Lamp holder of lamp tube

Abstract

The utility model discloses a lamp cap of a lamp tube. The lamp cap comprises an end cap and an end plate. Wherein the end cap is formed by stamping a metal sheet and comprises a cylinder wall and an end wall, the end wall is provided with an opening, and the edge of the opening is provided with a clamping groove formed by bending the metal sheet; the end plate is made of an insulating material, is matched with the opening and is used for sealing the opening, a conductive piece is arranged on the insulating end plate, and the side edge of the insulating end plate is clamped with the clamping groove. According to the lamp tube lamp holder, the end caps are made of metal and are fixed in the mode that the insulated end plates are clamped with the clamping grooves in the end caps, compared with a plastic lamp holder used in the prior art, the wall thickness of the metal end caps is small, the overall diameter can be made to be close to the diameter of a fluorescent lamp tube, and the adaptation degree is improved; and the fluorescent lamp tube can be universally used with the fluorescent lamp tube.

Description

Technical Field

[0001] This application relates to the field of lighting equipment technology, and in particular to a lamp holder. Background Technology

[0002] A fluorescent lamp is a common household lighting tool, comprising a transparent tube and lamp heads at both ends of the tube. The lamp heads may be cylindrical shells, and conductive elements are provided on the end faces of the lamp heads.

[0003] Generally, the diameter of a standard fluorescent tube is about 26mm. Most lamp holders on the market are made of plastic. Due to the material, the thinnest wall thickness of a plastic lamp holder is 0.8mm, so the overall diameter of the lamp holder can reach 28mm or more. This is quite different from the diameter of a fluorescent tube, so the two are not very compatible. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a lamp tube body with better adaptability.

[0005] Lamp tubes and lamp holders, including:

[0006] An end cap, formed by stamping a metal sheet, includes a cylindrical wall and an end wall, the end wall having an opening, the edge of which has a groove formed by bending a metal sheet;

[0007] An end plate, made of insulating material, is adapted to the opening and used to close the opening. A conductive element is provided on the insulating end plate, and its side engages with the slot.

[0008] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0009] Optionally, the slot is formed by a first wall extending horizontally outward, a second wall extending horizontally inward, and a third wall extending vertically between the first wall and the second wall, wherein the second wall is used to support the end plate.

[0010] Optionally, the opening has two parallel first side edges, and the two first side edges are provided with the slots.

[0011] Optionally, an arcuate second side edge is provided between the two first side edges, the second side edge having a fourth wall formed by bending a metal sheet to support the end plate.

[0012] Optionally, the fourth wall and the second wall are at the same horizontal height and extend continuously.

[0013] Optionally, the end plate is provided with an opening slot for the switch element to extend out.

[0014] Optionally, the outer end of the opening groove is flared.

[0015] Optionally, the end plate is provided with an annular step arranged around the conductive element.

[0016] Optionally, the height of the annular step is flush with the outer surface of the cylinder wall.

[0017] Optionally, the lower surface of the end plate is provided with a positioning groove for the circuit board to be inserted and mated.

[0018] In the lamp holder of this application, the end cap is made of metal and is fixed by engaging with the slot in the end cap through an insulating end plate. Compared with the plastic lamp holder used in the prior art, the metal end cap has a thinner wall thickness, which allows the overall diameter to be made close to that of the fluorescent tube, improving adaptability and making it compatible with this type of fluorescent tube. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a lamp holder according to an embodiment provided in this application;

[0020] Figure 2 for Figure 1 Exploded view of the lamp holder for the central lamp tube;

[0021] Figure 3 for Figure 1 A cross-sectional view of the lamp holder of the central lamp tube;

[0022] Figure 4 This is a schematic diagram of the structure of the lamp holder in another embodiment provided in this application;

[0023] Figure 5 for Figure 4 A cross-sectional view of the lamp holder of the central lamp tube;

[0024] Figure 6 This is a schematic diagram of the structure of the driving power supply and the lamp holder in one embodiment;

[0025] Figure 7 for Figure 6 A cross-sectional view of the driver power supply in conjunction with the lamp tube and lamp holder;

[0026] Figure 8 for Figure 2 Schematic diagram of the structure of the lower surface of the middle wall;

[0027] Figure 9 for Figure 4 A schematic diagram of the structure of the lower surface of the middle wall.

[0028] The annotations in the figure are explained as follows:

[0029] 100. Lamp tubes and lamp holders;

[0030] 110. End cap; 120. Cylinder wall; 130. End wall; 131. Opening; 1311. First side edge; 1312. Second side edge; 132. Slot; 133. First wall; 134. Second wall; 135. Third wall; 136. Fourth wall; 137. Folded edge; 138. Knurling;

[0031] 140. End plate; 141. Opening slot; 142. Annular step; 143. Conductive component; 144. Positioning slot; 145. Guide slope;

[0032] 200. Drive element; 210. Circuit board; 220. Switch element; 221. Body; 222. Dial head. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a system, product, or device that includes a series of units is not necessarily limited to those units that are explicitly listed, but may include other units that are not explicitly listed or that are inherent to such products or devices.

[0038] Fluorescent lamps generally include a lamp tube, a lamp holder with conductive components, a light-emitting element disposed inside the lamp tube, and a driving element 200 that electrically connects the light-emitting element and the conductive components. The driving element 200 includes a circuit board 210 and electronic components disposed on the circuit board 210. Existing lamp holders are generally made of plastic. Due to the characteristics of the material, the diameter of the plastic lamp holder is relatively large, which makes it poorly compatible with lamp tubes with a conventional diameter of approximately 26mm.

[0039] To solve this problem, such as Figures 1-3 As shown, one embodiment of this application provides a lamp holder 100, including an end cap 110 and an end plate 140.

[0040] The end cap 110 is formed by stamping a metal sheet, such as aluminum or iron. Since aluminum has good ductility and low density, it is preferred to use aluminum as the metal sheet in this embodiment. The end cap 110 includes a cylindrical wall 120 and an end wall 130. The end wall 130 has an opening 131, and the edge of the opening 131 has a groove 132 formed by bending the metal sheet. The thickness of the cylindrical wall 120 of the aluminum end cap 110 is about 0.3 mm. It can be a straight cylinder or a segmented structure, and the diameter of each segment is different. In the figure, it is specifically a segmented structure.

[0041] The end plate 140 is made of insulating material and has a certain hardness and processing strength. It is adapted to the opening 131 and is used to close the opening 131. The insulating end plate 140 is provided with a conductive element 143, and its side engages with the slot 132.

[0042] In the lamp holder 100 of this application, the end cap 110 is made of aluminum and is fixed by engaging the insulating end plate 140 with the slot 132 in the end cap 110. The overall diameter of the lamp holder 100 is only 26.2mm, which is closer to the diameter of the lamp tube than the plastic lamp holders with a diameter of up to 28mm in the prior art. It can be used with this type of lamp tube and improves compatibility.

[0043] See Figure 3 The slot 132 is formed by a first wall 133 extending horizontally outward, a second wall 134 extending horizontally inward, and a third wall 135 extending vertically between the first wall 133 and the second wall 134. In this application, "inward" refers to the direction along the axis of the lamp holder 100, and "outward" refers to the direction away from the axis of the lamp holder 100. The second wall 134 is used to support the end plate 140.

[0044] In this embodiment, the end plate 140 is shaped like a "racetrack." Correspondingly, the opening 131 has two parallel first side edges 1311, each with a slot 132. Between the two first side edges 1311 is an arc-shaped second side edge 1312, which has a fourth wall 136 formed by bending a metal sheet to support the end plate 140. The fourth wall 136 and the second wall 134 are at the same horizontal level and extend continuously, thus strengthening the structure and providing more stable support for the end plate 140. Overall, the end plate 140 is recessed relative to the end cap 110.

[0045] In another embodiment, see Figure 4 and Figure 5 The end plate 140 is circular in shape. In order to fit the end plate 140, the end of the end cap 110 is folded inward to form a folded edge 137. A knurled edge 138 is provided on the circumferential side. The end plate 140 is restricted and fixed inside the end cap 110 by the folded edge 137 and the knurled edge 138. That is, one side of the end plate 140 is attached to the folded edge 137, and the other side is held in place by the knurled edge 138.

[0046] See Figures 1-5 To increase the creepage distance between the end cap 110 and the conductive element 143 (creepage distance refers to the straight-line distance between the end cap 110 and the conductive element 143 on the surface of the insulating sheet), an annular step 142 is provided on the end plate 140, surrounding the conductive element 143. In this embodiment, there are two conductive elements 143, and correspondingly two annular steps 142 are provided, each surrounding a corresponding conductive element 143. Of course, to avoid affecting subsequent assembly, preferably, the height of the annular step 142 does not exceed the outer surface of the cylinder wall 120, i.e., it is flush with the outer surface of the cylinder wall 120. In this embodiment, the height is 0.6 mm.

[0047] To allow for adjustment of light intensity, a switching element 220 for adjusting light intensity is typically mounted on the circuit board 210 of the driving element 200. The switching element 220 includes a body 221 and a toggle 222. For smooth operation, see, for example, the [reference to this application]... Figures 6-7 The end plate 140 is provided with an opening slot 141 for the switch element 220 (toggle 222) to extend out. The outer end of the opening slot 141 is flared to allow a hand to reach in and touch the switch element 220. Of course, to make it as easy to operate as possible, preferably, the toggle extends out of the opening slot 141 and extends to be flush with the annular step 142, which increases the length exposed on the end plate 140, making it easier and faster to operate.

[0048] Of course, in order to fix the circuit board 210 and limit the movement of the switching element 220, see [reference needed]. Figures 8-9 The lower surface of the end plate 140 may also be provided with a positioning groove 144 for the circuit board 210 to be inserted and mated. In order to facilitate the insertion of the circuit board 210, a guide slope 145 may also be provided on the groove wall of the positioning groove 144.

[0049] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0050] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A lamp holder, characterized in that, include: An end cap, formed by stamping a metal sheet, includes a cylindrical wall and an end wall, the end wall having an opening, the edge of which has a groove formed by bending a metal sheet; An end plate, made of insulating material, is adapted to the opening and used to close the opening. A conductive element is provided on the insulating end plate, and its side engages with the slot. The slot is formed by a first wall extending horizontally outward, a second wall extending horizontally inward, and a third wall extending vertically between the first wall and the second wall, wherein the second wall is used to support the end plate. The opening has two parallel first side edges, and the two first side edges are provided with the slots.

2. The lamp holder according to claim 1, characterized in that, Between the two first side edges is an arc-shaped second side edge, the second side edge having a fourth wall formed by bending metal sheet to support the end plate.

3. The lamp holder according to claim 2, characterized in that, The fourth wall and the second wall are at the same horizontal level and extend continuously.

4. The lamp holder according to claim 1, characterized in that, The end plate is provided with an opening slot for the switch element to extend out.

5. The lamp holder according to claim 4, characterized in that, The outer end of the opening groove is flared.

6. The lamp holder according to claim 1, characterized in that, The end plate is provided with an annular step arranged around the conductive element.

7. The lamp holder according to claim 6, characterized in that, The height of the annular step is flush with the outer surface of the cylinder wall.

8. The lamp holder according to claim 1, characterized in that, The lower surface of the end plate is provided with a positioning groove for the circuit board to be inserted and mated.

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