LED lamp

Abstract

The LED lamp comprises a lamp tube, a lamp holder and a lamp tail, the lamp holder and the lamp tail are connected to the two ends of the lamp tube respectively, and a lamp strip is arranged in the lamp tube; the lamp holder is provided with a conductive part used for being connected with an external power source, an LED driving power source is arranged in the lamp holder, and the LED driving power source comprises a driving circuit board and components arranged on the driving circuit board. The light bar is electrically connected with the driving circuit board through the flexible substrate, the flexible substrate comprises a first substrate layer, a first circuit layer and a first solder mask layer, two ends of the flexible substrate are respectively provided with a first bonding pad and a second bonding pad which expose the first circuit layer, the first bonding pad is used for being welded with the light bar, and the second bonding pad is used for being welded with an LED driving power supply. The first bonding pad of the flexible substrate can be welded with the lamp strip in advance before installation, the lamp strip is fed into the lamp tube to be assembled after welding is completed, and the flexible substrate is naturally extended and exposed to the end of the lamp tube. At the moment, when the second bonding pad of the flexible substrate and the LED driving power supply are welded, a sufficient operation space is provided, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of lighting fixtures, and in particular to an LED lamp. Background Art

[0002] The cylindrical LED lamp includes a lamp tube, a lamp head and a lamp tail connected to both ends of the lamp tube respectively. The lamp tube is equipped with a light strip, and the lamp head is equipped with an LED driver power supply. The light strip needs to be connected to the LED driver power supply in order to be powered on.

[0003] However, after the light strip is installed on the lamp tube, the space available for the lamp head to plug into the lamp tube is relatively limited. Specifically, due to considerations such as ease of installation, light strips are usually made of light strip boards. For reasons of space occupation and aesthetics, the end of the light strip is often located at the junction of the lamp tube and the lamp head, rather than passing through the lamp head. This makes it difficult to establish a circuit connection between the light strip and the LED driver power supply.

[0004] Since the lamp holder is usually made of plastic, during the production process, the end of the light strip is placed in a through hole opened in the lamp holder. Due to size limitations, the through hole is too narrow, and the soldering iron can easily burn the lamp holder during soldering, making the welding operation inconvenient and affecting production efficiency. Utility Model Content

[0005] Based on this, it is necessary to provide an LED lamp to address the above technical problems.

[0006] The LED lamp of the present application comprises a lamp tube, and a lamp head and a lamp tail respectively connected to both ends of the lamp tube, wherein a light strip is provided in the lamp tube;

[0007] The lamp holder is provided with a conductive member for connecting to an external power supply, and an LED driving power supply is provided inside the lamp holder, and the LED driving power supply includes a driving circuit board and components provided thereon;

[0008] The light bar is electrically connected to the driving circuit board through a flexible substrate. The flexible substrate includes a first base layer, a first circuit layer and a first solder resist layer. The two ends of the flexible substrate respectively have a first solder pad and a second solder pad exposing the first circuit layer. The first solder pad is used to be soldered to the light bar, and the second solder pad is used to be soldered to the LED driving power supply.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0010] Optionally, the light bar includes a light bar substrate and LED lamp beads arranged thereon, the light bar substrate includes a second base layer, a second circuit layer and a second solder resist layer, the light bar substrate has a light bar pad exposing the second circuit layer, and the first pad is welded to the light bar pad.

[0011] Optionally, the driving circuit board is provided with a circuit pin, the second soldering pad has a through hole, and the second soldering pad is soldered to the circuit pin.

[0012] Optionally, the lamp holder includes a cylinder, and a first seal and a second seal provided at both ends of the cylinder and snap-fitted with the cylinder, the first seal is plug-fitted with the lamp tube, and the second seal is provided with the conductive member.

[0013] Optionally, the first sealing head is provided with a through hole for the flexible substrate to pass through, and a peripheral wall of the through hole is provided with a sedimentation groove for positioning the light bar.

[0014] Optionally, the light bar is as wide as the flexible substrate.

[0015] Optionally, an inner wall of the cylinder is provided with a mounting groove for limiting the movement of the driving circuit board.

[0016] Optionally, the component includes an adjustment switch with a dial head, and a welding hole is provided on the surface of the cylinder for the dial button to pass through and connect to the dial head.

[0017] The LED lamp of this application has at least the following technical effects:

[0018] The first soldering pad of the flexible substrate can be pre-soldered to the light bar before installation. After soldering, the light bar is placed into the lamp tube for assembly, and the flexible substrate naturally extends and exposes the end of the lamp tube. This provides ample space for soldering the second soldering pad of the flexible substrate to the LED driver, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of an LED lamp in one embodiment of the present application;

[0020] Figure 2 for Figure 1 Assembly diagram of

[0021] Figure 3 for Figure 1 Schematic diagram of the assembly of the lamp holder in the LED lamp shown;

[0022] Figure 4 This is a schematic diagram of the lamp holder assembly of an LED lamp in one embodiment of the present application;

[0023] Figure 5This is a schematic diagram of the lamp holder assembly of an LED lamp in one embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the electrical connections of the flexible substrate of the LED lamp in one embodiment of the present application;

[0025] Figure 7 This is a schematic diagram of the electrical connection between the flexible substrate and the light strip of the LED lamp in one embodiment of the present application;

[0026] Figure 8 This is a schematic diagram of the electrical connection between the flexible substrate and the driver circuit board of the LED lamp in one embodiment of the present application;

[0027] The reference numerals in the figures are described as follows:

[0028] 100, lamp tube; 110, light bar; 120, light bar substrate; 121, second base layer; 122, second circuit layer; 123, second solder resist layer; 130, LED lamp beads; 140, light bar solder pad; 141, circuit pin;

[0029] 200, lamp holder; 210, LED driver power supply; 220, driver circuit board; 230, components; 231, dial head; 232, dial button; 240, barrel; 241, protrusion; 242, mounting groove; 243, through hole; 250, first end cap; 251, first buckle hole; 252, through hole; 260, second end cap; 261, second buckle hole; 270, conductive member; 300, lamp tail;

[0030] 400 , flexible substrate; 401 , first base layer; 402 , first circuit layer; 403 , first solder resist layer; 410 , first solder pad; 420 , second solder pad; 421 , solder hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] In this application, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number or order of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In this application, the terms "comprises" and "comprising" and any variations thereof are intended to cover non-exclusive inclusions, for example, a system, product or apparatus comprising a list of elements is not necessarily limited to those elements expressly listed but may include other elements not expressly listed or inherent to such products or apparatuses.

[0036] In this application, the terms "corresponding," "corresponding," "matching," and "adapting," such as "B corresponding to A," "B corresponding to A," "A corresponds to B," or "B corresponds to A," indicate that B corresponds to A in shape, position, or function, and that B can be determined based on A. Determining B based on A does not mean determining B solely based on A; B can also be determined based on A and / or other information.

[0037] See also Figures 1 to 5 One embodiment of the present application provides an LED lamp, including a lamp tube 100, a lamp base 200 and a lamp tail 300 respectively connected to both ends of the lamp tube 100. A light bar 110 (light source board) is disposed within the lamp tube 100. The light bar 110 includes a light bar substrate 120 and LED lamp beads 130 disposed thereon. An LED driver power supply 210 is disposed within the lamp base 200. The LED driver power supply 210 includes a driver circuit board 220 and components 230 disposed thereon.

[0038] The lamp holder 200 includes a cylindrical body 240, and a first end cap 250 and a second end cap 260 disposed at opposite ends of the cylindrical body 240 and engaging with the cylindrical body 240. For example, the first end cap 250 and the second end cap 260 are respectively provided with a first buckle hole 251 and a second buckle hole 261. The inner wall of the cylindrical body 240 is provided with two sets of latching protrusions 241 that respectively engage with the first buckle hole 251 and the second buckle hole 261. The inner wall of the cylindrical body 240 is provided with a mounting groove 242 for limiting the movement of the driver circuit board 220.

[0039] The components 230 on the driver circuit board 220 include a regulating switch with a dial head 231. The surface of the barrel 240 is provided with a through-hole 243 for the dial button 232 to pass through and connect to the dial head 231. The lamp holder 200 is provided with a conductive member 270 for connecting to an external power source. The conductive member 270 is specifically disposed on the second end cap 260. The first end cap 250 is plugged into and mated with the lamp tube 100.

[0040] See also Figures 6 to 8 The light bar 110 is electrically connected to the driver circuit board 220 via the flexible substrate 400. The first end cap 250 defines a through-hole 252 for the flexible substrate 400 to pass through. A settling groove is provided around the perimeter of the through-hole 252 to position the light bar 110. The settling groove allows the light bar 110 to be extended and extended into the interior of the first end cap 250 for easier observation, inspection, and operation. The light bar 110 can be the same width as the flexible substrate 400, and the flexible substrate 400 can be a soft light bar.

[0041] The flexible substrate 400 includes a first base layer 401, a first circuit layer 402 and a first solder resist layer 403. The two ends of the flexible substrate 400 respectively have a first solder pad 410 and a second solder pad 420 exposing the first circuit layer 402. The first solder pad 410 is used for soldering to the light bar 110, and the second solder pad 420 is used for soldering to the LED driver power supply 210.

[0042] The lamps provided in the various embodiments of the present application can be used as pluggable lamps. The first soldering pad 410 of the flexible substrate 400 can be pre-soldered to the light bar 110 before installation. After soldering, the light bar 110 is inserted into the lamp tube 100 for assembly, with the flexible substrate 400 naturally extending and exposed at the end of the lamp tube 100. This provides ample operating space for soldering the second soldering pad 420 of the flexible substrate 400 to the LED driver 210, improving production efficiency. The LED driver 210 is then housed within the barrel 240 of the lamp holder 200, and the barrel 240, first end cap 250, and second end cap 260 of the lamp holder 200 are snap-fitted and assembled. The plate-shaped flexible substrate 400 is naturally curled and housed within the barrel 240, ensuring circuit safety.

[0043] Furthermore, the light bar substrate 120 includes a second base layer 121, a second circuit layer 122, and a second solder resist layer 123. The light bar substrate 120 has a light bar pad 140 that exposes the second circuit layer 122. The light bar substrate 120 also includes an aluminum substrate layer. The second base layer 121, the second circuit layer 122, and the second solder resist layer 123 are sequentially located on the aluminum substrate layer, wherein the second base layer 121 is an insulating layer. The first solder pad 410 is welded to the light bar pad 140. For example, the first solder pad 410 and the light bar pad 140 face the same direction and are fixed by jumper welding. The driver circuit board 220 is provided with a circuit pin 141, and the second solder pad 420 has a solder hole 421. The second solder pad 420 is welded to the circuit pin 141 to ensure structural strength.

[0044] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as no contradiction exists between these combinations of technical features, they 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 deemed that the drawing also discloses examples of combinations of the various embodiments involved.

[0045] The above-described embodiments merely represent several implementation methods of the present application. 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 a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, and such modifications and improvements are all within the scope of protection of the present application.

Claims

1. LED lamp, characterized in that, It includes a lamp tube, and a lamp head and a lamp tail respectively connected to both ends of the lamp tube, and a light strip is provided in the lamp tube; The lamp holder is provided with a conductive member for connecting to an external power supply, and an LED driving power supply is provided inside the lamp holder, and the LED driving power supply includes a driving circuit board and components provided thereon; The light bar is electrically connected to the driving circuit board through a flexible substrate. The flexible substrate includes a first base layer, a first circuit layer and a first solder resist layer. The two ends of the flexible substrate respectively have a first solder pad and a second solder pad exposing the first circuit layer. The first solder pad is used to be soldered to the light bar, and the second solder pad is used to be soldered to the LED driving power supply.

2. The LED lamp according to claim 1, wherein: The light bar includes a light bar substrate and LED lamp beads arranged thereon, the light bar substrate includes a second base layer, a second circuit layer and a second solder resist layer, the light bar substrate has a light bar pad exposing the second circuit layer, and the first pad is welded to the light bar pad.

3. The LED lamp according to claim 1, wherein: The driving circuit board is provided with a circuit pin, the second soldering pad has a through hole, and the second soldering pad is soldered to the circuit pin.

4. The LED lamp according to claim 1, wherein: The lamp holder includes a cylinder, and a first seal and a second seal provided at both ends of the cylinder and snap-fitted with the cylinder. The first seal is plug-fitted with the lamp tube, and the second seal is provided with the conductive member.

5. The LED lamp according to claim 4, wherein: The first sealing head is provided with a through hole for the flexible substrate to pass through, and a peripheral wall of the through hole is provided with a sedimentation groove for positioning the light bar.

6. The LED lamp according to claim 5, wherein: The light bar has the same width as the flexible substrate.

7. The LED lamp according to claim 5, wherein: The inner wall of the cylinder is provided with a mounting groove for limiting the movement of the driving circuit board.

8. The LED lamp according to claim 5, wherein: The component comprises an adjusting switch with a dial head, and a welding hole for the dial button to pass through and connect to the dial head is opened on the surface of the cylinder.

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