TWM591146U - End cover of lamp tool - Google Patents

Abstract

An end cap for a lamp, the lamp includes a lamp tube, the lamp tube has a tube end at one end, the end cap is suitable for sealing the end of the tube, and includes a cap end wall, a peripheral wall, and an inner The surrounding wall, and at least one water blocking ring. The inner surrounding wall cooperates with the peripheral wall and the cover end wall to define an annular groove opening towards the end of the tube and suitable for insertion of the end of the tube. The inner surrounding wall includes an inner wall surface spaced from inside to outside An outer wall surface. The at least one water blocking ring radially protrudes from the outer wall surface of the inner peripheral wall, and is adapted to closely contact an inner peripheral surface of the tube end. By the arrangement of the at least one water blocking ring, the end cover and the end of the tube can be kept good, so as to have an excellent waterproof effect.

Description

End cover of lamps

The invention relates to a lamp, in particular to an end cap of a lamp sealed at one end of a lamp tube.

Light emitting diodes (LEDs) have been widely used in various lamp fields in recent years. As far as an existing lamp in the form of an LED lamp is concerned, it basically consists of a lamp tube and two lamps respectively sealed in the lamp tube. The end cover at the opposite end, and a light-emitting unit that is contained in the lamp tube and can be activated to emit light. The light-emitting unit will pass through one of the end covers through two wires or two pins, and then An external power supply is electrically connected.

In order to prevent foreign objects such as moisture or dust from entering the lamp tube through the gap between the end caps and the lamp tube, the lamp manufacturer usually uses adhesive to combine the end caps and the lamp tube. However, due to the Adhesives tend to aging or crack due to heat, which leads to poor sealing of the adhesives, which cannot be waterproof and moisture-proof. External moisture and air easily enter the lamp tube, which will cause the circuit of the light-emitting unit Short circuit or oxidation damage, high wear rate, so the existing LED lamps have the lack of poor waterproof effect and short service life.

Therefore, the purpose of the present invention is to provide an end cap for a lamp that can overcome at least one disadvantage of the prior art.

Therefore, the end cap of the new type lamp includes a lamp tube around a central axis, the lamp tube has a tube end portion at one end, and the tube end portion has an inner peripheral surface and an outer peripheral surface spaced inside and outside , And a tube end face connecting the inner peripheral surface and the outer peripheral end edge, the end cap is suitable for sealing the end of the tube, and includes a cap end wall, a peripheral wall, an inner wall, and at least one Water blocking ring. The end wall of the cover is suitable for placing the cover on the end surface of the tube. The peripheral wall extends around the central axis and from the peripheral edge of the end wall of the cover toward the outer side of the tube end, and is suitable for abutting on the outer circumferential surface of the tube end. The inner peripheral wall extends from the end wall of the cover toward the inner side of the end of the tube and is spaced within the inner periphery of the peripheral wall, and cooperates with the peripheral wall and the end wall of the cover to define an opening toward the end of the tube And it is suitable for the annular groove for inserting the end of the tube, and the inner surrounding wall includes an inner wall surface and an outer wall surface spaced inside and outside. The at least one water blocking ring radially protrudes from the outer wall surface of the inner peripheral wall, and is adapted to closely contact the inner peripheral surface of the pipe end.

The effect of the present invention lies in: through the setting of the water blocking ring, it can ensure that the elasticity is tight against the end of the tube without aging or cracking, so it can achieve good sealing.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same number.

Referring to FIGS. 1, 2 and 3, a first embodiment of the end cap of the new lamp 1 includes a lamp tube 11 which is light-transmitting around a central axis 10 and a lamp which is mounted on the lamp A light-emitting unit 12 in the tube 11 that can be activated to emit light. The lamp tube 11 is a hollow long tube body, and has a tube end portion 112 at one end and defining a nozzle 111, the tube end portion 112 has an inner peripheral surface 113 and an outer peripheral surface spaced inside and outside and annularly surrounded 114, and a tube end surface 115 that radially connects the end edges of the inner peripheral surface 113 and the outer peripheral surface 114. The light-emitting unit 12 has a circuit board 121 set in the lamp tube 11, a plurality of light-emitting elements 122 disposed on the circuit board 121, a control circuit group 123 electrically connected to the circuit board 121, and a neighbor The tube end 112 is electrically connected to the pin fixing plate 124 of the control circuit group 123, and two pins 125 protruding from the pin fixing plate 124 to the end plug at intervals, the pins 125 can be used for external power supply. The end cap is suitable for sealing the tube end 112 of the lamp tube 11, and the other end of the lamp tube 11 can be sealed with the same structure of the end cap, or with another end plug of different structure Plug, no more explanation here.

The end cover includes a cover end wall 2, a peripheral wall 3, an inner peripheral wall 4, and three water blocking rings 5. The cover end wall 2, the outer peripheral wall 3, the inner peripheral wall 4 and the water blocking rings 5 of the end cover are connected to each other and made in one piece, such as silicone rubber, rubber, etc. Made of natural resin material.

The cover end wall 2 is circular and is suitable for placing the cover on the tube end surface 115 of the tube end 112 to close the nozzle 111. The cover end wall 2 includes a face facing the nozzle 111 and is suitable for the stitch The inner end surface 21 where the fixing plate 124 abuts, and an outer end surface 22 spaced apart from the inner end surface 21. The outer end surface 22 has two protruding tube surfaces 221 spaced apart and protruding away from the inner end surface 21. The end wall 2 of the cover defines two perforations 23 penetrating through the outer end face 22 and the inner end face 21 respectively. The number of the perforations 23 is the same as that of the protruding face part 221 and is suitable for The pins 125 extend through each other, and the design that the distance between the protruding tube surface 221 and the inner end surface 21 is increased can thicken the portion surrounding the perforation 23 and increase The contact area of the pins 125 can not only securely hold the pins 125 but also strengthen to prevent the infiltration of moisture and moisture.

The peripheral wall 3 surrounds the central axis 10 and has a circular ring shape. It extends from the peripheral edge of the cover end wall 2 toward the outer side of the tube end 112 and is suitable for surrounding and abutting on the outer circumferential surface of the tube end 112 At 114, it became the first line of defense to prevent the entry of moisture and moisture.

The inner wall 4 surrounds the central axis 10 and has a circular ring shape, which extends from the end wall 2 of the cap toward the inside of the tube end 112 and is concentrically spaced within the inner wall of the outer wall 3, which is suitable for bonding Leaning on the inner peripheral surface 113 of the tube end 112 becomes a second line of defense against the entry of moisture. The inner peripheral wall 4 includes an inner wall surface 41 and an outer wall surface 42 spaced inside and outside and annularly surrounded. An inner wall surface 41 of the inner surrounding wall 4 cooperates with the cover end wall 2 to define a receiving groove 43, and an outer wall surface 42 of the inner surrounding wall 4 cooperates with the peripheral wall 3 and the cover end wall 2 to define a The opening faces the tube end 112 and is suitable for the ring groove 44 into which the tube end 112 is inserted.

Furthermore, the length of the inner peripheral wall 4 along the central axis 10 is longer than the length of the peripheral wall 3, the outer wall surface 42 of the inner peripheral wall 4 has a length concentric with the peripheral wall 3 and the peripheral wall 3 corresponds to a flush inner peripheral surface 421, a mounting surface 422 extending from the inner peripheral surface 421 away from the end wall 2 of the lid and extending out of the peripheral wall 3 to be offset from the peripheral wall 3, and a The mounting surface 422 extends toward the extension surface 423 away from the inner peripheral surface 421. In other embodiments, the extension face 423 may be omitted.

The water blocking rings 5 have a hollow ring shape and are arranged at intervals along the central axis 10, which are the mounting surface portions 422 of the outer wall surface 42 of the inner wall 4 that radially protrude, and can be flexibly deformed to be suitable for close contact The inner peripheral surface 113 of the tube end portion 112 can further ensure the adhesion with the inner peripheral surface 113, and can serve as a third line of defense against the ingress of moisture and moisture. Each of the water blocking rings 5 of the first embodiment is generally triangular in shape, and has an oblique ring surface 51 that gradually extends from the outer wall surface 42 away from the central axis 10 toward the end wall 2 of the cover, And a straight ring surface 52 extending inward from the outer periphery of the inclined ring surface 51 in the direction perpendicular to the central axis 10 to the outer wall surface 42 so as to smoothly plug into the tube end portion 112 without being easily reversed Out. It should be noted that the number of water blocking rings 5 is not limited to three, and it can be one, two, four, etc. according to actual needs.

It should be noted that, when the tube end 112 is inserted into the ring groove 44, it will be covered with the whole of the flexible peripheral wall 3, the cover end wall 2 and the inner surrounding wall 4 at the same time, and then The water blocking rings 5 are further pressed against the tube end 112, so that the end cap will form three water blocking lines, which can be tightly plugged on the tube end 112 to make the outside water vapor , Moisture, air, dust and other foreign objects cannot enter the lamp tube 11 from the joint surface between the end cap and the tube end 112, which is flexed and turned from outside to inside and has a long contact area, so it can produce The better adhesion effect and waterproofness can effectively prevent the light-emitting unit 12 from being unable to work normally due to moisture.

It is further explained that, in order to achieve a better waterproof function, the end cap further includes a shrink film 6 which extends from the periphery of the end wall 2 of the cap along the peripheral wall 3 and the outer peripheral surface of the tube end 112 114 is tightly wrapped to prevent moisture from entering the gap between the peripheral wall 3 and the tube end 112 to enhance waterproofness.

Other than that. After the first embodiment is assembled, a needle 7 (shown by the imaginary line in FIG. 2) can also be used to pass through the end wall 2 of the cover and the pin fixing plate 124, and to extract the air and moisture in the lamp tube 11. Nitrogen is refilled, and at the moment the needle 7 is pulled out, the end wall 2 of the cover made of soft material can quickly close the pinhole, so that the lamp tube 11 maintains a vacuum-like state, which can slow down the internal components The rate of oxidation to extend the life of the lamp 1.

Referring to FIG. 4, the structure of the second embodiment of the end cover of the new lamp 1 is substantially the same as that of the first embodiment, the difference is that the shape of the water blocking rings 5 changes, and each of the second embodiment The cross section of the water blocking ring 5 is generally semicircular, which can also achieve the purpose of good sealing.

Referring to FIG. 5, the structure of a third embodiment of the end cover of the new lamp 1 is substantially the same as that of the first embodiment, the difference is that the end cover only includes a hollow annular water blocking ring 5, and the The cross section of the water blocking ring 5 is generally rounded flat trapezoid, which can also achieve the purpose of good sealing.

Referring to FIG. 6, the structure of the fourth embodiment of the end cover of the new lamp 1 is substantially the same as that of the first embodiment, and also the same as that of the second and third embodiments. The difference is that: the end wall 2 of the cover The outer end surface 22 has only one protruding tube surface 221, and the cover end wall 2 only defines one perforation 23 penetrating through the protruding tube surface 221, and the shape of the lamp 1 to which the end cover is applied is different, The light-emitting unit 12 of the lamp 1 omits the setting of the pin fixing plate 124 (see FIG. 2) and the pins 125 (see FIG. 2), and is directly passed through two wires 126 electrically connected to the control circuit group 123 After passing through the perforation 23 of the end cover, and then electrically connected to the external power supply, of course, the end cover of the new lamp 1 can also achieve the purpose of good sealing.

In summary, the end cap of the new lamp 1 is sandwiched by the outer wall 3 and the inner peripheral wall 4 of the tube end 112, and at the same time, the water blocking ring 5 is further closely attached to the tube The end portion 112 can enhance the conformity with the tube end portion 112, and can keep the end cover and the tube end portion 112 to maintain a good seal, so as to have an excellent waterproof effect, and can relatively reduce the cost and extend the service life. Therefore, it can indeed achieve the purpose of new cost. It is worth mentioning that the arrangement of the water blocking rings 5 can not only relatively reduce the tolerance of the outer peripheral wall 3 and the inner surrounding wall 4, but also can reduce the requirement for the roundness of the lamp tube 11. Increase production and reduce costs.

However, the above are only examples of the new model. When the scope of the new model cannot be limited by this, any simple equivalent changes and modifications made according to the patent application scope and patent specification content of the new model are still regarded as Within the scope of this new patent.

1‧‧‧Lamp 10‧‧‧Central axis 11‧‧‧Lamp 111‧‧‧ nozzle 112‧‧‧tube end 113‧‧‧Inner peripheral surface 114‧‧‧Perimeter 115‧‧‧pipe end 12‧‧‧Lighting unit 121‧‧‧ circuit board 122‧‧‧Lighting element 123‧‧‧Control circuit group 124‧‧‧pin fixing plate 125‧‧‧pin 126‧‧‧Wire 2‧‧‧ Cover end wall 21‧‧‧Inner end 22‧‧‧Outer face 221‧‧‧Face tube 23‧‧‧Perforation 3‧‧‧Outer wall 4‧‧‧Inner wall 41‧‧‧Inner wall 42‧‧‧Outer wall 421‧‧‧ inner face 422‧‧‧Install face 423‧‧‧Extended face 43‧‧‧Capacity 44‧‧‧ring groove 5‧‧‧Water blocking ring 51‧‧‧oblique torus 52‧‧‧Straight torus 6‧‧‧Shrink film 7‧‧‧ Needle

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Fig. 1 is an incomplete exploded perspective view illustrating that a first embodiment of the end cap of the new type of lamp is suitable for sealing on a lamp tube of the lamp; 2 is an incomplete cross-sectional side view illustrating that the first embodiment is installed on the lamp tube of the lamp; 3 is an incomplete cross-sectional exploded view illustrating the first embodiment and the lamp tube; 4 is an incomplete cross-sectional exploded view illustrating a second embodiment of the end cap of the new lamp and the lamp tube; Fig. 5 is an incomplete cross-sectional exploded view illustrating a third embodiment of the end cap of the novel lamp and the lamp tube; and Fig. 6 is an incomplete cross-sectional side view, illustrating that a fourth embodiment of the end cap of the novel lamp is suitable for installation on another lamp.

1‧‧‧Lamp

10‧‧‧Central axis

11‧‧‧Lamp

111‧‧‧ nozzle

112‧‧‧tube end

113‧‧‧Inner peripheral surface

114‧‧‧Perimeter

115‧‧‧pipe end

2‧‧‧ Cover end wall

21‧‧‧Inner end

22‧‧‧Outer face

221‧‧‧Face tube

23‧‧‧Perforation

3‧‧‧Outer wall

4‧‧‧Inner wall

41‧‧‧Inner wall

42‧‧‧Outer wall

421‧‧‧ inner face

422‧‧‧Install face

43‧‧‧Capacity

44‧‧‧ring groove

5‧‧‧Water blocking ring

51‧‧‧oblique torus

52‧‧‧Straight torus

Claims (10)

An end cap for a lamp, the lamp includes a lamp tube around a central axis, the lamp tube has a tube end portion at one end, the tube end portion has an inner peripheral surface and an outer peripheral surface spaced inside and outside, and a The end face of the tube connecting the inner peripheral surface and the end edge of the outer peripheral surface. The end cap is suitable for sealing the end of the tube and includes: A cover end wall, suitable for the cover placed on the tube end face of the tube end; A peripheral wall extending around the central axis and from the peripheral edge of the end wall of the cover toward the outer side of the tube end, suitable for abutting on the outer circumferential surface of the tube end; An inner wall extending from the end wall of the cover toward the inner side of the end of the tube and spaced within the inner wall of the outer wall, and cooperates with the outer wall and the end wall of the cover to define an opening toward the end of the tube And suitable for an annular groove into which the end of the pipe is inserted, the inner surrounding wall includes an inner wall surface and an outer wall surface spaced inside and outside; and At least one water blocking ring radially protrudes the outer wall surface of the inner peripheral wall, and is adapted to closely contact the inner circumferential surface of the end of the tube. The end cover of the lamp according to claim 1, wherein the cover end wall, the peripheral wall, the inner peripheral wall and the at least one water blocking ring of the end cover are connected to each other and are made of a flexible resin material in one piece. The end cover of the light fixture as claimed in claim 2, wherein the end cover includes a plurality of water blocking rings which are hollow and arranged at intervals along the central axis. The end cover of the light fixture as claimed in claim 2, wherein the end cover includes only one water blocking ring in a hollow ring shape. The end cover of the lamp according to any one of claims 1 to 4, wherein the length of the inner wall along the central axis is longer than the length of the peripheral wall, and the outer wall surface of the inner wall has a The peripheral wall is concentrically surrounded and has a length corresponding to the peripheral wall, and an inner wall portion that is flush with the peripheral wall, and an installation that extends from the inner wall surface away from the end wall of the cover and extends out of the peripheral wall and is displaced from the peripheral wall For the face, the mounting face is provided for the water blocking ring. The end cover of the light fixture according to claim 5, wherein the cross section of the water blocking ring is generally triangular, and has an oblique ring gradually extending from the outer wall surface away from the central axis toward the end wall of the cover Surface, and a straight annular surface extending inward from the outer periphery of the oblique annular surface to the outer wall surface in a direction perpendicular to the central axis. The end cover of the light fixture according to claim 5, wherein the cross section of the water blocking ring is generally semicircular. The end cover of the lamp according to claim 5, wherein the cross section of the water blocking ring is generally rounded flat trapezoid. The end cover of the lamp according to claim 1, wherein the end wall of the cover cooperates with the inner surrounding wall to define a receiving slot, the end wall of the cover includes an inner end surface facing the receiving slot, and a An outer end surface with spaced end surfaces, the outer end surface having at least one protrusion surface protruding away from the inner end surface, the end wall of the cover defines at least one same number as the protrusion surface and extending through the protrusion surface Perforation of the inner end surface. The end cap of the lamp as claimed in claim 1, wherein the end cap further comprises a shrink film which is tightly wrapped by the peripheral edge of the end wall of the cap along the peripheral wall and the outer peripheral surface of the tube end .

Images