CN207687729U - Corn lamp - Google Patents

Abstract

The utility model provides a kind of corn lamp, is related to the technical field of illuminator.Corn lamp provided by the utility model includes：Lamp cap and column lamp body；It is connected with LED lamp panel on the peripheral surface of column lamp body；Lamp cap includes lamp holder, the first back shroud and drive circuit component；First back shroud is connected on an end face of column lamp body, and lamp holder is connected to the side that the first back shroud deviates from column lamp body；Drive circuit component is installed in the cavity formed between lamp holder and the first back shroud；Line three-way hole was provided on first back shroud, the connecting line of LED lamp panel passed through line three-way hole to be connect with drive circuit component.By corn lamp provided by the utility model, the technical issues of alleviating the self-heating of the corn lamp in the presence of the prior art influences its normal work, easily cause its damage.

Description

Corn lamp

Technical field

The utility model is related to the technical fields of illuminator, more particularly, to a kind of corn lamp.

Background technology

Corn lamp is a kind of lamps and lanterns that can emit light around, and main illuminator is LED lamp bead；General LED lamp bead is maximum Light emitting angle is 120 degree, and to make lamps and lanterns shine around, multiple LED lamp beads are arranged around distribution.LED light has the energy saving, longevity The features such as life is long, small and anti-seismic performance is good is suitable for the fields such as various instructions, display, decoration, general lighting and urban landscape Scape.With the development of manufacturing technology, production cost continuously decreases, and the application of LED light is more and more extensive.It is main in LED lamp bead Device is semiconductor wafer；Semiconductor wafer consists of two parts, and one end is P-type semiconductor, and the other end is N-type semiconductor；This Two kinds of semiconductors connect to form P-N junction.When voltage acts on semiconductor wafer, electronics is moved to the areas P, in the areas P electronics With hole-recombination, energy is sent out in the form of photon, to generate luminous effect；The color of wavelength, that is, light of light, by being formed The material of P-N junction determines.Generally multiple LED lamp beads are connected on lamp plate, then lamp plate is connected to the lamp with heat sinking function On body；Multiple LED lamp beads are connect by lamp plate with electronic drive, are driven its light emission by electronic drive.

Semiconductor wafer in LED lamp bead will produce heat during electrified light emitting, and heat accumulation leads to lamps and lanterns temperature Degree increases, and excessive temperature interferes electronic drive normal work, easily causes lamps and lanterns damage.

The information for being disclosed in the background technology part is merely intended to deepen the reason to the general background technology of the utility model Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form Technology.

Utility model content

The purpose of this utility model is to provide a kind of corn lamp, with alleviate the corn lamp in the presence of the prior art from Body fever influences the technical issues of its works normally, easily causes its damage.

Corn lamp provided by the utility model includes：Lamp cap and column lamp body；It is connected with LED on the peripheral surface of column lamp body Lamp plate；Lamp cap includes lamp holder, the first back shroud and drive circuit component；First back shroud is connected to an end face of column lamp body On, lamp holder is connected to the side that the first back shroud deviates from column lamp body；Drive circuit component is installed on lamp holder and the first back shroud Between in the cavity that is formed；Line three-way hole was provided on first back shroud, the connecting line of LED lamp panel passed through line three-way hole and driving Circuit block connects.

Further, drive circuit component includes that driving power component and the circuit being electrically connected with driving power component are connect Plate；LED lamp panel is connect with circuit connecting plate；Circuit connecting plate is set between driving power component and the first back shroud.

Further, lamp cap further includes the second back shroud；Second back shroud is connected to the first back shroud and deviates from column lamp body Side, lamp holder be connected to the second back shroud deviate from the first back shroud side；After driving power component is located at lamp holder and second Between cover board, circuit connecting plate is between the second back shroud and the first back shroud.

Further, lamp cap further includes connecting cylinder；Connecting cylinder is set between the first back shroud and the second back shroud, and Both ends are abutted with the first back shroud and the second back shroud respectively.

Further, the first back shroud has first coordinated with the inner wall of connecting cylinder close to the end set of the second back shroud Annular notch；Second back shroud has the second annular coordinated with the inner wall of connecting cylinder to lack close to the end set of the first back shroud Mouthful；Connecting cylinder is sheathed on first annular notch and the second annular notch, and both ends are respectively with first annular notch towards after second The bottom surface of cover board and the second annular notch are abutted towards the bottom surface of the first back shroud.

Further, driving power component covers driving power group by heat-conducting type insulating cement sealing, heat-conducting type insulating cement Electronic component on part.

Further, driving power component and lamp holder are connected as one by heat-conducting type insulating cement.

Further, corn lamp provided by the utility model includes multiple LED lamp panels, and multiple LED lamp panels are in column lamp body The circumferentially-spaced distribution of upper edge column lamp body；Multiple line three-way holes excessively are provided on first back shroud, multiple line three-way holes of crossing are first The circumferentially-spaced distribution of back shroud upper edge column lamp body, and corresponded with multiple LED lamp panels；The connection of multiple LED lamp panels Line is each passed through corresponding line three-way hole of crossing and is connect with circuit connecting plate.

Further, the connecting line of LED lamp panel is soft arranging wire；Soft arranging wire is pierced by from line three-way hole is crossed, to the first back shroud Center position is bent, and is connect with circuit connecting plate；Line three-way hole is crossed to be provided with and soft row close to the side at the center of the first back shroud The arc transiting surface of the bending part cooperation of line.

Further, corn lamp provided by the utility model further includes dropproof connector；One end of dropproof connector It is connect with column lamp body, the other end is connect with lamp holder.

Corn lamp provided by the utility model is related to the technical field of illuminator.Corn lamp provided by the utility model Including：Lamp cap and column lamp body；It is connected with LED lamp panel on the peripheral surface of column lamp body；Lamp cap include lamp holder, the first back shroud and Drive circuit component；First back shroud is connected on an end face of column lamp body, and lamp holder is connected to the first back shroud and deviates from column The side of shape lamp body；Drive circuit component is installed in the cavity formed between lamp holder and the first back shroud；On first back shroud It was provided with line three-way hole, the connecting line of LED lamp panel passed through line three-way hole to be connect with drive circuit component.Drive circuit component is used for LED lamp panel is driven to shine, LED lamp panel shines in the heat transfer to column lamp body generated；Drive circuit component be located at lamp holder with Between first back shroud, the first back shroud separates drive circuit component and column lamp body, can reduce the heat on column lamp body Cavity diffusion, reduces the operating ambient temperature of drive circuit component, is conducive to drive circuit component where to drive circuit component Normal driving LED lamp panel shines, and then extends corn lamp service life, to alleviate the corn lamp in the presence of the prior art Self-heating the technical issues of influencing its normal work, easily causing its damage.

To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, the utility model cited below particularly compared with Good embodiment, and coordinate appended attached drawing, it is described below in detail.

Description of the drawings

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, other drawings may also be obtained based on these drawings.

Fig. 1 is the partial cutaway schematic for the corn lamp that the utility model embodiment provides；

Fig. 2 is the structural schematic diagram of lamp holder in the corn lamp that the utility model embodiment provides；

Fig. 3 is the structural schematic diagram of the first back shroud in the corn lamp that the utility model embodiment provides；

Fig. 4 is the structural schematic diagram of the second back shroud in the corn lamp that the utility model embodiment provides.

Icon：01- lamp caps；011- lamp holders；The first connecting holes of 0111-；The first back shrouds of 012-；0121- crosses line three-way hole； 0122- arc transiting surfaces；The first annular notches of 0123-；0131- driving power components；0132- circuit connecting plates；014- second Back shroud；The annular notches of 0141- second；015- connecting cylinders；016- conduction screw sockets；The dropproof connectors of 017-；02- columnar lamps Body.

Specific implementation mode

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.

It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

Fig. 1 is please referred to, the corn lamp that the utility model embodiment provides includes：Lamp cap 01 and column lamp body 02；Columnar lamp It is connected with LED lamp panel on the peripheral surface of body 02；Lamp cap 01 includes lamp holder 011, the first back shroud 012 and drive circuit component；The One back shroud 012 is connected on an end face of column lamp body 02, and lamp holder 011 is connected to the first back shroud 012 and deviates from columnar lamp The side of body 02；Drive circuit component is installed in the cavity formed between lamp holder 011 and the first back shroud 012；First rear cover Line three-way hole 0121 was provided on plate 012, the connecting line of LED lamp panel passed through line three-way hole 0121 to be connect with drive circuit component.

Specifically, drive circuit component is for driving LED lamp panel to shine, the luminous heat transfer generated of LED lamp panel to column On shape lamp body 02；Drive circuit component is located between lamp holder 011 and the first back shroud 012, and the first back shroud 012 is by driving circuit Component is separated with column lamp body 02, can be reduced the heat on column lamp body 02 to cavity diffusion where drive circuit component, be reduced The operating ambient temperature of drive circuit component is conducive to drive circuit component and works normally to drive LED lamp panel to shine, Jin Eryan The corn lamp service life that long the utility model embodiment provides.

End of the lamp holder 011 far from the first back shroud 012 is connected with conductive screw socket 016, conductive screw socket 016 and driving circuit Component is electrically connected, for being connect with external power supply.Conductive screw socket 016 is welded to connect with lamp holder 011.The outer wall of conductive screw socket 016 It is threaded, can be used for fixing the corn lamp of the utility model embodiment offer.

In some embodiments, lamp holder 011 is molded by PC plastic, on the one hand can play the role of insulation；Compared to Metal can also reduce the quality of the corn lamp of the utility model embodiment offer, keep overall structure lighter.

In some embodiments, it is provided with ventilation hole on lamp holder 011, for generate the drive circuit component course of work Heat is distributed out of cavity.It is provided with dust-break net on ventilation hole, is entered with to reduce dust and interferes drive circuit in cavity Part works normally.

In some embodiments, the first back shroud 012 is molded by PC plastic.PC plastic heat-proof quality is preferable, can subtract Heat on few column lamp body 02 is transmitted to drive circuit component, and drive circuit component is made to maintain lower operating temperature.

In some embodiments, column lamp body 02 is made of aluminum alloy materials.

In some embodiments, it is provided with heat dissipation channel on column lamp body 02.Column lamp body 02 is hollow structure, columnar lamp The side wall of body 02 is provided with is connected to air flow ports with the hollow cavity of column lamp body 02.Heat transfer in LED lamp panel is to column On lamp body 02, it can be distributed to air through hollow cavity and air flow ports.It is provided with heat-dissipating fin on column lamp body 02；Heat-dissipating fin It is distributed on the inner wall of hollow cavity.The performance for distributing heat to air by enhancing column lamp body 02, can reduce column lamp body 02 The heat of upper accumulation transmits heat to reduce column lamp body 02 to lamp cap 01.

In some embodiments, it is connected by screw between the first back shroud 012 and column lamp body 02.In column lamp body 02 It is provided with connection screw thread hole towards on the end face of the first back shroud 012, is provided on the first back shroud 012 and connection screw thread hole Corresponding connection counter sink；Screw passes through connection counter sink to coordinate with connection screw thread hole, and the first back shroud 012 is fixed on column On lamp body 02.Connection screw thread hole be distributed with along the axially spaced-apart of column lamp body 02 it is multiple, connection counter sink be correspondingly arranged on it is multiple.

In some embodiments, it is fixedly connected by glue between the first back shroud 012 and lamp holder 011.

In some embodiments, it is connected by screw between the first back shroud 012 and lamp holder 011.

In some embodiments, it is connected by glue between the first back shroud 012 and lamp holder 011.

Further, drive circuit component includes driving power component 0131 and is electrically connected with driving power component 0131 Circuit connecting plate 0132；LED lamp panel is connect with circuit connecting plate 0132；Circuit connecting plate 0132 is set to driving power component 0131 and first between back shroud 012.

Specifically, the center of circuit connecting plate 0132 is provided with through-hole, the corresponding position setting of the first back shroud 012 There is threaded hole, circuit connecting plate 0132 is fixed on the first back shroud 012 by the screw coordinated with the threaded hole.Driving electricity Source component 0131 is fixed on the inner wall of lamp holder 011.The luminous lamp beads of multiple LED, all LED electroluminescent lamps are connected in LED lamp panel The line concentration of pearl is connected on circuit connecting plate 0132, can simplify the line of driving power component 0131, new convenient for this practicality The assembly for the corn lamp that type embodiment provides and later period maintenance；In addition, by circuit connecting plate 0132 by driving power component 0131 separates with the first back shroud 012, can further stop in heat transfer to driving power component 0131, maintains driving power The normal working temperature of component 0131.

Further, lamp cap 01 further includes the second back shroud 014；Second back shroud 014 is connected to the first back shroud 012 back of the body Side from column lamp body 02, lamp holder 011 are connected to the side that the second back shroud 014 deviates from the first back shroud 012；Driving power Component 0131 is located between lamp holder 011 and the second back shroud 014, and circuit connecting plate 0132 is located at the second back shroud 014 and first Between back shroud 012.

Specifically, Fig. 1 and Fig. 4 are please referred to, is connected by screw between lamp holder 011 and the second back shroud 014.After second It is provided with threaded hole on cover board 014, the countersunk head through-hole coordinated with the threaded hole is provided on lamp holder 011, screw passes through lamp holder 011 On countersunk head through-hole and the second back shroud 014 on threaded hole cooperation, will be fixed between lamp holder 011 and the second back shroud 014.

In some embodiments, it is connected by glue between lamp holder 011 and the second back shroud 014.

The periphery of second back shroud 014 and the joint face of lamp holder 011 is provided with annular notch, be provided on lamp holder 011 with The annular protrusion of annular notch cooperation；Annular protrusion on lamp holder 011 and annular notch card and, can be lamp holder 011 and second Positioning is provided between back shroud 014, prevents lamp holder 011 with respect to 014 vibration of the second back shroud, in order to install.

Space between lamp holder 011 and the first back shroud 012 is separated into two parts by the second back shroud 014, can be further The heat slowed down on column lamp body 02 is transmitted to driving power component 0131, and driving power component 0131 is maintained to work normally temperature Degree reduces the influence that 02 fever of column lamp body works to lamps and lanterns.

Further, lamp cap 01 further includes connecting cylinder 015；Connecting cylinder 015 is set to the first back shroud 012 and the second rear cover Between plate 014, and both ends are abutted with the first back shroud 012 and the second back shroud 014 respectively.

Specifically, Fig. 1 is please referred to, connecting cylinder 015 can slow down the heat on the first back shroud 012 to the second back shroud 014 Upper transmission advantageously reduces the temperature of the second back shroud 014 and lamp holder 011, also helps and reduces the second back shroud 014 and lamp holder The temperature of cavity is influenced by lamp body fever between 011.

In some embodiments, connecting cylinder 015 is molded by PC plastic.Relative to the first back shroud 012, the second rear cover Plate 014 and lamp holder 011,015 structure of connecting cylinder is relatively simple, and the outer wall of connecting cylinder 015 is cylindrical surface, can be convenient for being arranged on surface Decorative pattern, to keep the corn lamp appearance that the utility model embodiment provides more beautiful.

Further, Fig. 1, Fig. 3 and Fig. 4, end set of first back shroud 012 close to the second back shroud 014 are please referred to There is the first annular notch 0123 coordinated with the inner wall of connecting cylinder 015；Second back shroud 014 is close to the end of the first back shroud 012 Portion is provided with the second annular notch 0141 coordinated with the inner wall of connecting cylinder 015；Connecting cylinder 015 is sheathed on first annular notch 0123 and second on annular notch 0141, both ends respectively with first annular notch 0123 towards the bottom surface of the second back shroud 014 and Second annular notch 0141 is abutted towards the bottom surface of the first back shroud 012.

Specifically, when the assembling of the corn lamp provided in the utility model embodiment, can 015 set of connecting cylinder be first set to the On the first annular notch 0123 of one back shroud 012, then the second back shroud 014 is connected on connecting cylinder 015, the second annular lacks Mouth 0141 coordinates in the inner wall of connecting cylinder 015.In this way, the position that the second back shroud 014 is installed on the first back shroud 012 can be improved Precision is set, is easily installed and dismantles.

In some embodiments, the inside of connecting cylinder 015 is provided with protrusion, raised both sides respectively with the first back shroud 012 end face and the end face of the second back shroud 014 abut.In this way, the contact of connecting cylinder 015 and the first back shroud 012 can be increased The contact area of face and connecting cylinder 015 and the second back shroud 014 improves connectivity robustness.

Further, driving power component 0131 passes through heat-conducting type insulating cement sealing, heat-conducting type insulating cement covering driving electricity Electronic component on source component 0131.

Specifically, heat-conducting type insulating cement makes the electronic component sealing on driving power component 0131, improves drive The shock resistance of dynamic power supply module 0131 can reduce the damage for falling the corn lamp that equal accident provides the utility model embodiment Wound.

In some embodiments, heat-conducting type insulating cement uses two-component heat conduction embedding silica gel, two-component heat conduction embedding silica gel There is good heat conductivility after solidification.Heat-conducting type insulating cement connects multiple electronic components in driving power component 0131 Together, enhance internal heat transfer, be conducive to 0131 internal temperature of driving power component and keep uniform, avoid local appearance Temperature is excessively high and damages component；The operational heat of heat-conducting type insulating cement quickening driving power component 0131 distributes outward simultaneously, Contribute to the temperature of reduction driving power component 0131.

In some embodiments, heat-conducting type insulating cement is mixed by A glue and B glue.Wherein, A glue includes vinyl silicone oil 30%-60%, dimethicone 5%-10%, silicon powder 20%-40%, white carbon 3%-5% and catalyst 0.5%- 1%；B glue include 2 5%-20% of methyl hydrogen siloxane, vinyl silicone oil 30%-60%, dimethicone 5%-10%, Silicon powder 20%-40%, white carbon 3%-5% and polymerization inhibitor 0.1%-0.5%.Heat conduction after A glue and the mixing solidification of B glue Coefficient is more than or equal to 0.7W (mK).

Further, driving power component 0131 and lamp holder 011 are connected as one by heat-conducting type insulating cement.

Specifically, driving power component 0131 is installed to the setting position of lamp holder 011, heat-conducting type insulating cement is poured into a mould, leads Driving power component 0131 and lamp holder 011 are connected as one after the solidification of heat type insulating cement.In this way, driving power component can be made 0131 connects more securely on lamp holder 011, and can simplify the connection structure between lamp holder 011 and driving power component 0131； In addition, the heat also helped on driving power component 0131 is distributed outward by lamp holder 011.

Further, the corn lamp that the utility model embodiment provides includes multiple LED lamp panels, and multiple LED lamp panels are in column The circumferentially-spaced distribution of 02 upper edge column lamp body 02 of shape lamp body；Multiple line three-way holes 0121 excessively are provided on first back shroud 012, it is more It is a cross line three-way hole 0121 012 upper edge column lamp body 02 of the first back shroud circumferentially-spaced distribution, and with multiple LED lamp panels one One corresponds to；The connecting line of multiple LED lamp panels is each passed through corresponding line three-way hole 0121 of crossing and is connect with circuit connecting plate 0132.

Specifically, multiple LED lamp panels are distributed in the peripheral surface of column lamp body 02, and light emits around.Multiple LED lamp panels Connecting line be each passed through the line three-way hole 0121 of crossing on corresponding first back shroud 012 and connect with circuit connecting plate 0132, then lead to Oversampling circuit connecting plate 0132 is connect with driving power component 0131, and which simplify the wiring of driving power component 0131, are convenient for Assembly.

Further, the connecting line of LED lamp panel is soft arranging wire；Soft arranging wire is pierced by from line three-way hole 0121 is crossed, to the first rear cover The center position of plate 012 is bent, and is connect with circuit connecting plate 0132；Line three-way hole 0121 is crossed close to the center of the first back shroud 012 Side be provided with the arc transiting surface 0122 coordinated with the bending part of soft arranging wire.

Specifically, soft arranging wire makes convenient for bending, and can integrate more connecting lines to simplify the wiring of LED lamp panel 01 internal structure of lamp cap is compacter.0122 bootable soft arranging wire of arc transiting surface is bent, and reduces bending to soft arranging wire inner wire The damage on road.

Further, the corn lamp that the utility model embodiment provides further includes dropproof connector 017；Dropproof connection One end of part 017 is connect with column lamp body 02, and the other end is connect with lamp holder 011.

Specifically, referring to Fig.1 and 2, dropproof connector 017 is located inside column lamp body 02 and lamp holder 011, and Joint face across column lamp body 02 and lamp holder 011.The first connecting hole 0111 is provided on the inner wall of lamp holder 011, it is anti-to fall One end that connector 017 is connect with lamp holder 011 is fallen to be fixed in the first connecting hole 0111.The second company is provided on column lamp body 02 Hole is connect, the other end of dropproof connector 017 is fixed in the second connecting hole.When 02 temperature of column lamp body is excessively high, column is caused When connecting loosening between lamp body 02 and lamp cap 01, dropproof connector 017 can avoid the disengaging lamp cap 01 of column lamp body 02 and fall.

Finally it should be noted that：Each embodiment in this specification is described in a progressive manner, each embodiment What is stressed is all the difference with other embodiments, and identical similar part cross-reference is between each embodiment It can；The above various embodiments is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to aforementioned each implementation The utility model is described in detail in example, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned Technical solution recorded in each embodiment is modified, and either carries out equivalent replacement to which part or all technical features； And these modifications or replacements, the model for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims (10)

1. a kind of corn lamp, which is characterized in that including：Lamp cap and column lamp body；It is connected on the peripheral surface of the column lamp body LED lamp panel；The lamp cap includes lamp holder, the first back shroud and drive circuit component；

First back shroud is connected on an end face of the column lamp body, and the lamp holder is connected to first back shroud Away from the side of the column lamp body；The drive circuit component is installed between the lamp holder and first back shroud and is formed Cavity in；

Be provided with line three-way hole on first back shroud, the connecting line of the LED lamp panel pass through it is described cross line three-way hole with it is described Drive circuit component connects.

2. corn lamp according to claim 1, which is characterized in that the drive circuit component include driving power component and The circuit connecting plate being electrically connected with the driving power component；The LED lamp panel is connect with the circuit connecting plate；

The circuit connecting plate is set between the driving power component and first back shroud.

3. corn lamp according to claim 2, which is characterized in that the lamp cap further includes the second back shroud；Described second Back shroud is connected to the side that first back shroud deviates from the column lamp body, and the lamp holder is connected to second back shroud Away from the side of first back shroud；

For the driving power component between the lamp holder and second back shroud, the circuit connecting plate is located at described the Between two back shrouds and first back shroud.

4. corn lamp according to claim 3, which is characterized in that the lamp cap further includes connecting cylinder；The connecting cylinder is set Be placed between first back shroud and second back shroud, and both ends respectively with first back shroud and described second Back shroud abuts.

5. corn lamp according to claim 4, which is characterized in that first back shroud is close to second back shroud End set has the first annular notch coordinated with the inner wall of the connecting cylinder；

Second back shroud has second coordinated with the inner wall of the connecting cylinder close to the end set of first back shroud Annular notch；

The connecting cylinder is sheathed on the first annular notch and the second annular notch, both ends respectively with first ring V notch v is abutted towards the bottom surface of second back shroud and the second annular notch towards the bottom surface of first back shroud.

6. corn lamp according to claim 2, which is characterized in that the driving power component is sealed by heat-conducting type insulating cement Gu the heat-conducting type insulating cement covers the electronic component on the driving power component.

7. corn lamp according to claim 6, which is characterized in that the driving power component and the lamp holder are described in Heat-conducting type insulating cement is connected as one.

8. corn lamp according to claim 2, which is characterized in that the corn lamp includes multiple LED lamp panels, multiple The circumferentially-spaced distribution of LED lamp panel column lamp body described in the column lamp body upper edge；

Multiple line three-way holes excessively are provided on first back shroud, multiple line three-way holes of crossing are on first back shroud It is corresponded along the circumferentially-spaced distribution of the column lamp body, and with multiple LED lamp panels；

The connecting line of multiple LED lamp panels is each passed through the corresponding line three-way hole of crossing and is connect with the circuit connecting plate.

9. corn lamp according to claim 2, which is characterized in that the connecting line of the LED lamp panel is soft arranging wire；It is described soft Winding displacement is pierced by from the line three-way hole of crossing, and is bent to the center position of first back shroud, is connect with the circuit connecting plate；

The line three-way hole of crossing is provided with and the cooperation of the bending part of the soft arranging wire close to the side at the center of first back shroud Arc transiting surface.

10. corn lamp according to claim 1, which is characterized in that the corn lamp further includes dropproof connector；It is described One end of dropproof connector is connect with the column lamp body, and the other end is connect with the lamp holder.