CN209856806U - LED straight lamp - Google Patents
LED straight lamp Download PDFInfo
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- CN209856806U CN209856806U CN201920263244.7U CN201920263244U CN209856806U CN 209856806 U CN209856806 U CN 209856806U CN 201920263244 U CN201920263244 U CN 201920263244U CN 209856806 U CN209856806 U CN 209856806U
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Abstract
The utility model provides a LED straight tube lamp, a serial communication port, include: the lamp tube is internally provided with a power supply; the lamp panel is arranged in the lamp tube, and a plurality of light sources are arranged on the lamp panel; the two lamp caps are respectively arranged at two ends of the lamp tube; the power has power supply circuit board, power supply circuit board is in the axial of fluorescent tube has both ends, and wherein one end is closer to rather than matching the lamp holder, power supply circuit board is closer to rather than matching the one end of lamp holder with the one end electricity of lamp plate is connected.
Description
Technical Field
The utility model belongs to the technical field of LED lighting device, specifically speaking relates to a LED straight tube lamp.
Background
LED lighting is widely used because of its advantages of energy saving, long life, etc. The LED fluorescent lamp is commonly called a straight lamp, and generally includes a lamp tube, a lamp panel disposed in the lamp tube and having a light source, and lamp caps disposed at two ends of the lamp tube, wherein a power supply is disposed in the lamp caps, and the light source is electrically connected to the power supply through the lamp panel. Wherein, the light source is a plurality of LED lamp pearls of arranging on the lamp plate, and a plurality of LED lamp pearls are arranged along fluorescent tube length direction in proper order.
LED straight tube lamp among the prior art includes power supply circuit board and lamp plate, and power supply circuit board keeps away from the one end of rather than the lamp holder that matches and is connected with the lamp plate. Taking T5 lamp as an example, the connection method of the power circuit board and the lamp panel of this product generally includes the following steps due to the small caliber (about 16mm) of the lamp: 1. fixing the lamp panel on the inner circumferential surface of the lamp tube, and simultaneously reserving a free part of the lamp panel which is not adhered to the inner surface of the lamp tube; 2. welding the power supply circuit board and the free part of the lamp panel through a lead; 3. the power circuit board is inserted into the lamp tube.
Referring to fig. 5 and 6, it is assumed that the lamp panel is a flexible circuit board, the connection between the power circuit board and the flexible circuit board needs to be completed outside the lamp tube (the diameter of the lamp tube is small, the connection between the power circuit board and the flexible circuit board is realized inside the lamp tube, and the difficulty in realizing the process is high), and when the connection is completed, the power circuit board is inserted into the lamp tube, which has the following disadvantages:
1. after the connection between the power circuit board and the flexible circuit soft board is finished outside the lamp tube, the power circuit board needs to be inserted into the lamp tube, and the process difficulty of inserting the power circuit board into the lamp tube is high, particularly for T5 products, the power circuit board is more difficult to insert into the tube because the diameter of the T5 product is small;
2. the end of the flexible circuit soft board needs to be provided with a free part, so that the free part can be driven to enter the lamp tube when the power circuit board is inserted into the lamp tube, the length of the free part at least needs to be larger than the stroke of the power circuit board inserted into the lamp tube from the outside of the lamp tube, if the length of the free part is too long, the connection stability is reduced, after the power circuit board is inserted into the lamp tube, the arrangement condition of the free part in the lamp tube cannot be controlled, the condition of shielding a light source can occur, and uncertain factors exist;
3. after the power circuit board is connected with the flexible circuit soft board, the flexible circuit board is possibly pulled to be stripped from the power circuit board in the process of inserting the power circuit board into the lamp tube, so that connection failure is caused;
4. the power circuit board is in direct contact with the flexible circuit soft board, and the risk of sparking exists.
If the power supply includes electronic components, the electronic components are all disposed on the power circuit board of the power supply, and therefore, the power circuit board needs to have a sufficient length to dispose the electronic components, which is not favorable for controlling the length of the power circuit board, and increases the material cost.
Given that the electronic components of the power supply include electrolytic capacitors, there are size limitations on the electronic components in some applications. For example, in a T5 lamp tube, the tube diameter is about 16 mm. It is therefore desirable to ensure that the electronic components are sized to fit within the lamp envelope without compromising performance. The ripple current requirement of the product is related to the electrolytic capacity of the product, and the main factor determining the capacity of the product is the volume of the electrolytic capacitor. After the electrolytic capacitor is arranged on the power circuit board, the size of the electrolytic capacitor is limited not only by the tube diameter of the lamp tube, but also by the power circuit board.
In summary, in view of the deficiencies and defects of the LED straight tube lamp in the prior art, how to design the LED straight tube lamp reduces the difficulty of inserting the power circuit board into the tube is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
This abstract describes many embodiments of the invention. The term "invention" is used merely to describe some embodiments disclosed in this specification (whether or not in the claims), and not a complete description of all possible embodiments. Certain embodiments described above as various features or aspects of the invention may be combined in different ways to form a LED straight tube lamp or a portion thereof.
The utility model provides a new LED straight tube lamp to and the characteristic of each aspect, in order to solve above-mentioned problem.
The utility model provides a LED straight tube lamp, a serial communication port, include:
the lamp tube is internally provided with a power supply;
the lamp panel is arranged in the lamp tube, and a plurality of light sources are arranged on the lamp panel; and
two lamp caps respectively arranged at two ends of the lamp tube;
the power has power supply circuit board, power supply circuit board is in the axial of fluorescent tube has both ends, and wherein one end is closer to rather than matching the lamp holder, power supply circuit board is closer to rather than matching the one end of lamp holder with the one end electricity of lamp plate is connected.
Further, the lamp plate has the first face that sets up the light source and keeps away from the second face of light source, power supply circuit board includes power supply circuit layer, power supply circuit board has first face and second face, power supply circuit board's second face is located power supply circuit board has one side of power supply circuit layer, the lamp plate first face with power supply circuit board the second face sets up relatively.
Furthermore, the power circuit board is provided with an electronic element on the power circuit layer, and the electronic element is arranged between the first surface of the lamp panel and the second surface of the power circuit board.
Further, the electronic component includes a capacitor, a transformer, an inductor, or a resistor.
Furthermore, the number of the power circuit boards in the lamp tube is one.
Furthermore, the lamp panel is a flexible circuit soft board, a part of the flexible circuit soft board is fixed on the inner circumferential surface of the lamp tube, two ends of the flexible circuit soft board are not fixed on the inner circumferential surface of the lamp tube to form a free portion, the power circuit board of the power supply is provided with a connecting portion, and the free portion is connected with the connecting portion of the power circuit board.
Furthermore, the length of the free part at one end of the flexible circuit soft board along the axial direction of the lamp tube is greater than that of the connecting part of the power circuit board.
Furthermore, the length of the free part at one end of the flexible circuit soft board along the axial direction of the lamp tube is smaller than that of the power supply circuit board.
Further, the lamp plate has the first face that sets up the light source and keeps away from the second face of light source, power supply circuit board includes the power supply circuit layer, power supply circuit board has first face and second face, the second face of power supply circuit board is located power supply circuit board has one side of power supply circuit layer, the lamp plate first face with power supply circuit board first face sets up relatively.
Furthermore, a circuit protection layer is arranged between the lamp panel and the power circuit board.
The utility model also provides a LED straight tube lamp, include:
a lamp tube;
two lamp caps respectively arranged at two ends of the lamp tube;
a circuit board assembly having a long circuit board and a short circuit board electrically connected to each other, the short circuit board having a power module thereon;
the long circuit board is a flexible circuit soft board or a flexible substrate used as a lamp panel, and is provided with a plurality of light sources and electrically connected with the power supply module;
the short circuit board is a power circuit board, the power circuit board is arranged at two ends of the lamp tube in the axial direction, one end of the power circuit board is closer to the lamp holder matched with the power circuit board, and one end of the power circuit board, which is closer to the lamp holder matched with the power circuit board, is connected with one end of the lamp panel.
Further, the short circuit board is provided with a first short circuit board and a second short circuit board, and electronic components in the power module are respectively arranged on the first short circuit board and the second short circuit board.
Further, the length dimension of the first short circuit board along the axial direction of the lamp tube is shorter than the length dimension of the second short circuit board.
Furthermore, one end of the long circuit board is provided with the electronic element of the power module, so that the first short circuit board is formed.
Compared with the prior art, the utility model outstanding and profitable technological effect is: in the assembling and connecting process, the power supply circuit board can be inserted into the lamp tube in advance, then one end of the power supply circuit board, which is closer to the lamp holder matched with the power supply circuit board, is connected with one end of the lamp panel, and as the tube insertion is finished in advance, the power supply circuit board is not required to be integrally inserted into the lamp tube after being connected with the lamp panel like the prior art, so that the difficulty of the production process is reduced, and the problem that the power supply circuit board is difficult to insert into the tube in the prior art is solved; the first surface of the lamp panel is separated from the second surface of the power supply circuit board through the electronic element, so that the risk of sparking caused by contact between the first surface of the lamp panel and the power supply circuit board is reduced; during welding, through the arrangement of the pin header, one end of the free part does not need to be wound around an electronic element on the power circuit board and is directly welded with the power circuit board, and the difficulty of a welding process is reduced.
Drawings
Fig. 1 is an exploded perspective view showing a LED straight lamp according to an embodiment of the present invention;
FIG. 2 is a partial schematic view showing the connection between the lamp panel of the LED straight tube lamp of FIG. 1 and a power supply;
fig. 3 is a perspective view showing a long and short circuit board of the LED straight lamp according to an embodiment of the present invention;
FIG. 4 is a perspective view showing a lamp cap structure of the LED straight lamp in FIG. 3;
FIG. 5 is a perspective view showing the connection between the lamp panel and the power supply of a prior art LED straight lamp;
FIG. 6 is a perspective view showing a state of the prior art in which a power supply is connected to a lamp panel;
FIG. 7 is a schematic diagram showing one configuration of a power supply;
FIG. 8 is a schematic diagram showing another configuration of a power supply;
FIG. 9 is a schematic view showing the connection of the lamp panel to a power supply;
FIG. 10 is a partial schematic view illustrating the connection of the lamp panel to a power supply in other embodiments;
fig. 11 is a partial schematic view showing the connection between the lamp panel and the power supply in other embodiments.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. The following directions such as "axial direction", "above", "below", etc. are all for showing the structural position relationship more clearly, and are not limiting to the present invention. In the present invention, the terms "vertical", "horizontal" and "parallel" are defined as: including ± 30% of cases on the basis of the standard definition. For example, vertical generally refers to an angle of 90 degrees relative to a reference line, but in the present invention, vertical refers to a condition that includes within 60 degrees to 120 degrees.
Referring to fig. 1, the present invention provides, in an embodiment, an LED straight lamp, including: the lamp comprises a lamp tube 1, a lamp panel 2 arranged in the lamp tube 1 and two lamp caps 3 respectively arranged at two ends of the lamp tube 1, wherein the lamp caps 3 are provided with hollow conductive pins 4 used for connecting an external power supply. The lamp tube 1 can be a plastic lamp tube or a glass lamp tube, and the two lamp caps 3 have the same or different sizes.
In an embodiment, the lamp cap 3 provided by the present invention may be a plastic lamp cap (not shown).
In an embodiment, the lamp cap 3 provided by the present invention can be made of all metal, and at this time, an insulator 31 is added at the lower portion of the hollow conductive pin 4 to resist high voltage.
In an embodiment, the lamp cap 3 of the present invention is provided with a hole (not shown) for heat dissipation. Therefore, heat generated by the power module inside the lamp cap 3 can be dissipated without causing the inside of the lamp cap 3 to be in a high-temperature state, so as to avoid the reliability reduction of elements inside the lamp cap 3.
In one embodiment, the lamp tube 1 has a diffusion film (not shown), and the light generated by the light source 21 passes through the diffusion film and then passes out of the lamp tube 1. The diffusion film plays a role in diffusing light emitted from the light source 21, and therefore, as long as light can penetrate through the diffusion film and then pass out of the lamp tube 1, the arrangement of the diffusion film can have various forms, for example: the diffuser film may be coated or overlaid on the inner circumferential surface of the lamp tube 1, or a diffuser coating (not shown) applied on the surface of the light source 21, or a diffuser film covering (or shielding) the light source 21 as an outer cover.
In an embodiment, referring to fig. 2, the lamp panel 2 is provided with a plurality of light sources 21, the lamp cap 3 is provided with a power supply 5 therein, and the light sources 21 and the power supply 5 are electrically connected through the lamp panel 2. In each embodiment of the present invention, the power supply 5 can be a single body (i.e. all power supply modules are integrated in one component), and is disposed in the lamp head 3 at one end of the lamp tube 1; alternatively, the power supply 5 may be divided into two parts, which are called dual bodies (i.e. all power supply modules are respectively disposed in two parts), and the two parts are respectively disposed in the lamp caps 3 at two ends of the lamp tube 1. The power supply 5 may be a power circuit board 51 carrying a power module, or a power module may be carried at one end of the lamp panel 2, thereby forming the power supply 5. In this embodiment, the power source 5 may also be disposed in the lamp tube 1. It should be noted that, in this embodiment, the power supply 5 is disposed in the lamp head 3 or the lamp tube 1, depending on the length of the power supply 5 in the axial direction of the LED straight lamp, and more than one is disposed in the lamp head 3 or the lamp tube 1, for example, more than half of the length of the power supply 5 is disposed in the lamp head 3, so that the power supply 5 is considered to be disposed in the lamp head 3, and more than half of the length of the power supply 5 is disposed in the lamp tube 1, so that the power supply 5 is considered to be disposed in the lamp tube 1. In addition, when the base 3 and the lamp 1 are installed to have an overlapping portion, more than half of the length of the power supply 5 is located in the base 3, and at the same time, more than half of the length of the power supply 5 is located in the lamp 1, the power supply 5 may be considered to be located in the lamp 1 or the power supply 5 may be considered to be located in the base 3.
In this embodiment, the power supply 5 has a power supply circuit board 51, the power supply circuit board 51 has two ends in the axial direction of the lamp tube 1, one end of the power supply circuit board 51 is closer to the lamp cap 3 that is matched with the power supply circuit board, and one end of the power supply circuit board 51 that is closer to the lamp cap 3 that is matched with the power supply circuit board is connected with one end of the lamp panel 2 through welding. Therefore, in the assembling and connecting process, the power circuit board 51 can be inserted into the lamp tube 1, and then one end of the power circuit board 51 closer to the lamp cap 3 matched with the power circuit board is connected with one end of the lamp panel 2, and since the tube insertion is completed in advance, the power circuit board 51 is not required to be integrally inserted into the lamp tube 1 after the power circuit board 51 is connected with the lamp panel 2 like the prior art, so that the difficulty of the production process is reduced, and the problem that the power circuit board 51 is difficult to be inserted into the lamp tube in the prior art is solved.
In other embodiments, the projection length of the lamp panel 2 in the extended state is greater than the length of the lamp tube 1, so that at least a part of the lamp panel 2 can be exposed outside the lamp tube 1 in the extended state of the lamp panel 2, and the power circuit board 51 and the part of the lamp panel 2 exposed outside the lamp tube 1 are connected conveniently, thereby reducing the connection difficulty.
In other embodiments, a side of the lamp panel 2 having the light source 21 is defined as a first side 201, and a side of the lamp panel 2 away from the light source 21 is defined as a second side 202, that is, the first side 201 and the second side 202 are two opposite sides of the lamp panel 2. A plurality of light sources 21 are disposed on the first surface 201 and electrically connected to the circuit layer of the lamp panel 2. The power circuit board 51 includes a power circuit layer 511, and the power circuit board 51 defines a first surface 501 and a second surface 502 opposite to each other, and the second surface 502 is located on the side of the power circuit board 51 having the power circuit layer 511. Electronic components are provided on the power circuit layer 511 of the power circuit board 51. This embodiment places lamp plate 2 in power supply circuit board 51's top, and first face 201 of lamp plate 2 sets up with power supply circuit board 51's second face 502 relatively, and such benefit is because set up the electronic component of power 5 on the power supply circuit layer 511, consequently, first face 201 of lamp plate 2 separates through foretell electronic component with power supply circuit board 51's second face 502, has reduced the risk that first face 201 of lamp plate 2 and power supply circuit board 51 struck sparks because of the contact.
In this embodiment, the electronic components on the power circuit layer 511 include capacitors, transformers, inductors, or resistors, that is, between the lamp panel 2 and the power circuit board 51, the capacitors, transformers, inductors, or resistors are used to separate the lamp panel 2 from the power circuit board 51, so that the distance between the lamp panel 2 and the power circuit board 51 is kept, and the risk of sparking is reduced.
In other embodiments, the lamp panel 2 and the power circuit board 51 are located at two opposite sides of the lamp tube 1, respectively, in the width direction of the lamp tube 1, where the lamp panel 2 and the power circuit board 51 are located at two opposite sides of the lamp tube 1. In other words, the lamp tube 1 has a central axis, and a plane parallel to the power circuit board passes through the central axis of the lamp tube, and at this time, the lamp panel 2 and the power circuit board 51 are respectively located on two sides of the plane. So, guaranteed on the one hand that lamp plate 2 and power supply circuit board 51 have certain interval to reduce lamp plate 2 and power supply circuit board 51 because of the risk of contact and strike sparks.
In other embodiments, the first surface 201 of the lamp panel 2 may be disposed opposite to the first surface of the power circuit board 51 (not shown), and at this time, the first surface of the lamp panel 2 may be prevented from directly contacting the first surface of the power circuit board 51 by disposing a circuit protection layer between the lamp panel 2 and the power circuit board 51, so as to reduce the risk of sparking. This circuit protective layer can directly set up on lamp plate 2 or circuit protective layer, also can set up solitary circuit protective layer to place between lamp plate 2 and circuit protective layer. However, in the case of the straight LED tube lamp of T5 or T6, since the tube diameter itself is small, the space in the tube is more confined by adding the circuit protection layer, and the difficulty of inserting the power circuit board 51 into the tube is increased.
In this embodiment, the lamp panel 2 may be any one of a strip-shaped aluminum substrate, an FR4 board, or a flexible circuit board. Since the lamp tube 1 of the present embodiment is a glass lamp tube, if the lamp panel 2 is made of a rigid strip-shaped aluminum substrate or FR4 board, when the lamp tube 1 is broken, for example, cut into two sections, the whole lamp tube 1 can still be kept in a straight tube state, and at this time, a user may think that the LED straight tube lamp can be used and installed by himself, which is likely to cause an electric shock accident. Because the flexible circuit soft board has the characteristics of strong flexibility and easy bending, and the problem that the flexibility and the bending property of the rigid strip aluminum substrate and the FR4 board are insufficient is solved, the lamp panel 2 of the embodiment adopts the flexible circuit soft board, so that after the lamp tube 1 is broken, the broken lamp tube 1 cannot be supported to keep a straight tube state, so as to inform a user that the LED straight tube lamp cannot be used, and avoid the occurrence of electric shock accidents. Therefore, when the flexible circuit soft board is adopted, the problem of electric shock caused by the broken glass tube can be relieved to a certain extent.
In one embodiment, the flexible circuit board as the lamp panel 2 includes a circuit layer with a conductive effect, and the light source 21 is disposed on the circuit layer and electrically connected to the power source 5 through the circuit layer. The circuit layer having a conductive effect in this specification may also be referred to as a conductive layer. In this embodiment, the flexible circuit board may further include a dielectric layer overlying the circuit layer, wherein the area of the dielectric layer is equal to or slightly smaller than that of the circuit layer. The circuit layer is electrically connected to the power source 5 for passing a direct current. The dielectric layer is adhered to the inner circumferential surface of the lamp tube 1 by an adhesive on the surface opposite to the circuit layer. The wiring layer may be a metal layer or a power layer with wires (e.g., copper wires) disposed thereon.
In the above embodiment, most of the flexible circuit board as the lamp panel 2 is fixed to the inner circumferential surface of the lamp 1, and only two ends of the flexible circuit board are not fixed to the inner circumferential surface of the lamp 1, and the lamp panel 2 not fixed to the inner circumferential surface of the lamp 1 forms the free portion 22. The power supply circuit board 51 of the power supply 5 has a connection portion 512, and the free portion 22 is connected to the connection portion 512 of the power supply circuit board 51. The connection portion 512 is a portion for connecting the free portion 22, and the connection portion 512 does not have an electronic component.
In the present embodiment, the lamp panel 2 and the free portion 22 have the same structure, and the free portion 22 is a portion of the lamp panel 2 for connecting the power circuit board 51. Lamp plate 2 is flexible formula circuit board, because power supply circuit board 51 is connected with the one end of lamp plate 2 more near the one end of the lamp holder 3 rather than matching, compares prior art, and on the one hand, reducible free portion 22's length reduces the required length of lamp plate 2 on the whole, has practiced thrift material cost, and on the other hand compares prior art, because free portion 22 length reduces, its mobilizable space reduces, reduces the uncertainty that brings when going into the pipe. In other embodiments of the present invention, since the free portion 22 is mainly used for connecting the power circuit board 51, it is not necessary to configure a light source, so as to avoid the damage of the electronic component on the power circuit board 51 to the light source 21 when the free portion 22 of the lamp panel 2 and the power circuit board 51 are overlapped in the lamp tube 1.
In the manufacturing process of the LED straight tube lamp of the present embodiment, the lamp panel 2 is disposed in the lamp tube 1, the lamp panel 2 is fixed on the inner circumferential surface of the lamp tube 1, only two ends of the lamp panel are not fixed on the inner circumferential surface of the lamp tube 1, so as to form the free portion 22, one end of the free portion 22 exceeds the end of the lamp tube 1, the power circuit board 51 is inserted into the lamp tube 1, the end of the power circuit board 51 is exposed outside the lamp tube 1 (at least, it is ensured that the connecting portion 512 of the power circuit board 51 is exposed outside the lamp tube 1), the connecting portion 512 of the power circuit board 51 is fixed with the free portion 22, and finally, the portion of the power circuit board 51 exposed outside the lamp tube 1 and the fixed. Since most of the power circuit board 51 is inserted before being fixed, only a small section of the power circuit board 51 exposed outside the lamp tube 1 is inserted into the lamp tube 1, which does not increase the difficulty of the production process. In this embodiment, the power circuit board 51 and the lamp panel 2 are fixed by welding.
In one embodiment, the length of the free portion 22 at one end of the flexible circuit board along the axial direction of the lamp tube 1 is greater than the length of the connecting portion 512 of the power circuit board 51. After the connecting portion 512 is welded to the free portion 22, the free portion 22 can provide enough space for movement when the connecting portion 312 is inserted into the lamp tube 1.
In one embodiment, the length of the free portion 22 at one end of the flexible circuit board along the axial direction of the lamp tube 1 is smaller than the length of the power circuit board 51. The shorter the length of the free portion 22, the more advantageous it is to reduce the possibility of curling the flexible circuit board during insertion of the power circuit board 51 into the lamp 1.
In one embodiment, the power supply 5 has only one power supply circuit board 51, a part of the power supply circuit board 51 is disposed in the lamp cap 3 on one side of the LED straight lamp, and the length of the lamp cap 3 accommodating part of the power supply circuit board 51 is greater than that of the lamp cap 3 on the other side.
In one embodiment, the long base 3 includes the light shielding portion 32, the light shielding portion 32 is disposed on the lamp tube 1, and the light shielding portion 32 prevents the user from seeing the power circuit board 51 from the outside, thereby improving the overall appearance of the LED straight tube lamp. The light shielding portion 32 in this embodiment is separated from the base 3 (but may be collectively referred to as the base 3), and the light shielding portion 32 is fixed to the lamp tube 1 by means of adhesive.
Referring to fig. 2, in an embodiment of the present invention, the power circuit board 51 is provided with the pin header 513, the lamp panel 2 is welded to the pin header 513, and the lamp panel 2 is electrically connected to the power circuit board 51 through the pin header 513. Therefore, when soldering, one end of the free portion 22 does not need to be directly soldered to the power circuit board 51 by bypassing the electronic component on the power circuit board 51, thereby reducing the difficulty of the soldering process.
One end that row needle 513 is connected with lamp plate 2 in this embodiment sets up contact site 5131, contact site 5131 is bent by row needle 513 itself and is formed, when lamp plate 513 welds with the contact site 5131 of row needle 513, because contact site 5131's setting, row needle 513 increases with the area of contact of lamp plate 2, make row needle 513 be difficult to damage lamp plate 2, and welding area increases, make structural connection more reliable, during electric connection in addition, because area of contact increases, electric connection's reliability improves.
As shown in fig. 9, in other embodiments, the power circuit board 51 may be directly connected to the lamp panel 2 by soldering. In one of the methods, the free portion 22 bypasses the power circuit board 51 and is directly connected with the power circuit board 51 by welding, and the electrical connection is realized. Specifically, the first surface 201 of the lamp panel 2 is connected to the first surface 501 of the power circuit board 51. Still another way is to provide a through hole 5101 on the power circuit board 51, and after the free portion 22 of the lamp panel 2 passes through the through hole 5010, the first surface 201 of the lamp panel 2 is connected with the first surface 501 of the power circuit board 51, and due to the provision of the through hole 5101, the through hole 5101 has a certain limiting effect on the free portion 22 of the lamp panel 2, so that the free portion 22 is more conveniently fixed, and the difficulty in welding is reduced.
In other embodiments, one end of the power circuit board 51 of the power supply 5 has a male plug, the end of the lamp panel 2 has a female plug, and the male plug of the power supply 5 is inserted into the female plug of the lamp panel. Wherein, the contact pin of public affairs inserting can be on a parallel with power supply circuit board, and at this moment, the one end of lamp plate 2 needs the bending and with the cooperation of public affairs inserting. Or the pin of public affairs insert can be perpendicular to power supply circuit board to be located between the power supply circuit board, so, the part that 2 tip of reducible lamp plate need be crooked.
In other embodiments, the power supply 5 and the lamp panel 2 may also adopt a wire to electrically connect the power supply 5 and the lamp panel 2. Specifically, as shown in fig. 10 and 11, the power supply 5 has a power supply circuit board 51, and the power supply circuit board 51 and the lamp panel 2 are connected by a wire 506. Two ends of the conducting wire 506 are respectively welded on the power circuit board 51 and the lamp panel 2. As shown in fig. 10, the power circuit board 51 has two ends in the axial direction of the lamp tube 1, wherein one end is closer to the lamp cap 3 that is matched with the power circuit board 51, and one end of the power circuit board 51 that is closer to the lamp cap 3 that is matched with the power circuit board is connected to one end of the lamp panel 2 (one end of the lamp panel 2 that is close to the adjacent lamp cap 3) through a wire 506, so that the length of the wire 506 can be controlled, and the tube-entering stroke of the power circuit board 51 is reduced. During connection, at least a portion of the power circuit board 51 may be inserted into the lamp tube 1, and the portion exposed outside the lamp tube 1 is connected to the lamp panel 2 through the conducting wire 506. As shown in fig. 11, the power circuit board 51 has two ends in the axial direction of the lamp tube 1, one end of the power circuit board 51 is closer to the lamp cap 3 that is matched with the power circuit board, and the other end of the power circuit board is far from the lamp cap 3 that is matched with the power circuit board, one end of the power circuit board 51 that is far from the lamp cap 3 that is matched with the power circuit board is connected with one end of the lamp panel 2 (the end of the lamp panel 2 that is close to the adjacent lamp cap 3) through a wire 506 through the wire 506, when the lamp panel 3 adopts a hard substrate (such as an aluminum substrate and an FR4 board), the lamp panel 3 cannot be bent, so that the tube insertion. During specific operation, the power circuit board 51 is connected with the lamp panel 2 through the conducting wire 506 when being outside the lamp tube 1, and then the power circuit board 51 is at least partially inserted into the lamp tube 1 to complete tube entering.
In addition, the lead 506 may be connected to a position in the middle in the axial direction of the power circuit board 51. If a plurality of wires 506 are provided, the positions of the wires 506 soldered on the power circuit board 51 may be respectively provided at one end of the power circuit board 51 closer to the base 3 to which it is fitted, one end of the power circuit board 51 farther from the base 3 to which it is fitted, or the middle portion of the power circuit board 51 in the axial direction, whereby the soldering positions of the wires 506 on the power circuit board 51 may be selected according to different situations. For example, if the wires 506 are provided in 3 sets, two sets of the wires 506 are connected to the power circuit board 51 at the end away from the associated base 3, and the other set is connected to the power circuit board 51 at a position axially intermediate thereto. Or one of the wires 506 is connected to the end of the power circuit board 51 far from the associated base 3, one is connected to the power circuit board 51 at a position axially midway along the axis, and the other is connected to the end of the power circuit board 51 closer to the associated base 3.
Referring to fig. 3, in other embodiments, the lamp panel 2 and the power supply 5 may be replaced by a circuit board assembly carrying a power supply module. The circuit board assembly has a long circuit board 6 and a short circuit board 7, the long circuit board 6 and the short circuit board 7 being electrically connected to each other. The short circuit board 7 is provided with a power module which integrally forms the power supply 5.
The long circuit board 6 may be the flexible circuit board or the flexible substrate as the lamp panel 2, and has a circuit layer. The way that the circuit layer and the power module electricity of lamp plate 2 are connected can have different electric connection mode according to the actual in service condition. The power module is electrically connected with the long circuit board 6.
The short circuit board 7 may be the power circuit board 51 described above, and may be connected to the long circuit board 6 in the same manner as the above-described embodiment.
The short circuit board 7 can be divided into a first short circuit board 71 and a second short circuit board 72, and the electronic components in the power module are respectively disposed on the first short circuit board and the second short circuit board of the short circuit board 7. The length dimensions of the first short circuit board and the second short circuit board may be approximately the same or may not be the same. Generally, the length dimension of the first short circuit board is shorter than the length dimension of the second short circuit board. The first short circuit board is arranged in the lamp holder 3 at one end of the LED straight tube lamp, and the second short circuit board is arranged in the lamp holder 3 at the other opposite end of the LED straight tube lamp.
In other embodiments, the first short circuit board 71 may be an electronic component provided with a power module formed on one end of the long circuit board 6, that is, one end of the long circuit board 6, and thus, the one end of the long circuit board 6 forms the first short circuit board 71. Therefore, the first short circuit board 71 does not need to be additionally provided, and the power supply module is directly arranged on the long circuit board 6, thereby saving the cost.
As shown in fig. 7, in an embodiment, the power supply 5 is disposed at the lamp cap 3, the power supply 5 includes a power supply circuit board 51 and electronic components disposed on the power supply circuit board 51, the power supply circuit board 51 has a first end 504 and a second end 505 in the axial direction of the lamp tube 1, wherein the first end 504 of the power supply circuit board 51 is closer to the lamp cap 3, and among the electronic components, the electronic component disposed at the edge of the second end 505 is connected to the power supply circuit board 51 (the edge of the electronic component in the length direction of the power supply circuit board 51 refers to that the edge of the electronic component is closer to the outer side of the power supply circuit board 51 than other electronic components). In this embodiment, the electronic component disposed at the outermost edge of the second end 505 at least partially exceeds the boundary of the power circuit board 51 in the length direction of the power circuit board 51. Therefore, the electronic components of the power supply 5 do not need to be all disposed within the range defined by the power circuit board 51, and thus the length of the power circuit board 51 can be reduced while carrying the same number of electronic components. On the other hand, the electronic component disposed at the edge of the second end 505, which exceeds the boundary of the power circuit board 51 in the length direction, plays a role in limiting the bending and bulging of the corresponding region of the lamp panel 2, and avoids affecting the light output of the lamp bead on the lamp panel 2.
In the above embodiment, the electronic component disposed at the outermost edge of the second end 505 is a component occupying a larger space in the length direction of the power circuit board 51, such as a capacitor, an electrolytic capacitor, an inductor or a transformer.
As shown in fig. 7, in one embodiment, at least one electronic component is fixed on the power circuit board 51 through a pin and electrically connected to the power circuit board 51. The power circuit board 51 has a first end 504 and a second end 505 in the axial direction of the lamp tube 1, wherein the first end 504 of the power circuit board 51 is closer to the lamp cap 3, and of the electronic components, the electronic component disposed at the edge of the second end 505 is connected to the power circuit board 51 through the guide pin.
As shown in fig. 8, in an embodiment, the electronic component disposed at the outermost edge of the second end 505 is an electrolytic capacitor 503, the electrolytic capacitor includes a guide pin 5031 and a body 5032, the guide pin 5031 is connected to the power circuit board 51, and the body 5032 of the electrolytic capacitor 503 at least partially exceeds the boundary of the power circuit board 51 in the length direction. Therefore, at least a part of the electrolytic capacitor 503 is not within the range defined by the power circuit board 51, and when the same number of electronic components are carried, the length of the power circuit board 51 can be reduced, and the material cost of the power circuit board 51 can be reduced.
Further, the body portion 5032 of the electrolytic capacitor 503 is completely located outside the second end 505 of the power circuit board 51 in the length direction, that is, the body portion 5032 does not fall within the range defined by the power circuit board 51 at all. In other words, the projection of the body portion 5032 in the radial direction of the lamp 1 does not overlap with the power circuit board 51. Thus, the length of the power circuit board 51 can be further reduced, and the material cost of the power circuit board 51 can be reduced.
In some applications, there are size limitations on the electronic components. For example, in a T5 lamp tube, the tube diameter is about 16 mm. It is therefore desirable to ensure that the electronic components are sized to fit within the lamp envelope without compromising performance. The performance of the electrolytic capacitor is related to the capacity thereof, and the main factor determining the capacity is the volume of the electrolytic capacitor. After the electrolytic capacitor is arranged on the power circuit board, the size of the electrolytic capacitor is limited not only by the tube diameter of the lamp tube, but also by the power circuit board.
In one embodiment, the body portion 5032 of the electrolytic capacitor 503 is completely located outside the second end 505 of the power circuit board 51 in the length direction, i.e., the body portion 5032 does not fall within the range defined by the power circuit board 51. In other words, the projection of the body portion 5032 in the radial direction of the lamp 1 does not overlap with the power circuit board 51. Thus, the length of the power circuit board 51 can be further reduced, and the material cost of the power circuit board 51 can be reduced.
Further, the power circuit board 51 includes a power circuit layer 511, and the power circuit board 51 defines a first surface 501 and a second surface 502 opposite to each other, and the second surface 502 is located on a side of the power circuit board 51 having the power circuit layer 511. A part of the body 5032 of the electrolytic capacitor 503 in this embodiment is located on one side of the second face 502, and the other part is located on the other side of the second face 502. In other words, the projection of the second surface 502 in the axial direction of the lamp tube 1 at least partially coincides with the main body 5031 of the electrolytic capacitor 503. This has the advantage that the body 5032 of the electrolytic capacitor 503 can be placed in the lamp 1 without the limitation of the power circuit board 51 on the body 5032 in the radial direction of the lamp, and thus, the volume of the body 5032 can be increased after the limitation is removed, thereby increasing the capacitance of the electrolytic capacitor and improving the performance thereof.
In one embodiment, the body 5032 of the electrolytic capacitor 503 has a substantially cylindrical shape with a bottom radius A and an inner wall radius B of the lamp 1, and the ratio of the bottom radius A of the body 5032 of the electrolytic capacitor 503 to the inner wall radius B of the lamp 1 is 1: 1.1-1.6. Thus, the space in the lamp tube 1 can be fully utilized to increase the capacity of the electrolytic capacitor 503, thereby improving the performance thereof. On the other hand, the electrolytic capacitor 503 can limit the bending or bulging of the corresponding region of the lamp panel 2.
In the above embodiment, the axis of the body portion 5032 is parallel or substantially parallel to the axis of the lamp tube 1.
Take flexible formula circuit soft board as the lamp plate for example, the utility model discloses a process flow of power and lamp plate equipment, including following step:
a. providing a lamp tube, adhering the lamp panel on the inner circumferential surface of the lamp tube, and reserving free parts at two ends of the lamp panel;
b. inserting a power supply into the lamp tube, and enabling the first surface of the lamp panel to be opposite to the second surface of the power supply circuit board;
c. exposing the connecting part of the power circuit board outside the lamp tube, and simultaneously exposing one end of the free part outside the lamp tube;
d. aligning the connecting part of the power circuit board with one end of the free part, and welding;
e. after welding, inserting the part of the power circuit board exposed out of the lamp tube into the lamp tube through the free part;
f. the end part of the lamp tube is provided with a lamp cap.
The utility model discloses LED straight tube lamp is in the realization of each embodiment with as before. It should be noted that, in each embodiment, for the same LED straight tube lamp, the "bulb holder may be a plastic bulb holder", the "bulb holder may be an all-metal bulb holder, an insulator is additionally disposed at the lower portion of the hollow conductive pin, a hole for dissipating heat is disposed on the bulb holder, a diffusion film is disposed in the bulb, a power supply circuit board is disposed in the bulb, one end of the power supply circuit board closer to the bulb holder is connected to one end of the bulb board, the length of the bulb board in the extended state is greater than that of the bulb, the first surface of the bulb board is disposed opposite to the second surface of the power supply circuit board, the electronic component on the power supply circuit layer includes a capacitor, a transformer, an inductor or a resistor, the first surface of the power supply circuit board is disposed opposite to the first surface of the power supply circuit board, the bulb board may be any one of a strip-shaped aluminum, The lamp panel which is not fixed on the inner circumferential surface of the lamp tube forms a free part, the length of the free part at one end of the flexible circuit board is larger than that of the connecting part of the power supply circuit board, the length of the free part at one end of the flexible circuit board is smaller than that of the power supply circuit board, the power supply only has one power supply circuit board, the lamp cap comprises a shading part, the shading part is arranged on the lamp tube, the row pins are arranged on the power supply circuit board, the lamp panel and the power supply adopt a circuit board assembly carrying a power supply module, the circuit board assembly is provided with a long circuit board and a short circuit board, the short circuit board is divided into a first short circuit board and a second short circuit board, the first short circuit board is formed at one end of the long circuit board, and the power supply circuit board is provided with, the first end of the power circuit board is closer to the lamp cap, the electronic element arranged at the outermost edge of the second end at least partially exceeds the boundary of the power circuit board in the length direction, the electronic element arranged at the outermost edge of the second end is a capacitor, an electrolytic capacitor, an inductor or a transformer, and the electronic element arranged on the power circuit board is provided with a first end and a second end in the axial direction of the lamp tube, wherein the first end of the power circuit board is closer to the lamp cap, the electronic element arranged at the outermost edge of the second end is an electrolytic capacitor, the electrolytic capacitor comprises a guide pin and a main body part, and the main body part of the electrolytic capacitor is completely positioned outside the second end of the power circuit board in the length direction The feature that "the power circuit board includes a power circuit layer, and the power circuit board defines first and second opposite faces, the second face being located on the side of the power circuit board having the power circuit layer, a part of the main body portion of the electrolytic capacitor being located on the side of the second face, and the other part being located on the other side of the second face" may be applied singly or integrally in practice, so that only one feature is implemented or several features are implemented at the same time.
For example, in the base design, the base may be a plastic base or an all-metal base. The lower part of the hollow conductive needle is additionally provided with an insulator, and the sizes of the lamp caps can be the same or different.
For example, when the connection of lamp plate and power supply circuit board was designed, can set up the first face of lamp plate and power supply circuit board's second face relatively, also can set up power supply circuit board's first face relatively with power supply circuit board's first face.
For example, when the lamp panel is selected, the lamp panel may be any one of a strip-shaped aluminum substrate, an FR4 board, a flexible circuit board, or a flexible substrate.
For example, in the design of the lamp panel and the power supply, the power supply may be a power supply circuit board carrying a power supply module, and the lamp panel and the power supply may be replaced by a circuit board assembly carrying the power supply module.
That is, the above features of the present invention may be arbitrarily arranged and combined and used for improvement of the LED straight tube lamp, and the above embodiments are described only by way of example. The invention is not so limited and many variations are possible without departing from the spirit of the invention and the scope defined by the appended claims.
Claims (14)
1. An LED straight lamp, comprising:
the lamp tube is internally provided with a power supply;
the lamp panel is arranged in the lamp tube, and a plurality of light sources are arranged on the lamp panel; and
two lamp caps respectively arranged at two ends of the lamp tube;
the power has power supply circuit board, power supply circuit board is in the axial of fluorescent tube has both ends, and wherein one end is closer to rather than matching the lamp holder, power supply circuit board is closer to rather than matching the one end of lamp holder with the one end electricity of lamp plate is connected.
2. The LED straight lamp according to claim 1, wherein: the lamp plate has the first face that sets up the light source and keeps away from the second face of light source, power supply circuit board includes power supply circuit layer, power supply circuit board has first face and second face, power supply circuit board's second face is located power supply circuit board has one side on power supply circuit layer, the lamp plate first face with power supply circuit board the second face sets up relatively.
3. The LED straight lamp according to claim 2, wherein: the power supply circuit board is characterized in that an electronic element is arranged on the power supply circuit layer and arranged between the first surface of the lamp panel and the second surface of the power supply circuit board.
4. A LED straight tube lamp according to claim 3, wherein: the electronic component comprises a capacitor, a transformer, an inductor or a resistor.
5. The LED straight tube lamp according to any one of claims 1 to 4, wherein: the number of the power circuit boards in the lamp tube is one.
6. The LED straight lamp according to claim 1, wherein: the lamp panel is a flexible circuit soft board, one part of the flexible circuit soft board is fixed on the inner circumferential surface of the lamp tube, two ends of the flexible circuit soft board are not fixed on the inner circumferential surface of the lamp tube to form a free part, the power supply circuit board of the power supply is provided with a connecting part, and the free part is connected with the connecting part of the power supply circuit board.
7. The LED straight tube lamp according to claim 6, wherein: the length of the free part at one end of the flexible circuit soft board along the axial direction of the lamp tube is greater than that of the connecting part of the power circuit board.
8. The LED straight lamp according to claim 6 or 7, wherein: the length of the free part at one end of the flexible circuit soft board along the axial direction of the lamp tube is less than that of the power supply circuit board.
9. The LED straight lamp according to claim 1, wherein: the lamp plate has the first face that sets up the light source and keeps away from the second face of light source, power supply circuit board includes power supply circuit layer, power supply circuit board has first face and second face, power supply circuit board's second face is located power supply circuit board has one side on power supply circuit layer, the lamp plate first face with power supply circuit board first face sets up relatively.
10. The LED straight lamp according to claim 9, wherein: and a circuit protection layer is arranged between the lamp panel and the power circuit board.
11. An LED straight lamp, comprising:
a lamp tube;
two lamp caps respectively arranged at two ends of the lamp tube;
a circuit board assembly having a long circuit board and a short circuit board electrically connected to each other, the short circuit board having a power module thereon;
the long circuit board is a flexible circuit soft board or a flexible substrate used as a lamp panel, and is provided with a plurality of light sources and electrically connected with the power supply module;
the short circuit board is a power circuit board, the power circuit board is arranged at two ends of the lamp tube in the axial direction, one end of the power circuit board is closer to the lamp holder matched with the power circuit board, and one end of the power circuit board, which is closer to the lamp holder matched with the power circuit board, is connected with one end of the lamp panel.
12. An LED straight tube lamp according to claim 11, wherein: the short circuit board is provided with a first short circuit board and a second short circuit board, and electronic components in the power supply module are respectively arranged on the first short circuit board and the second short circuit board.
13. An LED straight tube lamp according to claim 12, wherein: the length dimension of the first short circuit board along the axial direction of the lamp tube is shorter than that of the second short circuit board.
14. The LED straight lamp according to claim 12 or 13, wherein: one end of the long circuit board is provided with the electronic element of the power module to form the first short circuit board.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921641480.4U CN211010842U (en) | 2018-03-09 | 2019-03-01 | L ED straight tube lamp |
| CN201920551205.7U CN210266782U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
| CN201920550385.7U CN210107099U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195730 | 2018-03-09 | ||
| CN201810195730X | 2018-03-09 | ||
| CN201810398911 | 2018-04-28 | ||
| CN2018103989112 | 2018-04-28 | ||
| CN2018115539107 | 2018-12-18 | ||
| CN201811553910 | 2018-12-18 |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921641480.4U Division CN211010842U (en) | 2018-03-09 | 2019-03-01 | L ED straight tube lamp |
| CN201920550385.7U Division CN210107099U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
| CN201920551205.7U Division CN210266782U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209856806U true CN209856806U (en) | 2019-12-27 |
Family
ID=68932626
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920551205.7U Active CN210266782U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
| CN201920263244.7U Active CN209856806U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
| CN201920550385.7U Active CN210107099U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
| CN201921641480.4U Active CN211010842U (en) | 2018-03-09 | 2019-03-01 | L ED straight tube lamp |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920551205.7U Active CN210266782U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920550385.7U Active CN210107099U (en) | 2018-03-09 | 2019-03-01 | LED straight lamp |
| CN201921641480.4U Active CN211010842U (en) | 2018-03-09 | 2019-03-01 | L ED straight tube lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN210266782U (en) |
-
2019
- 2019-03-01 CN CN201920551205.7U patent/CN210266782U/en active Active
- 2019-03-01 CN CN201920263244.7U patent/CN209856806U/en active Active
- 2019-03-01 CN CN201920550385.7U patent/CN210107099U/en active Active
- 2019-03-01 CN CN201921641480.4U patent/CN211010842U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN210266782U (en) | 2020-04-07 |
| CN210107099U (en) | 2020-02-21 |
| CN211010842U (en) | 2020-07-14 |
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