cavity 34, the first heat dissipation hole 12, the accommodating cavity, and the second heat dissipation hole 13, the number of the first heat dissipation holes 12 may be set to be plural, and the number of the second heat dissipation holes 13 may also be set to be plural. For example, in another embodiment of the present application, the number of the first louvers 12 is set to 12, and the number of the second louvers 13 is also set to 12. Of course, the specific number of the first heat dissipation holes 12 and the second heat dissipation holes 13 may be selected and set according to the actual heat dissipation requirement, and is not limited herein.

In another embodiment of the present application, please refer to fig. 2 and fig. 6 in combination, the second heat dissipation hole 13 may be a long hole extending along the height direction of the lamp housing 1, which is favorable for the convection of the air inside and outside the lamp housing 1, and improves the heat dissipation efficiency and the 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 circumferential direction of the lamp housing 1, which is beneficial to the rapid flow of the air flow in the horizontal direction, and further improves the heat dissipation efficiency and the heat dissipation effect.

In another embodiment of the present application, please refer to fig. 4 in combination, 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 disposed at intervals along a circumferential direction of the heat dissipation base 31 to form a cavity 34 on one surface of the heat dissipation base 31, a first air flow channel 33 is formed in a gap between two adjacent heat dissipation members 32, the lamp housing 1 is connected to the heat dissipation members 32, the lamp shade 4 is covered on a surface of the heat dissipation base 31 facing away from the lamp housing 1, a first wire passing hole 36 is disposed through the heat dissipation base 31, a second wire passing hole 11 is correspondingly disposed on the lamp housing 1, and a third wire passing hole 51 is correspondingly.

In this embodiment, the plurality of heat dissipation members 32 are arranged at intervals along the circumferential direction of the heat dissipation base 31, so that the plurality of heat dissipation members 32 form a cavity 34 on one surface of the heat dissipation base 31, and a first air flow channel 33 communicated with the cavity 34 is formed in a gap between two adjacent heat dissipation members 32, so that the heat sink 3 has good air-permeable heat dissipation performance, the lamp is simple, the amount of metal materials is reduced, the weight of the whole bulb is reduced, and the manufacturing cost of the bulb is reduced. Referring to fig. 4 and 8, a first wire passing hole 36 is formed through the heat sink 3, a second wire passing hole 11 is correspondingly formed in the lamp housing 1, and a third wire passing hole 51 is correspondingly formed in the heat insulation chamber 5, so that the light emitting unit on the connection substrate 2 and the bulb driver are guided to sequentially pass through the first wire passing hole 36, the second wire passing hole 11 and the third wire passing hole 51, thereby achieving electrical connection between the light emitting unit and the bulb driver.

It can be understood that the heat dissipation element 32 in this embodiment may be one or more of a copper heat dissipation element 321, a copper-aluminum combined heat dissipation element 321, an iron heat dissipation element 321, a graphite heat dissipation element 321, an aluminum heat dissipation element 321, and the like, and the heat dissipation base 31 may be made of an aluminum material that is a heat conductive material, 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 dissipation member 32 includes two fins 321 disposed in pairs and connected to each other, and an included angle between the two fins 321 is an acute angle. In this embodiment, each heat dissipation member 32 includes two heat dissipation fins 321 that are disposed in pairs and connected to each other, and an included angle between the two heat dissipation fins 321 is an acute angle, so that the heat dissipation member 32 is designed in a forked tooth-shaped structure, thereby effectively increasing a heat dissipation area and improving a heat dissipation efficiency of the heat sink 3. Moreover, the heat sink 32 is designed to be a forked tooth structure, which can reduce the amount of metal material, reduce the weight of the whole bulb, and reduce the manufacturing cost of the bulb. Certainly, in another embodiment of the present application, the two heat dissipation fins 321 are designed in a forked tooth-shaped structure, and may also be integrally formed, and the cross section of the heat dissipation member 32 integrally formed by the two heat dissipation fins 321 is in a "V" shape or a "U" shape, which reduces the processing and manufacturing processes, improves the processing efficiency, and reduces the manufacturing cost of the bulb on the premise of ensuring the effective heat dissipation area.

In another embodiment of the present application, please refer to fig. 4 in combination, the heat dissipation base 31 is a heat dissipation plate, the heat dissipation plate is connected to the lamp shade 4, the heat dissipation members 32 are protruded on a surface of the heat dissipation plate away from the lamp shade 4, the heat dissipation members 32 are circumferentially spaced along the heat dissipation plate to form a cavity 34 on the surface of the heat dissipation plate away from the lamp shade 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 contacts the lamp housing 1, and a portion inside the cavity 34 outside the heat conduction post 35 forms an annular convection cavity.

In this embodiment, the heat dissipation base 31 is a plate, and the heat dissipation plates are circumferentially spaced to form a plurality of heat dissipation members 32, so that a cavity 34 is formed on the side of the heat dissipation plate away from the lampshade 4, which is beneficial to reducing the size and weight of the heat dissipation device 3, and further reducing the size and weight of the whole bulb. And, be equipped with heat conduction post 35 in cavity 34, then when the bulb during operation, the heat that the luminescence unit during operation produced transmits to the heating panel, and most heat on the heating panel radiates through a plurality of radiating piece 32 and gives off, and less part heat on the heating panel still can transmit to lamp body 1 through heat conduction post 35 and dispel the heat simultaneously, improves the radiating efficiency and the radiating effect of radiator 3. In addition, the portion outside the heat conduction column 35 inside the cavity 34 forms an annular convection cavity, a gap between two adjacent heat dissipation members 32 forms a first airflow channel 33 communicating the annular convection cavity, and the annular convection cavity is communicated with the containing cavity of the lamp housing 1 through the first heat dissipation hole 12, so that the first airflow channel 33, the annular convection cavity, the first heat dissipation hole 12, the containing cavity, and the second heat dissipation hole 13 are sequentially communicated to form a first heat dissipation channel for circulating convection of the airflow, and the air having circulating convection in the first heat dissipation channel can absorb and rapidly take away the heat inside the lamp housing 1, so that the heat in the lamp housing 1 can be rapidly and efficiently dissipated, 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 heat conducting pillar 35 may also be set to be a frustum or a circular truncated cone, and an end surface of one end of the heat conducting pillar 35, which is away from the heat dissipating plate, is contacted with the heat conducting glue or the silicone grease to form a heat conducting path, so as to rapidly transfer heat to the lamp housing 1, accelerate the heat dissipation speed, and improve the heat dissipation effect. In addition, heat conduction post 35 runs through along its axial and is provided with the wire passing channel, and the wire passing channel communicates with first wire passing hole 36 to conveniently hold the joint of lamp plate or light source board and be qualified for the next round of competitions.

It can be understood that, in another embodiment of the present application, please refer to fig. 4 in combination, a plurality of heat dissipation elements 32 are disposed at equal intervals along the circumferential direction of the heat dissipation plate, and the gaps between two adjacent heat dissipation elements 321 form uniformly distributed first air flow channels 33, which is favorable for forming uniform heat dissipation channels. The uniformly distributed first air flow channels 33 are respectively communicated with the annular convection cavity, so that the air flow can rapidly flow in the horizontal direction, and the heat dissipation efficiency is improved.

In another embodiment of the present application, please refer to fig. 5 in combination, the lamp further includes an annular lamp holder 6 connected to an end of the lamp housing 1 away from the heat sink 3, the annular lamp holder 6 covers an opening of the heat insulation chamber 5 away from the heat sink 3, a fourth wire passing hole 61 is formed in an annular hole of the annular lamp holder 6, and a fourth heat dissipation hole 62 for allowing convection between the air inside the heat insulation chamber 5 and the outside air is formed in the annular lamp holder 6.

In this embodiment, an annular lamp holder 6 is disposed on one end of the lamp housing 1 facing away from the heat sink 3, the annular lamp holder 6 covers an opening of one end of the heat insulation chamber 5 facing away from the heat sink 3, a fourth heat dissipation hole 62 is disposed on the annular lamp holder 6, the second heat dissipation hole 13 on the side surface of the lamp housing 1, the third heat dissipation hole 52 on the side surface of the heat insulation chamber 5, and the fourth heat dissipation hole 62 on the annular lamp holder 6 form a second heat dissipation channel for the convection of the air inside and outside the heat insulation chamber 5, the cool air around the bulb forms air convection in the second heat dissipation channel according to the aerodynamic principle, the convection air can absorb and rapidly take away the heat inside the heat insulation cabin 5, so that the heat in the heat insulation cabin 5 can be rapidly and efficiently dissipated, the working temperature of a bulb driver or other electronic components in the heat insulation cabin 5 is not too high, and the safety and reliability of the use of the bulb are ensured. In this embodiment, the number of the fourth heat dissipation holes 62 may be multiple, and the multiple fourth heat dissipation holes 62 are distributed on the annular lamp holder 6 at equal intervals, so that convection exchange can occur rapidly and uniformly in the air flow, and the purpose of rapid and efficient heat dissipation can be achieved.

In another embodiment of the present application, please refer to fig. 8 in combination, the lamp housing 1 includes a metal housing 14 and a metal cover plate 15 covering and fixed on an opening of one end of the metal housing 14 close to the heat sink 3, the heat sink 3 is connected to the metal cover plate 15, the first heat dissipation hole 12 is disposed on the metal cover plate 15, the second heat dissipation hole 13 is disposed on a side surface of the metal housing 14, the metal cover plate 15 is provided with a second wire passing hole 11, and the heat sink 3 is abutted to the metal cover plate 15.

In this embodiment, the lamp housing 1 includes a metal housing 14 and a metal cover plate 15, the metal cover plate 15 covers and is fixed on an opening of one end of the metal housing 14 close to the heat sink 3, the heat sink 3 is connected to the metal cover plate 15, and the second heat dissipation hole 13 is disposed on a side surface of the metal housing 14, so that the first air flow channel 33, the cavity 34, the first heat dissipation hole 12, the accommodating cavity, and the second heat dissipation hole 13 are sequentially communicated to form a first heat dissipation channel for circulating convection of air flow, thereby enabling the lamp housing 1 to achieve the convection heat dissipation effect of ventilation and ventilation. It is understood that the lamp housing 1 in this embodiment may be an aluminum member with good thermal conductivity, but the lamp housing 1 is not limited to the aluminum member.

In another embodiment of the present application, please refer to fig. 7 and 8 in combination, the lamp further includes an annular lamp holder 6 covering the opening of the end of the metal shell 14 away from the heat sink 3, a fifth wire passing hole 63 is formed in an annular hole of the annular lamp holder 6, and a fifth heat dissipating hole 64 for allowing convection between the air inside the metal shell 14 and the outside air is formed in the annular lamp holder 6.

In this embodiment, the annular lamp holder 6 on the opening of the end of the metal shell 14 away from the heat sink 3 is provided with the fifth heat dissipation hole 64 on the annular lamp holder 6, and then the first air flow channel 33, the cavity 34, the first heat dissipation hole 12, the second air flow channel, and the fifth heat dissipation hole 64 are sequentially communicated to form a third heat dissipation channel for air circulation and convection, according to the aerodynamic principle, cold air around the bulb can form air convection in the third heat dissipation channel, the convection air can absorb and rapidly take away the heat inside the lamp housing 1, so that the heat inside the lamp housing 1 can be rapidly and efficiently dissipated, and the safety and reliability of the use of the bulb are ensured. It can be understood that, in this embodiment, the number of the fifth heat dissipation holes 64 may be multiple, and the multiple fifth heat dissipation holes 64 are distributed on the annular lamp holder 6 at equal intervals, which is beneficial to the airflow to quickly and uniformly generate convection exchange, thereby achieving the purpose of quickly and efficiently dissipating heat.

In another embodiment of the present application, please refer to fig. 3 in combination, the substrate 2 is a metal plate, and one surface of the metal plate is attached to one surface of the heat sink 3 facing away from the lamp housing 1. In this embodiment, the substrate 2 is a metal plate, and one surface of the metal plate is attached to one surface of the heat sink 3 away from the lamp housing 1. It can be understood that, when the heat dissipation base 31 of the heat sink 3 is in a plate shape, one surface of the metal plate is attached to one surface of the heat dissipation plate (heat dissipation base 31) of the heat sink 3, which is away from the lamp housing 1. When the bulb works, the heat generated by the light-emitting unit supported on the substrate 2 during working can be well and rapidly transferred to the radiator 3 through the substrate 2, so that the heat generated by the light-emitting unit during working can be timely, rapidly and efficiently dissipated by the radiator 3, and the rapid temperature rise caused by heat accumulation in the lampshade 4 is avoided. It is understood that the light emitting unit in this embodiment may 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, and as to what type of light emitting source is adopted in the light emitting unit, the arrangement may be reasonably selected according to the actual lighting use requirement, and is not limited herein. It is understood that the substrate 2 in this embodiment may be a metal plate such as an aluminum substrate 2 or a copper aluminum alloy plate having good thermal conductivity, but the substrate 2 is not limited to the aluminum substrate 2 or the copper aluminum alloy plate.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

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).