CN111853619A - Nuclear island high ceiling lamp - Google Patents

Abstract

The invention provides a nuclear island high dome lamp, which belongs to the field of lighting equipment and comprises an LED lighting assembly, a driving module, a radiation-proof box covered on the driving module, a main shell for supporting the radiation-proof box and a light-transmitting cover covered at the front end of the main shell; the radiation protection box is installed at the rear end of the main shell, the LED lighting assembly is installed at the front end of the main shell, the driving module is installed in the radiation protection box, the front end of the radiation protection box is provided with a hole, and the LED lighting assembly and the driving module are electrically connected with a lead which penetrates through the hole and is hermetically connected with the radiation protection box. According to the nuclear island high ceiling lamp provided by the invention, the driving module is arranged in the radiation-proof box, so that the influence of radiation on the driving module is reduced; and the LED lighting assembly is arranged at the front end of the main shell, so that the radiation-proof box and the LED lighting assembly are separated through the main shell, the heat influence of the LED lighting assembly on the driving module is reduced, the lighting fixture can have longer service life in a nuclear radiation environment, the lighting brightness of the nuclear island lighting is improved, and the energy consumption is reduced.

Description

Nuclear island high ceiling lamp

Technical Field

The invention belongs to the technical field of lighting equipment, and particularly relates to a nuclear island high dome lamp.

Background

The high ceiling lamp is installed on a ceiling, and is widely used due to the fact that the installation position of the high ceiling lamp occupies a small space and is convenient to assemble and disassemble. In special occasions, such as nuclear reactor buildings of nuclear power stations, nuclear fuel buildings and the like with radiation, high-top lamps are widely applied. The traditional nuclear island high ceiling lamp generally adopts a metal halide lamp, and the power consumption is higher and the illumination is lower. At present, a light source with low power consumption and high illumination is an LED light source, but in the traditional nuclear island high dome lamp structure, an installation cavity is formed between a lamp body and a lampshade, and an illumination assembly and a driving module are installed in the cavity. However, this structure may make the driving module susceptible to thermal influence and external radiation interference of the LED lighting assembly, thereby affecting the service life.

Disclosure of Invention

The invention aims to provide a nuclear island high-top lamp, which aims to solve the technical problems that a driving module of an LED light source is easily influenced by heat and external radiation of an LED lighting assembly in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: the nuclear island high dome lamp comprises an LED lighting assembly, a driving module electrically connected with the LED lighting assembly, a radiation-proof box covering the driving module, a main shell supporting the radiation-proof box and a light-transmitting cover covering the front end of the main shell; the radiation protection box is installed at the rear end of the main shell, the LED illuminating assembly is installed at the front end of the main shell, the driving module is installed in the radiation protection box, a hole is formed in the front end of the radiation protection box, and the LED illuminating assembly and the driving module are electrically connected with a lead which penetrates through the hole and is in sealed connection with the radiation protection box.

Furthermore, the radiation protection box comprises a rear shell and a rear cover covering the rear shell, a containing cavity is arranged in the middle of the rear shell in a backward concave mode, the driving module is installed in the containing cavity, the rear cover covers the containing cavity, the rear shell and the rear cover are connected with the main shell, and the opening is formed in the rear cover.

Furthermore, the line hole has been seted up to the trailing flank of backshell, the radiation protection box still including be used for the cooperation lid in back shroud on the line hole crosses, install the connection terminal in the back shroud, the connection terminal through passing the conductor wire in line hole with the drive module electrical property links to each other, install on the back shroud and be used for supplying the outside electric wire to pass through and sealed the joint of this outside electric wire, back shroud demountable installation in on the backshell.

Furthermore, the radiation-proof box is made of a copper material, a lead material or a copper-lead alloy material.

Furthermore, the front end of the peripheral side of the rear shell protrudes outwards to form a connecting ring, a plurality of first through holes are formed in the connecting ring, second through holes are formed in positions, corresponding to the first through holes, of the rear cover, connecting columns are arranged on the main shell, corresponding to the first through holes, and the rear shell is connected with the main shell through a plurality of screws which penetrate through the first through holes and the corresponding second through holes respectively and are connected with the corresponding connecting columns.

Further, the radiation protection box further comprises a pressing ring used for pressing and fixing the driving module in the rear shell, a mounting column is arranged at the bottom of the rear shell, the pressing ring is fixed on the mounting column through a stud, and a concave cavity for accommodating a nut of the stud is formed in the middle of the pressing ring in a backward concave mode.

Furthermore, the main shell comprises a front cover, a plurality of radiating fins arranged on the rear side surface of the front cover and an annular shell, the outer side of each radiating fin extends out of the front cover along the radial direction of the front cover, a radiating flow channel is formed between two adjacent radiating fins on the rear side of the front cover, and the annular shell is connected with the outer side of each radiating fin; the LED lighting assembly is arranged on the front cover, and the radiation-proof box is connected with the rear end of the radiating fin.

Further, the printing opacity cover includes that the middle part is concave forward and is equipped with the CD that passes through, the periphery that passes through the CD rear end extends outward and has the collar, set up a plurality of first holes that pass on the collar, correspond on the protecgulum and set up a plurality of screw holes, the collar passes respectively through a plurality of first hole and with corresponding the screw installation on screw hole limit on the protecgulum.

Furthermore, the LED lighting assembly comprises a copper substrate arranged at the front end of the main shell and LED light sources which are arranged on the copper substrate and distributed annularly.

Furthermore, the driving module comprises a driving circuit, and the driving circuit comprises a voltage regulating module connected with an external power supply, a rectifying module connected with the voltage regulating module, a filtering module connected with the rectifying module, and an overload protection module respectively connected with the filtering module and the LED lighting assembly; the voltage regulating module comprises a first fuse and a transformer, the rectifying module comprises at least two bridge stacks composed of diodes, the filtering module comprises a plurality of capacitors, and the overload protection module comprises a second fuse and a plurality of piezoresistors.

The nuclear island high ceiling lamp provided by the invention has the beneficial effects that: compared with the prior art, the nuclear island high dome lamp is provided with the radiation-proof box, the main shell is arranged to support the radiation-proof box, the front end of the main shell is provided with the light-transmitting cover, and the driving module is arranged in the radiation-proof box, so that the influence of radiation on the driving module is reduced; the LED lighting assembly is arranged at the front end of the main shell, so that the radiation-proof box and the LED lighting assembly are separated through the main shell, and the thermal influence of the LED lighting assembly on the driving module is reduced; meanwhile, the driving module is located on the rear side of the LED lighting assembly, the driving module can be isolated by the LED lighting assembly to a certain extent, a part of radiation is isolated by the main shell and the light-transmitting cover, the driving module is better prevented from being influenced by the radiation, a better radiation-proof effect is obtained, the lighting fixture with the LED lighting assembly can have longer service life in a nuclear radiation environment, the LED lamp can be used in the nuclear island for a long time, and the nuclear island lighting can achieve the effects of improving lighting brightness and reducing lighting power consumption.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention, 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 nuclear island overhead lamp according to an embodiment of the present invention;

FIG. 2 is a schematic front view of the nuclear island overhead lamp of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 3;

fig. 5 is a first schematic diagram illustrating an exploded structure of a nuclear island overhead lamp according to an embodiment of the present invention;

fig. 6 is an enlarged view of a portion C in fig. 5;

fig. 7 is a schematic diagram of an exploded structure of a nuclear island overhead lamp according to an embodiment of the present invention;

fig. 8 is a schematic cross-sectional structural view of a radiation-proof box in a nuclear island high-top lamp according to an embodiment of the present invention;

fig. 9 is a first schematic diagram illustrating an explosive structure of a radiation-proof box in a nuclear island high-top lamp according to an embodiment of the present invention;

fig. 10 is a schematic diagram of an explosion structure of a radiation-proof box in a nuclear island high-top lamp according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a driving circuit according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

100-nuclear island high dome lamp; 10-a main shell; 101-a heat dissipation flow channel; 11-an annular housing; 12-a front cover; 121-loop sleeve; 122-a wire arrangement groove; 123-groove body; 124-channel; 13-heat dissipation fins; 131-a support sheet; 132-a connecting column; 15-a light-transmissive cover; 150-a sealed space; 151-optical disc; 152-a mounting ring; 161-a wafer ring; 162-a seal ring;

20-radiation protection box; 21-rear shell; 210-a housing chamber; 211-connecting ring; 212-mounting posts; 213-hook; 214-a wire through hole; 215-a second connecting piece; 22-rear cover; 221-opening a hole; 222-a guide sleeve; 223-a shim ring; 23-a pressure ring; 231-cavities; 232-stud; 233-buffer pad; 24-a rear cover; 241-hanging and buckling; 242 — a first connecting tab; 243-linker; 244-a gasket; 25-a wire holder;

3-a drive module; 301-a voltage regulation module; 302-a rectification module; 303-a filtering module; 304-an overload protection module;

40-an LED lighting assembly; 41-copper substrate; 42-LED light source; 43-a platen;

50-a mounting assembly; a 51-U shaped bracket; 52-hoisting rings; 53-a first toothed disc; 54-second toothed disc.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention 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 invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured 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 be indirectly connected to the other element.

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 is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" or "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 10 together, a nuclear island high dome lamp 100 according to the present invention will now be described. The nuclear island high dome lamp 100 comprises an LED illuminating assembly 40, a driving module 3, a radiation-proof box 20, a main shell 10 and a light-transmitting cover 15; the driving module 3 is electrically connected to the LED lighting assembly 40, and the driving module 3 is used for driving the LED lighting assembly 40 to make the LED lighting assembly 40 emit light. The drive module 3 is arranged in the radiation-proof box 20, and the drive module 3 is covered by the radiation-proof box 20, so that a good radiation-proof effect is achieved; the radiation protection box 20 is installed at the rear end of the main casing 10, and the radiation protection box 20 is supported by the main casing 10; the LED lighting assembly 40 is mounted at the front end of the main housing 10, and the light-transmissive cover 15 covers the front end of the main housing 10 to cover the LED lighting assembly 40 through the light-transmissive cover 15. The front end of the radiation protection box 20 is provided with an opening 221, and the LED lighting assembly 40 and the driving module 3 are electrically connected with a wire which penetrates through the opening 221 and is hermetically connected with the radiation protection box 20, so that the radiation protection box 20 keeps sealed, and the radiation protection effect is improved.

When the LED illuminating assembly is assembled, the LED illuminating assembly 40 is arranged at the front end of the main shell 10, and the light-transmitting cover 15 is fixed on the main shell 10; it suffices to mount the drive module 3 in the radiation preventing box 20 and mount the radiation preventing box 20 in the rear end of the main casing 10.

Compared with the prior art, the nuclear island high dome lamp 100 provided by the invention has the advantages that the radiation-proof box 20 is arranged, the main shell 10 is arranged to support the radiation-proof box 20, the light-transmitting cover 15 is arranged at the front end of the main shell 10, and the driving module 3 is arranged in the radiation-proof box 20, so that the influence of radiation on the driving module 3 is reduced; the LED lighting assembly 40 is arranged at the front end of the main shell 10, so that the radiation protection box 20 is separated from the LED lighting assembly 40 through the main shell 10, and the thermal influence of the LED lighting assembly 40 on the driving module 3 is reduced; meanwhile, the driving module 3 is located on the rear side of the LED lighting assembly 40, the driving module 3 can also be isolated by the LED lighting assembly 40 to a certain extent, the main shell 10 and the light-transmitting cover 15 isolate part of radiation, the driving module 3 is better prevented from being influenced by the radiation, a better radiation-proof effect is obtained, the lighting lamp with the LED lighting assembly 40 can have longer service life in a nuclear radiation environment, the LED lamp can be used for a long time in a nuclear island, and the effect of improving lighting brightness and reducing lighting power consumption in the nuclear island lighting can be achieved.

Further, referring to fig. 5 to 10, as an embodiment of the nuclear island high-top lamp 100 provided by the present invention, the radiation-proof box 20 includes a rear casing 21 and a rear cover 22 covering the rear casing 21. The middle part of the rear case 21 is concavely provided with an accommodating cavity 210, and the driving module 3 is installed in the accommodating cavity 210. The rear cover 22 covers the receiving cavity 210, the rear shell 21 and the rear cover 22 are connected to the main shell 10, and the opening 221 is formed in the rear cover 22 for the wire to pass through. In this embodiment, in order to enhance the nuclear radiation protection capability of the radiation protection box 20, the rear case 21 and the rear cover 22 are made of copper materials. In other embodiments, the back shell 21 and the back cover 22 may also be made of a material with nuclear radiation protection function, such as a lead material or a copper-lead alloy material. As can be seen from fig. 5 or 7, the rear case 21 includes an annular portion and a flat surface portion. Since the rear case 21 is made of a high-density metal material, if the rear case 21 is integrally formed, it will have high requirements for manufacturing processes and processing equipment. Therefore, in the present embodiment, the annular portion and the flat surface portion of the rear case 21 are each separately formed. After the circular ring part and the plane part of the rear shell 21 are formed independently, the plane part is embedded at the upper end of the circular ring part and is pressed and assembled, and meanwhile, the rear shell is locked by fixing pieces such as screws, and the manufacturing process of the rear shell 21 is simplified. Therefore, the radiation-proof box 20 is simple in structure, convenient to process and manufacture, and convenient to install and fix the driving module 3.

Further, referring to fig. 5 to 10, as a specific embodiment of the nuclear island overhead lamp 100 provided by the present invention, a rear side surface of the rear shell 21 is provided with a wire passing hole 214, the radiation-proof box 20 further includes a rear cover 24, the rear cover 24 is used for covering the wire passing hole 214 in a matching manner, the rear cover 24 is provided with a wire holder 25, the wire holder 25 is electrically connected to the driving module 3 through a conductive wire passing through the wire passing hole 214, the rear cover 24 is provided with a connector 243 for an external electric wire to pass through and seal the external electric wire, and the rear cover 24 is detachably mounted on the rear shell 21; the rear case 21 is provided with a wire hole 214, and a wire holder 25 is disposed to electrically connect the wire holder 25 and the driving module 3 for connecting an external wire. The rear cover 24 is disposed to cover the wire passing hole 214, and the joint 243 is disposed on the rear cover 24 to better seal the wire passing hole 214, and to seal the rear cover 24 when an external electric wire passes through the joint 243, so as to better seal the accommodating cavity 210. In the present embodiment, the rear cover 24 is also made of a copper material, as is the case with the rear case 21 and the rear cover 22. In other embodiments, the rear cover 24 may also be made of a material with nuclear radiation protection function, such as a lead material or a copper-lead alloy material, so as to improve the radiation protection effect. And the rear cover 24 is detachably coupled to the rear case 21 so that the external electric wires are connected to the wire holder 25 after passing through the rear cover 24. Further, the joint 243 is a rubber bushing, or a gurney joint, to seal the electric wire when the external electric wire passes through the joint 243.

Further, referring to fig. 5 to 10, as an embodiment of the nuclear island high ceiling lamp 100 provided by the present invention, a hanging buckle 241 is disposed on the rear cover 24, and a hanging hook 213 matched with the hanging buckle 241 is disposed on the rear shell 21, so that the rear cover 24 is mounted on the rear shell 21 by matching the hanging buckle 241 with the hanging hook 213. This configuration also facilitates the shape of the rear cover 24 to be set as desired. Of course, in other embodiments, the rear cover 24 may be mounted on the rear housing 21 by screw threads.

Further, referring to fig. 5 to 10, as an embodiment of the nuclear island high-top lamp 100 provided by the present invention, a hanging buckle 241 is disposed on one side of the rear cover 24, a first connecting piece 242 is convexly disposed on the other side of the rear cover 24, a second connecting piece 215 is correspondingly disposed on the rear shell 21, and the first connecting piece 242 and the second connecting piece 215 are axially connected to hinge the other side of the rear cover 24 and the rear shell 21, so that the rear cover 24 is prevented from falling after the rear cover 24 is opened.

Further, referring to fig. 5 to 10, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, a sealing gasket 244 is disposed between the rear cover 24 and the rear side surface of the rear housing 21. A gasket 244 is provided to enhance the sealing effect.

Further, referring to fig. 5 to 10, as an embodiment of the nuclear island overhead lamp 100 provided by the present invention, a guide sleeve 222 for guiding and sealing the wires is disposed at a position corresponding to the opening 221 on the front side of the rear cover 22. So that the wires pass through the opening 221 and pass through the guide sleeve 222 to extend into the main housing 10, and when the wires pass through the guide sleeve 222, the wires can be better sealed and sealed by the guide function of the guide sleeve 222, and radiation can be prevented from directly entering the accommodating cavity 210.

Further, referring to fig. 5 to 10, as a specific embodiment of the nuclear island high dome lamp 100 provided by the present invention, a connection ring 211 is protruded outwardly from a front end of a peripheral side of the rear shell 21, the connection ring 211 is provided with a plurality of first through holes, a second through hole is provided on the rear cover 22 at a position corresponding to each first through hole, a connection post 132 is provided on the main shell 10 at a position corresponding to each first through hole, the rear shell 21 is connected to the main shell 10 through a plurality of screws respectively passing through each first through hole and the corresponding second through hole to connect with the corresponding connection post 132, so that the rear shell 21 and the rear cover 22 are fixedly connected, and meanwhile, the rear shell 21 is also conveniently mounted on the main shell 10, and further, the radiation-proof box 20 is mounted on the main shell 10. Further, a gasket ring 223 is disposed between the connection ring 211 and the rear cover 22 to better seal the rear cover 22 and the rear case 21.

Further, referring to fig. 5 to fig. 10, as a specific embodiment of the nuclear island overhead lamp 100 provided by the present invention, the radiation-proof box 20 further includes a pressing ring 23 for pressing and fixing the driving module 3 in the rear casing 21, the bottom of the rear casing 21 is provided with a mounting post 212, the pressing ring 23 is fixed on the mounting post 212 through a stud 232, and a cavity 231 for accommodating a nut of the stud 232 is recessed rearward in the middle of the pressing ring 23. During assembly, the driving module 3 may be placed behind the rear case 21 and connected to the mounting post 212 through the stud 232 to press the pressing ring 23 on the driving module 3, so as to fix the driving module 3 in the rear case 21, thereby ensuring that the driving module 3 is stably mounted. The concave cavity 231 is arranged on the press ring 23 to accommodate the screw cap of the stud 232, so that the flat-plate-shaped rear cover 22 can be used, the rear cover 22 is simpler to process and manufacture, the cost is reduced, and the volume of the radiation-proof box 20 can be reduced. Further, a buffer pad 233 is disposed between the pressing ring 23 and the driving module 3, so that the sealing effect can be increased, the driving module 3 is protected by the elastic function of the buffer pad 233, and the impact resistance and the vibration resistance are improved.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, the main casing 10 includes a front cover 12, a plurality of heat dissipation fins 13 disposed on a rear side surface of the front cover 12, and an annular casing 11, where the annular casing 11 is connected to outer sides of the heat dissipation fins 13; the LED lighting assembly 40 is arranged on the front cover 12, and the radiation-proof box 20 is connected with the rear end of the radiating fin 13; the front cover 12 is arranged to facilitate installation and support of the LED lighting assembly 40, and meanwhile, heat emitted by the LED lighting assembly 40 is conducted to the radiating fins 13, so that radiating efficiency is improved, the radiation protection box 20 is supported through the radiating fins 13, and heat influence of the LED lighting assembly 40 on the radiation protection box 20 can be reduced.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island ceiling light 100 provided by the present invention, a ring sleeve 121 is disposed on a rear side surface of the front cover 12, the guide sleeve 222 is inserted into the ring sleeve 121, and a wire arrangement groove 122 communicated with the ring sleeve 121 is disposed on the front cover 12. The wires pass through the ring sleeve 121 and are led out from the wire grooves 122 of the manager, so that the sealing is convenient, and the wires can be arranged.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, a groove 123 is recessed backward on the front cover 12, an opening is opened on a side wall of the groove 123, and a channel 124 is formed by a space and the opening in the groove 123. A groove 123 is formed on the front cover 12 and an opening is opened at a side wall of the groove 123 to form a passage 124, so that when a wire passes through the passage 124, it is better sealed and external radiation or impurities are prevented from directly entering the light-transmissive cover 15.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, the annular housing 11, the front cover 12 and the heat dissipation fins 13 are integrally formed, so as to ensure good strength of the main housing 10 and facilitate processing and manufacturing.

Further, referring to fig. 2 to fig. 7, as an embodiment of the nuclear island overhead lamp 100 provided by the present invention, the outer side of each heat dissipation fin 13 extends out of the front cover 12 along the radial direction of the front cover 12, and a heat dissipation channel 101 is formed between two adjacent heat dissipation fins 13 on the rear side of the front cover 12, so that air convection can be better performed, and the heat dissipation efficiency can be improved.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, the plurality of heat dissipation fins 13 are disposed at equal intervals to facilitate layout and design, and facilitate heat dissipation.

Further, referring to fig. 2 to 7, as a specific embodiment of the nuclear island high dome lamp 100 provided by the present invention, the width of each heat dissipating fin 13 is gradually enlarged from inside to outside, the front end of each heat dissipating fin 13 is connected to the front cover 12, that is, each heat dissipating fin 13 extends outward and extends from the middle region of the annular housing 11 and the position close to the front cover 12, the front side of each heat dissipating fin 13 is connected to the front cover 12, and the rear side of each heat dissipating fin 13 extends gradually backward from the middle region of the annular housing 11, so that the width of each heat dissipating fin 13 is gradually enlarged from inside to outside, so that each heat dissipating fin 13 better dissipates the heat generated by the LED lighting assembly 40. Meanwhile, the contact between the heat dissipation fins 13 and the radiation protection box 20 can be reduced, so that the thermal influence of the LED lighting assembly 40 on the driving module 3 can be better reduced.

Further, referring to fig. 2 to fig. 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, a supporting plate 131 for supporting the radiation-proof box 20 is protruded at the rear end of the outer side of the plurality of heat dissipation fins 13. The support piece 131 is provided to better support the radiation-proof box 20 and reduce the influence of the radiation-proof box 20 and the heat dissipation fins 13. Further, the plurality of support pieces 131 are provided with the connection posts 132 to fix the radiation shielding case 20.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, the light-transmitting cover 15 includes a light-transmitting disc 151 recessed forward in the middle, a mounting ring 152 extends outward from the periphery of the rear end of the light-transmitting disc 151, the mounting ring 152 is provided with a plurality of first through holes, the front cover 12 is correspondingly provided with a plurality of threaded holes, the mounting ring 152 is mounted on the front cover 12 by a plurality of screws respectively penetrating through the first through holes and being beside the corresponding threaded holes, so as to reduce the volume, and facilitate mounting the light-transmitting cover 15 on the main housing 10.

Further, referring to fig. 2 to fig. 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, a pressing ring 161 is installed on a rear side surface of the installation ring 152; the provision of the pressing ring 161 can improve the sealing effect by providing a better contact between the mounting ring 152 and the front cover 12 of the main housing 10.

Further, referring to fig. 2 to fig. 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, a sealing ring 162 is installed on a rear side surface of the installation ring 152 to improve a sealing effect, so that a sealing space 150 is formed between the front cover 12 and the light-transmitting cover 15 to better protect the LED lighting assembly 40 and reduce radiation influence. Further, a seal ring 162 is provided between the pressing ring 161 and the front cover 12.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, the LED lighting assembly 40 includes a copper substrate 41 mounted at the front end of the main housing 10 and LED light sources 42 disposed on the copper substrate 41 and distributed in a ring shape, and the heat conduction efficiency using the copper substrate 41 is high, so that heat generated by the LED light sources 42 can be quickly conducted to the front cover 12.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island overhead light 100 provided by the present invention, the copper substrate 41 is mounted on the front cover 12 by a plurality of screws, the nuclear island overhead light 100 further includes a pressing plate 43 pressing against a middle area of the copper substrate 41, the pressing plate 43 is fixedly connected to the main housing 10 by bolts, and the copper substrate 41 is provided with through holes for the bolts to pass through. A pressing plate 43 is provided to better fix the copper substrate 41 to the front cover 12.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, the nuclear island high dome lamp 100 further includes a mounting assembly 50, and the mounting assembly 50 includes a U-shaped bracket 51 whose two ends are respectively hinged to two sides of the main shell 10 and a hanging ring 52 installed in the middle of the U-shaped bracket 51. To facilitate installation and fixation of the nuclear island overhead lantern 100. Preferably, the lifting ring 52 is removably attached to the U-shaped bracket 51 for selective use in different situations.

Further, referring to fig. 2 to 7, as an embodiment of the nuclear island dome lamp 100 provided by the present invention, at least one end of the U-shaped bracket 51 is provided with a first toothed disc 53, and the main housing 10 is provided with a second toothed disc 54 hinged to the first toothed disc 53 and used for meshing with and fixing the first toothed disc 53. The first toothed disc 53 and the second toothed disc 54 are mainly used for adjusting the angle of the U-shaped bracket 51 relative to the main housing 10, radial teeth matched with each other are respectively arranged on contact surfaces of the first toothed disc 53 and the second toothed disc 54, and positioning holes are respectively correspondingly arranged on the first toothed disc 53, the second toothed disc 54 and the U-shaped bracket 51 and can be fastened through screws. When needs angle regulation, the screw is unscrewed, make first fluted disc 53 and second fluted disc 54 keep away from the certain distance each other, rotate U-shaped support 51 or main casing 10, after adjusting appointed angle, screw up the screw, make first fluted disc 53 be close to second fluted disc 54, finally mesh and fix with second fluted disc 54, no longer take place along the relative rotation of articulated shaft, this kind of angle modulation structure flexibility is strong, adjust to target in place after the location effectual, moreover, the steam generator is simple in structure, high durability and convenient use. Specifically, the second ring gear 54 is provided on the annular housing 11.

Further, referring to fig. 11 together, as a specific embodiment of the nuclear island high dome lamp 100 provided by the present invention, the driving module 3 includes a driving circuit, the driving circuit includes a voltage regulating module 301 for connecting with an external power supply, a rectifying module 302 connected with the voltage regulating module 301, a filtering module 303 connected with the rectifying module 302, and an overload protection module 304 for respectively connecting with the filtering module 303 and the LED lighting assembly 40; the voltage regulating module 301 includes a first fuse and a transformer, the rectifying module 302 includes at least two bridge stacks formed by diodes, the filtering module 303 includes a plurality of capacitors, and the overload protecting module 304 includes a second fuse and a plurality of piezoresistors. The current is reduced by the voltage regulating module 301, rectified by the rectifying module 302, and filtered by the filtering module 303 to reach the LED lighting assembly 40, and the overload protection module 304 can prevent the LED lighting assembly 40 from being damaged by excessive current or voltage.

For CMOS devices, radiation particles create defects in the insulating layer, creating accumulation of space charge, lowering the turn-on voltage of the CMOS device, deepening the inhibit voltage of the CMOS device, changing the line function and transmission performance, and resulting in an ineffective total dose. For logic circuits, single event effects (including flipping, locking, and burning) caused by high energy particles will cause control failures (e.g., attitude control), resulting in serious accidents. Voltage regulating module 301 in this embodiment, rectifier module 302, all do not have the COMS device in filter module 303 and the overload protection module 304, for no chip driver, control LED lighting assembly 40 that simultaneously can be normal, drive module 3 itself is difficult to receive the influence of radiation, the possibility that LED lamps and lanterns used in nuclear power plant's radiation environment has further been improved, make LED lamps and lanterns can work for a long time under the radiation environment, and then be favorable to solving and adopt the big problem of traditional lamps and lanterns power consumption, can improve the lighting environment simultaneously.

Specifically, referring to fig. 11, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, the voltage regulating module 301 includes a first fuse F1 and a transformer T1. The rectifier module 302 includes a bridge stack BD1 and a bridge stack BD2, the bridge stack BD1 includes a diode D1, a diode D2, a diode D3, and a diode D4, and the bridge stack BD2 includes a diode D5, a diode D6, a diode D7, and a diode D8. The filtering module 303 includes n capacitors, i.e., a capacitor C1 and a capacitor C2 … … and a capacitor Cn. The overload protection module 304 includes a second fuse F2, a varistor PR1, and a varistor PR 2.

Further, referring to fig. 11, as an embodiment of the nuclear island high dome lamp 100 provided by the present invention, the LED lighting assembly 40 includes a plurality of LED light source groups 42, and a current limiting resistor is further disposed between each LED light source group 42 and the filter module 303. Taking the figure as an example, eight groups of LED light sources 42 are provided, and correspond to the current limiting resistor R1, the current limiting resistor R2, the current limiting resistor R3, the current limiting resistor R4, the current limiting resistor R5, the current limiting resistor R6, the current limiting resistor R7, and the current limiting resistor R8, respectively. The first LED light source 42 group includes LED light sources 42L1, L2 … … L40, the second LED light source 42 group includes LED light sources 42L41, L42 … … L80, and so on, and the eighth LED light source 42 group includes LED light sources 42L281, L282 … … L320.

The commercial power passes through the first fuse F1, then is stepped down to a preset voltage through the transformer T1, and then is rectified through the bridge stack BD1 and the bridge stack BD2 to become a pulsating direct current. The pulsating direct current is filtered by a capacitor C1 and a capacitor C2 … … and a capacitor Cn, and then energy can be provided for a load (the LED light source 42 group). The second fuse F2, the piezoresistor PR1 and the piezoresistor PR2 play a role in protecting when overcurrent and overvoltage occur. The current limiting resistor R1, the current limiting resistor R2, the current limiting resistor R3, the current limiting resistor R4, the current limiting resistor R5, the current limiting resistor R6, the current limiting resistor R7 and the current limiting resistor R8 provide maximum undamaged current for each load (the LED light source 42 group). The whole circuit can still drive the LED light source 42 group to stably emit light under the radiation environment, and meanwhile, the lamp can meet the total dose of 5.0X10⁵Gy radiation test, the protection level reaches IP 65.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The nuclear island high dome lamp comprises an LED lighting assembly and a driving module electrically connected with the LED lighting assembly, and is characterized by further comprising a radiation-proof box covered on the driving module, a main shell supporting the radiation-proof box and a light-transmitting cover covering the front end of the main shell; the radiation protection box is installed at the rear end of the main shell, the LED illuminating assembly is installed at the front end of the main shell, the driving module is installed in the radiation protection box, a hole is formed in the front end of the radiation protection box, and the LED illuminating assembly and the driving module are electrically connected with a lead which penetrates through the hole and is in sealed connection with the radiation protection box.

2. The nuclear island overhead light of claim 1, wherein: the radiation-proof box comprises a rear shell and a rear cover covering the rear shell, a containing cavity is arranged in the middle of the rear shell in a backward concave mode, the driving module is installed in the containing cavity, the rear cover covers the containing cavity, the rear shell reaches the rear cover and is connected with the main shell, and the opening is formed in the rear cover.

3. The nuclear island overhead light of claim 2 wherein: the rear side face of the rear shell is provided with a wire passing hole, the radiation-proof box further comprises a rear cover used for being matched with the cover on the wire passing hole, a wire holder is installed in the rear cover and is connected with the driving module through a conductive wire passing through the wire passing hole, a connector used for allowing an external electric wire to pass through and sealing the external electric wire is installed on the rear cover, and the rear cover is detachably installed on the rear shell.

4. The nuclear island overhead light of claim 3 wherein: the radiation-proof box is made of a copper material, a lead material or a copper-lead alloy material.

5. The nuclear island overhead light of claim 2 wherein: the front end of the peripheral side of the rear shell protrudes outwards to be provided with a connecting ring, the connecting ring is provided with a plurality of first through holes, the rear cover is provided with second through holes corresponding to the positions of the first through holes, the main shell is provided with connecting columns corresponding to the positions of the first through holes, and the rear shell is connected with the main shell through a plurality of screws which respectively penetrate through the first through holes and the corresponding second through holes and are connected with the corresponding connecting columns.

6. The nuclear island overhead light of claim 2 wherein: the radiation protection box further comprises a pressing ring used for pressing and fixing the driving module in the rear shell, a mounting column is arranged at the bottom of the rear shell, the pressing ring is fixed on the mounting column through a stud, and the middle of the pressing ring is recessed backwards to form a cavity for accommodating a nut of the stud.

7. The nuclear island overhead light of any one of claims 1-6, wherein: the main shell comprises a front cover, a plurality of radiating fins arranged on the rear side surface of the front cover and an annular shell; the outer side of each radiating fin extends out of the front cover along the radial direction of the front cover, and a radiating flow channel is formed between every two adjacent radiating fins on the rear side of the front cover; the annular shell is connected with the outer side of each radiating fin; the LED lighting assembly is arranged on the front cover, and the radiation-proof box is connected with the rear end of the radiating fin.

8. The nuclear island overhead light of claim 7 wherein: the printing opacity cover includes that the middle part is concave forward and is equipped with the CD that passes through, the periphery that passes through the CD rear end extends outward and has the collar, set up a plurality of first holes that pass on the collar, correspond on the protecgulum and set up a plurality of screw holes, the collar passes respectively first hole and with corresponding screw installation on the screw hole limit on the protecgulum.

9. The nuclear island overhead light of any one of claims 1-6, wherein: the LED lighting assembly comprises a copper substrate arranged at the front end of the main shell and LED light sources which are arranged on the copper substrate and distributed annularly.

10. The nuclear island overhead light of any one of claims 1-6, wherein: the driving module comprises a driving circuit, and the driving circuit comprises a voltage regulating module connected with an external power supply, a rectifying module connected with the voltage regulating module, a filtering module connected with the rectifying module and an overload protection module respectively connected with the filtering module and the LED lighting assembly; the voltage regulating module comprises a first fuse and a transformer, the rectifying module comprises at least two bridge stacks composed of diodes, the filtering module comprises a plurality of capacitors, and the overload protection module comprises a second fuse and a plurality of piezoresistors.

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