A kind of LED street lamp
Technical field
the utility model belongs to LED matrix technical field, relates to a kind of LED street lamp.
Background technology
lED street lamp is the important component part of city illumination, has efficient, energy-conservation, that the life-span is long advantage.The LED street lamp of prior art, its lamp holder is supported by arm, and arm one end is fixed on the lamp stand of vertically setting, when its lamp holder of LED street lamp of this structure is along bad needing repairing, people will climb along lamp stand and operation aloft, keeps in repair and changes very inconvenient, and there is potential safety hazard.
Summary of the invention
the purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of LED and change LED street lamp easily.
the purpose of this utility model realizes by following technical proposal: a kind of LED street lamp, comprise and vertically arranging and cylindrical lamp stand, it is characterized in that, the center, upper surface of described lamp stand has the connecting portion of protrusion, described connecting portion is socketed with electromagnet cylindrically and this electromagnet is fixed together by glue and lamp stand, the external diameter of described electromagnet and the equal diameters of described lamp stand, described electromagnet is socketed with the arm be fabricated from iron, described arm comprises tubular socket part and horizontally disposed location division, the madial wall of described socket part reclines mutually with electromagnet lateral wall, the telescoping tube being fixed with LED on the downside of described location division and vertically arranging, described telescoping tube is between LED and lamp stand, described telescoping tube comprises setting up and down and all cylindrical tube connector and stay pipe, described tube connector lower end is set on stay pipe and the upper end of this tube connector and is connected mutually with described location division, the locking mechanism that restriction tube connector slides up and down is provided with between described tube connector and stay pipe upper end.
when street lamp normally uses, electromagnet obtains electric thus arm and lamp stand is stably fixed together, and under the effect of locking mechanism, and tube connector and stay pipe are fixed together formation entirety; When LED damage needs to change, first make electromagnet dead electricity, then locking mechanism is removed that tube connector can be slided up and down relative to stay pipe, now arm moves down under gravity automatically, thus the distance reduced between LED and ground, facilitate the replacing of LED; After LED is changed, only need hold tube connector and it up be carried makes the madial wall of socket part recline mutually with electromagnet lateral wall, then electromagnet again electric and arm is fixed firmly, then again tube connector and stay pipe are fixed together by locking mechanism.
in above-mentioned LED street lamp, described connecting portion cylindrically and electromagnet madial wall recline mutually with connecting portion lateral wall, described connecting portion end face is provided with screwed hole, joint pin is bolted with in described screwed hole, described joint pin outer end is stretched out screwed hole and this joint pin outer end sidewall is had with it coaxial annular shoulder block arranged, and described electromagnet both ends of the surface offset with annular shoulder block and lamp stand upper surface respectively.
electromagnet madial wall and connecting portion lateral wall recline mutually and electromagnet both ends of the surface offset with annular shoulder block and lamp stand upper surface respectively, carry out spacing to electromagnet, electromagnet is stably fixed together with lamp stand, increase the fixing that arm connects, effectively strengthen the stability during work of this LED street lamp.
in above-mentioned LED street lamp, the axial length of described socket part is equal with the thickness of electromagnet, the external diameter of described annular shoulder block is greater than the diameter of lamp stand, described fixed part is long plate shape and this fixed part upper side and upper surface, socket part flush, and upper side and the annular shoulder block of described fixed part offset.
play position-limiting action by arranging annular shoulder block to arm moves, thus the contact area between socket part and electromagnet is maximized, further increase the fixing that arm connects, effectively strengthen the stability during work of this LED street lamp.
in above-mentioned LED street lamp, described locking mechanism comprises the screwed hole that tube connector lower end sidewall runs through and the bolt be screwed onto in screwed hole, and the end of described bolt is together with stay pipe tight abutment.
limited the movement of tube connector by rotary screw, there is the advantage that structure is simple, easy to use.
alternatively, in above-mentioned LED street lamp, the bolt that described locking mechanism comprises the screwed hole one that tube connector sidewall runs through, the screwed hole two that stay pipe sidewall runs through and is screwed onto in described screwed hole one, the end of described bolt is screwed onto in described screwed hole two.
in above-mentioned LED street lamp, described lamp stand lower end has supporting seat, and the axial length of described tube connector is greater than the axial length of stay pipe, and lower surface and the described supporting seat of described stay pipe offset.
the lower end of stay pipe and supporting seat offset and to play a supporting role to arm, and arm is more stably connected on lamp stand, effectively strengthen the stability during work of this LED street lamp.
compared with prior art, this LED street lamp has the following advantages:
1, when LED damage needs to change, first make electromagnet dead electricity, then locking mechanism is removed that tube connector can be slided up and down relative to stay pipe, now arm moves down under gravity automatically, thus the distance reduced between LED and ground, facilitate the replacing of LED.
2, electromagnet madial wall and connecting portion lateral wall recline and electromagnet both ends of the surface offset with annular shoulder block and lamp stand upper surface respectively mutually, carry out spacing to electromagnet, electromagnet is stably fixed together with lamp stand, increase the fixing that arm connects, effectively strengthen the stability during work of this LED street lamp.
3, play position-limiting action by arranging annular shoulder block to arm moves, thus the contact area between socket part and electromagnet is maximized, further increase the fixing that arm connects, effectively strengthen the stability during work of this LED street lamp.
4, the lower end of stay pipe and supporting seat offset and to play a supporting role to arm, arm is more stably connected on lamp stand, effectively strengthens the stability during work of this LED street lamp.
Accompanying drawing explanation
fig. 1 is the structural representation of this LED street lamp.
fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1.
fig. 3 is the structure for amplifying schematic diagram at B place in Fig. 1.
in figure, 1, lamp stand; 1a, supporting seat; 1b, connecting portion; 2, electromagnet; 3, arm; 3a, socket part; 3b, fixed part; 4, telescoping tube; 4a, tube connector; 4b, stay pipe; 5, joint pin; 5a, annular shoulder block; 6, LED; 7, bolt.
Detailed description of the invention
be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
embodiment one
as shown in Figure 1, this LED street lamp is made up of lamp stand 1, electromagnet 2, arm 3, telescoping tube 4 etc.
wherein, lamp stand 1 is cylindric and vertically arranges, and lamp stand 1 lower end has supporting seat 1a, fixing for lamp stand 1.The upper surface of lamp stand 1 has protrusion and cylindrical connecting portion 1b, cylindrically and be socketed on connecting portion 1b, now, the madial wall of electromagnet 2 and the lateral wall of connecting portion 1b stick together electromagnet 2.Further illustrate, as shown in Figure 3, the external diameter of electromagnet 2 and the equal diameters of lamp stand 1, connecting portion 1b end face is provided with screwed hole, joint pin 5 is bolted with in screwed hole, joint pin 5 outer end is stretched out screwed hole and this joint pin 5 outer end sidewall is had with it coaxial annular shoulder block 5a arranged, and electromagnet 2 both ends of the surface offset with annular shoulder block 5a and lamp stand 1 upper surface respectively, play spacing effect to electromagnet 2.In the present embodiment, electromagnet 2 is fixed together firmly by glue and lamp stand 1.
arm 3 comprises socket part 3a cylindrically and horizontally disposed fixed part 3b and arm 3 is fabricated from iron.Wherein, the lateral wall of the socket part 3a madial wall and electromagnet 2 that are socketed on electromagnet 2 and this socket part 3a sticks together.The telescoping tube 4 being fixed with LED 6 on the downside of location division and vertically arranging, and telescoping tube 4 is between LED 6 and lamp stand 1.
further illustrate, the axial length of socket part 3a is equal with the thickness of electromagnet 2, the external diameter of annular shoulder block 5a is greater than the diameter of lamp stand 1, fixed part 3b is long plate shape and this fixed part 3b upper side and 3a upper surface, socket part flush, upper side and the annular shoulder block 5a of fixed part 3b offset, thus play position-limiting action to arm 3 moves, contact area between socket part 3a and electromagnet 2 is maximized, further increase the fixing that arm 3 connects, effectively strengthen the stability during work of this LED street lamp.
as shown in Figure 2, telescoping tube 4 comprises setting up and down and all cylindrical tube connector 4a and stay pipe 4b, tube connector 4a lower end is set on stay pipe 4b and this tube connector 4a can slide up and down, the upper end of tube connector 4a is connected mutually with downside, location division, is provided with the locking mechanism that restriction tube connector 4a slides up and down between tube connector 4a and stay pipe 4b upper end.In the present embodiment, locking mechanism comprises screwed hole that tube connector 4a sidewall runs through and is screwed onto the bolt 7 in screwed hole, and the end of bolt 7 is together with stay pipe 4b tight abutment thus tube connector 4a and stay pipe 4b is fixed together.Limited the movement of tube connector 4a by rotary screw, there is the advantage that structure is simple, easy to use.Further optimization, the axial length of tube connector 4a is greater than the axial length of stay pipe 4b, and lower surface and the supporting seat 1a of stay pipe 4b offset.
when street lamp normally uses, electromagnet 2 electric thus arm 3 and lamp stand 1 are stably fixed together, and under the effect of bolt 7, tube connector 4a and stay pipe 4b is fixed together formation entirety; When LED 6 damage needs to change, first make electromagnet 2 dead electricity, then screwed out by bolt 7 and tube connector 4a can be slided up and down relative to stay pipe 4b, now arm 3 moves down under gravity automatically, thus the distance reduced between LED 6 and ground, facilitate the replacing of LED 6; After LED 6 is changed, only need hold tube connector 4a and it up be carried makes the madial wall of socket part 3a recline mutually with electromagnet 2 lateral wall, then electromagnet 2 again electric and arm 3 is fixed firmly, then by again screwing in, tube connector 4a and stay pipe 4b is fixed together.
embodiment two
the present embodiment two with the structure of embodiment one and principle substantially identical, different place is: the bolt 7 that locking mechanism comprises the screwed hole one that tube connector 4a sidewall runs through, the screwed hole two that stay pipe 4b sidewall runs through and is screwed onto in screwed hole one, and the end of bolt 7 is screwed onto in screwed hole two.
specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.