WO2016103914A1 - Lampe à diode électroluminescente - Google Patents

Lampe à diode électroluminescente Download PDF

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Publication number
WO2016103914A1
WO2016103914A1 PCT/JP2015/080723 JP2015080723W WO2016103914A1 WO 2016103914 A1 WO2016103914 A1 WO 2016103914A1 JP 2015080723 W JP2015080723 W JP 2015080723W WO 2016103914 A1 WO2016103914 A1 WO 2016103914A1
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WO
WIPO (PCT)
Prior art keywords
led lamp
base
led
socket
vibration
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Application number
PCT/JP2015/080723
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English (en)
Japanese (ja)
Inventor
孝佳 今成
清輝 岩崎
勇太 小林
Original Assignee
岩崎電気株式会社
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Application filed by 岩崎電気株式会社 filed Critical 岩崎電気株式会社
Publication of WO2016103914A1 publication Critical patent/WO2016103914A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/04—Resilient mountings, e.g. shock absorbers 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips

Definitions

  • the present invention relates to an LED lamp, and more particularly to a light bulb type LED lamp having an LED cooling function.
  • LED lamps using light emitting diodes are widely used.
  • LEDs light emitting diodes
  • the LED lamp has an advantage of having a high luminous efficiency as compared with the discharge lamp, but has a disadvantage that the luminous efficiency is lowered when the LED is heated to a high temperature. Therefore, an LED cooling mechanism for cooling the LED is provided in order to prevent the LED from becoming hot. Examples of the LED cooling mechanism include a heat sink and a cooling fan.
  • the base of the bulb-type LED lamp is the same as the base of the existing bulb lamp, and can be mounted on the socket for the existing bulb lamp.
  • a waterproof packing is used to prevent water from entering between the LED lamp and the socket.
  • Patent Document 1 discloses an example of a waterproof packing that covers a cylindrical portion provided with a base of an LED lamp and an outer periphery of a socket. This waterproof packing has not only a waterproof function but also a function to prevent the LED lamp from falling off.
  • Patent Document 2 describes an example in which a ring-shaped waterproof packing is provided on a collar of an LED lamp base. This waterproof packing is pressed in the axial direction by the end surface of the socket on the ring-shaped base end portion of the main body portion of the LED lamp.
  • the center axis of the lamp passing through the base is arranged in a horizontal or nearly horizontal posture.
  • the lamp body is cantilevered by the attachment part of the base and the socket. Therefore, a bending moment proportional to the weight of the lamp body and the position of the center of gravity acts on the mounting portion of the base and the socket. This bending moment increases when the LED lamp vibrates due to an external force.
  • the socket may be damaged.
  • An object of the present invention is to avoid damage to a socket in an environment where a long-time vibration is applied in a light bulb type LED lamp.
  • the inventor of the present application conducted an experiment in which a weight was added to a light bulb-type LED lamp, mounted on an existing socket, placed in a horizontal or nearly horizontal posture, and vibration was applied for a long time. As a result, it was found that the socket receiver was damaged. Therefore, when observing the condition that the receiver is damaged, due to the slight gap between the base of the LED lamp and the receiver of the socket, if the LED lamp vibrates, a load is applied to the receiver inside the socket, and the receiver is received. It was found that the connection part of the gold and socket was damaged. It has been found that vibration of the LED lamp occurs. Therefore, the inventor of the present application has conceived of inserting an annular elastic member between the base of the LED lamp and the socket base.
  • the inventor of the present application prototyped anti-vibration members having various shapes and dimensions, mounted them, and performed vibration tests. As a result, it was confirmed that damage to the socket receiver could be avoided by mounting a vibration isolating member having a predetermined shape and size.
  • a bulb-type LED lamp including a neck portion having a base, a top portion having an LED substrate on which an LED element is mounted, and a heat sink attached to the LED substrate
  • the neck portion may be provided with a tubular vibration-proof member that covers the periphery of the base, and when the base is mounted on a socket, the vibration-proof member may be inserted between the socket and the base.
  • the neck portion has a connecting member connected to the base, and the connecting member includes a conical portion on the base side and a cylindrical portion on the top side, and the vibration isolation The member may be attached so as to cover the conical portion and a part of the base.
  • the thickness of the end portion on the base side of the vibration isolation member may be smaller than the gap dimension between the socket and the conical portion.
  • the thickness of the vibration isolation member may increase from the base side toward the top side.
  • the vibration isolating member may be formed of silicon resin or silicon rubber.
  • the neck portion may have a size and a shape corresponding to the neck portion of a 400 W mercury lamp.
  • the present invention in a bulb-type LED lamp, it is possible to avoid damage to the socket in an environment where a long-time vibration is applied.
  • FIG. 1A is a perspective view illustrating a configuration example of an LED lamp according to the present embodiment.
  • FIG. 1B is a perspective view illustrating a configuration example of the LED lamp according to the present embodiment.
  • FIG. 2 is an exploded perspective view of the LED lamp according to the present embodiment.
  • FIG. 3 is a perspective view for explaining the structure of the LED unit and the spacer of the LED lamp according to the present embodiment.
  • FIG. 4 is an explanatory diagram illustrating a cooling air flow in the LED lamp according to the present embodiment.
  • FIG. 5 is an explanatory view for explaining the appearance of the LED lamp and an example of the vibration isolating member according to the present embodiment.
  • FIG. 6 is an explanatory diagram for explaining a state in which the LED lamp according to the present embodiment is mounted on the socket.
  • FIG. 1A is a perspective view illustrating a configuration example of an LED lamp according to the present embodiment.
  • FIG. 1B is a perspective view illustrating a configuration example of the LED lamp according to the present embodiment
  • FIG. 7A is a perspective view of an anti-vibration member of the LED lamp according to the present embodiment.
  • FIG. 7B is a cross-sectional view of the vibration-proof member of the LED lamp according to the present embodiment.
  • FIG. 8A is an explanatory diagram for explaining the dimensions of the neck portion of the LED lamp according to the present embodiment.
  • FIG. 8B is an explanatory diagram illustrating a load applied by the LED lamp according to the present embodiment.
  • FIG. 9 is a diagram showing a comparative LED lamp used in the vibration test.
  • FIG. 10A is an explanatory diagram illustrating a result of a vibration test of the LED lamp of the comparative example.
  • FIG. 10B is an explanatory diagram showing the results of a vibration test of the LED lamp of this embodiment using a vibration isolation member.
  • the LED lamp 10 includes a base 13, a connecting member 19 connected to the base 13, a case 20 attached to the connecting member 19, and a cylindrical transparent piece attached to the case 20. And a light cover 41.
  • An LED unit 30 is disposed inside the cover 41.
  • the LED lamp according to this embodiment is a so-called bulb type.
  • the base side the direction toward the base 13 or the direction close to the base 13 along the central axis of the lamp passing through the base 13
  • the opposite will be referred to as the top side.
  • the housing 20 includes a cylindrical portion 21 on the base side, a fan storage portion 23 on the top side, and an air intake portion 24 therebetween.
  • the cylindrical portion 21 and the fan accommodating portion 23 have a substantially cylindrical outer surface, and the outer diameter of the fan accommodating portion 23 is larger than the outer diameter of the cylindrical portion 21.
  • the cylindrical outer surfaces of the cylindrical portion 21 and the fan storage portion 23 may be inclined along the axial direction so that the outer diameter slightly decreases toward the base side.
  • the air intake 24 has an opening for taking in cooling air.
  • the LED lamp 10 further includes a ring-shaped vibration isolating member 14 that covers a part of the base 13 and the connecting member 19.
  • the LED lamp includes a cover 41, an LED unit 30, a spacer 18, a cooling fan 15, a circular circuit board 27, a housing 20, a connection member 19, a base 13, and a vibration isolation member 14.
  • a plurality of air discharge holes 42 are formed at the top side end of the cover 41.
  • the air discharge holes 42 are arranged concentrically so as to surround the central axis of the LED lamp.
  • the structures of the LED unit 30, the spacer 18, and the cooling fan 15 will be described later.
  • the cooling fan 15 may typically be an axial fan having a motor and rotating blades provided around the motor.
  • the motor may be a direct current brushless motor.
  • the housing 20 includes a base-side cylindrical portion 21, a top-side air intake portion 24, and an intermediate fan storage portion 23.
  • the air intake portion 24 is provided with a plurality of air inlets 242 along the circumferential direction.
  • the circuit board 27 is disposed in the air intake portion 24 of the housing 20.
  • the circuit board 27 includes a lamp protection circuit that stops the supply of current to the LED element when the temperature of the LED element rises, and a fan drive circuit that supplies a direct current to the cooling fan 15.
  • the cooling fan 15 is disposed in the fan storage portion 23 of the housing 20.
  • the spacer 18 is attached to the fan storage portion 23 of the housing 20.
  • the spacer 18 is made of resin.
  • the LED unit 30 is mounted so as to engage with the spacer 18.
  • the cover 41 is mounted so as to cover the LED unit 30.
  • the LED unit 30 includes an LED substrate 31 formed in a cylindrical shape and a heat sink 32 attached to the inner surface thereof.
  • the LED substrate 31 is disposed so as to be parallel to and surround the central axis of the LED lamp.
  • the LED substrate 31 includes a cylindrical wiring substrate 311 and a plurality of LED elements 312 mounted on the outer surface thereof.
  • the heat sink 32 is attached in close contact with the inner surface of the LED substrate 31 so as to be in surface contact.
  • the heat sink 32 has a plurality of heat radiation fins 322.
  • the fins 322 extend along the central axis of the LED lamp.
  • the shape of the fin 322 is not particularly limited.
  • a through hole 33 through which an air flow passes is formed inside the heat sink 32.
  • the heat sink 32 is manufactured by sequentially bending one rectangular thin metal plate member.
  • the heat sink 32 is made of a metal having high thermal conductivity, for example, copper, aluminum alloy, stainless steel, or the like.
  • the LED substrate 31 is formed in a cylindrical body having a regular octagonal cross section.
  • the LED substrate 31 is not limited to the illustrated example, and may be formed in a cylindrical body having a regular polygon other than a regular octagon in cross section.
  • the LED substrate 31 is formed by bending one plate-like rectangular LED substrate in order along the seven bent portions 319 and forming it into a cylindrical shape. Accordingly, a gap 31A is formed between both edges of the cylindrical LED substrate.
  • the LED substrate 31 has thin elongated holes 315 along the seven bent portions 319.
  • the LED substrate 31 and the heat sink 32 are fixed by a clip 35 at the top side end (upper end in FIG. 3). Further, the LED substrate 31 and the heat sink 32 are fixed by a rivet 37 at a substantially central position in the axial direction.
  • the clips 35 and rivets 37 are provided at a total of eight locations for each surface of the regular octahedron.
  • the spacer 18 includes a center member 181 and an annular member 183 around the center member 181.
  • the central member 181 and the annular member 183 are connected by a radial support member 185.
  • An annular through hole 186 is formed between the center member 181 and the annular member 183.
  • the center member 181 includes a circular member 181A provided on the top side end surface and a cylindrical member 181B that supports the circular member 181A.
  • the annular member 183 has an annular top side end surface 183A and a cylindrical inner surface 183B.
  • An engaging member 187 is provided on the top side end surface 183A.
  • the through hole 186 of the spacer 18 has a cross-sectional area that increases from the base side to the top side. At least one of the cylindrical inner surface 183B of the annular member 183 and the cylindrical member 181B of the center member 181 is inclined along the axial direction. In the illustrated example, the diameter of the cylindrical inner surface 183B of the annular member 183 increases toward the top side. Furthermore, the outer diameter of the cylindrical member 181B of the center member 181 may be increased toward the top side.
  • the cooling fan 15 has a central cylindrical motor 151 and a cylindrical member 153 around it, and an annular through-hole 156 is formed between them. A rotating blade is disposed in the through hole 156.
  • the motor 151 and the cylindrical member 153 are connected by a radial support member 155.
  • the motor 151 of the cooling fan 15 and the central member 181 of the spacer 18 have corresponding shapes and dimensions, and are arranged so as to be aligned along the central axis of the lamp.
  • the motor 151 of the cooling fan 15 and the circular member 181A of the central member 181 of the spacer 18 may be formed to have the same outer diameter.
  • the end surface on the base side of the motor 151 of the cooling fan 15 and the cylindrical member 181B of the central member 181 of the spacer 18 may be formed to have the same outer diameter.
  • the support member 155 of the cooling fan 15 and the support member 185 of the spacer 18 have corresponding shapes and dimensions, and are arranged in alignment along the central axis of the lamp.
  • the spacer 18 includes four support members 185.
  • the through hole 156 of the cooling fan 15 and the through hole 186 of the spacer 18 have corresponding shapes and dimensions, and are arranged in alignment along the central axis of the lamp.
  • the top opening of the through hole 156 of the cooling fan 15 and the base opening of the through hole 186 of the spacer 18 may be formed to have the same shape.
  • a continuous tubular air flow path is formed by the through hole 156 of the cooling fan 15 and the through hole 186 of the spacer 18. This air flow path is connected to a through hole 33 inside the heat sink 32.
  • the LED unit 30 is mounted on the annular member 183 of the spacer 18.
  • the base end (lower end in FIG. 3) of the LED substrate 31 is in contact with the top end surface 183A of the annular member 183 of the spacer 18 and is held by the engaging member 187.
  • the engaging member 187 may have a claw shape as illustrated, but may have another shape.
  • the inventors of the present application diligently studied a preferable shape of the central member 181 of the spacer 18.
  • the inventor of the present application prepares a spacer 18 having a tubular center member 181 and a spacer 18 having a bottomed cylindrical container-shaped center member 181, and is mounted on the LED lamp shown in FIG. Went.
  • the use of the spacer 18 with the bottomed cylindrical container-shaped center member 181 is more effective for cooling the motor 151 of the cooling fan 15 than when the spacer 18 with the tubular center member 181 is used.
  • the case where the circular member 181A is provided on the top side of the cylindrical member 181B in the central member 181 was compared with the case where it was provided on the base side.
  • the center member 181 is formed in a bottomed cylindrical container shape having a circular member 181A and a cylindrical member 181B as shown in FIG.
  • FIG. 4 shows a cross-sectional structure along the axial direction of the LED lamp according to the present embodiment.
  • the base side end portion of the cover 41 is connected to the top side end surface of the fan storage portion 23 of the housing 20.
  • the LED unit 30, the spacer 18, and the cooling fan 15 are disposed in a space formed by the cover 41 and the fan storage portion 23.
  • the LED unit 30, the spacer 18, and the cooling fan 15 are arranged in alignment along the central axis of the lamp.
  • the fins 322 of the heat sink 32 extend along the axial direction from the base side end of the heat sink 32 to the top side end.
  • the spacer 18 is disposed between the cooling fan 15 and the heat sink 32. That is, a space for arranging the spacer 18 is formed between the cooling fan 15 and the heat sink 32. In the present embodiment, a space is provided between the cooling fan 15 and the heat sink 32, and the spacer 18 is disposed in this space to prevent heat from the heat sink 32 from being transmitted to the motor 151 of the cooling fan 15. Is done.
  • the inner diameter of the through hole 33 of the heat sink 32 is larger than the outer diameter of the through hole 156 of the cooling fan 15. That is, there is a difference between the cross section of the through hole 33 of the heat sink 32 and the cross section of the through hole 156 of the cooling fan 15.
  • the spacer 18 has a function of reducing this difference. As shown in the figure, the cylindrical inner surface 183B of the annular member 183 of the spacer 18 is inclined, and its diameter increases from the base side to the top side. That is, the cross section of the through hole 186 of the spacer 18 increases from the base side to the top side.
  • the difference between the cross section of the through hole 33 of the heat sink 32 and the cross section of the through hole 156 of the cooling fan 15 is alleviated by a change in the cross section of the through hole 186 of the spacer 18.
  • the cooling air generated by the cooling fan 15 can be efficiently guided to the through hole 33 of the heat sink 32.
  • the air intake portion 24 of the housing 20 includes a plurality of support members 241 that bridge the cylindrical portion 21 and the fan storage portion 23. An air inlet 242 is formed between these support members 241.
  • the support member 241 has a substantially triangular shape, and a virtual conical surface that includes the outer surface of the hypotenuse in common is formed.
  • the fan housing part 23 of the housing 20 has a cylindrical part 23A and a bottom part 23B. An air suction hole 231 is formed in the bottom surface portion 23B.
  • the path of the air flow for cooling the LED lamp according to this embodiment will be described. Arrows indicate the path of the cooling air flow.
  • the through hole 33 and the air discharge hole 42 of the cover 41 are arranged in alignment along the axial direction of the lamp, and form one continuous air flow passage. Further, the through hole 33 of the heat sink 32, the long hole 315 and the gap 31A (FIG. 3) of the LED substrate 31, the space 43 between the cover 41 and the LED substrate 31, and the air discharge hole 42 of the cover 41 are arranged along the axis of the lamp. One continuous air flow passage is formed around.
  • the cooling air flow generated by the cooling fan 15 is guided to the through hole 33 of the heat sink 32 via the through hole 186 of the spacer 18.
  • heat exchange is performed.
  • the cooling air takes heat away from the heat sink 32 and its temperature rises.
  • the air having a relatively high temperature after cooling passes through the through hole 33 and is discharged from an air discharge hole 42 provided at the top side end of the cover 41.
  • the wiring board 311 and the LED element 312 are cooled by the cooling air flowing into the space 43.
  • the space through which the cooling air passes forms a sealed space except for the air intake port 242 of the air intake portion 24 of the housing 20 and the air discharge hole 42 of the cover 41. Therefore, all the cooling air introduced from the external space efficiently passes through the through holes 33 and the space 43 of the heat sink 32 and is used for cooling the heat sink 32 and the LED substrate 31. Therefore, the heat sink 32 and the LED substrate 31 in surface contact with the heat sink 32 can be efficiently cooled. Thus, the heat sink 32 and the LED substrate 31 are prevented from being heated up.
  • the LED substrate 31 is formed by bending one plate-like rectangular LED substrate in order along the seven bent portions 319 and forming it into a cylindrical shape. Accordingly, a gap 31A is formed between both edges of the cylindrical LED substrate.
  • the LED substrate 31 has thin elongated holes 315 along the seven bent portions 319.
  • a hole 313 is formed in each of the central portions of the eight surfaces of the LED substrate 31.
  • the heat sink 32 of the present embodiment includes a mounting portion 321 having a flat mounting surface and a plurality of thin plate-like heat radiation fins 322 extending perpendicularly from the mounting portion 321, and between adjacent fins 322.
  • a recess 324 is formed.
  • a hole 323 is formed near the center of the mounting portion 321.
  • a total of eight heat sinks 32 are provided for each of the eight surfaces of the LED substrate 31.
  • the heat sink 32 is disposed so as not to block the long hole 315 of the LED substrate 31.
  • a single integrated heat sink in which eight heat sinks 32 are integrated may be used. When an integrated heat sink is used, it is bent in order at seven locations and formed into a cylindrical shape.
  • the integrated heat sink may have a long hole similar to the long hole 315 of the LED substrate 31 along the seven bent portions 319. Details of the structure and manufacturing method of the heat sink 32 will be described later.
  • the LED substrate 31 and the heat sink 32 are fixed by a clip 35 at a top side end (upper end in FIG. 5).
  • the clip 35 may have any structure or shape as long as it can be fixed with the edge of the LED substrate 31 and the heat sink 32 interposed therebetween.
  • the clip 35 fixes the LED substrate 31 and the heat sink 32 with a spring force.
  • the spring force is generated by a leaf spring or a wire spring. Details of the clip 35 will be described later.
  • the LED substrate 31 and the heat sink 32 are fixed by a rivet 37 at a substantially central position in the axial direction.
  • the rivet 37 passes through the hole 313 of the LED substrate 31 and the hole 323 of the heat sink 32.
  • the clips 35 and rivets 37 are provided at a total of eight locations for each surface of the regular octahedron.
  • FIG. 5 shows an example of a cross-sectional configuration along the central axis of the LED lamp of this embodiment shown in FIG. 1B.
  • the LED lamp 10 includes the base 13, the connecting member 19 connected to the base 13, the housing 20 attached to the connecting member 19, and the cylindrical light-transmitting member attached to the housing 20.
  • a ring-shaped vibration isolating member 14 that covers a part of the base 13 and the connecting member 19.
  • the housing 20 includes a cylindrical portion 21 on the base side, a fan storage portion 23 on the top side, and an air intake portion 24 therebetween.
  • an LED lamp top portion 10A a portion composed of the cover 41, the fan housing portion 23 and the air intake portion 24 is referred to as an LED lamp top portion 10A, and a portion composed of the cylindrical portion 21, the connecting member 19 and the base 13 is referred to as an LED lamp neck portion 10B. I will do it.
  • the connecting member 19 includes a conical part 191 on the base side and a cylindrical part 192 on the top side.
  • the outer diameter of the top end portion of the conical portion 191 is larger than the outer diameter of the end portion on the base side.
  • the outer diameter of the cylindrical portion 192 is larger than the outer diameter of the top side end portion of the conical portion 191. Therefore, a step is formed at the boundary between the conical portion 191 and the cylindrical portion 192.
  • the vibration isolation member 14 is mounted so as to cover the conical portion 191 of the connecting member 19 and the top side end portion of the base 13.
  • FIG. 6 shows an example of the LED lamp of this embodiment mounted on an existing socket.
  • a screw-type receiver 51 is provided on the inner surface of the recess of the socket 50, and a flat receiver 52 is provided on the bottom of the recess.
  • the screw-type terminal on the outer surface of the base 13 of the LED lamp is in contact with the receiver 51, and the terminal at the tip is in contact with the receiver 52.
  • the base side end of the vibration isolating member 14 enters the recess of the socket 50. That is, the base side end portion of the vibration isolation member 14 is disposed between the base 13 of the LED lamp and the recess of the socket 50. Therefore, in this embodiment, the space between the base 13 of the LED lamp and the socket 50 is filled with the vibration isolating member 14. Therefore, free movement of the LED lamp can be prevented. That is, the vibration isolating member 14 can prevent the LED lamp from vibrating perpendicular to the center axis of the lamp.
  • FIG. 7A is a perspective view of the vibration isolator 14 according to the present embodiment
  • FIG. 7B is a cross-sectional view of the vibration isolator 14 according to the present embodiment.
  • the vibration isolator 14 is formed of a tubular member having a cylindrical outer surface 141 and a cylindrical inner surface 142. As shown in FIG. 7B, the thickness of the vibration isolation member 14 decreases from the top side end portion 143 toward the base side end portion 144. That is, in the vibration isolating member 14, at least one of the outer surface 141 and the inner surface 142 may be inclined along the axial direction.
  • the outer surface 141 of the vibration isolation member 14 is inclined along the axial direction.
  • the thickness of the base end 144 of the vibration isolator 14 is smaller than the gap dimension between the socket 50 and the conical part 191 of the connecting member 19, and is 2.5 mm in this embodiment.
  • the vibration isolation member 14 is formed of an arbitrary elastic material having weather resistance, but may be formed of, for example, silicon resin or silicon rubber.
  • FIG. 8A is a view showing an LED lamp not equipped with the vibration isolating member 14 and has already been shown in FIG. 1A.
  • the LED lamp according to the present embodiment may be mounted on a projector provided with a 400 W mercury lamp. Accordingly, the neck portion 10B of the LED lamp is formed in substantially the same shape and the same size as the neck portion of the 400W mercury lamp.
  • the top portion 10A is disposed in the reflector 10C of the projector, and the neck portion 10B of the LED lamp is disposed in a housing (not shown) of the projector.
  • the base 13 (FIG. 8B) of the LED lamp is attached to the socket (FIG.
  • the dimension of the neck portion 10B of the LED lamp in the axial direction is Ln
  • the outer diameter of the neck portion 10B is Dn.
  • the cross section of the neck portion 10B is not constant along the axial direction, and decreases toward the base. Therefore, the outer diameter Dn of the neck portion 10B may be approximated by the outer diameter of the cylindrical portion 21 (FIG. 6) of the housing 20.
  • the base 13 of the LED lamp is mounted on the socket (FIG. 6) so that the center axis of the LED lamp is horizontal.
  • a weight 55 was attached to the top portion 10A.
  • the weight 55 is made of ring-shaped steel, and is fixed around the top portion 10A with a screw. For each vibration test, a different number of weights 55 were mounted, and further mounted at different positions along the central axis direction of the top portion 10A.
  • the LED lamp is supported by a cantilever support structure in which the tip of the top portion 10A is a free end and the attachment portion of the base and the socket is a fixed end.
  • the position of the center of gravity of the LED lamp to which the weight is attached is G
  • the position of the fixed end is P.
  • the center-of-gravity position G is between the center of gravity of the lamp and the center of gravity of the weight 55, but here is approximated by the center position of the weight 55 in the horizontal direction.
  • the position P of the fixed end is approximated by the end portion of the base 23.
  • the weight of the lamp used in the experiment is 300 grams, and the weight of one weight 55 is 400 grams.
  • W be the gravity acting on the center of gravity G.
  • W 300 + 400 ⁇ n.
  • n is the number of weights 55.
  • the vibration test was performed by a method in which the LED lamp was vibrated in the z-axis (vertical) direction with the LED lamp mounted horizontally on the socket. After the vibration test, the LED lamp was removed and the metal plate 52 of the socket 50 was observed.
  • FIG. 9 shows a comparative LED lamp used in the vibration test.
  • the LED lamp of the comparative example used a waterproof packing 53 instead of the vibration-proof member.
  • the waterproof packing is attached so as to cover the neck portion 10B of the LED lamp and the outside of the socket 50. That is, it is mounted so as to cover the cylindrical portion 192 of the connecting member 19 and the cylindrical outer surface of the socket 50.
  • the horizontal axis represents the lamp center of gravity
  • the vertical axis represents the lamp weight.
  • the center of gravity of the lamp is approximated by the distance L from the fixed end P to the position of the weight 5.
  • the lamp weight W is the sum of the weight of the LED lamp and the weight of the weight.
  • a circle mark indicates a sample in which the metal plate 52 of the socket 50 is not damaged
  • a mark X indicates a sample in which the metal plate 52 of the socket 50 is broken.
  • FIG. 10A shows the result of the vibration test of the comparative LED lamp (FIG. 9) using the waterproof packing 53
  • FIG. 10B shows the vibration of the LED lamp (FIG. 6) of the present embodiment using the vibration isolating member 14.
  • the result of a test is shown.
  • FIG. 10A in the comparative example, when the lamp weight exceeds 1000 grams, the socket 52 of the socket 50 is damaged.
  • the receiver 52 of the socket 50 is not damaged when the center of gravity of the lamp is smaller than 150 mm, but the receiver 52 of the socket 50 is damaged when the center of gravity of the lamp exceeds 150 mm.
  • a curved line 57 is a boundary line that divides the case where the receiving metal 52 of the socket 50 is damaged from the case where it is not damaged in the comparative example.
  • the receiver 52 of the socket 50 when the lamp weight is 1000 g or less, the receiver 52 of the socket 50 is not damaged at least when the lamp center of gravity is smaller than 200 mm.
  • the lamp weight is 1100 grams, if the lamp center of gravity position is smaller than 170 mm, the catch 52 of the socket 50 is not damaged. However, if the lamp center of gravity exceeds 170 mm, the catch 52 of the socket 50 is damaged.
  • a curved line 58 is a boundary line that divides the case where the receiving metal 52 of the socket 50 is damaged and the case where it is not damaged in this embodiment. Comparing the boundary line 58 of the present embodiment with the boundary line 57 (FIG.
  • the boundary line 58 is in a direction in which the lamp center of gravity increases or in a direction in which the lamp weight increases. You can see that it is moving. Therefore, in the LED lamp of this embodiment, it can be said that the receiving metal 52 of the socket 50 is not easily damaged as compared with the LED lamp of the comparative example.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

La présente invention permet d'éviter l'endommagement d'une douille pour une lampe à ampoule à diode électroluminescente dans un environnement dans lequel des vibrations sont appliquées sur une longue période de temps. À cet effet, l'invention concerne une lampe à ampoule à diode électroluminescente comportant une partie de col, et une partie supérieure comprenant une carte de base de diodes électroluminescentes sur laquelle un élément de diode électroluminescente est monté et un dissipateur thermique est fixé sur la carte de base de diode électroluminescente. La partie de col est équipée d'un élément anti-vibration de forme tubulaire recouvrant la circonférence de la base, de sorte que, lorsque la base est montée dans la douille, l'élément anti-vibration soit enserré entre la douille et la base. La partie de col comprend un élément d'accouplement relié à la base. L'élément d'accouplement comprend une partie conique sur le côté de la base et une partie de forme cylindrique sur la face supérieure. L'élément anti-vibration est fixé de manière à recouvrir la partie conique et une partie de la base.
PCT/JP2015/080723 2014-12-22 2015-10-30 Lampe à diode électroluminescente WO2016103914A1 (fr)

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Cited By (3)

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CN108006446A (zh) * 2017-11-06 2018-05-08 宁波凯耀电器制造有限公司 Led灯灯头结构及其装配方法
CN109578822A (zh) * 2017-09-26 2019-04-05 江西鸿利光电有限公司 一种高导热性能的led灯丝灯
CN110319361A (zh) * 2018-03-27 2019-10-11 骆玉 灯具结构

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US11293632B2 (en) 2017-12-29 2022-04-05 Shenzhen Fluence Technology Plc Lamp and light source substrate thereof
CN207831027U (zh) * 2017-12-29 2018-09-07 深圳市超频三科技股份有限公司 灯具及其光源基板
CN108317409B (zh) * 2017-12-29 2020-09-11 深圳市超频三科技股份有限公司 灯具
JP7173430B2 (ja) * 2018-06-04 2022-11-16 岩崎電気株式会社 Ｌｅｄランプ

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JP2014112516A (ja) * 2012-10-31 2014-06-19 Iwasaki Electric Co Ltd ランプ
JP2014165085A (ja) * 2013-02-27 2014-09-08 Mitsubishi Electric Corp 発光ダイオードランプ及び照明装置

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2014112516A (ja) * 2012-10-31 2014-06-19 Iwasaki Electric Co Ltd ランプ
JP2014165085A (ja) * 2013-02-27 2014-09-08 Mitsubishi Electric Corp 発光ダイオードランプ及び照明装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109578822A (zh) * 2017-09-26 2019-04-05 江西鸿利光电有限公司 一种高导热性能的led灯丝灯
CN108006446A (zh) * 2017-11-06 2018-05-08 宁波凯耀电器制造有限公司 Led灯灯头结构及其装配方法
CN108006446B (zh) * 2017-11-06 2020-01-17 宁波凯耀电器制造有限公司 Led灯灯头结构及其装配方法
CN110319361A (zh) * 2018-03-27 2019-10-11 骆玉 灯具结构

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JP6521479B2 (ja) 2019-05-29

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