JP3225620U - LED straight tube lamp - Google Patents

Abstract

An LED straight tube lamp with improved heat dissipation from a power supply component is provided. The LED straight tube lamp is formed with a lamp tube, an LED lighting strip disposed in the lamp tube, and having at least one LED light source attached to a surface thereof, and a plurality of openings for heat dissipation. An end cap 3 mounted over one end of the lamp tube; and a power source disposed in the end cap and electrically connected to the LED light source through an LED illumination strip, between the end cap and the lamp tube. Is provided with a hot melt adhesive 6, and the end cap is joined and bonded to the lamp tube via the hot melt adhesive. The end cap includes an electric insulating tube and a heat conducting member 303 fixedly arranged on the outer peripheral surface of the electric insulating tube. Then, a housing space for housing the hot melt adhesive is formed. [Selection diagram] FIG.

Description

  The present disclosure relates to lighting fixtures, and more particularly to LED straight tube lamps and their components, including light sources, electronics, and end caps.

  The technology of LED lighting is developing rapidly and is replacing traditional incandescent and fluorescent lighting. In contrast to fluorescent lamps that need to be filled with inert gas and mercury, LED straight tube lamps do not contain mercury. Thus, among the various lighting systems available at home and at work, conventional lighting, such as compact bulb-type fluorescent lamps (CFLs) and straight-tube fluorescent lamps, has become an option, but LED straight-tube lamps have become more popular. Not surprisingly, it is becoming a highly desired option. Advantages of LED straight tube lamps include durability and longer life than conventional lighting, and much lower energy consumption than conventional lighting. Thus, taking all factors into account, LED straight tube lamps would generally be considered a cost-effective option.

  A general LED straight tube lamp is provided with a tube, a circuit board disposed in the tube to which a light source is attached, and power supplies at both ends of the tube, and power from the power supply is supplied to the light source through the circuit board. And an end cap for feeding. However, existing LED straight tube lamps have some disadvantages.

  First, since a general circuit board is hard, even if the pipe is partially ruptured or broken, the entire straight pipe shape is maintained. However, this may give the user a false impression that the LED straight tube lamp is still usable, and may cause an electric shock to the user when handling or installing the LED straight tube lamp.

  Second, the rigid circuit board is typically electrically connected to the end cap by wire bonding, where the wires are susceptible to damage and are broken by movement during production, transport, and use of LED straight tube lamps And as a result, the LED straight tube lamp may become unusable.

  Third, the tube and end cap are often secured using hot melt or silicone adhesives, but it is difficult to prevent the formation of excess (extruded) adhesive residue. It is. This not only aesthetically impairs the appearance, but can also block light. In addition, the removal of excess adhesive formations requires a large amount of human resources, creating additional bottlenecks in production and inefficiencies. In addition, if the heat dissipation of the power supply components inside the end cap is insufficient, a high temperature state may occur. Therefore, the life of the hot melt adhesive is shortened, and the adhesion between the tube and the end cap is peeled off. This may reduce the reliability of the LED straight tube lamp.

  Fourth, a normal tubular body has a long tubular shape with end caps covered at both ends using an adhesive, and the diameter of each end cap is larger than the diameter of the tubular body. At this point, the packing box for the tubular body is also usually cylindrical, and only comes into contact with the end cap, so that only the end cap is supported, and the connecting portion connecting the end cap and the tubular body is easily broken. LED straight tube lamps disclosed in U.S. Patent Application No. US2014226320 and Chinese straight line application disclosed in Chinese Patent Application CN102518972 are examples. To address this problem, U.S. Patent Application US20110010367 discloses an end cap that is sealed and inserted into a glass tube. However, this type of tube is internally stressed at its end and can be easily broken if subjected to external forces at that end, leading to defective products and quality problems.

  Fifth, a granular appearance is also often found in the aforementioned conventional LED straight tube lamps. The LED chips spatially arranged on the circuit board inside the tube are regarded as spot light sources, and the emitted light of these LED chips generally has the illuminance of the LED straight tube lamp without proper optical operation. Does not contribute to the uniformity of As a result, the entire straight tube lamp has a grainy feeling, that is, a non-uniform lighting effect, to the viewer of the LED straight tube lamp, which adversely affects visual comfort and even narrows the light distribution angle. As a result, the quality and aesthetic requirements of the average consumer are not met. To address this problem, Chinese patent application CN2013027271.6 discloses avoiding the grainy appearance of the diffusion tube located in the glass tube.

  However, since the arrangement of the diffusion tube causes an interface in the optical path, the probability of occurrence of total reflection increases, and the light output efficiency decreases. Furthermore, light output efficiency is reduced due to absorption of optical rotation in the diffusion tube.

  Accordingly, the present disclosure and embodiments thereof are provided herein.

  The present disclosure may actually include one or more inventions, including those for which utility model registration has been requested and those for which utility model registration has not yet been made. In order to avoid confusion by unnecessarily distinguishing these possible ideas at the stage of preparing the present specification, in the present disclosure, these plurality of possible ideas are collectively referred to as “(book) Invented "

  In this section, various embodiments are outlined and described in terms of the present invention. The term "the invention" is used to indicate an embodiment according to the present disclosure regardless of whether a utility model registration is requested, and does not necessarily exhaustively illustrate all possible embodiments, Rather, it is merely an overview of certain embodiments. The particular embodiments described below as various aspects of the invention may be combined in various ways as forming an LED straight tube lamp or a part thereof.

  According to the present invention, a novel LED straight tube lamp and some aspects thereof are provided.

  According to the present invention, there is provided an LED straight tube lamp including a tube and a set of end caps fixed to both ends of the tube. Each end cap may have an electrically insulating tube and a heat conducting member. This heat conductive member is arranged and fixed on the outer peripheral surface of the electric insulating tube, and is adhered to the outer surface of the tube using an adhesive.

  According to the present invention, there is further provided an LED straight tube lamp including a tube and two end caps of different sizes fixed to both ends of the tube. In some embodiments, the size of one end cap may be 30% to 80% of the size of the other end cap.

  The disclosed tubing may include one body and two rear ends located at opposite ends of the body, respectively. Here, each rear end portion has an outer diameter smaller than that of the main body so that two end caps having the same outer diameter as the main body can be covered with the respective end caps. In some embodiments, the difference between the outer diameter of the trailing end and the outer diameter of the body is from about 1 mm to about 10 mm. Most preferably, the difference between the outer diameter of the rear end and the outer diameter of the body may be from about 2 mm to about 7 mm.

  The tube may further include a bridging portion connecting the main body and the rear end. The bridging portion may be arcuate at both ends, on the main body side, the outer surface is pulled and the inner surface is in a compressed state, while on the rear end side, the outer surface is in a compressed state, and The inner surface is pulled. The normal vector of the arc-shaped surface at the end of the transition portion on the main body portion side points in a direction outward from the pipe, and the normal vector of the arc-shaped surface at the rear end portion of the transition portion is the direction inward of the pipe. Point to.

  The radius of curvature R1 of the arcuate surface at the end of the transition portion on the body portion side may be smaller than the radius of curvature R2 of the arcuate surface at the end of the transition portion on the rear end side. For example, the ratio of R1 to R2 may range from about 1: 1.5 to about 1:10.

  Further, in some embodiments, there is no step between the body of the tube and the end cap.

  The angle of the arc of the arcuate surface at the end of the transition portion on the body portion side and the angle of the arc of the arcuate surface at the end of the transition portion on the rear end side may be greater than 90 degrees. In some embodiments, the outer surface of the rear end is continuous and parallel to the outer surface of the body.

  In some embodiments, the length of the transition is from about 1 mm to about 4 mm.

  The tube may be made of glass or resin.

  The electric insulating tube may have a first tubular portion connected along the longitudinal direction of the tubular body and a second tubular portion having an outer diameter smaller than the first tubular portion. In some embodiments, the difference in outer diameter between the first tubular portion and the second tubular portion is from about 0.15 mm to about 0.30 mm.

  The second tubular portion may be covered with a heat conducting member, whereby the outer surface of the heat conducting member and the outer peripheral surface of the first tubular portion may be substantially flush.

  The tube may be partially covered with the second tubular portion. Further, the tube may be fixed to the heat conducting member using an adhesive such as a hot melt adhesive.

  In certain embodiments, one or more cutouts are provided at an end of the second tubular portion remote from the first tubular portion and spatially disposed along a circumferential direction of the second tubular portion.

  The ratio of the length of the heat conducting member along the axis or length of the end cap to the axial length of the electrically insulating tube may be from about 1: 2.5 to about 1: 5.

  In some embodiments, the length of the portion of the tube that is inserted into the end cap occupies about one-third to two-thirds of the axial or longitudinal length of the heat transfer member.

  In some embodiments, the heat conducting member may be a metal torus.

  In some embodiments, the heat conducting member may be cylindrical.

  In some embodiments, the electrically insulating tube may be a resin tube.

  The present invention provides a method for bonding an end cap to a tube to form a straight tube lamp. The method includes the following steps. Applying a hot-melt adhesive to the inner surface of the end cap, covering the end of the tube with an end cap, and expanding the hot-melt adhesive by heating the hot-melt adhesive with an external heating device. Flowing into the space between the inner surface of the cap and the outer surface of the end of the tube.

  According to the present invention, there is provided an LED straight tube lamp including a tube and a set of end caps fixed to both ends of the tube. Each end cap has an electrically insulating tube and a heat conducting member. This heat conduction member is arranged and fixed on the outer peripheral surface of the electric insulating tube. The electrical insulating tube has a first tubular portion and a second tubular portion connected along the axial direction or the length direction of the electrical insulating tube. Further, the inner surface of the second tubular portion, the inner surface of the heat conducting member, the outer surface of the rear end portion, and the outer surface of the transition portion may together form one accommodation space.

  A hot melt adhesive may be placed in the storage space. In some embodiments, a portion of the storage space may include a hot melt adhesive. In some embodiments, a portion of the hot melt adhesive is placed in a space between the inner surface of the second tubular portion and the outer surface of the rear end.

  The hot melt adhesive may be filled in the receiving space from a position where the first virtual plane perpendicular to the axial direction of the tube passes through the heat conducting member, the hot melt adhesive, and the outer surface of the tube.

  The hot melt adhesive may be filled in the receiving space from a location where a second virtual plane perpendicular to the axial direction of the tube passes through the heat conducting member, the second tubular portion, the hot melt adhesive, and the rear end. .

  The hot melt adhesive may be filled into the receiving space from a location where a first virtual plane perpendicular to the axial direction of the tube passes through the heat conducting member, the hot melt adhesive, and the outer surface of the tube, and The hot melt adhesive may be filled in the receiving space from a location where a second virtual plane perpendicular to the axial direction of the tube passes through the heat conducting member, the second tubular portion, the hot melt adhesive, and the rear end. .

  Hot melt adhesives may include one or more of the following materials. Phenolic resin 2127 #, shellac, rosin, calcite powder, zinc oxide, and ethanol. Also, the volume of the hot melt adhesive may expand to about 1.3 times its original size when heated from room temperature (for example, about 15 to 30 degrees Celsius) to 200 to 250 degrees Celsius.

  According to the present invention, there is provided an LED straight tube lamp including one tube and one end cap fixed to one end of the tube. The end cap includes an electrically insulating tube that is placed over the end of the tube. Further, one magnetic metal member is disposed on the inner peripheral surface of the electric insulating tube such that at least a part thereof is between the inner peripheral surface of the electric insulating tube and the tubular body. In some embodiments, the outer diameter of the magnetic metal member is larger than the outer diameter of the rear end of the tube.

  The magnetic metal member and the end of the tube may be joined by bonding using a material such as a hot melt adhesive.

  Alternatively, the magnetic metal member may be entirely placed in an electrically insulating tube, and the entire inner surface of the magnetic metal member may be covered with a hot melt adhesive.

  The electrical insulating tube may further be provided with a support that stands inward on its inner surface, and the magnetic metal member may contact the upper end of the support along the axial direction. In some embodiments, the thickness of the support, measured along the radial direction of the electrical insulation tube, is between 1 mm and 2 mm.

  The electrically insulating tube may further be provided with a protrusion standing inward on the inner surface thereof, and the magnetic metal member may contact the side end of the protrusion along the axial direction. Further, the outer surface of the magnetic metal member and the inner surface of the electric insulating tube may be separated by a gap. The thickness of the protruding portion measured along the radial direction of the electrical insulating tube may be smaller than the thickness of the support portion measured along the radial direction of the electrical insulating tube. In some embodiments, the thickness of the protrusion is between about 0.2 mm and 1 mm.

  The protrusions may be arranged in a circular arrangement along the circumferential direction of the electrical insulating tube. Alternatively, the protrusion may be a plurality of bumps disposed on the inner surface of the electrically insulating tube. These bumps may be arranged at equal intervals along the inner peripheral surface of the electric insulating tube. These bumps may be arranged at different intervals along the inner peripheral surface of the electrically insulating tube.

  According to the present invention, there is provided an end cap used for an LED straight tube lamp. The end cap includes an electric insulating tube that covers the end of the tube of the LED straight tube lamp, a magnetic metal member fixed to the inner surface of the electric insulating tube, and a hot melt adhesive that covers the inner surface of the magnetic metal member. .

  The hot melt adhesive may completely cover the inside surface of the magnetic metal member.

  The magnetic metal member may be annular.

  The magnetic metal member may have an opening on the surface. In some embodiments, the openings occupy about 10% to about 50% of the surface area of the magnetic metal member. In some embodiments, the plurality of openings are circumferentially arranged at equal or different intervals.

  The magnetic metal member may have a concave portion or a raised portion on a surface facing the electric insulating tube. For example, in one embodiment, the ridge rises from the inner surface of the magnetic metal member and the recess sinks below the inner surface of the magnetic metal member.

  The magnetic metal member may be tubular and may be arranged coaxially with the electrically insulating tube.

  The magnetic metal member may have an annular shape or a non-annular shape such as an elliptical shape.

  The hot melt adhesive may include a powder having a high magnetic permeability uniformly distributed at a predetermined ratio. The powder is charged by receiving electric power from an external heating device, and heats and expands the adhesive to flow. The adhesive eventually cures after cooling. As a result, the purpose of fixing the end cap and the tube with the hot melt adhesive is achieved.

  Thus, the present invention provides a hot melt adhesive used for an LED straight tube lamp. The hot melt adhesive may include one or more of the following materials. Phenol resin 2127 #, shellac, rosin, calcite powder, zinc oxide, ethanol, and highly permeable powder. Here, the volume ratio between the highly permeable powder and the calcite powder is about 1: 3 to 1: 1. Also, the volume of the hot melt adhesive may expand to about 1.3 times its original size when heated from room temperature (for example, about 15 to 30 degrees Celsius) to 200 to 250 degrees Celsius.

In some embodiments, the permeability of the powder is from about 10 ² to about 10 ^6.

  In some embodiments, the material of the powder is selected from the group consisting of iron, nickel, cobalt, and alloys thereof.

  In some embodiments, the weight percentage of the powder relative to the hot melt adhesive is from about 10% to about 50%.

  In some embodiments, the powder has an average particle size of 1 to 30 micrometers.

  When the hot melt adhesive is in an electromagnetic field, the powder of the hot melt adhesive may form a closed circuit.

  When the hot melt adhesive is in an electromagnetic field, the particles of the hot melt adhesive powder may be charged.

  For example, the hot melt adhesive may flow at a temperature of about 200 to about 250 degrees Celsius.

  For example, the hot melt adhesive may cure after cooling from about 200 to about 250 degrees Celsius.

  Hot melt adhesives heated to about 200 to about 250 degrees Celsius may cure immediately.

  The external heating device may be an induction coil connected to a power supply to be powered and generate an electromagnetic field. An electric current is generated in the magnetic metal member that has entered the electromagnetic field, whereby the magnetic metal member is heated and the heat is transmitted to the hot melt adhesive.

  The power supply of the external heating device may include a power amplifier for amplifying the AC power to about 1-2 times its original intensity.

  In some embodiments, the induction coil may be made of a metal wire having a thickness of about 5 mm to about 6 mm, formed into a circular coil having a diameter of about 30 mm to about 35 mm.

  In some embodiments, the material of the induction coil is copper.

  The magnetic metal member is typically heated to about 250 to about 300 degrees Celsius, and in some embodiments, to about 200 to about 250 degrees Celsius.

  In the induction coil, the hot melt adhesive is heated and expands and flows as the end cap moves or enters the induction coil, and then the hot melt adhesive cools and hardens when the end cap moves away from the induction coil. It may be fixed at such a position. Alternatively, the end cap is heated by the induction coil moving around the end cap, causing the hot melt adhesive to expand and flow, and then, when the induction coil moves away from the end cap, the hot melt adhesive cools and cures. It may be fixed in a position where it does.

  The induction coil may be fixed in a position such that as the end cap moves or enters the induction coil, the hot melt adhesive is heated, expands and flows, and then cures immediately. Alternatively, the end cap may be fixed in a position such that the induction coil surrounds the end cap and the hot melt adhesive is heated and hardened immediately.

  The end cap and the end of the tube are secured using a hot melt adhesive, resulting in a torque test of about 1.5 to about 5 Newton meters (Nt-m) and / or about 5 to about 10 Newton meters (Nt-m). Nt-m).

  An opening for exhaust heat may be formed in the end cap. In some embodiments, the opening is arcuate. For example, the opening may be in the form of three arcs of different sizes. In some embodiments, the opening is in the form of three arcs of varying size.

  The tube may be provided with a diffusion film, and the light emitted from the light source of the LED straight tube lamp is transmitted through the diffusion film and the tube surface in this order.

  The diffusion membrane may take the form of a coating layer that covers the inside or outside surface of the tube. The diffusion film may take the form of a coating layer that covers the surface of the light source within the tube. In some embodiments, the thickness of the diffusion film is from about 20 μm to about 30 μm. The diffusion film may take the form of a sheet that covers the light source in a non-contact manner.

  In some embodiments, the light transmission of the diffusion film is greater than about 85%. In some embodiments, the diffusion film has a thickness from about 200 μm to about 300 μm and a light transmission from about 92% to about 94%.

  The tube may include a reflective film disposed on a part of the inner peripheral surface of the tube. In some embodiments, the ratio of the length of the reflective film disposed on the inner surface of the tube and extending along the circumference of the tube to the circumference of the tube is about 0.3 to 0.5. 5

  According to the present invention, the LED includes a tube, an end cap disposed at one end of the tube, a power supply provided in the end cap, and an LED lighting strip disposed in the tube and to which a light source is attached. The lighting strip is provided with an LED straight tube lamp having a flexible circuit sheet for electrically connecting a light source and a power source.

  The flexible circuit sheet may be a single conductive wiring layer. The light source is mounted on the conductive wiring layer, and the light source and the power supply are electrically connected via the conductive wiring layer.

  The flexible circuit sheet may further include one dielectric layer laminated on the conductive wiring layer. The dielectric layer is preferably laminated on the surface of the conductive wiring layer opposite to the surface on which the light source is located. A dielectric layer may be mounted on the inner surface of the tube. In some embodiments, the ratio of the circumferential length of the flexible circuit sheet to the circumferential length of the inner surface of the tube is about 0.2 to 0.5.

  The flexible circuit sheet may further include one circuit protection layer.

  The flexible circuit sheet and the power supply may be connected by wire bonding.

  The flexible circuit sheet may be disposed on the reflective film.

  The flexible circuit sheet may be disposed in contact with one side of the reflective film.

  The flexible circuit sheet may be arranged so that the reflective films arranged in contact with both sides of the flexible circuit sheet extend along the circumferential direction of the tubular body.

  The tube may have an adhesive film on its inner or outer surface that insulates the inside and the outside when the tube is broken.

  The flexible circuit sheet may have both ends passing through the crossover portion to reach the power supply and be electrically connected to the power supply.

  The flexible circuit sheet has a set of conductive wiring layers and a set of dielectric layers that are alternately stacked, and the light source is disposed on the outermost conductive wiring layer, and power is supplied through the conductive wiring layers. Receive supply.

  The flexible circuit sheet may be disposed so that an end thereof is separated from an inner surface of the tubular body in a posture along the axial direction of the tubular body. The flexible circuit sheet has free extending ends each having a length exceeding both ends of the tubular body, and these free extending ends are rounded so as to be properly accommodated in the tubular body, It may be rolled or deformed.

  The power supply may be a single integrated unit (e.g., all the components of the power supply contained in one body) and placed in an end cap at one end of the tube. Alternatively, the power supply may take the form of two separate power supplies (eg, each part of the power supply is divided into two parts), each of which is divided into two end caps.

  The end cap may include a socket for connection to a power source.

  The power supply may have a metal pin at one end, and the end cap may include a hollow conductive pin for receiving the metal pin of the power supply.

  The flexible circuit sheet may be connected to a power source by a solder joint.

  The LED lighting strip may be connected to a power source utilizing a circuit board assembly including a long circuit sheet and a short circuit board. The long circuit sheet and the short circuit board are bonded so that the short circuit board is close to the side end of the long circuit sheet. The short circuit board may include a power supply module to form a power supply. The short circuit board is harder than the long circuit sheet, and can support the power supply module. The long circuit sheet may be a flexible circuit sheet of an LED lighting strip.

  The length of the short circuit board may be generally about 15 mm to about 40 mm, and more preferably 19 mm to 36 mm. On the other hand, a typical length of the long circuit sheet may be about 800 mm to about 2800 mm, and more preferably, 1200 mm to 2400 mm. In some embodiments, the ratio of the length of the short circuit board to the length of the long circuit sheet ranges from about 1:20 to about 1: 200.

  The short circuit board is a rigid circuit board that supports the power supply module.

  The power supply module and the long circuit sheet may be arranged on the same surface of the short circuit board so that the power module is directly connected to the long circuit sheet. Alternatively, the power supply module and the long circuit sheet are respectively connected to different surfaces of the short circuit board so that the power module is directly connected to the short circuit board and further connected to the wiring layer of the long circuit sheet. It may be arranged.

  The power supply module may be vertically connected to an end of the short circuit board.

  According to the present invention, there is provided an LED straight tube lamp including a light source having a lead frame in which a recess in which an LED chip is disposed is formed. The lead frame further includes a plurality of first sidewalls and a plurality of second sidewalls, wherein the first sidewall is lower in height than the second sidewall.

  The first side walls may each have an inner side surface that is a slope facing outward of the recess. Further, the slope may be flat or curved, and the angle between the bottom surface of the recess and the inner surface may typically range from about 105 degrees to about 165 degrees. In some more preferred embodiments, it may range from about 120 degrees to about 150 degrees.

  Alternatively, the slope may be a warped surface.

  In some embodiments, an LED straight tube lamp includes an LED light source and a tube housing the LED light source. The LED light source includes a lead frame having a concave portion, and an LED chip disposed in the concave portion. The lead frame has a plurality of first side walls arranged in the length direction of the tube and a plurality of second side walls arranged in the width direction of the tube. The first side wall is lower in height than the second side wall. In some embodiments, an LED straight tube lamp may include an LED light source and a tube housing the LED light source. The LED light source includes a lead frame having a concave portion, and an LED chip disposed in the concave portion. The lead frame has a plurality of first side walls extending along the width direction of the tube, and a plurality of second side walls extending along the length direction of the tube. The first side wall is lower in height than the second side wall.

  A plurality of LED light sources may be provided, and in some embodiments, the plurality of LED light sources are arranged in only one row or a plurality of rows extending in the length direction of the tube.

  Furthermore, in the one row of the LED light sources, all the second side walls may be arranged on the same straight line parallel to the length direction of the tube. Alternatively, in the two rows of the outermost LED light sources in the width direction of the tubular body, in each row, even if all the second side walls are arranged on two straight lines parallel to the longitudinal direction of the tubular body. Good.

  Compared with the conventional LED tube and the manufacturing method thereof, the LED tube provided in the present disclosure has the following advantages.

  The end cap may include a heat conducting member to accomplish heating and curing of the hot melt adhesive used to connect to the tube, thereby reducing sticking and achieving higher efficiency.

  The end cap may include a magnetic metal member for achieving heating and hardening of the hot melt adhesive used for connection with the tube using electromagnetic induction, thereby reducing sticking. , Achieve higher efficiency.

  The size may vary between the end caps, thereby increasing design and production flexibility.

  The end cap may include a socket for connection to a power source, which simplifies assembly and improves production efficiency.

  The end cap may be provided with a hollow conductive pin for connecting to a power supply, which increases design and production flexibility.

  The end cap may have an opening in the surface to dissipate heat from the power source and provide an aesthetic appearance.

  The tube may be formed at one or both ends with a rear end smaller in diameter than the body such that the outer surface of the end cap and the outer surface of the body are substantially flush. . Thereby, the packing box for the LED straight tube lamp can be in contact with both the tube body and the end cap, so that the force applied to the entire LED straight tube lamp becomes uniform, and the LED straight tube lamp is transported. Is prevented from being damaged.

  The tube may have a crossover portion connecting the main body and the rear end, and the end cap may be fixed to the tube at the crossover portion. By providing a height difference between the rear end portion and the main body portion by the crossover portion, the adhesive applied to the rear end portion is prevented from protruding. As a result, human resources for removing the protruding adhesive are reduced, and productivity is improved.

  The tube may include a diffusion layer that diffuses outgoing light from the light source at the time of transmission so that the light source functions as a surface light source and the luminance of the entire tube is finally uniform by the light diffusion effect. Further, by disposing the diffusion layer, the visual effect perceived by the user is reduced, and the visual comfort is improved. The thickness of the diffusion layer may be as thin as possible to ensure maximum light output efficiency.

  The tube may be provided with a reflective film for reflecting the light emitted from the light source, so that the light can be seen from various other angles, and the divergence angle of the light so as to illuminate the place where the reflective film is not arranged. Adjustment is achieved. As a result, the LED straight tube lamp can obtain the same light distribution with smaller power, and realize energy saving.

  The illumination angle may be widened and the heat dissipation efficiency may be improved by attaching the light source to the inner surface of the tube.

  In order to ensure safety when handling the tubular body, the inside and outside of the damaged tubular body may be insulated by attaching an adhesive film to the inner surface or the outer surface of the tubular body.

  Since the broken tube no longer retains the straight shape, the user is warned not to use the tube, and the use of a flexible circuit sheet as the LED lighting strip avoids electric shock.

  The flexible circuit sheet is provided with freely stretchable portions at both ends along the axial direction of the tubular body, and this portion is appropriately rolled, rolled, or deformed, and housed in the tubular body. This makes the production and assembly of the LED tube easier.

  The connection between the flexible circuit sheet and the power supply in the end cap may be secured by directly soldering the flexible circuit sheet to the output terminals of the power supply.

  The connection between the flexible circuit sheet and the printed circuit board supporting the power supply module of the power supply may be strengthened by using a circuit board assembly so that it is not easily damaged.

  The flexibility in designing and manufacturing LED straight tube lamps is increased by utilizing different types of power supply modules for the power supply.

  The light source may include a lead frame including a concave portion, and a plurality of first side walls and a plurality of second side walls surrounding the concave portion, in which the LED chip is disposed. The first side wall extends along the width direction of the tube, and the second side wall extends along the length direction of the tube. The second side wall hides the LED chip from the user viewing the tube from the side, thereby reducing the graininess and improving visual comfort. In addition, the height of the first side wall is lower than the height of the second side wall, and the light emitted from the LED chip passes across the first side wall and illuminates. This achieves energy savings while increasing the amount of light.

  In each row of the LED light sources arranged in the width direction of the tube, all the second side walls may be arranged on the same straight line parallel to the length direction of the tube. This reduces illumination loss along the length of the tube, and the aligned second side walls block light from traveling in the lateral direction and entering the user's eyes.

  An improved hot melt adhesive and a method for heating the hot melt adhesive for easier and more reliable connection between the tube and the end cap so that the high temperature generated in the end cap does not impair the reliability of the hot melt adhesive. Elaborate configuration may be made. Additionally, hot melt adhesives may be used to insulate the tube and end caps to prevent any possible electric shock if the tube is broken.

  Cross-reference to related application

  This application is related to Chinese Patent Application CN2014105066.60.9 filed on Sep. 28, 2014, Chinese Patent Application CN201410509899.8 filed on Sep. 28, 2014, and Chinese Patent Application CN2014102355.65.6 filed on Nov. 6, 2014. , Chinese Patent Application CN20141073445.5, filed December 5, 2014; Chinese Patent Application CN20151007525.7, filed February 12, 2015; Chinese Patent Application CN201510136796.8, 2015 filed March 27, 2015. Chinese patent application CN201310372375.5 filed on June 26, 2015; Chinese patent application CN201510259151.3 filed on May 19, 2015; Chinese patent application CN20151033382 filed on June 17, 2015 .6, Chinese patent application CN201310373492.3 filed on June 26, 2015; Chinese patent application CN201310482944.1 filed on August 7, 2015; Chinese patent application CN2015104873475.5 filed on August 8, 2015. , And Chinese Patent Application CN2013105555543.4 filed Sep. 2, 2015, the disclosures of which are hereby incorporated by reference in their entirety.

FIG. 1 is a perspective view schematically showing an LED straight tube lamp according to an embodiment of the present invention. FIG. 1A is a perspective view schematically illustrating end caps having different sizes of LED straight tube lamps according to another embodiment of the present invention. FIG. 2 is an exploded view schematically showing the LED straight tube lamp shown in FIG. FIG. 3 is a perspective view schematically showing the front and top surfaces of the end cap of the LED straight tube lamp according to one embodiment of the present invention. FIG. 4 is a perspective view schematically showing a bottom surface of the end cap shown in FIG. FIG. 5 is a partial plan sectional view schematically showing a connection portion between the end cap and the tube of the LED straight tube lamp according to the embodiment of the present invention. FIG. 6 is a perspective sectional view schematically showing an internal structure of an end cap (including a magnetic metal member and a hot melt adhesive) entirely made of resin according to another embodiment of the present invention. FIG. 7 is a perspective view schematically showing an end cap and a tube body made of resin as a whole, which are adhered using an induction coil, according to another embodiment of the present invention. FIG. 8 is a perspective view schematically illustrating a supporting portion and a protruding portion of the electric insulating tube of the end cap of the LED straight tube lamp according to another embodiment of the present invention. FIG. 9 is a plan sectional view taken along line XX, schematically showing the internal structure of the electric insulating tube and the magnetic metal member of the end cap in FIG. FIG. 10 is a plan view schematically illustrating an arrangement of openings on the surface of the magnetic metal member of the end cap of the LED straight tube lamp according to another embodiment of the present invention. FIG. 11 is a plan view schematically showing the recess / projection on the surface of the magnetic metal member of the end cap of the LED straight tube lamp according to another embodiment of the present invention. FIG. 12 is a plan view in the radial axis direction of the tubular body schematically showing the connection structure between the end cap and the tubular body in FIG. 8 when the electrically insulating tube is annular. FIG. 13 is a plan sectional view in the radial axis direction of the tubular body schematically showing the connection structure between the end cap and the tubular body in FIG. 8 when the electric insulating tube is elliptical or oval. FIG. 14 is a perspective view schematically showing still another end cap of the LED straight tube lamp according to still another embodiment of the present invention. FIG. 15 is a plan sectional view schematically illustrating an end structure of a tube of the LED straight tube lamp according to the embodiment of the present invention. FIG. 16 is a cross-sectional plan view schematically showing a local structure of a crossover portion at the end of the tubular body in FIG. FIG. 17 schematically shows the internal structure of the LED straight tube lamp according to one embodiment of the present invention, in which two reflection films are adjacent to both sides of the LED lighting strip in the circumferential direction of the tube. FIG. FIG. 18 is a tube of an LED straight tube lamp according to another embodiment of the present invention, in which one reflection film is disposed in contact with one side of the LED illumination strip in the circumferential direction of the tube. 2 is a plan sectional view schematically showing the internal structure of FIG. FIG. 19 is an internal structure of a tube of an LED straight tube lamp according to still another embodiment of the present invention, in which a reflection film disposed under the LED lighting strip extends in both circumferential directions of the tube. It is a plane sectional view which shows typically. FIG. 20 shows a tube of an LED straight tube lamp according to yet another embodiment of the present invention, in which a reflection film disposed below the LED lighting strip extends only in one circumferential direction of the tube. It is a plane sectional view showing an internal structure typically. FIG. 21 shows an LED according to an embodiment of the present invention in which two reflection films are adjacent to two sides of the LED illumination strip in the circumferential direction of the tube and extend in the circumferential direction of the tube. It is a plane sectional view showing typically the internal structure of the tube of a straight tube lamp. FIG. 22 is a flexible circuit sheet according to an embodiment of the present invention, in which both ends of the LED lighting strip are soldered to the output terminal of the power supply through the transition portion of the tube of the LED straight tube lamp. It is a plane sectional view which shows typically. FIG. 23 is a plan sectional view schematically showing a two-layer structure of a flexible circuit sheet as an illumination strip of the LED straight tube lamp according to one embodiment of the present invention. FIG. 24 is a perspective view schematically showing a solder pad of a flexible circuit sheet of an LED lighting strip for soldering a power supply of an LED straight tube lamp to a printed circuit board according to an embodiment of the present invention. It is. FIG. 25 is a perspective view schematically showing the arrangement of the solder pads of the flexible circuit sheet of the LED lighting strip of the LED straight tube lamp according to one embodiment of the present invention. FIG. 26 is a perspective view schematically showing three solder pads arranged in a line on a flexible circuit sheet of an LED lighting strip of an LED straight tube lamp according to another embodiment of the present invention. FIG. 27 is a perspective view schematically illustrating two rows of solder pads of the flexible circuit sheet of the LED lighting strip of the LED straight tube lamp according to still another embodiment of the present invention. FIG. 28 is a perspective view schematically showing four solder pads arranged in a line on a flexible circuit sheet of an LED lighting strip of an LED straight tube lamp according to still another embodiment of the present invention. FIG. 29 is a perspective view schematically illustrating two rows of solder pads of a flexible circuit sheet of an LED lighting strip of an LED straight tube lamp according to still another embodiment of the present invention. is there. FIG. 30 is a perspective view schematically showing a through hole formed in a solder pad of a flexible circuit sheet of an LED lighting strip of the LED straight tube lamp according to one embodiment of the present invention. FIG. 31 is a side view schematically illustrating a solder bonding process using a solder pad of a flexible circuit sheet and a power supply printed circuit board as the LED lighting strip of FIG. 30 according to an embodiment of the present invention. It is the plane sectional view seen. FIG. 32 schematically shows a soldering step using a flexible circuit sheet solder pad as the LED lighting strip of FIG. 30 and a power supply printed circuit board according to another embodiment of the present invention. It is the plane sectional view which looked at the place where the penetration hole of a solder pad was near the end of a flexible circuit sheet from the side. FIG. 33 is a perspective view schematically showing a cutout provided in a solder pad of a flexible circuit sheet of an LED lighting strip of the LED straight tube lamp according to one embodiment of the present invention. FIG. 34 is a plan sectional view taken along line AA ′ of FIG. FIG. 35 is a perspective view schematically illustrating a circuit board assembly including a flexible circuit sheet of an LED lighting strip and a printed circuit board of a power supply according to another embodiment of the present invention. FIG. 36 is a perspective view schematically showing another arrangement of the circuit board assembly of FIG. FIG. 37 is a perspective view schematically illustrating an LED lead frame for a light source of an LED straight tube lamp according to an embodiment of the present invention. FIG. 38 is a perspective view schematically showing a power supply of the LED straight tube lamp according to one embodiment of the present invention. FIG. 39 is a perspective view schematically showing that a printed circuit board of a power supply is vertically joined to a hard circuit board made of aluminum by soldering according to another embodiment of the present invention. FIG. 40 is a perspective view schematically showing a thermocompression bonding head used for soldering a flexible circuit sheet of an LED lighting strip and a printed circuit board of a power supply according to an embodiment of the present invention. FIG. 41 is a plan view schematically illustrating a thickness difference between the solder on the pad of the flexible circuit sheet and the solder on the printed circuit board of the power supply of the LED lighting strip according to the embodiment of the present invention. is there. FIG. 42 is a perspective view schematically illustrating soldering means for soldering the flexible circuit sheet of the LED lighting strip and the printed circuit board of the power supply according to an embodiment of the present invention. FIG. 43 is a plan view schematically showing the rotating state of the rotary platform of the soldering means in FIG. FIG. 44 is a plan view schematically illustrating an external device for heating a hot melt adhesive according to another embodiment of the present invention. FIG. 45 is a cross-sectional view schematically illustrating a hot melt adhesive according to an embodiment of the present invention, in which high-permeability powder having a small particle size is uniformly distributed. FIG. 46 is a cross-sectional view schematically showing a hot melt adhesive forming a closed circuit in which high-permeability powder having a small particle size is unevenly distributed according to an embodiment of the present invention. FIG. 47 is a cross-sectional view schematically illustrating a hot-melt adhesive according to another embodiment of the present invention, in which a highly permeable powder having a large particle diameter is unevenly distributed to form a closed circuit. FIG. 48 is a perspective view schematically showing a flexible circuit sheet of an LED lighting strip having two conductive wiring layers according to another embodiment of the present invention.

  The present disclosure provides a novel LED straight tube lamp based on a glass tube that solves the above-mentioned problems. The present disclosure is described in the following embodiments with reference to the drawings. The description of the various embodiments of this invention set forth below is for purposes of illustration and provides only examples. The following description is not intended to be exhaustive, nor is it intended to be limited to the precise form disclosed. These illustrative embodiments are merely examples, and many implementations and variations are possible that do not require the details of the present disclosure. Also, it should be emphasized that while the disclosure provides details of alternative examples, the alternatives listed herein are not exhaustive. Also, any coherence of detail between the various examples should not be construed as necessary details. It is not possible to state this disclosure to list every possible variation for every feature. The wording in the claims should be consulted in determining the essential elements of the invention.

  Referring to FIGS. 1 and 2, an LED straight tube lamp according to an embodiment of the present invention includes one tube 1, one LED lighting strip arranged in the tube 1, and the inside of the tube 1. And two end caps 3 respectively placed at both ends. The tube 1 is made of resin or glass. The size of the two end caps 3 may be the same or different. Referring to FIG. 1A, in some embodiments, the size of one end cap may be from about 30% to about 80% of the size of the other end cap.

  In one embodiment, the tubing 1 is made of tempered glass to avoid easy breakage and electric shock that occurs with conventional glass tubing, and the rapid aging that often occurs with resin tubing. . The glass tube 1 may be further strengthened by a chemical strengthening method or a physical strengthening method in various embodiments of the present invention.

  A typical chemical strengthening method is performed by changing the composition of the glass surface by exchanging Na ions or K ions on the glass surface with other alkali metal ions. Sodium (Na) or potassium (K) ions and other alkali metal ions on the glass surface are exchanged on the glass surface to form an ion exchange layer. The glass is then cooled to room temperature and tensioned on the inside while being compressed on the outside so as to increase it to the desired strength. Such chemical tempering methods include, but are not limited to, glass tempering methods such as high temperature ion exchange, low temperature ion exchange, dealkalization, surface crystallization, and / or sodium silicate tempering. Hereinafter, these will be further described.

The high-temperature ion exchange method includes the following steps. A glass containing sodium oxide (Na ₂ O) or potassium oxide (K ₂ O) is immersed in a molten lithium salt in a temperature range between a softening point and a glass transition point. Thus, the Na ions in the glass replace the lithium ions in the molten salt. Thereafter, the glass is cooled to room temperature. Since the surface layer containing lithium ions has a different expansion coefficient from the inner layer containing Na ions or K ions, residual stress is generated and strengthened on the surface of the glass. In contrast, glasses containing Al ₂ O ₃ , TiO ₂ , and other constituent materials produce glass crystals with a very low expansion coefficient due to ion exchange. On the crystallized glass surface after cooling, high pressures of up to 700 MPa occur, which strengthen the glass.

The low-temperature ion exchange method includes the following steps. First, monovalent cations (for example, K ions) exchange with alkali ions (for example, Na ions) on the surface layer in a temperature range lower than the strain point, so that K ions can permeate the surface. For example, in order to produce Na ₂ O—CaO—SiO ₂ glass, the glass may be immersed in a molten salt at 400 ° C. or higher for 10 hours. In the low-temperature ion exchange method, a stronger glass can be easily obtained, the processing method is simple, and the transparency of the glass is not impaired or the shape is not distorted.

The dealkalization method involves handling the glass using a platinum (Pt) catalyst with sulfurous acid gas and water in a high temperature atmosphere. Na ⁺ ions are transported out of the glass surface where they react with the Pt catalyst. As a result, the surface layer becomes a layer containing a large amount of SiO ₂ , resulting in low expansion glass, and a compressive stress is generated by cooling.

  Although different from the surface crystallization method and the high-temperature ion exchange method, only the glass surface is heat-treated to form microcrystals having a low expansion coefficient, thereby strengthening the glass.

  The sodium silicate glass strengthening method is a strengthening method using sodium silicate (water glass) in an aqueous solution at 100 degrees Celsius and including a pressure treatment in several kinds of atmospheres. A hard-to-stick glass surface is obtained.

  Physical strengthening methods include, but are not limited to, methods that alter the structure of an object, such as coating or strengthening fragile areas. The coating applied can be a ceramic coating, an acrylic paint, or a glass coating, depending on the material used. The coating can be performed in the liquid or gas phase.

  The above-described glass strengthening methods including the physical strengthening method and the chemical strengthening method may be performed alone or in any combination.

  Referring to FIG. 2 and FIG. 15, the glass tube of the LED straight tube lamp according to one embodiment of the present invention has an end having a reinforced structure described below. The glass tube 1 includes one main body 102, two rear ends 101 formed at both ends of the main body 102, and end caps 3 respectively placed on the rear ends 101. The outer diameter of at least one of the rear ends 101 is smaller than the outer diameter of the main body 102. In the embodiments of FIGS. 2 and 15, the outer diameter of the two rear ends 101 is smaller than the outer diameter of the main body 102. The surface of the rear end 101 is parallel to the surface of the main body 102 in the cross-sectional view. Specifically, the glass tube 1 is reinforced at both ends, and the rear end portion 101 is formed to have a reinforced structure. In a specific embodiment, the rear end 101 having the reinforced structure is each covered with an end cap 3, and the outer diameter of the end cap 3 and the outer diameter of the main body 102 have little or no difference. In other words, since the end cap 3 and the main body 102 have the same outer diameter, there is no step between the end cap 3 and the main body 102. As a result, the support in the packing box for transporting the LED straight tube lamp contacts not only the end cap 3 but also the tube 1, and the load applied to the entire LED straight tube lamp is equalized. Further, a situation in which a force is applied only to the end cap 3 and the connection portion between the end cap 3 and the rear end portion 101 is broken due to stress concentration is avoided. Therefore, the quality and appearance of the product are improved.

  In one embodiment, the end cap 3 and the body 102 have substantially the same outer diameter. These diameters may have a tolerance of, for example, ± 0.2 millimeters (mm), or possibly ± 1.0 millimeters (mm). Depending on the thickness of the end cap 3, the difference between the outer diameter of the rear end portion 101 and the outer diameter of the main body portion 102 is about 1 mm to about 10 mm for normal product use. In some embodiments, the difference between the outer diameter of the trailing end 101 and the outer diameter of the body 102 may be from about 2 mm to about 7 mm.

  Referring to FIG. 15, the tube 1 is further provided with a transition portion 103 between the main body portion 102 and the rear end portion 101. In one embodiment, the transition portion 103 is a curved portion having a slope formed so as to smoothly connect the main body portion 102 and the rear end portion 101 at both ends. For example, both ends of the crossover portion 103 may have an arc shape in a cross-sectional view along the axial direction of the tube 1. Further, one of the slopes is connected to the main body 102 and the other is connected to the rear end 101. The angle of the slope arc is greater than 90 degrees. The outer surface of the rear end portion 101 is a continuous surface, and is parallel to the outer surface of the main body 102 in a cross-sectional view along the axial direction of the tubular body. In another embodiment, the shape of the transition portion 103 may not be a curve or an arc. The length of the crossover portion 103 along the axial direction of the tube 1 is in a range from about 1 mm to about 4 mm. In the experiment, the following was found. One is that when the length of the crossover portion 103 along the axial direction of the tube 1 is less than 1 mm, the strength of the crossover portion is insufficient. When the length of the crossover portion 103 along the axial direction of the tubular body 1 exceeds 4 mm, the desired illumination surface is reduced because the main body 102 is shortened. Further, since the end cap 3 becomes longer, more material of the end cap 3 is required.

  According to FIGS. 5 and 16, in one particular embodiment, the tube 1 is made of glass and has a rear end 101, a body 102 and a transition 103. The transition portion 103 has two arc-shaped slopes at both ends and has an S-shape. One of the slopes has a convex shape which is located on the main body 102 side and protrudes outward, and the other slope has a concave shape which is located on the rear end portion 101 side and enters the inside. Generally, the radius of curvature R1 of the slope / arc surface between the transition portion 103 and the main body portion 102 is smaller than the radius of curvature R2 of the slope / arc surface between the transition portion 103 and the rear end portion 101. For example, the ratio of R1: R2 ranges from about 1: 1.5 to about 1:10, and in some embodiments is more effective between about 1: 2.5 to about 1: 5, and In some embodiments, between about 1: 3 and about 1: 4 is more effective. As described above, the slope / arc surface on the rear end portion 101 side of the transition portion 103 has an outer surface in a compressed state and the inner surface is pulled, and the slope / arc surface on the body portion 102 side of the transition portion 103 has The outer surface is in tension and the inner surface is in compression. Thereby, the purpose of strengthening the crossover portion 103 of the tubular body 1 has been achieved.

  Taking the standard specification of the T8 illumination as an example, the outer diameter of the rear end portion 101 is formed between 20.9 mm and 23 mm. If the outer diameter of the rear end portion 101 is less than 20.9 mm, the power source cannot be properly inserted into the tube 1 because it is too small. In some embodiments, the outer diameter of body portion 102 is from about 25 mm to about 28 mm. If the outer diameter of the main body 102 is less than 25 mm, it is inconvenient to strengthen the end of the main body 102 as far as the current technology is concerned, while the main body 102 having an outer diameter larger than 28 mm does not conform to the industrial standard.

  Referring to FIGS. 3 and 4, in one embodiment of the present invention, the end caps 3 are arranged in an electrically insulating tube 302, a heat conductive member 303 put on the electrically insulating tube 302, and an electrically insulating tube 302, respectively. And two hollow conductive pins 301. The heat conduction member 303 may be a tube-shaped metal ring.

  Referring to FIG. 5, in one embodiment, one end of the heat conductive member 303 extends from the electrically insulating tube 302 of the end cap 3 toward one end of the tube 1, and the tube is formed using a hot melt adhesive 6. Adhesively bonded to one end. As described above, the end cap 3 extends to the transition portion 103 of the tubular body 1 via the heat conductive member 303. Since the heat conductive member 303 and the connecting portion 103 are tightly connected to each other, when the hot melt adhesive 6 is used to connect the heat conductive member 303 and the tube 1, the hot melt adhesive 6 is connected to the end cap 3. And stays on the main body 102 without overflowing. Further, since the end of the electric insulating tube 302 facing the tube 1 does not extend to the crossover portion 103, there is a gap between the electric insulating tube 302 and the crossover portion 103. In one embodiment, the electrically insulating tube 302 is not limited to resin or ceramic, and may be made of any material having low conductivity.

  Hot melt adhesive 6 is a composition comprising what is commonly known as so-called "weld mud powder", and in some embodiments, further comprises phenolic resin 2127 #, shellac, rosin, calcite powder, zinc oxide, and ethanol. Including one or more. Rosin is a thickener and has the property of being soluble in ethanol but not soluble in water. In some embodiments, in addition to the intrinsic viscosity, the hot melt adhesive 6 including rosin may expand when heated to high temperatures and change its physical state to cure. As a result, the end cap 3 and the tube 1 can be tightly joined to each other by using a hot-melt adhesive, which leads to the realization of automatic production of LED straight tube lamps. In one embodiment, the hot melt adhesive 6 expands and flows, and may eventually cure after cooling. In this embodiment, the volume of the hot melt adhesive 6 may expand to about 1.3 times its original size when heated from room temperature to 200 to 250 degrees Celsius. The material of the hot melt adhesive 6 is not limited to those described in this specification. Alternatively, a material that cures the hot melt adhesive 6 as soon as it is heated to a predetermined temperature may be used. The hot melt adhesive 6 in each embodiment of the present invention can withstand high temperatures in the end cap 3 due to heat generated from a power supply. Therefore, the tube 1 and the end cap 3 can be fixed to each other without impairing the reliability of the LED straight tube lamp.

  Further, as shown by a dotted line B in FIG. 5, a housing space for housing the hot melt adhesive 6 may be formed between the inner surface of the heat conducting member 303 and the outer surface of the tube 1. . In other words, the hot melt adhesive 6 has a first imaginary plane (indicated by a dotted line B in FIG. 5) perpendicular to the axial direction of the tubular body 1. The receiving space is filled from a place passing through the outer surface of the body 1. The thickness of the hot melt adhesive 6 may be 0.2 mm to 0.5 mm. The hot melt adhesive 6 expands and hardens, and connects to the tube 1 and the end cap 3 to fix them. By providing a difference in height between the rear end portion 101 and the main body portion 102 by the crossover portion 103, the adhesive applied to the rear end portion 101 is prevented from protruding. As a result, human resources for removing the protruding adhesive are reduced, and the productivity of the LED straight tube lamp is increased. The hot melt adhesive 6 is heated and expanded by receiving heat from the heat conducting member 303 through which electricity is supplied from an external heating device, and finally hardens after cooling, whereby the end cap 3 is joined to the tube 1. Is done.

  Referring to FIG. 5, in one embodiment, the electrically insulating tube 302 of the end cap 3 includes a first tubular portion 302 a and a second tubular portion 302 b connected along the axial direction of the tubular body 1. The outer diameter of the second tubular portion 302b is smaller than the outer diameter of the first tubular portion 302a. In some embodiments, the difference in outer diameter between the first tubular portion 302a and the second tubular portion 302b is between about 0.15 mm and about 0.30 mm. The heat conductive member 303 is covered so as to cover the outer peripheral surface of the second tubular portion 302b. The outer surface of the heat conducting member 303 is coplanar with or substantially flush with the outer peripheral surface of the first tubular portion 302a. In other words, the heat conducting member 303 and the first tubular portion 302a have a substantially constant outer diameter from end to end. As a result, the entire end cap 3 and the entire LED straight tube lamp are smooth in appearance and have a substantially uniform tubular outer surface. This also ensures that the load on the entire LED straight tube lamp during transport is also uniform. In one embodiment, the ratio of the length of the heat conducting member 303 along the axial direction of the end cap 3 to the axial length of the electrically insulating tube 302 is from about 1: 2.5 to about 1: 5. Over a range.

  In one embodiment, the second tubular portion 302b is at least partially disposed around the tubular body 1 for secure adhesion between the end cap 3 and the tubular body 1, and the accommodation space is formed by the second tubular portion 302b. It further includes a space surrounded by the inner surface and the outer surface of the rear end portion 101 of the tube 1. The hot melt adhesive 6 is filled into at least a part of a portion (indicated by a dotted line “A” in FIG. 5) where the inner surface of the second tubular portion 302b and the outer surface of the rear end portion 101 of the tubular body 1 overlap. You. In other words, the hot-melt adhesive 6 has a second virtual plane (indicated by a dotted line A in FIG. 5) perpendicular to the axial direction of the tubular body 1. The accommodation space is filled from the place passing through the melt adhesive 6 and the rear end portion 101.

  The hot melt adhesive 6 does not completely fill the entire accommodation space as shown in FIG. 5, especially when a gap is secured or formed between the heat conductive member 303 and the second tubular portion 302b. You may. In other words, the hot melt adhesive 6 may only partially fill the receiving space. In the manufacture of the LED straight tube lamp, the amount of the hot melt adhesive 6 applied to cover between the heat conductive member 303 and the rear end portion 101 is such that the hot melt adhesive 6 expands in a subsequent heating process. The flow rate may be increased appropriately so as to flow between the second tubular portion 302b and the rear end portion 101, and to join the second tubular portion 302b and the rear end portion 101 when hardened after cooling.

  In assembling the LED straight tube lamp, the rear end portion 101 of the tube 1 is inserted into one of the end caps 3. The axial length of the inserted portion of the rear end portion 101 of the tube 1 is one third (（) to two thirds (2/3) of the total axial length of the heat conducting member 303. / 3). One benefit is that there is a sufficient creepage between the hollow conductive pin 301 and the heat conductive member 303 so that short circuits that can lead to dangerous electric shock to humans are not easily formed. On the other hand, the creepage distance between the hollow conductive pin 301 and the heat conductive member 303 is increased due to the electrical insulation effect of the electrical insulating tube 302, so that the high-voltage test can be easily passed and no electric shock is caused to a person. .

  Furthermore, the presence of the second tubular portion 302b placed between the hot melt adhesive 6 and the heat conductive member 303 reduces heat transferred from the heat conductive member 303 to the hot melt adhesive 6. To solve this problem, referring to FIG. 4, in one embodiment, around the end of the second tubular portion 302b facing the tubular body 1 (ie, far from the first tubular portion 302a), a plurality of A notch 302c is provided. These notches 302c serve to increase the contact area between the heat conductive member 303 and the hot melt adhesive 6, thereby causing the hot melt adhesive 6 to harden. It enables rapid heat transfer to the adhesive 6. Furthermore, since the hot melt adhesive 6 electrically insulates the heat conductive member 303 and the tube 1, the user does not receive an electric shock even when the user touches the heat conductive member 303 connected to the damaged tube 1.

  The heat conductive member 303 can be made of various heat conductive materials. The heat conduction member 303 may be a metal plate such as an aluminum alloy. The heat conducting member 303 covering the second tubular portion 302b may be tubular or annular. The electrical insulation tube 302 may be made of electrical insulation, but in some embodiments, heat transfer so that heat does not adversely affect the performance of the power supply module by reaching the power supply module within the end cap 3. The rate is low. In one embodiment, the electric insulation tube 302 may be a resin tube.

  Alternatively, the heat conducting member 303 may be formed by a plurality of metal plates arranged around the tubular portion 302b at equal intervals or different intervals.

  The end cap 3 may be made to include other types of structures or other elements. Referring to FIG. 6, the end cap 3 according to another embodiment may further include the magnetic metal member 9 inside the electrically insulating tube 302 and may not include the heat conductive member 3. The magnetic metal member 9 is fixedly arranged on the inner peripheral surface of the electric insulating tube 302, is located between the electric insulating tube 302 and the tube 1, and partially overlaps the tube 1 in the radial direction. In the present embodiment, the entirety of the magnetic metal member 9 is in the electric insulating tube 302, and the hot melt adhesive 6 covers the inner surface of the magnetic metal member 9 (the surface of the magnetic metal tube member 9 facing the tube 1). It covers and adheres to the outer peripheral surface of the tubular body 1. In some embodiments, the hot melt adhesive 6 covers the entire inner surface of the magnetic metal member 9 to increase the adhesive area and improve the stability of the adhesive.

  Referring to FIG. 7, when manufacturing the LED straight tube lamp according to the present embodiment, the electric insulating tube 302 is put into an external heating device depending on the embodiment. The external heating device is an induction coil 11 in some embodiments, and the induction coil 11 and the magnetic metal member 9 are arranged so as to face (or approach) each other in a direction in which the diameter of the electric insulating tube 302 extends. The induction coil 11 forms an electromagnetic field when a voltage is applied, and the electromagnetic field causes current generation and heating in the magnetic metal member 9. The heat from the magnetic metal member 9 is transmitted to the hot-melt adhesive 6 to expand and flow the hot-melt adhesive 6, and then, after cooling, is cured to obtain the adhesion between the end cap 3 and the tube 1. The induction coil 11 may be made of copper. For example, the induction coil 11 may be formed of a metal wire having a diameter of about 5 mm to about 6 mm formed into a circular coil having a diameter of about 30 mm to about 35 mm slightly larger than the outer diameter of the end cap 3. You may be. Since the end cap 3 and the tube 1 may have the same outer diameter, the outer diameter may vary according to the outer diameter of the tube 1. Thus, the diameter of the induction coil 11 used can vary depending on the type of tube 1. For example, the outer diameters of the tubes of T12, T10, T8, T5, T4, and T2 are 38.1 mm, 31.8 mm, 25.4 mm, 16 mm, 12.7 mm, and 6.4 mm, respectively.

  Further, the induction coil 11 may include a power amplifier for amplifying the AC power to about 1-2 times its original strength. For more uniform energy transfer, the induction coil 11 and the electrically insulating tube 302 should be coaxially aligned. In some embodiments, the difference between the axes of the induction coil 11 and the electrically insulating tube 302 does not exceed about 0.05 mm. When the joining step is completed, the end cap 3 and the tube 1 are moved away from the induction coil. When the energy is absorbed, the hot melt adhesive 6 expands and flows, and hardens after cooling. In one embodiment, the magnetic metal member 9 can be heated to a temperature of about 250-300 degrees Celsius, and the hot melt adhesive 6 can be heated to a temperature of 200-250 degrees Celsius. Here, the material of the hot melt adhesive is not limited, and a material that immediately cures the hot melt adhesive that has absorbed heat energy may be used.

  In one embodiment, the end cap 3 and the tube 1 are moved into the induction coil 11 so that the hot melt adhesive 6 is heated to expand and flow. When moved away from the induction coil again, the hot melt adhesive 6 may be fixed in a position where it cools and hardens. Alternatively, the end cap 3 and the tube 1 are moved by the induction coil 11 being moved to surround the end cap 3, whereby the hot melt adhesive 6 is heated to expand and flow, and then the induction coil 11 is moved from the end cap 3 again. When moved away, the hot melt adhesive 6 may be fixed at a position where it cools and hardens. In one embodiment, the external heating device for heating the magnetic metal member 9 includes a plurality of the same appliances as the induction coil 11, and in the heating step, the external heating device moves with respect to the end cap 3 and the tube 1. Is also good. Thus, in the heating step, the external heating device moves away from the end cap 3. However, the length of the tube 1 is much larger than the length of the end cap 3 and can be up to about 240 cm in certain instruments. Therefore, if there is a position error, poor joining between the end cap 3 and the tube 1 may occur during the process of moving the tube 1 including the end cap 3 in and out of the induction coil 11 in the above-described direction. There is.

  Referring to FIG. 44, in the external heating device 110 including a plurality of sets of the upper and lower semicircular fixtures 11a, the same heating effect as that of the induction coil 11 is obtained. Thereby, the risk of the above-mentioned breakage due to the relative movement of the putting in and out can be reduced. The upper and lower semicircle fixtures 11a each have a semicircular coil formed by winding a metal wire having a thickness of about 5 mm to about 6 mm. The combination of the upper and lower semi-circular fixtures forms an annulus having a diameter of about 30 mm to about 35 mm, and the semi-circular coil inside it forms a closed loop to form the induction coil 11 as described above. . In the present embodiment, the end cap 3 and the tubular body 1 do not move so as to relatively enter and exit, but are carried into the notch of the lower semicircular fixture. Specifically, the end cap 3 provided with the tube 1 first moves on the production line, and is then carried into the notch of the lower semicircular fixture. The upper and lower semicircular fixtures are then combined to form a closed loop, and when heating is complete, the fixtures are separated. This method reduces the positional accuracy and yield issues required in manufacturing.

  Referring to FIG. 6, the electrically insulating tube 302 is further divided into two parts, a first tubular portion 302d and a second tubular portion 302e. In order to more reliably support the magnetic metal member 9, the inner diameter of the first tubular portion 302d for supporting the magnetic metal member 9 is larger than the inner diameter of the second tubular portion 302e without the magnetic metal member 9, and A staircase structure is formed at a connection portion between the portion 302d and the second tubular portion 302e. In this way, the end of the magnetic metal member 9 contacts the step structure when viewed in the axial direction so that the entire inner surface of the end cap becomes smooth. Further, the magnetic metal member 9 can take various forms, such as a sheet-like or tubular structure arranged along the peripheral surface, but the magnetic metal member 9 is arranged coaxially with the electrically insulating tube 302.

  Referring to FIGS. 8 and 9, the electrically insulating tube 302 may further be provided with a support portion 313 that stands inward on the inner surface thereof, and the magnetic metal member 9 is provided along the support portion 313 along the axial direction. May be in contact with the upper end of the In some embodiments, the thickness of the support 313 measured along the radial direction of the electrically insulating tube 302 is between 1 mm and 2 mm. The electrically insulating tube 302 may further be provided with a protrusion 310 standing inward on the inner surface thereof, and the magnetic metal member 9 may contact the side end of the protrusion 310 along the axial direction. . Further, the outer surface of the magnetic metal member 9 and the inner surface of the electric insulating tube 302 may be separated by a gap. The thickness of the protrusion 310 measured along the radial direction of the electric insulating tube 302 is smaller than the thickness of the support portion 313 measured along the radial direction of the electric insulating tube 302, and in one embodiment, is approximately 0.2 mm. To 1 mm.

  Referring to FIG. 9, the protruding portion 310 and the support portion 313 are connected along the axial direction, and the magnetic metal member 9 contacts the upper end of the support portion 313 along the axial direction, while the side end of the protruding portion 310 has a radial direction. , At least a part of the protruding portion 310 is interposed between the magnetic metal member 9 and the electric insulating tube 302. The protrusions 310 may be arranged in a circular arrangement along the circumferential direction of the electrically insulating tube 302. Alternatively, the protrusion 310 may be a plurality of bumps disposed on the inner surface of the electrically insulating tube 302. These bumps are formed on the inner peripheral surface of the electric insulating tube 302 if the outer surface of the magnetic metal member 9 and the inner surface of the electric insulating tube 302 are in minimum contact with each other and hold the hot melt adhesive 6. Along, may be spaced at equal or different intervals. In another embodiment, if the end cap 3 is entirely made of metal, an insulator disposed under the hollow conductive pin for withstand voltage is required.

  In one embodiment, referring to FIG. 10, the magnetic metal member 9 has one or more circular openings 91. Note that the opening 91 reduces the contact area between the magnetic metal member 9 and the inner peripheral surface of the electric insulating tube 302 instead of being circular, and the function of the magnetic metal member 9 to heat the hot melt adhesive 6. May be, for example, elliptical, square, or star-shaped. In some embodiments, openings 91 occupy about 10% to about 50% of the surface area of magnetic metal member 9. The openings 91 can be circumferentially arranged on the magnetic metal member 9 at equal intervals or at different intervals.

  Referring to FIG. 11, in another embodiment, the magnetic metal member 9 has a recess / ridge 93 on the surface facing the electrically insulating tube 302. For example, in one embodiment, the ridges rise from the inner surface of the magnetic metal member 9 and the recesses sink below the inner surface of the magnetic metal member 9. The recess / raised portion 93 reduces the contact area between the inner peripheral surface of the electric insulating tube 302 and the outer surface of the magnetic metal member 9 while maintaining the function of melting and curing the hot melt adhesive 6. In summary, the magnetic metal member 9 has openings, recesses or ridges on its surface to serve the purpose of reducing the contact area between the inner peripheral surface of the electrically insulating tube 302 and the outer surface of the magnetic metal member 9, or It may be configured to have any combination of these. At the same time, the magnetic metal member 9 and the tube 1 must be firmly joined for heating and hardening of the hot melt adhesive 6.

  Referring to FIG. 12, in one embodiment, the magnetic metal member 9 is annular. Referring to FIG. 13, in another embodiment, the magnetic metal member 9 is non-annular, for example, an oval ring, but is not limited thereto. When the magnetic metal member 9 has an oval ring shape, the function of heating and curing the hot melt adhesive 6 while reducing the contact area between the inner peripheral surface of the electric insulating tube 302 and the outer surface of the magnetic metal member 9 is appropriate. The short axis of the long ring is slightly larger than the outer diameter of the rear end portion 101 of the tubular body 1. For example, a support portion 313 may be formed on the inner surface of the electrically insulating tube 302, and the non-annular magnetic metal member 9 is supported by the support portion 313. In this manner, the function of curing the hot melt adhesive 6 while reducing the contact area between the outer surface of the magnetic metal member 9 and the inner surface of the electric insulating tube 302 may be performed. In another embodiment, the magnetic metal member 9 is disposed on the outer surface of the end cap 3 in place of the heat conducting member 303 as shown in FIG. 5, and heats the hot melt adhesive 6 by electromagnetic induction. And may function to cure.

Referring to FIGS. 45 to 47, in another embodiment, the magnetic metal member 9 may be omitted. Alternatively, in some embodiments, the hot melt adhesive 6 may comprise a high permeability powder 65 at a predetermined ratio, the relative magnetic permeability, for example, in the range of about 10 ² to about 10 ⁶ is there. This powder may be used in place of the calcite powder originally contained in the hot melt adhesive 6, and in certain embodiments, the volume ratio between the highly permeable powder 65 and the calcite powder is approximately 1: 1 to 1: 1. 1: 3. In some embodiments, the material of the highly permeable powder 65 is one of iron, nickel, cobalt, an alloy thereof, or any combination thereof. And / or the weight percentage of the highly permeable powder 65 to the hot melt adhesive is from about 10% to about 50%. And / or the average particle size of the powder may be from about 1 to about 30 micrometers. Such a hot melt adhesive 6 joins the end cap 3 and the tube 1 to be qualified in a fracture test, a torque test, and a bending test. Generally, bending test criteria for end caps of LED straight tube lamps are greater than 5 Newton meters (Nt-m) and torque test criteria are greater than 1.5 Newton meters (Ntm). In one embodiment, the end of the end cap 3 and the end of the tube 1 fixed with the hot melt adhesive 6 are: A torque test of 5 to 5 Newton meters (Nt-m) and a bending test of 5 to 10 Newton meters (Nt-m) are considered to be eligible. First, when the switch of the induction coil 11 is turned on, the highly permeable powder uniformly distributed in the hot melt adhesive 6 is charged, whereby the hot melt adhesive 6 is heated, expanded, flows, and cooled. Will cure later. This serves the purpose of joining the end cap 3 to the tube 1.

  Referring to FIGS. 45 to 47, the highly permeable powder 65 may be unevenly distributed in the hot melt adhesive 6. As shown in FIG. 45, the average particle size of the highly permeable powder 65 is about 1 to about 5 μm, and is uniformly distributed in the hot melt adhesive 6. When the inner surface of the end cap 3 is covered with such a hot melt adhesive 6, the highly permeable powder 65 cannot form a closed circuit with a uniform distribution, but is still heated by the magnetic hysteresis of the electromagnetic field. The hot melt adhesive 6 is heated. As shown in FIG. 46, the average particle size of the highly permeable powder 65 is about 1 to about 5 μm, and is distributed irregularly in the hot melt adhesive 6. When the inner surface of the end cap 3 is covered with such a hot melt adhesive 6, the highly permeable powder 65 forms a closed circuit, and is heated by the magnetic hysteresis of the electromagnetic field to heat the hot melt adhesive 6. As shown in FIG. 47, the average particle size of the highly permeable powder 65 is about 1 to about 5 μm, and is distributed irregularly in the hot melt adhesive 6. When the inner surface of the end cap 3 is covered with such a hot melt adhesive 6, the highly permeable powder 65 forms a closed circuit, and is heated by the magnetic hysteresis of the electromagnetic field to heat the hot melt adhesive 6. Therefore, depending on the adjustment of the particle size, distribution density, and manner of distribution of the highly permeable powder 65, an electromagnetic flux is applied to the end cap 3, and the heating temperature of the hot melt adhesive 6 can be controlled. In one embodiment, the hot melt adhesive 6 flows and cures after cooling from a temperature of 200-250 degrees Celsius. In another embodiment, the hot melt adhesive 6 cures immediately at a temperature between 200 and 250 degrees Celsius.

  Referring to FIGS. 14 and 39, in one embodiment, the end cap 3 'has a pillar 312 at the end. An opening with a groove 314 is provided at the top of the pillar 312. This groove is used for positioning the conductive lead 53, and its depth is, for example, 0.1 ± 1% mm in the peripheral portion. The conductive lead 53 extends through an opening at the top of the pillar 312 and is bent so that the end enters the groove 314. After that, the conductive metal cap 311 is put on the pillar 312 so that the conductive lead 53 is fixed between the pillar 312 and the conductive metal cap 311. In some embodiments, the inner diameter of the conductive metal cap 311 is 7.56 ± 5% mm, the outer diameter of the pillar 312 is 7.23 ± 5% mm, and the outer diameter of the conductive lead 53 is 0.5 ± 1% mm. However, these dimensions are not limited to the above, and the power supply 5 and the conductive metal cap 311 are once electrically connected by using the conductive metal cap 311 tightly covering the pillar 312 without using an extra adhesive. Just do it.

  With reference to FIGS. 2, 3, 12, and 13, in one embodiment, the end cap 3 is provided with a power supply within the end cap 3 to prevent the high temperature conditions within the end cap 3 from compromising reliability. The module may have an opening 304 to dissipate the heat generated. In some embodiments, the openings are arcuate, in particular, three arcs of different sizes. In one embodiment, the opening is in the form of three arcs of varying size. The opening of the end cap 3 may be any of the shapes described above, or may be a combination thereof.

  In another embodiment, the end cap 3 includes a socket (not shown) for installing a power module.

  Referring to FIG. 17, in one embodiment, the tube 1 may further include a diffusion film 13 adhered so as to coat the inner wall thereof. Thereby, the emitted light from the LED light source 202 is transmitted through the tube 1 after being diffused by the diffusion film 13. There are various types of the diffusion film 13. For example, it may be a coating on the inner or outer wall of the tube 1, a diffusion coating layer (not shown) covering the surface of each LED light source 202, or a separate film covering the LED light source 202.

  Referring to FIG. 17 again, when the diffusion film 13 has a sheet shape, the LED light source 202 is covered in a non-contact manner. The sheet-like diffusion film 13 is usually called a light diffusion sheet or a light diffusion board, and is usually polystyrene (PS), polymethacrylic acid (PMMA), polyethylene terephthalate (PET), or polycarbonate (PC), or any of these. Is a composition obtained by mixing diffusion particles with the combination of Light is transmitted and diffused through such a composition and spreads over a wide range of space like light emitted from a surface light source, so that the brightness of the LED straight tube lamp becomes uniform.

  In other embodiments, the diffusing film 13 is in the form of a light diffusing coating, which comprises calcium carbonate, calcium halophosphate, or aluminum oxide or any combination thereof. When the light-diffusing coating is made from calcium carbonate and a suitable solution, excellent light-diffusion effects and light transmission of more than 90% are obtained. Further, a diffusion film 13 in the form of a light diffusion coating is provided on the outer surface of the rear end 101 on which the hot melt adhesive 6 is applied in order to increase the frictional resistance between the end cap 3 and the rear end 101. It may be affixed. As compared with the example without the light diffusion coating, the rear end portion 101 including the diffusion film 13 is more effective in preventing the end cap 3 from accidentally dropping from the tube 1.

  In this embodiment, the composition of the diffusion film 13 in the form of a light diffusion coating comprises calcium carbonate, strontium phosphate (e.g., CMS-5000, white powder), a thickener, and ceramic activated carbon (e.g., SW-C of ceramic activated carbon). , Colorless liquids)). Specifically, such light diffusing coatings on the inner peripheral surface of the glass tube have an average thickness in the range of about 20 to about 30 μm. The light transmittance of the diffusion film 13 using this light diffusion coating is about 90%. The light transmittance of the diffusion film 13 is usually in a range from 85% to 96%. Further, the diffusion film 13 can also serve as an electrical shield that reduces the risk of electric shock for the user when the tube 1 is broken. Furthermore, the diffusion film 13 does not form a dark area inside the tubular body 1, and the rear part of the light source 202 and the side edge of the flexible circuit sheet are illuminated in order to improve the lighting comfort. In addition, the uniformity of the illuminance distribution of the light output from the LED light source 202 is further improved. In yet another possible embodiment, the light transmission of the diffusion film may be between 92% and 94% and the thickness is in the range of about 200 to about 300 μm.

  In other embodiments, the light diffusing coating can be made of a mixture comprising a calcium carbonate-based material, a reflective material such as strontium phosphate or barium sulfate, a thickener, ceramic activated carbon, and deionized water. The mixture coats the inner peripheral surface of the glass tube, with an average thickness in the range of about 20 to about 30 μm. Considering the microscopic diffusion phenomenon, light is reflected by the particles. The particle size of reflective materials such as strontium phosphate or barium sulfate is much larger than the particle size of calcium carbonate. Thus, by adding a small amount of reflective material into the light diffusing coating, the light diffusing effect can be effectively increased.

  In another embodiment, calcium halophosphate or aluminum oxide may also be a main material for forming the diffusion film 13. The particle size of calcium carbonate is about 2-4 μm, and the particle size of calcium halophosphate and aluminum oxide are about 4-6 μm and 1-2 μm, respectively. When a light transmittance of 85% to 92% is required, the light diffusion coating containing mainly calcium carbonate has a required average thickness of about 20 to about 30 μm, and the light diffusion coating containing mainly calcium halophosphate has the required average thickness. The thickness may be from about 25 to about 35 μm, and the required average thickness of the light-diffusing coating mainly comprising aluminum oxide may be from about 10 to about 15 μm. However, if the required light transmittance is above 92%, the light diffusing coating, mainly comprising calcium carbonate, calcium halophosphate or aluminum oxide, must be thinner.

  The main material of the light-diffusing coating and the corresponding thickness can be determined according to the place where the tube 1 is used and the required light transmittance. It should be noted that the higher the light transmittance of the diffusion film, the more apparent the graininess of the light source becomes.

  Referring to FIG. 17, a reflective film 12 may be provided or attached to the inner peripheral surface of the tubular body 1 as well. The reflection film 12 is provided around the LED light source 202 and occupies a partial area along the circumferential direction of the inner peripheral surface of the tube 1. As shown in FIG. 17, the reflection films 12 are arranged on both sides of the LED illumination strip 2 and extend along the circumferential direction of the tube 1. The LED illumination strip 2 is basically located at the center of the tube 1 and is sandwiched between two reflection films 12. Since the reflective film 12 plays a role of blocking the LED light source 202 from the side (the X direction shown in FIG. 17), the person cannot see the LED light source 202 directly from the person. Weaken. On the other hand, since the light emitted from the LED light source 202 is reflected by the reflection film 12, the spread angle of the LED straight tube lamp can be easily adjusted, and as a result, the light illuminating the direction without the reflection film 12 can be obtained. Increase. Thus, even with the same level of illumination performance, the LED straight tube lamp exhibits higher energy efficiency.

  Specifically, the reflective film 12 is provided on the inner peripheral surface of the tube 1 and has a gap 12 a for accommodating the LED illumination strip 2. The size of the gap 12a is the same as or slightly larger than the size of the LED illumination strip 2. In assembling, the LED light source 202 is attached to the LED illumination strip 2 (flexible circuit sheet) installed on the inner surface of the tube 1, and then the reflection film 12 and the gap 12 a of the reflection film 12 are The LED lighting strips 2 are combined correspondingly in a one-to-one relationship with the lighting strips 2 and are attached to the inner surface of the tube 1 so that the LED lighting strips 2 are exposed outside the reflective film 12.

  In one embodiment, the reflectivity of the reflective coating 12 is typically at least greater than 85%, and in some embodiments greater than 90%, and in some embodiments, greater than 95%. In one embodiment, the reflective film 12 extends along the circumferential length of the tube 1 and occupies about 30% to 50% of the area of the inner surface, in other words, relative to the circumferential length of the tube 1. The ratio of the peripheral length of the reflective film 12 along the inner peripheral surface of the tube 1 is about 0.3 to 0.5. In the embodiment shown in FIG. 17, the reflective film 12 is disposed substantially at the center in the circumferential direction of the tube 1, and two separate films of the reflective film 12 disposed on both sides of the LED lighting strip 2. The parts or sections are substantially equal in area. The reflective film 12 is made of PET including a reflective material, such as strontium phosphate, barium sulfate, or any combination thereof, and has a thickness between about 140 μm and 350 μm, or in some embodiments, a more favorable effect. It has a thickness between about 150 μm and about 220 μm to obtain. As shown in FIG. 18, in another embodiment, the reflection film 12 is disposed along the circumferential direction of the tube 1 only on one side of the LED illumination strip 2, and is formed on the inner surface of the tube 1. They occupy the same area in area (eg, 15% to 25% on one side). Alternatively, as shown in FIGS. 19 and 20, the reflective film 12 may be disposed without a gap, and the reflective film 12 is directly attached or attached to the inner surface of the tubular body 1, and The LED lighting strip 2 is mounted or fixed on the film 12, and the reflective film 12 is in a position in contact with one or both sides of the LED lighting strip 2.

  In the embodiments described above, various types of reflecting films 12 and diffusing films 13 can be employed to obtain optical effects including single reflection, single diffusion and / or a combination of reflection diffusion. For example, as shown in FIG. 19, FIG. 20, and FIG. 21, the tube 1 may include only the reflection film 12, and the diffusion film 13 is not placed in the tube 1.

  In other embodiments, the width of the LED lighting strip 2 (along the circumferential direction of the tube) may be expanded to occupy the peripheral area of the inner circumferential surface of the tube 1. Since the LED light strip 2 has a circuit protection layer made of ink that reflects light on its surface, the extended portion of the LED light strip 2 functions as the above-described reflective film 12. In some embodiments, the ratio of the circumferential length of the LED lighting strip 2 to the circumferential length of the tube 1 is about 0.2 to 0.5. Light emitted from the light source may be collected by reflection at the extended portion of the LED lighting strip 2.

  In other embodiments, the inner surface of the glass tube may be wholly or partially coated with a light-diffusing coating (except where the reflective film 12 is coated, but not with a light-diffusing coating. Regardless of the method, the outer surface of the rear end portion 101 of the tube 1 is coated with a light diffusion coating so that the end cap 3 is firmly fixed to the tube 1.

  In the present invention, the light emitted from the light source may be processed using the above-mentioned diffusion film, reflection film or other type of diffusion layer sheet, adhesive film, or any combination thereof.

  Referring again to FIG. 2, the LED straight tube lamp according to the embodiment of the present invention further includes an adhesive sheet 4, an insulating adhesive sheet 7, and an optical adhesive sheet 8. The LED lighting strip 2 is fixed to the inner peripheral surface of the tube 1 by the adhesive sheet 4. The adhesive sheet 4 may be a silicone adhesive, but is not limited thereto. The adhesive sheet 4 may take the form of a plurality of short pieces or a long piece. Various kinds of adhesive sheet 4, insulating adhesive sheet 7, and optical adhesive sheet 8 can be combined to constitute various embodiments of the present invention.

  The insulating adhesive sheet 7 coats the surface of the LED lighting strip 2 facing the LED light source 202 so as to electrically insulate the LED lighting strip 2 from the external environment by not exposing the LED lighting strip 2. In attaching the insulating pressure-sensitive adhesive sheet 7, a plurality of through holes 71 are provided in the insulating pressure-sensitive adhesive sheet 7 to accommodate the LED light sources 202, and the LED light sources 202 enter the through holes 71. The material composition of the insulating adhesive sheet 7 includes vinyl silicone, hydrogen polysiloxane, and aluminum oxide. The thickness of the insulating adhesive sheet 7 ranges from about 100 μm to about 140 μm (micrometer). When the thickness is less than 100 μm, the insulating adhesive sheet 7 does not usually exhibit a sufficient insulating effect, and when the thickness exceeds 140 μm, the raw material is wasted.

  The optical pressure-sensitive adhesive sheet 8 is made of a transparent or transparent material, and is adhered or coated on the surface of the LED light source 202 to secure an optimal light transmittance. The optical pressure-sensitive adhesive sheet 8 after being attached to the LED light source 202 may be in a granular shape, a strip shape, or a sheet shape. The performance of the optical pressure-sensitive adhesive sheet 8 depends on its refractive index and thickness. In some embodiments, the refractive index of the optical adhesive sheet 8 is in a range from 1.22 to 1.6. In some embodiments, the refractive index of the optical adhesive sheet 8 is ± 15% of the square root of the refractive index of the housing or case of the LED light source 202 or the square root of the refractive index of the housing or case of the LED light source 202. , Resulting in better light transmittance. The housing / case of the LED light source 202 is a structure for housing and holding the LED die (or chip), for example, an LED lead frame 202b as shown in FIG. The refractive index of the optical pressure-sensitive adhesive sheet 8 may be in the range of 1.225 to 1.253. In some embodiments, the thickness of the optical adhesive sheet 8 may be in a range from 1.1 mm to 1.3 mm. If the thickness of the optical adhesive sheet 8 is less than 1.1 mm, it cannot cover the LED light source 202. If the thickness is more than 1.3 mm, the light transmittance is reduced and the material cost is increased.

  In the process of assembling the LED light source to the LED illumination strip, first, the optical adhesive sheet 8 is attached to the LED light source 202. Next, one surface of the LED lighting strip 2 is coated with the insulating adhesive sheet 7. Next, the LED light source 202 is fixed or fitted into the LED illumination strip 2. An adhesive is adhered to the inner surface of the tube 1 on the surface of the LED lighting strip 2 opposite to the surface on which the LED light source 202 is mounted. Finally, the end cap 3 is fixed to the end of the tube 1. The LED light source 202 and the power supply 5 are electrically connected by the LED lighting strip 2. As shown in FIG. 22, the flexible circuit sheet 2 passes through the crossover portion 103 and is joined to the power source 5 by soldering or conventional wire bonding. Next, the end cap 3 having a structure as shown in FIG. 3, FIG. 4, or FIG. 6 is bonded to the reinforced crossover portion 103 by a method as shown in FIG. The tube lamp is completed.

  In the present embodiment, the LED illumination strip 2 is fixed to the inner peripheral surface of the tube 1 by the adhesive sheet 4 to widen the illumination angle of the LED straight tube lamp, and widen the light distribution angle to more than 330 degrees. By sticking the insulating pressure-sensitive adhesive sheet 7 and the optical pressure-sensitive adhesive sheet 8, even when the tubular body 1 is damaged, the entire lighting strip 2 is electrically insulated so that electric shock does not occur, and safety is enhanced. .

  Further, an inner peripheral surface or an outer peripheral surface of the glass tube 1 has an adhesive film (not shown) to isolate the inside from the outside of the glass tube 1 even when the glass tube 1 is broken. May be coated or coated with. In the present embodiment, the adhesive film covers the inner peripheral surface of the tube 1. Materials for the adhesive film to be coated include methyl vinyl silicone oil, hydrogen silicone oil, xylene, and calcium carbonate, of which xylene is an auxiliary material. When the adhesive film covering the inner surface of the tube 1 hardens, xylene volatilizes and disappears. Xylene is mainly used to adjust the adhesive strength, and controls the thickness of the adhesive film used for coating.

  In one embodiment, the thickness of the adhesive film used for the coating ranges from about 100 to about 140 micrometers (μm) in some embodiments. Adhesive films with a thickness less than 100 micrometers may not have sufficient shatterproof capability against the glass tube, and thus the glass tube is prone to cracking and shattering. For adhesive films thicker than 140 micrometers, light transmission is reduced and material costs are increased. If the requirements for shatterproof capability and light transmittance are not stringent, the thickness of the adhesive film used for coating may range from about 10 to about 800 micrometers (μm).

  In the present embodiment, the inner surface or the outer surface of the glass tube 1 is covered with the adhesive film so that the fragments adhere to the adhesive film when the glass tube is broken. Therefore, since a through-hole for communicating between the inside and the outside of the tube 1 is not opened in the tube 1, the user is prevented from touching a charged object inside the tube 1 to receive an electric shock. Further, the adhesive film can diffuse the light and transmit the light so as to increase the uniformity of the light and the light transmittance of the entire LED straight tube lamp. The adhesive film, the adhesive sheet 4, the insulating adhesive sheet 7 and the optical adhesive sheet 8 can be combined to constitute various embodiments of the present invention. Since the LED lighting strip 2 is configured to be a flexible circuit sheet, an adhesive film used for coating is not required.

  Further, the LED lighting strip 2 may be a rectangular aluminum plate, a FR4 board, or a flexible circuit sheet. When the tube 1 is made of glass and employs a rigid aluminum plate or FR4 board, if the tube breaks, it breaks into two pieces, for example, but keeps the straight tube shape. It gives the false impression that the straight tube lamp is still usable and fully functional, and is prone to electric shock to the user when handling or installing the ED straight tube lamp. The flexibility and flexibility of the flexible board for the LED strip 2 adds to the problems faced by aluminum plates, FR4 boards, or conventional three-layer flexible boards with insufficient flexibility. Will be dealt with. In one particular embodiment, a flexible circuit sheet is employed as the LED lighting strip 2, so that the LED lighting strip 2 does not maintain a straight tube shape even if the tube ruptures or breaks, and the LED straight line does not. The user is immediately aware that the tube lamp is unusable, and possible electrical shock is avoided. Next, a further description of the flexible circuit sheet used as the LED lighting strip 2 will be given.

  Referring to FIG. 23, in one embodiment, the LED lighting strip 2 includes a flexible circuit sheet having a stacked conductive wiring layer 2a and a dielectric layer 2b, and the wiring layer 2a and the dielectric layer 2b has the same area. The LED light source 202 is disposed on one surface of the wiring layer 2a, and the dielectric layer 2b is disposed on another surface of the wiring layer 2a farther from the LED light source 202. The wiring layer 2a is electrically connected to the power supply 5 and carries a direct current (DC) signal. On the other hand, the surface of the dielectric layer 2b on the side remote from the wiring layer 2a is fixed to the inner peripheral surface of the tube 1 using the adhesive sheet 4. The wiring layer 2a may be a metal layer including a wiring such as a copper wire or a power supply layer.

  In another embodiment, the outer surface of the wiring layer 2a or the dielectric layer 2b may be covered with a circuit protection layer made of ink that has solder resistance and has a function of increasing reflectivity. Alternatively, the dielectric layer may be omitted, the wiring layer may be directly adhered to the inner peripheral surface of the tube, and the outer surface of the wiring layer 2a may be covered with the circuit protection layer. Regardless of whether the wiring layer 2a has a one-layer structure or a two-layer structure, a circuit protective material may be used. The circuit protection material may be arranged on only one surface / surface of the LED lighting strip 2, such as the surface on which the LED light source 202 is located. In some embodiments, the flexible circuit sheet has a one-layer structure including only one wiring layer 2a or a two-layer structure including one wiring layer 2a and one dielectric layer 2b. As compared with a conventional flexible substrate having a three-layer structure (one dielectric layer sandwiched between two wiring layers), it is more flexible or flexibly bent. As a result, the flexible circuit sheet of the LED lighting strip 2 can also be installed on a tube in a customized or non-tubular shape and can be properly attached to the inner surface of the tube. A flexible circuit sheet that is securely attached to the inner surface of the tube may be preferred. In addition, using a flexible circuit sheet with fewer layers improves heat dissipation and reduces material costs.

  However, the flexible circuit sheet is not limited to one or two layers. In another embodiment, the flexible circuit sheet may include a plurality of wiring layers 2a and a plurality of dielectric layers 2b, in which case the dielectric layers 2b and the wiring layers 2a are continuously and alternately arranged. It is laminated. These layers are laminated on the outermost side and on the side opposite to the surface of the wiring layer 2 a on which the LED light sources 202 are arranged, and are electrically connected to the power supply 5. Further, the flexible circuit sheet is longer than the tube.

  Referring to FIG. 48, in one embodiment, the LED lighting strip 2 includes a flexible circuit sheet in which a first wiring layer 2a, a dielectric layer 2b, and a second wiring layer 2c are stacked in this order. The second wiring layer 2c is thicker than the first wiring layer 2a, and the LED illumination strip 2 is longer than the tube 1. The end of the LED illumination strip 2 extends beyond the end of the tube 1, the light source 202 is not disposed, and the two ends for electrically connecting to the first wiring layer 2a and the second wiring layer 2c, respectively. Two individual through holes 203 and 204 are formed. In order to prevent a short circuit from occurring, the through holes 203 and 204 are not connected.

  This allows the second wiring layer 2c to be thicker, thereby supporting the first wiring layer 2a and the dielectric layer 2b by the second wiring layer, while preventing the LED from being easily displaced or deformed. The illumination strip 2 can be mounted on the inner peripheral surface, and the product yield can be improved. Furthermore, since the first wiring layer 2a and the second wiring layer 2c are electrically connected, the circuit layout of the first wiring layer is extended to the downstream second wiring layer, and the circuit of the LED lighting strip 2c is extended. Covers the entire layout. Furthermore, since the area for the circuit layout is two layers, the area of each layer, and therefore the width of the LED lighting strip 2 can be reduced, so that more LED lighting strips 2 are added to the production line. Loading can increase productivity.

  Furthermore, the first wiring layer 2a and the second wiring layer 2c at the end of the LED lighting strip 2 that extend beyond the end of the tube 1 and in which the light source 202 is not arranged are arranged in the circuit layout of the power supply module. Because it can be used, the power supply module can be placed directly on the flexible circuit sheet of the LED strip 2.

  Referring to FIG. 2, in one embodiment, the LED lighting strip 2 has a number of LED light sources 202 mounted thereon, and the end cap 3 has a power supply 5 installed therein. The LED light source 202 and the power supply 5 are electrically connected by the LED illumination strip 2. The power supply 5 may be a single integrated unit installed on one end cap 3 (that is, all power supply components are integrated into one module unit). Alternatively, the power supply 5 may be divided into two separate units (that is, all power supply components are divided into two), and each unit may be divided into two end caps 3 and installed. If only one end of the tube 1 is strengthened by the glass strengthening process, the power supply 5 is a single integrated unit, installed in the end cap 3 corresponding to the reinforced end of the tube 1. Is preferred.

  The power supply 5 can be created by various methods. For example, the power supply 5 may be an encapsulant molded by silica gel injection molding having a high thermal conductivity of greater than 0.7 W / (m · K). This type of power supply has the advantages of high electrical insulation, high heat dissipation, and a constant shape that is compatible with other components in the assembly. Alternatively, the power supply 5 in the end cap may be a printed circuit board having components directly exposed or packaged by a conventional heat shrink sleeve. In some embodiments of the present invention, power supply 5 may be a power supply module as shown in FIG. 23 or a single printed circuit board with a single integrated unit as shown in FIG. .

  Referring to FIGS. 2 and 38, in one embodiment of the present invention, the power supply 5 includes a male plug 51 at one end and a metal pin 52 at the other end, and the LED lighting strip 2 is correspondingly provided. One end is provided with a female plug 201, and the end cap 3 is provided with a hollow conductive pin 301 for connecting to an external power supply. Specifically, the male plug 51 is inserted in accordance with the female plug 201 of the LED lighting strip 2, and the metal pin 52 is inserted in accordance with the hollow conductive pin 301 of the end cap 3. The male plug 51 and the female plug 201 function as connectors between the power supply 5 and the LED lighting strip 2. When the metal pin 502 is inserted, the hollow conductive pin 301 is driven by an external punching tool and slightly deforms so that the metal pin 502 of the power supply 5 is fixed and electrically connected to the hollow conductive pin 301. When the power is turned on, the current passes through the hollow conductive pin 301, the metal pin 502, the male plug 51, and the female plug 201 in order, reaches the LED illumination strip 2, and goes to the LED light source 202. However, the power supply 5 of the present invention is not limited to the modular type as shown in FIG. The power supply 5 may be a printed circuit board provided with a power supply module, and is electrically connected to the LED lighting strip 2 via the above-described pair of the male plug 51 and the female plug 201.

  In another embodiment, instead of the male plug 51 and the female plug 201, any type of power supply 5 and illumination strip 2 can be connected using conventional wire bonding techniques. Further, the wire may be wrapped in an electrically insulating tube to protect the user from electric shock. However, the bonded wires are fragile during transportation, which can cause quality problems.

  In still other embodiments, the electrical connection between the power supply 5 and the LED lighting strip 2 may be performed by tin soldering, riveting, or welding. One method of fixing the LED lighting strip 2 is to attach 4 to an adhesive sheet on one surface of the LED lighting strip 2 and attach the LED lighting strip 2 to the inner surface of the tube 1 with the adhesive sheet 4. It is. Both ends of the LED lighting strip 2 can be fixed to the inner surface of the tube 1 and can be removed.

  When the LED light strip 2 is fixed to the inner surface of the tube 1, the flexible circuit sheet of the LED light strip 2 has a female plug 201 to connect the LED light strip 2 and the power supply 5. Preferably, the power supply is provided with a male plug 51. In this case, the male plug 51 of the power supply 5 is inserted into the female plug 201 to establish an electrical connection.

  If both ends of the LED lighting strip 2 are removed from the inner surface of the tube and the LED lighting strip 2 is connected to the power supply 5 by wire bonding, any subsequent movement in transport will break the bonded wires. Easy to make. Therefore, a preferred option for the connection between the lighting strip 2 and the power supply 5 can be said to be soldering. Specifically, referring to FIG. 22, both ends of the LED lighting strip 2 including the flexible circuit sheet are arranged so as to pass through the reinforced crossover portion 103 and be directly soldered to the output terminal of the power supply 5. As a result, the quality of the product is improved without using wires. By doing so, the female plug 201 and the male plug 51 provided in the LED illumination strip 2 and the power supply 5 are not required.

  Referring to FIG. 24, the output terminal of the printed circuit board of the power supply 5 may include a solder pad "a" to which an amount of tin solder has been applied that will be thick enough to form a solder joint later. Correspondingly, there may be a solder pad “b” at the end of the LED lighting strip 2. The solder pad “a” on the output terminal of the printed circuit board of the power supply 5 is joined to the solder pad “b” on the LED lighting strip 2 by tin solder on the solder pad “a”. The solder pads "a" and "b" may be directly opposed during bonding so that the LED lighting strip 2 and the printed circuit board of the power supply 5 are most securely connected. However, in this type of soldering, it is necessary to press the thermocompression head against the back surface of the LED lighting strip 2 to heat the tin solder, that is, to put the LED lighting strip 2 between the thermocompression head and the tin solder. As such, they are prone to reliability problems. Referring to FIG. 30, each of the solder pads “b” of the LED lighting strip 2 is penetrated so that the solder pad “b” on the LED lighting strip 2 covers the solder pad “a” even if it is not directly. A hole may be drilled, and when the solder pads "a" and "b" are vertically aligned, the thermocompression head is mounted on the surface of the printed circuit board of the power supply 5 with the tin solder on the solder pads "a". Pressed directly to. This is actually an easy way to finish.

  Referring again to FIG. 24, both ends of the LED lighting strip 2 removed from the inner surface of the tube 1 form free extending ends 21, but most of the LED lighting strips 2 are formed on the inner surface of the tube 1. Attached to and fixed. As described above, one of the free extending ends 21 has a solder pad “b”. In assembling the LED straight tube lamp, the free extending end 21 with the solder connection between the printed circuit board of the power supply 5 and the LED lighting strip 2 is rolled, rolled or deformed to form the tube 1 It is appropriately stored inside. The flexible circuit sheet of the LED lighting strip 2 includes a first wiring layer 2a, a dielectric layer 2b, and a second wiring layer 2c in this order, as shown in FIG. Reference numeral 21 denotes a connection between the first wiring layer 2a and the second wiring layer 2c, and is used for adjusting the circuit layout of the power supply 5.

  In this embodiment, during the connection between the LED lighting strip 2 and the power supply 5, the solder pad "b", the solder pad "a", and the LED light source 202 are on a surface facing in the same direction, and the LED lighting strip Each solder pad “b” on the piece 2 is provided with a through hole “e” as shown in FIG. 30 so that the solder pad “b” and the solder pad “a” pass through the through hole “e”. Communicate. The free extension end 21 is contracted or rounded and deformed, and the solder connection between the printed circuit board of the power supply 5 and the LED lighting strip 2 places a lateral tension on the power supply 5. Furthermore, in the solder connection between the printed circuit board of the power supply 5 and the LED lighting strip 2, compared to the situation where the solder pad “a” of the power supply 5 and the solder pad “b” of the LED lighting strip 2 face each other, 5, a downward tension is applied. This downward tension on the power supply 5 comes from the tin solder in the through-hole “e” and ensures a stronger electrical connection between the LED lighting strip 2 and the power supply 5.

Referring to FIG. 25, in one embodiment, the solder pad “b” of the LED lighting strip 2 is two separate pads that respectively connect to the positive and negative electrodes of the flexible circuit sheet of the LED lighting strip 2. is there. The size of the solder pad “b” is, for example, about 3.5 × 2 mm ² . Correspondingly, the printed circuit board of the power supply 5 has solder pads "a" with pre-tinned solder, and a typical height of tin solder suitable for the automatic soldering process is, for example, about 0.1 ０．７0.7 mm, in some embodiments 0.3-0.5 mm, and in a more preferred embodiment about 0.4 mm. An electrically insulating through hole "c" may be provided to insulate between the two solder pads "b" to prevent a short circuit between the two solder pads during soldering. Further, an additional positioning opening "d" may be provided behind the electrically insulating through-hole "c" so that the automatic soldering device can quickly recognize the position of the solder pad "b".

  For scalability and interchangeability, the number of solder pads "b" on each end of the LED lighting strip 2 may be more than one, for example, two, three, four, or more. If only one solder pad “b” is provided at each end of the LED lighting strip 2, both ends of the LED lighting strip 2 are electrically connected to the power supply 5 to form a circuit, The parts can be used. For example, a circuit element having capacitance may be replaced with an inductor for controlling current. Referring to FIGS. 26-28, if there are three solder pads at each end of the LED lighting strip 2, the third solder pad can be grounded. If there are four solder pads at each end of the LED lighting strip 2, the fourth solder pad can be used as a signal input terminal. Correspondingly, the power supply 5 comprises the same number of solder pads “a” as the solder pads “b” on the LED strip 2. As long as an electrical short between the solder pads "b" can be prevented, the solder pads "b" should be arranged according to the dimensions of the actual area for the arrangement, for example three solder pads in a row They may be arranged or arranged in two rows. In another embodiment, the number of solder pads “b” on the flexible circuit sheet of the LED lighting strip 2 is reduced by the rearrangement of the circuits on the flexible circuit sheet of the LED lighting strip 2. Is also good. The smaller the number of solder pads, the simpler the manufacturing process. On the other hand, the number of solder pads may be increased to improve and secure the electrical connection between the LED lighting strip 2 and the output terminal of the power supply 5.

  Referring to FIG. 30, in another embodiment, each of the solder pads "b" is provided with a through hole "e", typically having a diameter of about 1-2 mm, and in some embodiments having a diameter of about 1.2-1. 0.8 mm, and in yet another embodiment the diameter is about 1.5 mm. The through hole “e” is formed between the solder pad “a” and the solder pad “b” so that the tin solder of the solder pad “a” passes through the through hole “e” and finally reaches the solder pad “b”. Communication. When the through hole “e” is small, it is difficult to pass through the tin solder. As the tin solder passes through the through-hole, it accumulates around the through-hole "e" and condenses to form a solder ball "g" that is larger in diameter than the through-hole "e". Such a solder ball “g” functions as a rivet that further increases the stability of the electrical connection between the solder pad “a” on the power supply 5 and the solder pad “b” on the LED lighting strip 2. .

  Referring to FIGS. 31-32, in another embodiment, the distance from the through hole “e” to the side edge of the LED lighting strip 2 is less than 1 mm, and the tin solder penetrates through the through hole “e”. The excess tin solder may accumulate around the hole "e" and the excess tin solder will spill over the solder pad "b" and reflow along the side edges of the LED lighting strip 2 on the solder pad of the power supply 5 It may be connected to the tin solder “a”. Thereafter, the tin solder condenses to form a structure such as a rivet, and the LED lighting strip 2 is firmly fixed on the printed circuit board of the power supply 5. This results in a reliable electrical connection. Referring to FIG. 33 and FIG. 34, in another embodiment, a notch “f” formed at a side end of a solder pad may be used instead of the through hole “e”, and the tin solder is It easily passes through the notch “f” and accumulates around the notch “f” and condenses to form a solder ball larger in diameter than the notch “e”. Such solder balls may be formed like C-shaped rivets that enhance the safety performance of the electrically connected structure.

  The aforementioned through holes "e" or notches "f" may be formed prior to soldering, or may be formed by direct stamping by a thermocompression head during soldering, as shown in FIG. You may. The portion of the thermocompression head that contacts the tin solder may be flat, concave, or convex, or any combination thereof. The part of the thermocompression bonding head for holding the objects to be joined like the LED lighting strip 2 may be strip-shaped or grid-shaped. The portion of the thermocompression head that contacts the tin solder does not completely cover the through hole "e" or notch "f" to ensure that the tin solder can pass through the through hole "e" or notch "f" . The concave portion of the thermocompression bonding head may function as a space for receiving the solder ball.

  Referring to FIG. 40, the thermocompression bonding head 41 used for bonding the solder pad “a” on the power supply 5 and the solder pad “b” on the lighting strip 2 mainly includes a bonding surface 411, a plurality of concave guides. It comprises four parts: a tank 412, a plurality of concave molding tanks 413, and a holding surface 414. The bonding surface 411 is a portion which is actually brought into contact with the tin solder to perform solder joining, and is pressed and heated. Bonding surface 411 may be planar, concave, or convex, or any combination thereof. The concave guide tank 412 is formed on the bonding surface 411 and is opened near the edge of the bonding surface 411 so that the tin solder heated and melted in the through hole flows through the through hole and the notch formed in the solder pad. To guide. For example, guide tank 412 may function to guide and block molten tin solder. The concave molding tanks 413 are arranged near the guide tanks 412, and are concave portions deeper than the guide tanks 412, and each concave molding tank 413 forms a housing for receiving a solder ball. The pressing surface 414 is a portion adjacent to the bonding surface 411 and is formed together with the concave molding tank 413. The holding surface 414 is lower than the bonding surface 411 so that the holding surface 414 firmly holds the LED lighting strip 2 on the printed circuit board of the power supply 5 while the bonding surface 411 holds down the solder pad “b” during soldering. Hold down. The holding surface 414 may be strip-shaped or grid-shaped on the surface. The difference in height between the bonding surface 411 and the pressing surface 414 is the same as the thickness of the LED illumination strip 2.

  Referring to FIGS. 41, 25 and 40, the solder pads corresponding to the solder pads of the LED lighting strip are formed on the printed circuit board of the power supply 5 and the tin solder is soldered by a subsequent automatic soldering machine. Is placed in the form of solder pads on the printed circuit board of the power supply 5 in advance. In some embodiments, the thickness of the tin solder is about 0.3 to about 0.5 mm so that the LED lighting strip 2 can be securely bonded to the printed circuit board of the power supply 5. As shown in FIG. 41, when there is a difference in height between two tin solders respectively prepared on two solder pads on the printed circuit board of the power supply 5, the higher one is the thermocompression bonding head. The other comes into contact first and melts, and the other begins to melt after the higher melts and is at the same height. This usually leads to instability in the soldering of the lower reserve tin solder, thereby affecting the electrical connection between the LED lighting strip 2 and the printed circuit board of the power supply 5. In one embodiment, to solve this problem, the present invention applies an equilibrium dynamics principal. A link mechanism is installed in the thermocompression bonding head 41, and only when the thermocompression bonding head 41 detects that the pressures on the two spare tin solders are the same, heating and melting of the two spare tin solders are started. Thus, the thermocompression bonding head 41 is rotated during the soldering.

  In the embodiment described above, the thermocompression head 41 is rotatable while the LED lighting strip 2 and the printed circuit board of the power supply 5 do not move. Referring to FIG. 42, in another embodiment, the thermocompression head 41 does not move, while the LED lighting strip is rotatable. In this embodiment, the LED lighting strip 2 and the printed circuit board of the power supply 5 are mounted on a soldering vehicle 60 including a rotating platform 61, a vehicle holder 62, a rotating shaft 63, and two elastic members 64. The rotating platform 61 serves to carry the LED lighting strip 2 and the printed circuit board of the power supply 5. The rotary platform 61 is movably mounted to the vehicle holder 62 via a rotating shaft 63 so as to be rotatable with respect to the vehicle holder 62, while the vehicle holder 62 supports and holds the rotary platform 61. The two elastic members 64 are provided on both sides of the rotating shaft 63 so that the rotating platform 61 connected to the rotating shaft 63 is always horizontal when the rotating platform 61 is empty. In the present embodiment, the elastic member 64 is, for example, a spring, and its ends are arranged to correspond to both sides of the rotating shaft 63 so as to function as two pivots of the vehicle holder 62. As shown in FIG. 42, when the height of the two tin solders prepared for the LED lighting strip 2 to which the thermocompression bonding head 41 applies pressure is not the same, the printed circuit board of the LED lighting strip 2 and the power supply 5 is removed. The carrying rotary platform 61 is driven by the rotating shaft 63 and moves until the thermocompression head 41 detects the same pressure on the two tin solders before starting the solder joint. Referring to FIG. 43, when the rotary platform 61 rotates, the elastic members 64 on both sides of the rotating shaft 63 are compressed or pulled. When the soldering is completed, the rotary platform 61 is released from the driving force of the rotating shaft 63 and returns to its original height by the elastic force of the elastic member 64.

  In another embodiment, the rotating platform 61 may be designed to have a mechanism that does not use the rotating shaft 63 and the elastic member 64. For example, the rotating platform 61 may be designed with a drive motor and an active rotating mechanism, thereby omitting the vehicle holder 62. Therefore, any other embodiment utilizing the principles of equilibrium dynamics for driving the printed circuit board of the power supply 5 and the LED lighting strip 2 moving to complete the solder joint process is within the spirit of the invention. Is within.

  Referring to FIGS. 35 and 36, in another embodiment, the LED lighting strip 2 and the power supply 5 may be connected utilizing a circuit board assembly 25 instead of a solder joint. The circuit board assembly 25 includes a long circuit sheet 251 and a short circuit board 253. The long circuit sheet 251 and the short circuit board 253 are different from the short circuit board 253 on the side of the long circuit sheet 251. It is joined so as to be close to the end. The short circuit board 253 may include the power supply module 250 to form the power supply 5. The short circuit board 253 is harder or has higher rigidity than the long circuit sheet 251 and can support the power supply module 250.

  The long circuit sheet 251 may be a flexible circuit sheet of the LED lighting strip 2 including the wiring layer 2a as shown in FIG. The wiring layer 2a of the long circuit sheet 251 and the power supply module 250 can be electrically connected in various ways as required. As shown in FIG. 35, the power supply module 250 and the long circuit sheet 251 having the wiring layer 2a on the surface are connected to a short circuit so that the power supply module 250 is directly connected to the long circuit sheet 251. They are arranged on the same surface of the substrate 253. Alternatively, the power supply module 250 and the long circuit sheet 251 having the wiring layer 2a on the surface are such that the power supply module 250 is directly connected to the short circuit board 253, and the wiring layer 2a of the LED lighting strip 2 has a short connection. Are arranged on different surfaces of the short circuit board 253 so as to be indirectly connected via the circuit board 253 of the short circuit.

  As shown in FIG. 35, in one embodiment, a long circuit sheet 251 and a short circuit board 253 are joined to each other in an initial stage, and then the power supply module 250 plays the role of the LED lighting strip 2. To the wiring layer 2a of the long circuit sheet 251 to be formed. The long circuit sheet 251 of the LED lighting strip 2 is not limited to the one including the single wiring layer 2a, and may further include another wiring layer such as the wiring layer 2c as shown in FIG. The light source 202 is arranged on the wiring layer 2a of the LED lighting strip 2 and is electrically connected to the power supply 5 via the wiring layer 2a. As shown in FIG. 36, in another embodiment, the long circuit sheet 251 of the LED lighting strip 2 may include a wiring layer 2a and a dielectric layer 2b. First, the dielectric layer 2b may be joined to the short circuit board 253, and then the wiring layer 2a is joined to the dielectric layer 2b and extends to the short circuit board 253. All of these embodiments are within the scope of the inventive circuit board assembly concept.

  In the embodiments described above, the length of the short circuit board 253 may typically be about 15 mm to about 40 mm, and in some embodiments, may be 19 mm to 36 mm. On the other hand, the length of the long circuit sheet 251 may typically be between about 800 mm and about 2800 mm, and in some embodiments, between 1200 mm and 2400 mm. The ratio of the length of the short circuit board 253 to the length of the long circuit sheet 251 is, for example, in a range of about 1:20 to about 1: 200.

  If the LED lighting strip 2 is not fixed to the inner surface of the tube 1, the connection between the LED lighting strip 2 and the power supply 5 via a solder joint cannot support the power supply 5 firmly. As a result, the power supply 5 may need to be located inside the end cap 3. For example, a longer end cap with sufficient space to receive power supply 5 would be needed. However, this may reduce the length of the tube under the premise that the total length of the LED straight tube lamp is fixed according to the product standard, and thus the effective illumination area may be reduced.

  Referring to FIG. 39, in one embodiment, a rigid circuit board 22 made of aluminum is used instead of a flexible circuit sheet, and the ends or terminals of the rigid circuit board 22 may be attached to both ends of the tube 1. I can do it. The power supply 5 is soldered to one end or terminal of the circuit board 22. In this solder joint, the printed circuit board of the power supply 5 may be joined vertically, rather than parallel, to the rigid circuit board 22 to create the necessary longitudinal space for the end cap. This solder joint technique is more convenient to implement and also maintains the effective lighting area of the LED straight tube lamp. Further, the conductive lead 53 for electrical connection with the end cap 3 is connected to the power supply 5 without soldering another metal wire between the power supply 5 and the hollow conductive pin 301 as shown in FIG. It may be formed directly. This makes the manufacture of LED straight tube lamps easier.

  Referring to FIG. 37, in one embodiment, each of the LED light sources 202 may include an LED lead frame 202b having a recess 202a and the LED chip 18 disposed in the recess 202a. The number of the concave portions 202a may be one or more than one. The concave portion 202a may cover the LED chip 18 and be filled with a phosphor for converting light emitted from the LED chip 18 into a desired light color. Compared to a conventional LED chip that is substantially square, the LED chip 18 in the present embodiment is rectangular, and the ratio of the dimension of the long side to the short side is usually about 2: 1 in some embodiments. 10: 1, and in some embodiments from about 2.5: 1 to about 5: 1, and in more preferred embodiments from 3: 1 to 4.5: 1. Further, in some embodiments, the LED chip 18 is arranged such that the long side direction is along the length direction of the tube 1, so that the average current density of the LED chip 18 increases and the tube 1 Are better shaped as a whole. The tube 1 may have a number of LED light sources 202 arranged in one or more columns, and each row of the LED light sources 202 is respectively arranged along the length direction (Y direction) of the tube 1. Is done.

  Referring again to FIG. 37, the concave portion 202a is surrounded by two parallel first side walls 15 and two parallel second side walls 16, and the first side wall 15 is lower in height than the second side wall 16. The two first side walls 15 are arranged at positions in the length direction (Y direction) of the tube 1 and are arranged so as to extend along the width direction (X direction) of the tube 1. The two second side walls 16 are arranged at positions in the width direction (X direction) of the tube 1 and are arranged so as to extend along the length direction (Y direction) of the tube 1. The extending direction of the first side wall 15 needs to be substantially parallel, if not exactly, to the width direction (X direction) of the tube body 1. In addition, the contour of the first side wall can take various shapes such as zigzag, curve, and wavy. Similarly, the extending direction of the second side wall 16 needs to be substantially parallel, if not exactly, to the length direction (Y direction) of the tube 1. In addition, the contour of the second side wall can take various shapes such as zigzag, curve, and wavy. In one row of the LED light sources 202, the arrangement of the first side wall 15 and the second side wall 16 of each LED light source 202 may be the same or different.

  By providing the first side wall 15 having a height lower than the second side wall 16 and being arranged at appropriate intervals, the LED lead frame 202b disperses the light distribution beyond the LED lead frame 202b, and in the Y direction. It does not cause a visually unpleasant sensation to those looking along the LED straight tube lamp. The first side wall 15 may be lower than the second side wall, but in this case, the graininess is weakened by arranging the rows of the LED light sources 202 closer to each other. On the other hand, when the user of the LED straight tube lamp looks at the tube along the X direction, the second side wall 16 can also block the line of sight of the user looking at the LED light source 202, reducing the unpleasant graininess. .

  Referring again to FIG. 37, the first side walls 15 each have an inner side surface 15a facing outward of the concave portion 202a. Since the inner side surface 15a is formed to be a slope, the light distribution easily spreads beyond the first side wall 15. The slope that is the inner side surface 15a may be a flat surface, a warped surface, or a combination thereof. When the slope is flat, the slope of the inner side surface 15a ranges from about 30 degrees to about 60 degrees. Accordingly, the angle between the bottom surface of the recess 202a and the inner side surface 15a may range from about 120 to about 150 degrees. In some embodiments, the slope of the inner surface 15a ranges from about 15 degrees to about 75 degrees, and the angle between the bottom surface of the recess 202a and the inner surface 15a ranges from about 105 degrees to about 165 degrees. is there.

  The LED light sources 202 may be arranged in one or more rows in the length direction (Y direction) of the tube 1. In the case of one row, in one embodiment, the second side walls 16 of the LED lead frames 202b of all the LED light sources 202 in the same row are arranged on the same straight line, so that two LED light sources 202 obstruct the line of sight of the user. Make each wall. In the case of a plurality of rows, in one embodiment, the LED lead frames 202b of the LED light sources 202 in the outermost two rows are arranged on the same straight line to block two walls obstructing the line of sight of the user viewing the LED light sources 202. Make each. The LED lead frames 202b of the LED light sources 202 arranged in other rows can be arranged in a different arrangement. As far as the LED light source 202 in the middle column (third row) is concerned, its LED lead frame 202b can be arranged as follows. For example, the first side walls 15 of each LED lead frame 202b may be arranged in the length direction (Y direction) of the tube 1, and the second side walls 16 may be arranged in the width direction of the tube 1 (X direction). . Also, the first side walls 15 of each LED lead frame 202b may be arranged in the width direction (X direction) of the tube 1, and the second side walls 16 may be arranged in the length direction (Y direction) of the tube 1. . Further, the LED lead frames 202b may be arranged so as to be shifted from each other. In order to reduce the granularity generated by the LED light source 202 when the user of the LED straight tube lamp views the tube from the X direction, the second side wall 16 is provided on the LED lead frame 202b of the LED light source 202 in the outermost row. If there is, it may be enough to block the user's line of sight looking at the LED light source 202. Other arrangements may be applied to the second side wall 16 of one or several LED lead frames 202b of the two outermost rows of LED light sources 202.

  In summary, when the plurality of LED light sources 202 are arranged in a single row extending in the length direction of the tube 1, the same row is used to form a wall for blocking a line of sight of a user viewing the LED light source 202. , The second side walls 16 of the LED lead frames 202b of all the LED light sources 202 may be arranged on the same straight line. When the plurality of LED light sources 202 are arranged in a plurality of rows extending in the length direction of the tube body 1 and arranged in the width direction, two walls for blocking a line of sight of a user who views the LED light sources 202 are formed. To this end, the second side walls 16 of the LED lead frames 202b of all the LED light sources 202 in the outermost row may be arranged on the same straight line. In one or more rows between the outermost rows, the first and second sidewalls 15 and 16 may be arranged the same as or differently than the outermost row.

  LED straight tube lamps according to various different embodiments of the present invention are described above. Regarding the whole LED straight tube lamp, the features are "having a reinforced end", "a flexible circuit sheet is used as an LED lighting strip", and "adhesive film on the inner surface of the tube". To cover the inner surface of the tube with a diffuser film, to cover the LED light source with a sheet-like diffuser film above, and to reflect the inner surface of the tube with a reflective film. "Coating", "end cap including heat conducting member", "end cap including magnetic metal member", "LED light source with lead frame", and "circuit board to connect LED lighting strip and power supply" Utilizing an assembly ", and these features may actually be applied alone or integrally, such that only one, or many at the same time, is implemented.

  In addition, among the features, "having structurally reinforced ends", "the flexible circuit sheet is used as the LED lighting strip", and "the inner surface of the tube is covered with an adhesive film." "," Covering the inner surface of the tube with a diffusion film "," covering the LED light source with a sheet-like diffusion film above "," covering the inner surface of the tube with a reflective film ", Utilizing a circuit board assembly to connect an end cap including a heat conducting member, an end cap including a magnetic metal member, an LED light source with a lead frame, and a power supply to an LED lighting strip. Includes any related technical points, modifications, and any combination thereof described in the above embodiments of the present invention.

  By way of example, the feature "having a structurally reinforced end" is characterized in that the tube includes a main body, a plurality of rear ends, and a crossover connecting the main body and the rear end. Both ends of the tube have an arc-shaped cross section in the axial direction of the tubular body, and end caps are respectively covered on the rear ends. At least one outer diameter of the rear end is smaller than the outer diameter of the main body. The outer diameter of the cap is the same as the outer diameter of the main body. "

As an example, the feature that "the flexible circuit sheet is used as the LED lighting strip" is characterized by the fact that "the connection between the flexible circuit sheet and the power supply is made by wire bonding or solder bonding, The circuit sheet includes a laminated wiring layer and a dielectric layer, and the flexible circuit sheet has a circuit protection layer made of light-reflecting ink, and a circumferential direction of the tube to function as a reflection film. Having an extended portion along the line. "
As an example, the feature that "the inner surface of the tube is coated with an adhesive film" is characterized by "the composition of the diffusion film includes calcium carbonate, calcium halophosphate, and aluminum oxide, or any combination thereof, It may further include a thickener and a ceramic activated carbon, and the diffusion film may be a sheet covering the LED light source. "

  As an example, the feature of "coating the inner surface of the tube with a reflective film" includes the feature that "the LED light source is disposed in the opening of the reflective film or near the reflective film so as to emerge above the reflective film." May be included.

  As an example, the feature of "the end cap including the heat conductive member" includes a feature that "the end cap is an electrically insulating tube, and a part or all of the hot melt adhesive has an inner surface of the heat conductive member and an outer surface of the tube body. Filling the intervening receiving space ". The feature of "the end cap including the magnetic metal member" is that "the magnetic metal member is annular or non-annular, so as to reduce the contact area between the inner surface of the electrically insulating tube and the outer surface of the magnetic metal member. And supporting portions and protrusions for supporting the magnetic metal member or reducing the contact area between the electrically insulating tube and the magnetic metal member. " .

  As an example, the feature "LED light source with lead frame" is characterized in that "the lead frame has a recess for receiving the LED chip, the recess is surrounded by a first side wall and a second side wall, and the first side wall is a second side wall. The height is lower than the side walls, the first side walls are arranged in the length direction of the tube, and the second side walls are arranged in the width direction of the tube. "

  As an example, the feature "utilizing a circuit board assembly to connect an LED lighting strip to a power supply" is characterized by "a circuit board assembly having a long circuit sheet and a short circuit board, The short circuit board is joined to the short circuit board so that the short circuit board is close to the side end of the long circuit sheet, the short circuit board has a power supply module and forms a power supply, and the short circuit board is Harder than a long circuit sheet. "

  The above features of the invention may be implemented in any combination to improve LED straight tube lamps, and the above embodiments are described for illustrative purposes only. The present invention is not limited to the description of the present specification, and many modifications are possible without departing from the spirit of the present invention and the scope defined by the appended claims.

Claims (28)

A lamp tube,
An LED lighting strip disposed in the lamp tube and having at least one LED light source mounted on its surface;
A plurality of openings for radiating heat are formed, and an end cap attached over one end of the lamp tube;
A power supply disposed in the end cap and electrically connected to the LED light source via the LED illumination strip,
A hot-melt adhesive is disposed between the end cap and the lamp tube, and the end cap is bonded and bonded to the lamp tube via the hot-melt adhesive. The LED straight tube lamp according to claim 1, wherein the power supply includes a circuit board and a power supply module attached to the circuit board. The LED straight tube lamp according to claim 1, wherein the end cap is provided with a socket for attaching the power supply. The end cap includes an electric insulating tube, and a heat conductive member fixedly disposed on an outer peripheral surface of the electric insulating tube, and the electric insulating tube of the end cap extends along an axial direction of the lamp tube. The lamp tube includes a first tubular portion and a second tubular portion to be connected, the lamp tube includes a main body portion, and two rear end portions respectively formed at both ends of the main body portion. A transition portion between the main body portion and the rear end portion is formed, and the hot melt adhesive is accommodated between an inner surface of the heat conducting member, an outer surface of the rear end portion, and an outer surface of the transition portion. The LED straight tube lamp according to claim 1, wherein a housing space for the LED is formed. The LED straight tube lamp according to claim 4, wherein the hot melt adhesive contains a predetermined ratio of a highly magnetically permeable powder. The LED straight tube lamp according to claim 1, wherein the plurality of openings are arc-shaped. The LED straight tube lamp according to claim 6, wherein the plurality of openings have three arc shapes having different sizes. The LED straight tube lamp according to claim 7, wherein the plurality of openings have three arc shapes whose sizes gradually change. The lamp tube includes a main body, and two rear ends formed respectively at both ends of the main body. The end cap includes an electrically insulating tube so as to cover one end of the lamp tube, and includes a magnetic metal. The member is disposed on the inner peripheral surface of the electric insulating tube such that at least a part of the magnetic metal member is disposed between the inner peripheral surface of the electric insulating tube and one end of the lamp tube. 2. The LED straight tube lamp according to 1. A lamp tube,
An LED lighting strip disposed in the lamp tube and having at least one LED light source mounted on its surface;
An end cap attached over one end of the lamp tube;
A power supply disposed in the end cap and electrically connected to the LED light source via the LED illumination strip,
The LED lighting strip includes a flexible circuit sheet having a first wiring layer, a dielectric layer, and a second wiring layer, and the LED light source communicates with the power supply via the first wiring layer. An LED straight tube lamp attached to the first wiring layer so as to enable electrical connection. The LED straight tube lamp according to claim 10, wherein the dielectric layer is located between the first wiring layer and the second wiring layer. The LED straight tube lamp according to claim 10, wherein the flexible circuit sheet further includes a circuit protection layer, and the first wiring layer is covered with the circuit protection layer. The LED straight tube lamp according to claim 10, wherein the flexible circuit sheet is longer than the lamp tube. 14. The LED straight tube lamp according to claim 13, wherein the flexible circuit sheet is directly soldered to the power supply. The LED straight tube lamp according to claim 10, wherein the second wiring layer is thicker than the first wiring layer. An LED lighting strip for an LED straight tube lamp,
An LED lighting strip including a flexible circuit sheet in which a first wiring layer, a dielectric layer, and a second wiring layer are sequentially stacked. The LED lighting strip according to claim 16, wherein the second wiring layer is thicker than the first wiring layer. The LED lighting strip according to claim 16, further comprising a circuit protection layer, wherein the first wiring layer is covered with the circuit protection layer. A lamp tube,
An LED lighting strip disposed in the lamp tube and having at least one LED light source mounted on its surface;
An end cap attached over one end of the lamp tube;
A power supply disposed in the end cap and electrically connected to the LED light source via the LED illumination strip,
The LED lighting strip is provided with a flexible circuit sheet having free extending ends at both ends, and the free extending ends are directly soldered to the power source. 20. The LED straight tube lamp according to claim 19, wherein both ends of the flexible circuit sheet extend beyond both ends of the lamp tube. 20. The LED straight tube lamp according to claim 19, wherein the free extension end is rounded, rolled, or deformed to fit within the lamp tube. The LED straight tube lamp according to claim 19, wherein the flexible circuit sheet is longer than the lamp tube. The LED straight tube lamp according to claim 19, wherein a plurality of openings for radiating heat are formed in the end cap. The LED straight tube lamp according to claim 23, wherein the plurality of openings have an arc shape. The LED straight tube lamp according to claim 24, wherein the plurality of openings have three arc shapes having different sizes. The LED lighting strip has a plurality of solder pads, an output terminal of the power supply printed circuit board has a plurality of solder pads, a plurality of solder pads of the output terminal of the power supply printed circuit board, The LED straight tube lamp according to claim 19, wherein the LED lighting strip is soldered to a plurality of solder pads. The LED straight tube according to claim 26, wherein the plurality of solder pads of the LED lighting strip are two separate pads, and an electrically insulating through hole is formed between the two solder pads of the LED lighting strip. lamp. A through-hole is formed in each of the plurality of solder pads of the LED lighting strip, and tin solder on the plurality of solder pads of the output terminal of the printed circuit board of the power supply penetrates the through-hole and the through-hole. 28. The LED straight tube lamp according to claim 27, wherein the LED lamp is deposited around the through hole at a position where the solder ball is removed and aggregates to form a solder ball.

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