JP6483828B2 - LED lamp - Google Patents

Description

  The present invention relates to an LED lamp, and more particularly to an LED lamp having a heat dissipation structure that maximizes air convection regardless of the installation posture.

  Recently, various types of LED lamps have been developed that can replace discharge lamps such as compact fluorescent lamps, mercury lamps, and metal halide lamps.

  Conventional LED lamps have a heat sink around the board on which the LEDs are mounted to release the heat generated during light emission, but most use a single heat sink to improve light efficiency and service life. There is a limit to extending

  In addition, when the size of the heat sink is increased in order to improve the heat dissipation performance of the LED lamp, there is a disadvantage that the weight of the LED lamp increases and the manufacturing cost increases.

  In particular, as described above, the conventional LED lamp includes a heat sink around the substrate on which the LED is mounted, for example, mainly on the back surface of the substrate. Therefore, heat generated on the substrate through the heat sink is smoothly moved upward by convection. There is a disadvantage that the direction of light irradiation is limited to be directed to the ground.

Korean Patent No. 10-0968270

  The present invention is for solving the above-mentioned conventional problems, and an object of the present invention is to provide a rod-shaped LED tube to which a heat sink is coupled, and radially radiate pins on the outer peripheral edge of the hollow cylindrical body. Are arranged in a pillar shape of a thread frame that winds the cocoon yarn while forming a heat radiation gap at a predetermined interval by being coupled to each heat radiation pin of the central heat sink that is projected, The length of the LED tube is limited to be smaller than the length of the LED tube, and through the heat dissipation gap inside the LED lamp, a space that is opened in all directions and smoothes air convection is ensured. The object is to provide an LED lamp having a heat dissipation structure that maximizes air convection.

  Another object of the present invention is that a lower substrate on which a plurality of LEDs are mounted is coupled to the lower part of the LED tube and irradiates light in all remaining directions except for the base terminal side coupled to the lamp socket. An LED lamp having a light distribution characteristic (for example, a beam angle of 240 ° or more) is provided.

  Another object of the present invention is to connect the LED tube and the inside of a converter housing that accommodates an AC-DC converter that generates a driving power source for the LED mounted on the lower substrate, and is connected to the converter housing, and is connected to the end of the lamp. To provide an LED lamp in which a base housing to which a base terminal coupled to a socket is fastened is completely filled with heat-dissipating silicone.

In order to achieve the object of the present invention as described above, an LED lamp according to the present invention is made of a heat conductive plastic (for example, polycarbonate), and is a bar on which a plurality of LEDs arranged along the length are mounted. A large number of rod-shaped LED tubes in which a substrate is accommodated and a rod heat sink are coupled, and a plurality of heat radiation pins project radially from the outer peripheral edge of the hollow cylindrical body, and each LED tube is attached to each heat radiation pin. It is arranged and fixed in the shape of a pillar of a thread frame that winds a kite thread while forming a heat radiation gap at a predetermined interval by coupling, and the length thereof is limited to be smaller than the length of the LED tube, is open in all directions inside the LED lamp through the plurality of heat radiating gaps, to form a heat dissipation structure to secure a space to facilitate air convection, wherein the plurality of LED Chu There a central heat sink to discharge heat generated during light emission, and the upper substrate for supplying power is connected to the upper portion of the plurality of LED tubes, attached to the upper substrate, the plurality of LED tubes occurs during light emission an upper heat sink to discharge heat generated by the heat and the converter housing, attached to a lower portion of the plurality of LED tubes, a plurality of LED heat and lower substrate on which the plurality of LED tubes occurs when light emission occurs during light emission A lower heat sink that emits heat and a heat conductive plastic (for example, polycarbonate) material, and are coupled to the lower heat sink to conduct heat generated by the plurality of LEDs on the lower substrate to emit light to the lower heat sink. A plate, a lower substrate fixed on the heat conducting plate and mounted with a plurality of LEDs, and a heat conducting plate. Stick (e.g., polycarbonate) is made, are sealed bonded by ultrasonic bonding method to the thermal conductive plate covers the lower substrate, the heat dissipation and waterproof and sealing treatment, a light having a plurality of LED of the lower substrate releases A lower substrate cover that diffuses, an AC-DC converter that generates driving power for the LEDs mounted on the plurality of LED tubes and the lower substrate is housed, and a converter housing that is coupled to the upper heat sink, and is coupled to the converter housing. A base housing to which a base terminal coupled to a lamp socket is fastened at the end, and the lower end of the LED tube has a convex surface, and a seal cap made of a thermally conductive plastic material is ultrasonically bonded By adhering with the method, heat dissipation and waterproofing and sealing treatment are performed before Part of the surface of the sealing cap, wherein the heat conducting plate is formed by the flat portion providing a space disposed.

In the LED lamp according to the present invention, the lower ends of the plurality of LED tubes are heat-dissipated, waterproofed and sealed by a seal cap, and the upper ends of the plurality of LED tubes are accommodated in a recess formed in the upper heat sink. Heat dissipation, waterproofing and sealing are performed by heat dissipation silicone filled in the recess.

  The LED lamp according to the present invention is characterized in that the inside of the converter housing and the inside of the base housing are completely filled with heat-dissipating silicone to be heat-dissipated, waterproofed and sealed.

The present invention, heat number of the plurality of LED of the plurality of LED tubes and the lower substrate occurs when the light-bar heat sink and the central heat sink, the upper heat sink, and the inner space in all directions of the LED lamp that is released through the lower heat sink Since the air convection is opened to be smooth, heat release can be maximized, and in particular, a heat dissipation structure in which the heat dissipation gap formed between the plurality of LED tubes and the inner space of the LED lamp communicate with each other. Therefore, heat release can be maximized regardless of the installation posture of the LED lamp.

The present invention, since a plurality of LED of the plurality of LED tubes and a lower substrate are either sealed process, excellent waterproof performance.

The perspective view of the LED lamp by this invention. The exploded perspective view of FIG. The disassembled perspective view of the LED tube assembly shown in FIG. Sectional drawing of the LED tube shown in FIG. The perspective view which shows the state by which the upper end of each board | substrate of LED tube etc. was welded to the upper board | substrate. The incision figure which shows the state with which the inside of the recessed part of the upper heat sink was filled with thermal radiation silicone. The incision figure which shows the state in which the inside of a converter housing and the inside of a base housing were completely filled with the thermal radiation silicone. 1st Embodiment which shows the use condition of the LED lamp by this invention. 2nd Embodiment which shows the use condition of the LED lamp by this invention. 3rd Embodiment which shows the use condition of the LED lamp by this invention.

  Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

  Referring to FIGS. 1 to 7, the LED lamp 100 according to the present invention includes a large number of rod-shaped LED tubes 110, a central heat sink 120, an upper substrate 130, an upper heat sink 140, and a lower heat sink. (150), a heat conductive plate (160), a lower substrate (170), a lower substrate cover (180), a converter housing (190), and a base housing (190a).

  In the LED lamp (100) according to the present invention, the power supply line drawn from the converter housing (190) includes the central heat sink (120), the upper substrate (130), the upper heat sink (140), the lower heat sink (150), A plurality of LED tubes (110) connected to the upper substrate (130) and the lower substrate (160) are connected to the upper substrate (130) and the lower substrate (170) through a heat conduction plate (160). 170) to supply driving power for a large number of LEDs.

  The LED tubes (110) and the like are made of a heat conductive plastic (for example, polycarbonate), accommodate a bar substrate (111) on which a plurality of LEDs arranged along the length are mounted, and a bar heat sink (112). ) Are combined.

  The LED tubes (110) and the like are provided with a reflection sheet (110a) that reflects and diffuses the light emitted from the LEDs on the inner surface.

  The LED tube (110) has a substrate groove (110b) for sandwiching and fixing the rod substrate (111) inside the back surface, and a heat sink for sandwiching and fixing the rod heat sink (112) outside the back surface. A groove (110c) is formed.

  The upper end of the bar substrate (111) is welded to the upper substrate (130) while being exposed on the upper surface of the upper substrate (130). When the upper end of the bar substrate (111) is exposed on the upper surface of the upper substrate (130), a thread frame for winding a kite thread along the upper surface of the upper substrate (130) in the process of assembling the LED lamp (100). Assembling of the LED tube (110) and the like arranged and fixed in a pillar shape is facilitated, and the assembly time can be shortened.

  The lower ends of the LED tubes (110) and the like have a convex surface, and a seal cap (110d) made of a thermally conductive plastic (for example, polycarbonate) material is bonded by an ultrasonic bonding method, thereby radiating and waterproofing. Sealed.

  Part of the surface of the seal cap (110d) is formed by a flat portion (110d-1) that provides a space in which the heat conductive plate (160) is disposed. When the flat part (110d-1) is formed, the lower heat sink (150) coupled to the lower end of the LED tube (110) to which the seal cap (110d) is bonded in the LED lamp (100) assembly process. When the heat conduction plate (160) is coupled to the flat surface (110d-1) of the seal cap (110d), the heat conduction plate (160) is prevented from being detached. The heat conducting plate (160) can be conveniently disposed and coupled to the lower heat sink (150).

  The bar heat sink (112) has protrusions (112a) sandwiched between heat sink grooves (110c) formed outside the back surface of the LED tube (110) on both side surfaces. A cylindrical ventilation groove (112b) having one side opened at the center is formed, and a heat dissipation pin (121) of the central heat sink (120) is sandwiched and fixed in the ventilation groove (112b), and the upper heat sink ( 140) and the lower heat sink (150) are screwed together.

  The central heat sink (120) is formed with radial pins (121) projecting radially from the outer peripheral edge of a hollow cylindrical body, and the end of the heat sink pin (121) is a vent groove of the rod heat sink (112) ( 112b) and fixed.

  The central heat sink (120) is connected to each heat radiating pin (121) by the LED tube (110) to form a heat radiating gap at a predetermined interval, and a thread pillar (pillar) for winding a cocoon thread. ) Arranged and fixed in shape, limiting its length to be smaller than the length of the LED tube (110) and the like, and being opened in all directions through the heat dissipation gap inside the LED lamp (100), A heat dissipation structure that secures a space for smooth air convection is formed, and the LED tube (110) and the like release heat generated during light emission.

  In order to form a heat dissipation structure that secures a sufficient space inside the LED lamp (100), the length of the central heat sink (120) is 1/5 to 3/5 of the length of the LED tube (110). It is more desirable to be limited to the length range.

  When the length of the central heat sink (120) is less than 1/5 of the length of the LED tube (110), the LED tube fixed to each heat dissipation pin (121) of the central heat sink (120) (110) et al. Cannot be fully supported.

  When the length of the central heat sink (120) is more than 3/5 of the length of the LED tube (110), the LED tube fixed to each heat dissipation pin (121) of the central heat sink (120) (110) and the like can be sufficiently supported, but the space formed inside the LED lamp (100) does not facilitate air convection.

  The upper substrate (130) is connected to the upper portion of the LED tube (110) to supply power, and as described above, a power supply line is connected to supply driving power to the LED tube (110). To do.

  The upper heat sink 140 is coupled to the upper substrate 130 to release heat generated by the LED tubes 110 during light emission and heat generated from the converter housing 190.

  The upper heat sink (140) has a central through hole (141) formed therein, and a ventilation groove (112b) formed in a cylindrical shape with one side open to the center along the length of the bar heat sink (112). Screw bosses (142) and the like through which the screws fastened to) penetrate are formed at a predetermined interval along the edge of the central through hole (141).

  The upper heat sink (140) has upper ends of the upper substrate (130) and the LED tube (110) between the central through hole (141) and an edge of a side surface coupled to the upper substrate (130). A recess (143) is formed to be accommodated at a defined depth.

  In the upper heat sink (140), the inside of the recess (141) is completely filled with heat-dissipating silicone, and is heat-dissipated, waterproofed and sealed.

  The upper heat sink (140) has heat radiation pins (144) projecting from the opposite side of the upper heat sink (140) connected to the upper substrate (130).

  The lower heat sink (150) is coupled to the lower part of the LED tube (110) and the like, and heat generated when the LED tube (110) emits light and heat generated when the LEDs of the lower substrate (170) emit light. And release.

  The lower heat sink (150) has a central through hole (151) formed therein, and a ventilation groove (112b) formed in a cylindrical shape with one side opened to the center along the length of the bar heat sink (112). Screw holes (152) and the like through which screws to be fastened are formed at predetermined intervals along the edge.

  In the lower heat sink (150), heat radiation pins (153) and the like protrude from the side surfaces coupled to the LED tube (110) and the like.

  The lower heat sink (150) has a predetermined interval between a screw boss (154) and a screw to which a screw for connecting the heat conductive plate (160) is fastened to an opposite side surface connected to the LED tube (110). Is protruding.

  The heat conductive plate 160 is made of a heat conductive plastic (for example, polycarbonate), and is coupled to the lower heat sink 150 to generate heat generated by the LEDs of the lower substrate 170 during light emission. Conducted to (150).

  The lower substrate (170) is fixed on the heat conductive plate (160), and a plurality of LEDs are mounted thereon.

  The lower substrate cover (180) is made of a heat conductive plastic (for example, polycarbonate), and is bonded to the heat conductive plate (160) by an ultrasonic bonding method to cover the lower substrate (170). Heat dissipation, waterproofing and sealing treatment are performed to diffuse the light emitted from the LEDs on the lower substrate (170).

  The lower substrate cover (180) has a convex surface, and the concave portion (181) formed in the central portion prevents the light spot of each LED of the lower substrate (170) from being seen. The glare is prevented by focusing and diffusing the light emitted by the LEDs.

  The converter housing 190 accommodates an AC-DC converter that generates driving power for the LEDs mounted on the LED tube 110 and the lower substrate 170, and is coupled to the upper heat sink 140.

  The base housing (190a) is coupled to the converter housing (190), and a base terminal (191a) coupled to a lamp socket is fastened to the end.

  The lamp socket described above is a socket to which the base terminal (191a) is coupled in a screw manner, and can be easily understood by a normal engineer level in this technical field without exemplifying a specific structure. it can.

  The inside of the converter housing (190) and the inside of the base housing (190a) are completely filled with heat-dissipating silicone to be heat-dissipated, waterproofed and sealed.

  The converter housing (190) and the base housing (190a) are preferably screwed together. For example, a screw hole (drawing identification number—not shown) of the converter housing 190 is coupled to a screw passing through a screw boss (boss identification number—not shown) of the base housing 190a. The

  A screw passing through a screw hole (not shown in the drawing—not shown) of the converter housing 190 protrudes with a heat radiating pin 144 on the opposite side surface of the upper heat sink 140 connected to the upper substrate 130. The converter housing (190) is coupled to the upper heat sink (140) by being fastened to a screw boss (drawing identification number—not shown).

  The LED lamp 100 according to the present invention configured as described above operates as follows.

  When the base terminal (191a) of the LED lamp (100) is coupled to the lamp socket, the AC power is applied to the AC-DC converter in the converter housing (190). The converter converts the AC power into a driving power source for a plurality of LEDs mounted on a plurality of LED tubes (110) and the lower substrate (170), and the plurality of LED tubes (110) through the power supply line. And a plurality of LEDs mounted on the lower substrate 170.

  Accordingly, when the plurality of LEDs mounted on the plurality of LED tubes 110 and the lower substrate 170 emit light, the LED lamp 100 is connected to the above-described lamp socket. Light was irradiated in all the remaining directions except for the direction, and as a result of actual measurement, light distribution characteristics representing a beam angle of 240 ° or more could be confirmed.

  As described above, the heat generated while the LEDs mounted on the LED tubes 110 and the lower substrate 170 emit light is generated by the heat sinks 112 and the central heat sink. (120), the upper heat sink (140), and the lower heat sink (150).

  At this time, the heat released through the plurality of bar heat sinks 112, the central heat sink 120, the upper heat sink 140, and the lower heat sink 150 is a space formed inside the LED lamp 100. Thus, the air is radiated out of the LED lamp (100) by air convection which is smooth in all directions through the heat radiation gaps formed between the LED tubes (110).

  Further, the heat generated by the AC-DC converter inside the converter housing (190) when the LED lamp (100) emits light is generated by the upper heat sink (140) by heat radiating silicone completely filled in the converter housing (190). ) And then released.

  As described above, the LED lamp (100) according to the present invention includes a heat dissipation structure in which the heat dissipation gap formed between the LED tubes (110) and the inner space of the LED lamp (100) communicate with each other. 100), the heat release can be maximized regardless of the installation posture.

  FIG. 8 is an embodiment showing a use state of the LED lamp (100) installed so that the light irradiation direction is directed toward the ground. According to what is shown in FIG. 8, as indicated by the arrows by the heat dissipation structure in which the inner spaces of the LED lamp (100) communicate with each other, air convection is smoothed and the heat release generated when the LED lamp (100) emits light is generated. It can be seen that it can be maximized.

  FIG. 9 is an embodiment showing a use state of the LED lamp (100) installed so that the light irradiation direction is directed toward the horizon. According to what is shown in FIG. 9, as indicated by the arrows by the heat dissipation structure in which the inner space of the LED lamp (100) communicates with each other, the air convection becomes smooth and the heat release generated when the LED lamp (100) emits light. It can be seen that it can be maximized.

  FIG. 10 is an embodiment showing a use state of the LED lamp (100) installed so that the light irradiation direction is directed to the ground. According to what is shown in FIG. 10, as indicated by the arrows due to the heat dissipation structure in which the inner space of the LED lamp (100) communicates with each other, air convection becomes smooth and the heat release generated when the LED lamp (100) emits light. It can be seen that it can be maximized.

  The LED lamp according to the present invention described above is not limited to the above-described embodiment, and has ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the following claims. Anyone who is a person has the technical spirit to the extent that various modifications can be implemented.

100: LED lamp 110: LED tube 110a: reflective sheet 110b: substrate groove 110c: heat sink groove 110d: seal cap 110d-1: flat portion 111: rod substrate 112: rod heat sink 112a: protrusion 112b: ventilation groove 120: central heat sink 121: heat dissipation pin 130: upper substrate 140: upper heat sink 141: central through hole 142: screw boss 143: recess 144: heat dissipation pin 150: lower heat sink 151: center through hole 152: screw hole 153: heat dissipation pin 154: screw boss 160 : Heat conduction plate 170: Lower substrate 180: Lower substrate cover 181: Recess 190: Converter housing 190 a: Base housing 191 a: Base terminal

Claims (9)

A large number of rod-shaped LED tubes (which are made of a heat conductive plastic material and accommodate a rod substrate (111) on which a plurality of LEDs arranged along the length are mounted and to which a rod heat sink (112) is coupled. 110)
A plurality of heat dissipation pins radially outer periphery of the hollow cylinder (121) is formed to project, forming a radiating gap the in intervals each LED tube (110) is defined by combining the respective radiation fins (121) However, it is arranged and fixed in a pillar shape of a thread frame for winding the cocoon thread, and the length thereof is limited to be smaller than the length of the LED tube (110), and the inside of the LED lamp (100). A central heat sink that releases heat generated when the LED tubes (110) emit light by forming a heat dissipation structure that is open in all directions through a plurality of heat dissipation gaps to ensure a space that facilitates air convection. 120),
An upper substrate (130) connected to an upper portion of the plurality of LED tubes (110) to supply power;
An upper heat sink (140) coupled to the upper substrate (130) to release heat generated by the plurality of LED tubes (110) during light emission and heat generated in the converter housing (190);
Attached to a lower portion of the plurality of LED tubes (110), the lower heat sink in which a plurality of LED heat and lower substrate wherein the plurality of LED tubes (110) is generated during light emission (170) to dissipate heat generated during light emission (150)
A heat conductive plate 160 that is a heat conductive plastic material and is coupled to the lower heat sink 150 to conduct heat generated by the plurality of LEDs on the lower substrate 170 to the lower heat sink 150. When,
A lower substrate (170) fixed on the heat conducting plate (160) and mounted with a plurality of LEDs;
A heat conductive plastic material, which is sealed and bonded to the heat conductive plate (160) by an ultrasonic bonding method to cover the lower substrate (170), and is subjected to heat dissipation, waterproofing and sealing, and a plurality of lower substrates (170). A lower substrate cover (180) for diffusing the light emitted by the LED;
A converter housing (190) that houses an AC-DC converter that generates driving power for the LEDs mounted on the plurality of LED tubes (110) and the lower substrate (170), and is coupled to the upper heat sink (140);
A base housing (190a) coupled to the converter housing (190) and fastened with a base terminal (191a) coupled to a lamp socket at the end ;
The lower end of the LED tube (110) has a convex surface, and a heat-resistant plastic material seal cap (110d) is bonded by an ultrasonic bonding method, thereby heat dissipation, waterproofing and sealing treatment, A part of the surface of the seal cap (110d) is formed by a flat portion (110d-1) that provides a space in which the heat conductive plate (160) is disposed.
An LED lamp characterized by that. The LED tube (110) includes a reflective sheet (110a) that reflects and diffuses light emitted from a plurality of LEDs on the inner surface, and a substrate groove that is fixed on the back surface with the rod substrate (111) interposed therebetween. The LED lamp according to claim 1, wherein (110b) is formed, and a heat sink groove (110c) for fixing the rod heat sink (112) with the rod heat sink (112) interposed therebetween is formed on the outside of the back surface.   The LED lamp according to claim 1, wherein an upper end of the bar substrate (111) is welded to the upper substrate (130) while being exposed on an upper surface of the upper substrate (130). The LED tube (110) is formed with a substrate groove (110b) that is fixed with the rod substrate (111) sandwiched inside the back surface, and a heat sink groove that is fixed with the rod heat sink (112) sandwiched outside the back surface. (110c) is formed,
Said bar heat sink (112), the protrusion (112a) are formed, one side to the central portion along the length is opened cylindrical ventilation grooves (112b sandwiched heat sink grooves on both sides (110c) ) And the heat sink pin (121) of the central heat sink (120) is sandwiched and fixed in the ventilation groove (112b), and the upper heat sink (140) and the lower heat sink (150) are screwed together. The LED lamp according to claim 1. All the by the length of the central heat sink (120) is limited to a length range of 1 / 5-3 / 5 of the length of the LED tube (110), through the plurality of heat radiating gaps inside the LED lamp The LED lamp according to claim 1, wherein the LED lamp is opened in a direction to ensure a space for smooth air convection. The upper heat sink (140) has a central through hole (141) formed therein, and a ventilation groove (112b) formed in a cylindrical shape with one side open to the center along the length of the bar heat sink (112). A plurality of screw bosses (142) through which screws to be fastened to the upper substrate (130) are formed at a predetermined interval along the edge of the central through hole (141). A recess (143) is formed between the central through hole (141) and the edge of the side surface to be accommodated at a predetermined depth at each upper end of the upper substrate (130) and the plurality of LED tubes (110). It is, inside the recess (14 3) are waterproof and sealed process and the heat dissipation is completely filled with heat-radiation silicon, a plurality of heat dissipating pins on opposite sides for coupling with the upper substrate (130) (144) LED lamp according to claim 1, characterized in that it is projected. The lower heat sink (150) has a central through hole (151) formed therein, and a ventilation groove (112b) formed in a cylindrical shape with one side open to the center along the length of the bar heat sink (112). A plurality of screw holes (152) through which a screw to be fastened to is formed at a predetermined interval along the edge, and a plurality of heat radiation pins (153) are formed on the side surface coupled to the plurality of LED tubes (110). And a plurality of screw bosses (154) to which screws for connecting the heat conducting plate (160) are fastened to opposite sides of the plurality of LED tubes (110). The LED lamp according to claim 1, wherein the LED lamp protrudes at intervals. The lower substrate cover (180) has a convex surface, and the concave portion (181) formed in the center portion of the lower substrate (170) is arranged such that the light spots of the LEDs of the lower substrate (170) cannot be seen. 2. The LED lamp according to claim 1, wherein glare is prevented by focusing and diffusing the light emitted by the plurality of LEDs.   2. The LED lamp according to claim 1, wherein the converter housing (190) and the base housing (190 a) are completely filled with heat-dissipating silicone and heat-treated, waterproofed and sealed.