CN217004385U

CN217004385U - Two-cavity type LED explosion-proof lamp

Info

Publication number: CN217004385U
Application number: CN202220752336.3U
Authority: CN
Inventors: 徐凌智; 叶向仁; 李玲; 汪玉平; 叶向霞
Original assignee: Senben Lighting Co ltd
Current assignee: Senben Lighting Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-19
Anticipated expiration: 2032-03-31

Abstract

The utility model provides a two-cavity type LED explosion-proof lamp, which comprises a combined cavity positioned at the upper part and a light source cavity positioned at the lower part, wherein: the top of the combination cavity is provided with an LED driver and a sealing structure for encapsulating the LED driver, and the bottom of the combination cavity is provided with a binding post; the top in light source chamber is provided with LED light source board, and the bottom adopts the transparency to seal. According to the LED lamp, the lamp is configured into a two-cavity structure with a combined cavity and a light source cavity by adopting a specific cavity and cavity cover structure design, the driver and the wiring terminal are installed in the combined cavity, the driver is fixedly installed on the cavity cover, the heat of the LED driver can be effectively dissipated to the outside of the cavity cover in a conduction mode, and the wiring terminal is used for external wiring and wiring of an LED light source plate and the LED driver; the two-cavity type LED explosion-proof lamp effectively improves the heat dissipation efficiency of the LED driver, and further indirectly improves the luminous efficiency and the service life of the LED lamp.

Description

Two-cavity type LED explosion-proof lamp

Technical Field

The utility model relates to the technical field of lighting lamps, in particular to a two-cavity type LED explosion-proof lamp used in an explosion-proof dangerous place.

Background

The LED light source is a novel energy-saving light source widely applied to various occasions in recent years, has the characteristics of high light efficiency, good color rendering property, no stroboflash, instant start, shock resistance and the like, particularly has the advantage of long service life, and is a maintenance-free green energy-saving light source. The LED lamp generally comprises an LED chip, an aluminum substrate with the LED chip mounted thereon, a heat sink in close contact with the aluminum substrate, and an LED driving power supply. The LED light source lamp has obvious energy-saving effect compared with the lamp with a common light source, but has small energy-saving potential under the condition of actual illumination. In recent years, LED lamps are widely used not only in civil lamps but also in industrial lighting. An important field of industrial lighting is the lighting of explosion-proof places, which, in addition to the general lighting requirements, also are very concerned about the lifetime of the light source of the lamp.

At present, with the continuous progress of the LED light source lighting technology, the service life of the LED light source is greatly prolonged, the technology of the heat dissipation design of the lamp lighting lamp is improved, and the actual LED light source has breakthrough in the service life of the lamp. The lifetime of the entire fixture is sometimes determined by the lifetime of the driver of the LED.

Traditional explosion-proof lamps and lanterns of LED often adopt three cavity structures, and light source chamber, driver chamber and wiring chamber arrange in proper order, nevertheless because of the driver chamber is located between two chambeies, the heat dissipation condition is not very ideal, can influence the life-span of LED driver to influence the life-span of whole explosion-proof lamps and lanterns of LED, also can bring the improvement of the cost of maintenance etc..

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: aiming at the defects of the prior art, the two-cavity type LED explosion-proof lamp used in the explosion-proof dangerous place is provided to improve the heat dissipation efficiency of the LED explosion-proof lamp driver, and further improve the luminous efficiency and the service life of the LED lamp.

The utility model adopts the following technical scheme for solving the technical problems:

the utility model provides a two-cavity type LED explosion-proof lamp, which comprises a combined cavity positioned at the upper part and a light source cavity positioned at the lower part, wherein: the top of the joint cavity is provided with an LED driver and a sealing structure for encapsulating the LED driver, and the bottom of the joint cavity is provided with a binding post; the top in light source chamber is provided with LED light source board, and the bottom adopts transparent piece to seal.

Furthermore, on the two-cavity type LED explosion-proof lamp, the combined cavity is formed by enclosing a cavity body and a cavity cover arranged at the top of the cavity body, and the cavity cover is detachably connected with the cavity body through a plurality of fastening screws arranged at intervals.

Further preferably, on the two-cavity LED explosion-proof lamp, the cavity comprises an upper cavity and a lower cavity which are integrally formed, wherein:

the middle part of the top end face of the upper cavity is provided with a groove, and the groove and the cavity cover at the top of the groove form the combined cavity;

the middle part of the bottom end face of the lower cavity is provided with a groove, and the groove and the transparent piece at the bottom form the light source cavity.

Further preferably, on the two-cavity type LED explosion-proof lamp, the peripheral wall of the upper cavity is provided with a plurality of wiring holes arranged at intervals along the circumferential direction thereof, wherein:

the wiring hole is transversely communicated with the bottom of the cavity, and a wiring sealing ring is embedded at the inner side end of the wiring hole.

Further more preferably, on the two-cavity type LED explosion-proof lamp, an outer end of the wiring hole is connected with a compression nut through a thread, wherein:

the compression nut is of a hollow structure, and the inner side end of the compression nut is connected with the outer side end of the wiring sealing ring in an abutting mode.

Further more preferably, two chambeies formula LED explosion-proof lamp on, the periphery interval of upper portion cavity is equipped with a plurality of locking screw holes and a plurality of locking bolt, wherein:

the lower end of the locking screw hole is vertically communicated with the corresponding wiring hole;

the locking bolt threads are arranged in the corresponding locking screw holes, and the lower ends of the locking bolt threads are arranged corresponding to the compression nuts in the wiring holes.

Further preferably, on the two-cavity type LED explosion-proof lamp, the cavity cover includes an integrally formed top plate and a hollow groove body, wherein:

the top plate is arranged at the top of the hollow groove body, and a plurality of mounting holes corresponding to the fastening screws are formed in the outer periphery of the top plate;

the hollow groove body is embedded in the upper cavity below the hollow groove body, and the hollow groove body and the groove of the upper cavity form the combined cavity.

Further preferably, on the two-cavity LED explosion-proof lamp, the LED light source board is fixed to the top of the lower cavity by screws, and is electrically connected to the LED driver at the bottom of the upper cavity by a wire passing through the top of the lower cavity.

Further preferably, on the two-cavity type LED explosion-proof lamp, the outer edge of the transparent member is detachably connected to the bottom of the lower cavity through a lamp ring, and a contact portion between the transparent member and the lamp ring and between the transparent member and the lower cavity is sealed by a sealing ring.

Still further preferably, on the two-cavity type LED explosion-proof lamp, the lamp ring is fixed to the bottom of the lower cavity by using a plurality of structural screws or fasteners.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical effects:

the utility model provides a two-cavity LED explosion-proof lamp, which is characterized in that a specific cavity and cavity cover structural design is adopted, the lamp is configured into a two-cavity structure with a combined cavity and a light source cavity, a driver and a binding post are arranged in the combined cavity, the driver is fixedly arranged on the cavity cover, the heat of the LED driver can be effectively dissipated to the outside of the cavity cover in a conduction mode, the binding post is used for external wiring and wiring of an LED light source plate and the LED driver, and a compression nut and a wiring sealing ring are adopted to compress an external power supply cable when the external power supply cable is LED in so as to meet the requirement of explosion-proof performance; the two-cavity type LED explosion-proof lamp effectively improves the heat dissipation efficiency of the LED driver, and further indirectly improves the luminous efficiency and the service life of the LED lamp.

Drawings

FIG. 1 is a schematic mechanism diagram of a conventional three-cavity LED explosion-proof lamp;

FIG. 2 is a schematic structural diagram of a two-cavity LED explosion-proof lamp of the present invention;

FIG. 3 is a schematic diagram of a cavity of a two-cavity LED explosion-proof lamp according to the present invention;

FIG. 4 is a schematic mechanism diagram of a middle cover of a two-cavity LED explosion-proof lamp according to the present invention;

wherein the reference symbols are:

10-a light source cavity; 20-driver cavity, 21-driver; 30-wiring cavity, 31-wiring terminal.

100-joint cavity, 110-cavity, 111-upper cavity, 112-lower cavity, 113-wiring hole, 114-locking screw hole, 115-locking bolt, 120-cavity cover, 121-top plate, 122-hollow groove body, 123-mounting hole, 130-LED driver, 140-sealing glue structure, 150-wiring post, 160-compression nut, 170-wiring sealing ring and 180-fastening screw; 200-light source cavity, 210-lamp ring, 220-transparent piece, 230-LED light source board.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a conventional LED explosion-proof lamp usually adopts a three-cavity structure, in which a light source cavity 10, a driver cavity 20 and a wiring cavity 30 are sequentially arranged, a driver 21 is disposed in the driver cavity 20, and a terminal 321 is disposed in the wiring cavity 30. However, since the driver cavity 20 is located between the light source cavity 10 and the wiring cavity 30, on one hand, the heat of the light source cavity 10 will affect the temperature rise of the driver 21, and on the other hand, the heat cannot directly contact with the outside, which will affect the service life of the driver 21, thereby affecting the service life of the whole LED explosion-proof lamp and also increasing the cost of maintenance and the like.

In this regard, as shown in FIG. 2, in some embodiments, a two-cavity LED explosion-proof light fixture is provided that generally includes an upper uniting cavity 100 and a lower light source cavity 200 in an effort to improve efficient heat dissipation.

Specifically, the top of the joint chamber 100 is provided with an LED driver 130 and an encapsulation structure 140 encapsulating the LED driver 130, and the bottom thereof is provided with a terminal 150. The LED driver 130 and the terminal 150 are installed in the joint cavity 100, the LED driver 130 is fixedly installed on the cavity cover 120, heat of the LED driver 130 can be effectively dissipated to the outside of the cavity cover 120 through conduction, and the terminal 150 is used for external wiring and wiring of the LED light source board 230 and the LED driver 130.

The top of the light source cavity 200 is provided with an LED light source plate 230, the bottom of the light source cavity is sealed by a transparent piece 220, and the transparent piece 220 is a transparent glass piece or a plastic piece. The LED light source plate 230 is installed on the back of the cavity of the combined cavity of the driver and the binding post 101 through screws, and silicone grease with high heat-conducting property is coated between the LED light source plate and the cavity.

In some embodiments, as shown in fig. 2, the joint chamber 100 is enclosed by a chamber body 110 and a chamber cover 120 disposed on top of the chamber body 110, and the chamber cover 120 is detachably connected to the chamber body 110 by a plurality of fastening screws 180 arranged at intervals. After the wiring terminal 150 is installed in the joint cavity 100 and the LED driver 130 is installed in the cavity cover 120, the encapsulation structure 140 is encapsulated and encapsulated, the cavity cover 120 is hermetically fixed on the cavity 110, and a sealing ring is used for sealing a cylindrical joint surface of the cavity 110 and the cavity cover 120.

In some embodiments, as shown in fig. 3, the chamber 110 includes an upper chamber 111 and a lower chamber 112 that are integrally formed, and the upper chamber 111 and the lower chamber 112 are made of an aluminum alloy material or a stainless steel material and are integrally formed. Wherein, the middle part of the top end surface of the upper cavity 111 is provided with a groove, and the groove and the cavity cover 120 at the top part thereof form the combined cavity 100; the middle of the bottom end surface of the lower cavity 112 is provided with a groove, and the groove and the transparent member 220 at the bottom form the light source cavity 200.

In order to meet the wiring requirements of the LED explosion-proof lamp, as shown in fig. 3, a plurality of wiring holes 113 are formed in the peripheral wall of the upper cavity 111 along the circumferential direction thereof. The wiring hole 113 is transversely communicated with the bottom of the cavity 110, a wiring sealing ring 170 is embedded at the inner side end of the wiring hole, and a wire passes through the wiring sealing ring 170 and is connected with the LED driver 130 in the joint cavity 100.

In addition, in order to ensure the stability of the external cable of the LED driver 130, a compression nut 160 is threadedly connected to the outer end of the wiring hole 113, and the wiring sealing ring 170 is compressed by the compression nut 160 to deform, so as to compress the cable therein, thereby achieving the sealing effect. It should be noted that the gland nut 160 is a hollow structure for passing a cable, and the inner end thereof is connected to the outer end of the connection sealing ring 170. The compression nut 160 and the wiring sealing ring 170 are adopted to compress when an external power supply cable is led in so as to meet the requirement of explosion-proof performance.

Further, the compression nut 160 is prevented from loosening, which causes a problem of a gap at the terminal sealing ring 170. A plurality of locking screw holes 114 and a plurality of locking bolts 115 are spaced at the outer circumference of the upper chamber 111. The lower end of the locking screw hole 114 is vertically communicated with the corresponding wiring hole 113; the locking bolt 115 is threadedly disposed in the corresponding locking screw hole 114, and the lower end thereof is disposed corresponding to the compression nut 160 in the wire connection hole 113. The tightening nut 160 is tightened and fixed in the wire hole 113 by rotating the tightening bolt 115 to maintain a constant tightening of the wire packing 170.

In one embodiment, as shown in fig. 4, the cavity cover 120 includes a top plate 121 and a hollow groove 122 that are integrally formed, and the top plate 121 and the hollow groove 122 are made of an aluminum alloy material or a stainless steel material and are integrally formed. The top plate 121 is arranged at the top of the hollow groove 122, and a plurality of mounting holes 123 corresponding to the fastening screws 180 are formed in the outer periphery of the top plate; the hollow groove 122 is embedded in the upper cavity 111 below, and forms the joint cavity 100 with the groove of the upper cavity 111.

The LED light source plate 230 is fixed to the top of the lower cavity 112 by screws, and silicone grease with high thermal conductivity is coated on the contact position between the back of the LED light source plate 230 and the top of the lower cavity 112, so as to improve the heat dissipation efficiency of the LED light source plate 230. In addition, the LED light source board 230 is electrically connected to the LED driver 130 at the bottom of the upper cavity 111 through a wire passing through the top of the lower cavity 112.

In some embodiments, as shown in fig. 2, the outer edge of the transparent member 220 is detachably connected to the bottom of the lower cavity 112 through the lamp ring 210, and the contact portion between the lamp ring 210 and the lower cavity 112 is sealed by a sealing ring, the lamp ring 210 is made of stainless steel or aluminum alloy, and the sealing ring is made of silicon. Preferably, the bezel 210 is fixed to the bottom of the lower cavity 112 by a plurality of screws 211, or fixed to the bottom of the lower cavity 112 by a snap-fit method.

According to the two-cavity type LED explosion-proof lamp, the lamp is configured into the two-cavity type structure with the combined cavity and the light source cavity by adopting the specific cavity body and cavity cover structure design, so that the heat dissipation efficiency of the LED driver can be effectively improved, the light emitting efficiency of the LED lamp is indirectly improved, and the service life of the LED lamp is prolonged.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, and other structures can refer to common designs, and under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

finally, the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the utility model, and any modifications, equivalents, improvements and the like which are within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Two-chamber LED explosion-proof light fixture, comprising a joint chamber (100) in the upper part and a light source chamber (200) in the lower part, wherein: the top of the combination cavity (100) is provided with an LED driver (130) and a sealing glue structure (140) for encapsulating the LED driver (130), and the bottom of the combination cavity is provided with a binding post (150); the top of the light source cavity (200) is provided with an LED light source plate (230), and the bottom of the light source cavity is sealed by a transparent piece (220).

2. The two-chamber type LED explosion-proof lamp as claimed in claim 1, wherein the joint chamber (100) is enclosed by a chamber body (110) and a chamber cover (120) disposed on the top of the chamber body (110), and the chamber cover (120) is detachably connected to the chamber body (110) through a plurality of fastening screws (180) arranged at intervals.

3. The two-cavity LED explosion-proof lamp as claimed in claim 2, wherein the cavity (110) comprises an upper cavity (111) and a lower cavity (112) which are integrally formed, wherein:

the middle part of the top end surface of the upper cavity (111) is provided with a groove, and the groove and the cavity cover (120) at the top of the groove form the combined cavity (100);

the middle part of the bottom end surface of the lower cavity (112) is provided with a groove, and the groove and the transparent piece (220) at the bottom form the light source cavity (200).

4. The two-cavity LED explosion-proof lamp as claimed in claim 3, wherein the peripheral wall of the upper cavity (111) is provided with a plurality of wiring holes (113) arranged at intervals along the circumference, wherein:

the wiring hole (113) is transversely communicated with the bottom of the cavity (110), and a wiring sealing ring (170) is embedded at the inner side end of the wiring hole.

5. The two-chamber LED explosion-proof lamp as claimed in claim 4, wherein the outer end of the wiring hole (113) is threaded with a compression nut (160), wherein:

the compression nut (160) is of a hollow structure, and the inner side end of the compression nut is connected with the outer side end of the wiring sealing ring (170) in an abutting mode.

6. The two-cavity LED explosion-proof lamp as claimed in claim 5, wherein the upper cavity (111) is provided with a plurality of locking screw holes (114) and a plurality of locking bolts (115) at intervals on the periphery, wherein:

the lower end of the locking screw hole (114) is vertically communicated with the corresponding wiring hole (113);

the locking bolt (115) is arranged in the corresponding locking screw hole (114) in a threaded manner, and the lower end of the locking bolt is arranged corresponding to the compression nut (160) in the wiring hole (113).

7. The two-cavity LED explosion-proof lamp as claimed in claim 2, wherein the cavity cover (120) comprises an integrally formed top plate (121) and a hollow groove body (122), wherein:

the top plate (121) is arranged at the top of the hollow groove body (122), and a plurality of mounting holes (123) corresponding to the fastening screws (180) are formed in the outer periphery of the top plate;

the hollow groove body (122) is embedded in an upper cavity (111) below the hollow groove body, and the hollow groove body and a groove of the upper cavity (111) form the combined cavity (100).

8. The two-cavity LED explosion-proof lamp as claimed in claim 3, wherein the LED light source board (230) is fixed on the top of the lower cavity (112) by screws and is electrically connected with the LED driver (130) at the bottom of the upper cavity (111) by a conducting wire passing through the top of the lower cavity (112).

9. The two-chamber LED explosion-proof lamp as claimed in claim 8, wherein the outer edge of the transparent member (220) is detachably connected to the bottom of the lower chamber (112) through a lamp ring (210), and the contact part between the lamp ring (210) and the lower chamber (112) is sealed by a sealing ring.

10. The two-cavity LED explosion-proof lamp as claimed in claim 9, wherein the lamp ring (210) is fixed to the bottom of the lower cavity (112) by a plurality of structural screws (211) or a snap-fit manner.