JP2012119283A - Lamp, and lamp device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve waterproofness between a lamp and a lamp holder.SOLUTION: The LED lamp 1 to be mounted on an opening of a lamp holder 60 arranged outdoors through an annular waterproofing packing 70 is provided with a light emitting part 12 emitting light by an LED 15, a body section 2 continuing to the light emitting part 12, a heat radiating fin 25 provided on a connecting part to the light emitting part 12 of the body section 2, and a cap 3 arranged on an end edge 2A of the body section 2. A cone part 40 in an intermediate part of the body section 2 between the heat radiating fin 25 and the cap 3 is formed in a cone shape getting thinner toward the end edge 2A; a cone shaped hole 72 of the annular waterproofing packing 70 is formed in a cone shape so as to be engaged with the cone part 40; the cone shaped hole 72 of the annular waterproofing packing 70 is engaged with the cone part 40 when the annular waterproofing packing 70 is mounted; and a waterproofing structure is completed when an outer circumferential part 78 of the annular waterproofing packing 70 is locked with an opening periphery 66 of the lamp holder 60.

Description

  The present invention relates to a waterproof technology for a lamp and a lamp device that are illuminated by light emitted from a light emitting element such as an LED or an organic EL.

2. Description of the Related Art In recent years, light bulb-type LED lamps that can be used as a substitute for light bulbs have become widespread with the increase in output and cost of LEDs. In this type of LED lamp, an LED mounting board on which LEDs are mounted is generally placed on a flat disk, a cylindrical body is connected to the back of the flat disk, and an insulating part is provided at the end of the body. It is configured with a base interposed therebetween. And this LED lamp will be mounted | worn with the lamp holder etc. which were equipped with the socket for the conventional light bulbs, when a nozzle | cap | die is engaged with a socket.
In addition, various techniques for dissipating heat by providing a plurality of heat dissipating fins are known for LED lamps in order to prevent LED deterioration and light quantity reduction due to LED heat generation. For example, a technique for radiating heat by forming a large number of radiating fins extending from a flat disk to an insulating portion of a base on the outer peripheral surface of the body portion of the LED lamp is known (for example, see Patent Document 1).

Utility Model Registration No. 3156563

By the way, when the LED lamp is used outdoors, it is necessary to waterproof between the LED lamp and the lamp holder, and waterproofing is provided by interposing a waterproof packing between the radiation fin of the LED lamp and the lamp holder. It is possible to plan. However, when the fuselage has a plurality of radiating fins as in the LED lamp, a relatively large amount of liquid enters between the radiating fins, and this liquid is sealed with the waterproof packing. And the LED lamp.
Such a problem is not limited to LED lamps, but is a problem common to lamps that include a light emitting element such as an organic EL in a light source and whose temperature is higher than the ambient temperature when the light emitting element is turned on.
The present invention has been made in view of the above-described circumstances, and in a lamp having a radiating fin in a body portion and a lamp device using the lamp, the waterproof property between the lamp and the lamp holder is improved. Objective.

  In order to achieve the above object, the present invention provides a lamp mounted on an opening of a lamp holder installed outdoors via a waterproof packing, a light emitting part that emits light by a light emitting element, and a fuselage that continues to the light emitting part Part of the body part between the heatsink fin and the base, and a base part provided at the terminal of the body part. An intermediate portion is formed in a conical shape that tapers toward the end, and an inner peripheral portion of the waterproof packing is formed in a conical shape so as to be fitted to the intermediate portion, and when the waterproof packing is attached, A peripheral portion is fitted into the intermediate portion of the body portion, and an outer peripheral portion of the waterproof packing is engaged with an opening edge portion of the lamp holder to form a waterproof structure.

Moreover, the said structure WHEREIN: The said outer peripheral part of the said waterproof packing may be pressed against the said opening edge part of the said lamp holder with the said heat radiating fin, and may be crushed.
Moreover, it is good also as a structure which formed the annular | circular shaped lip | rip part which protrudes in a radial inside on the said internal peripheral surface of the said waterproof packing.
Further, an annular groove portion that goes around the upper surface may be provided on the upper surface of the waterproof packing, and a drainage portion that communicates the annular groove portion with the outer peripheral surface of the waterproof packing may be formed.

  The present invention also relates to a lamp that is attached to an opening of a lamp holder installed outdoors via a waterproof packing, a light emitting unit that emits light by a light emitting element, a body unit that is connected to the light emitting unit, and the body A heat dissipating fin provided at a connecting portion of the light emitting part and a base provided at a terminal end of the body part, and a step part is provided in the body part between the heat dissipating fin and the base. The intermediate portion on the end side from the step portion is formed in a substantially circular cylindrical shape, and the inner peripheral portion of the waterproof packing is formed so as to be fitted to the cylindrical intermediate portion, and when the waterproof packing is attached, A waterproof packing is sandwiched between the step portion of the body portion and the opening edge portion of the lamp holder, an inner peripheral portion of the waterproof packing is fitted to the intermediate portion of the body portion, The outer periphery is the opening edge of the lamp holder Engage, characterized in that a waterproof structure.

  The present invention also includes a lamp holder installed outdoors, and a lamp attached to the opening of the lamp holder via a waterproof packing, the lamp emitting light by a light emitting element, and the light emission A body part connected to the body part, a radiation fin provided at a connection part of the body part with the light emitting part, and a base provided at a terminal end of the body part, between the radiation fin and the base An intermediate portion of the body portion is formed in a conical shape that tapers toward the end, and an inner peripheral portion of the waterproof packing is formed in a conical shape so as to be fitted to the intermediate portion, and when the waterproof packing is attached, A lamp device characterized in that an inner peripheral portion of the waterproof packing is fitted to the intermediate portion of the body portion, and an outer peripheral portion of the waterproof packing is engaged with an opening edge portion of the lamp holder to form a waterproof structure. provide.

  The present invention also includes a lamp holder installed outdoors, and a lamp attached to the opening of the lamp holder via a waterproof packing, the lamp emitting light by a light emitting element, and the light emission A body part connected to the body part, a radiation fin provided at a connection part of the body part with the light emitting part, and a base provided at a terminal end of the body part, between the radiation fin and the base A step portion is provided in the body portion, an intermediate portion on the terminal end side from the step portion is formed in a substantially circular cylindrical shape, and an inner peripheral portion of the waterproof packing is formed so as to be fitted to the cylindrical intermediate portion. When the waterproof packing is mounted, the waterproof packing is sandwiched between the step portion of the body portion and the opening edge portion of the lamp holder, and the inner peripheral portion of the waterproof packing is the intermediate portion of the body portion. Fits into the waterproof packing The outer peripheral portion to provide a lamp device which is characterized in that a waterproof structure engaged with the opening edge of the lamp holder.

  According to the present invention, it is possible to prevent the liquid flowing from the radiating fin side to the waterproof packing side from entering between the waterproof packing and the opening edge and the body portion of the lamp holder, and the waterproof property between the lamp and the lamp holder. Can be improved.

It is a disassembled perspective view which shows the external appearance structure of the LED lamp apparatus which concerns on 1st Embodiment of this invention. It is sectional drawing of an LED lamp apparatus. It is sectional drawing which shows the state which mounted | worn the existing light bulb lamp to the lamp holder. It is a figure which shows the external appearance structure of an LED lamp, FIG. 4 (A) is a top view, FIG.4 (B) is a side view, FIG.4 (C) is a bottom view. It is a front view which decomposes | disassembles and shows an LED lamp. It is sectional drawing which shows the internal structure of a LED lamp. It is an enlarged view of the termination | terminus of an insulation cylinder part. It is a top view of a base board. It is a figure which shows a cyclic | annular waterproof packing, FIG. 9 (A) is a top view, FIG.9 (B) is IX-IX sectional drawing of FIG. 9 (A). It is an enlarged view of the vicinity of the annular waterproof packing in FIG. It is sectional drawing which shows the other shape of the radiation fin in 1st Embodiment. It is sectional drawing which shows the internal structure of the LED lamp apparatus of 2nd Embodiment. It is sectional drawing which shows the other shape of the trunk | drum part in 2nd Embodiment. It is sectional drawing which shows the internal structure of the LED lamp apparatus of 3rd Embodiment. It is sectional drawing which shows the structure which provided the curved surface part in the press plate of 3rd Embodiment. It is sectional drawing which shows the structure which provided the curved surface part in the press plate of 3rd Embodiment. It is sectional drawing which shows the structure using the annular waterproof packing in 3rd Embodiment. It is an expanded sectional view of the engaging part of the annular waterproof packing of the fourth embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, an LED lamp will be described as an example of a lamp having a light emitting element as a light source. However, the present invention is not limited to this, and for example, an organic EL element using an organic EL element as the light emitting element. An EL lamp may be used.
<First Embodiment>
FIG. 1 is an exploded perspective view showing an external configuration of the LED lamp device according to the first embodiment. FIG. 2 is a cross-sectional view of the LED lamp device.
The LED lamp device 100 (lamp device) is a lighting fixture used for outdoor signboard illumination and the like. As shown in FIGS. 1 and 2, the LED lamp 1 (lamp) and a lamp holder 60 that supports the LED lamp 1 are used. And an annular waterproof packing 70 interposed between the LED lamp 1 and the lamp holder 60.

The lamp holder 60 is a lamp holder in which both an existing light bulb and the LED lamp 1 can be mounted. As shown in FIGS. 1 and 2, the lamp holder 60 includes a cylindrical holder housing 62 and an arm attachment portion 64 to which a support arm (not shown) is rotatably attached to a terminal portion 62A of the holder housing 62. In general, it is structured. The lamp holder 60 has been installed for mounting an existing light bulb, and one end side is greatly opened so that the existing light bulb can be mounted. An opening edge portion 66 of the opening has a cylindrical shape. The diameter of the holder housing 62 is substantially the same. A plurality of protrusions 68 for fixing a net-like guard member (not shown) that covers and protects the LED lamp 1 is provided on the outer peripheral surface below the opening edge portion 66.
Also, in the holder housing 62, a socket 65 into which a base 3 provided at the end of the LED lamp 1 or a base 92 of an existing light bulb lamp 90 (FIG. 3) is screwed is disposed on the end 62A side. ing. The socket 65 is connected to a power supply line drawn from the arm mounting portion 64, and power is supplied from the base 3 to the LED lamp 1 or the existing light bulb lamp 90 through the socket 65.

FIG. 3 is a cross-sectional view showing a state in which the existing bulb lamp 90 is mounted on the lamp holder 60.
The bulb lamp 90 includes a glass bulb portion 91 and a tube portion 93 having a base 92 at the end. The bulb lamp 90 is attached to the lamp holder 60 by engaging the base 92 with the socket 65. In this state, the base 90A of the bulb lamp 90 in the vicinity of the tube portion 93 and the opening edge 66 of the holder housing 62 are arranged. Between them, an annular light bulb packing 94 is interposed. In this manner, the bulb lamp 90 has a size such that the base portion 90 </ b> A abuts the opening edge portion 66 and closes the opening of the lamp holder 60, so that the annular bulb packing 94 is provided along the opening edge portion 66. Thus, the space between the bulb lamp 90 and the lamp holder 60 can be waterproofed.

4A and 4B are diagrams showing an external configuration of the LED lamp 1, in which FIG. 4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a bottom view. FIG. 5 is an exploded front view showing the LED lamp 1. FIG. 6 is a cross-sectional view showing the internal configuration of the LED lamp 1.
As shown in these drawings, the LED lamp 1 is configured to have substantially the same shape and optical characteristics as an existing light bulb, and can be used as an alternative to an existing light bulb.

That is, the LED lamp 1 has a cylindrical body portion 2 formed of a material having high thermal conductivity, and a cylindrical insulating portion formed of a material having insulating properties is provided at a terminal end 2A (FIG. 6). A cylindrical portion 10 is provided, and a base 3 that can be attached to an existing socket (for example, E26 type socket) is provided at a terminal end 10A of the insulating cylindrical portion 10. Specifically, the base 3 includes a cylindrical shell 5 that is threaded to be screwed into an existing socket, and an eyelet 7 that is provided on the top of the end of the shell 5 via an insulating portion 6. It has. As shown in FIGS. 5 and 6, an electric circuit board 8 on which an electric circuit such as a lighting circuit is mounted is built in the body portion 2 and the insulating cylinder portion 10, and the shell 5 and the eyelet 7 of the base 3 are provided. The lead wires 9 </ b> A and 9 </ b> B are electrically connected to the electric circuit board 8 to supply electric power from the socket 65 to the electric circuit board 8. In this way, the insulating cylinder part 10 is connected to the body part 2 and the shell 5 is provided on the insulating cylinder part 10 so that the shell 5 and the body part 2 can be insulated, and the body part 2 has conductivity. However, electrical insulation between the shell 5 of the base 3 and the body portion 2 can be easily achieved.
In FIG. 5, reference numeral 26 denotes an O-ring, reference numeral 27 denotes a fixed bush, and reference numeral 28 denotes an insulating sheet.

An engagement convex portion 2 </ b> B that protrudes inward in the radial direction of the body portion 2 is formed at the terminal end 2 </ b> A of the body portion 2. An annular engagement recess 10 </ b> B that is recessed toward the inner surface is formed on the outer peripheral surface in the vicinity of the opening end of the insulating cylinder portion 10. Further, an abutting portion 10 </ b> C that abuts on the inner peripheral surface of the body portion 2 and the engaging convex portion 2 </ b> B is formed at the opening end of the insulating cylinder portion 10.
The body part 2 and the insulating cylinder part 10 are formed by two-color molding at the time of resin molding, and the engagement convex part 2B is engaged with the engagement concave part 10B and the contact part 10C is in contact with the body part 2, whereby the body While the joining part of the part 2 and the insulation cylinder part 10 becomes what is called a labyrinth shape, the area of this joining part is large. For this reason, while being able to join firmly the junction part of the trunk | drum 2 and the insulation cylinder part 10, the waterproofness of this junction part can be improved effectively.

A reinforcing plate portion 30 is provided at an intermediate portion in the axial direction of the insulating cylinder portion 10 so as to partition the inside of the insulating cylinder portion 10 into the body portion 2 and the eyelet 7. The reinforcing plate portion 30 is formed in a plate shape substantially orthogonal to the axial direction of the insulating cylinder portion 10, and wiring holes 31 </ b> A and 31 </ b> B that penetrate the reinforcing plate portion 30 are formed in the reinforcing plate portion 30. An introduction hole 32 having a diameter increasing toward the body 2 side is formed on the surface of the wiring hole 31A, 31B on the body 2 side.
The lead wires 9A and 9B are connected to the end of the electric circuit board 8 on the base 3 side, and are connected to the shell 5 and the eyelet 7 through the wiring holes 31A and 31B, respectively.

  The lead wire 9 </ b> A passes through the wiring hole 31 </ b> A, then bends in the vicinity of the terminal end 10 </ b> A of the insulating cylinder portion 10, extends outward, and is connected to the shell 5. After the lead wire 9B passes through the wiring hole 31B, it extends to the eyelet 7 side as it is and is connected to the eyelet 7. Thus, since the wiring holes 31A and 31B through which the lead wires 9A and 9B pass are provided, the lead wires 9A and 9B can be prevented from being entangled with each other, and a short circuit between the lead wires 9A and 9B can be prevented. Further, by guiding with the introduction hole 32, the lead wires 9A, 9B can be easily passed through the wiring holes 31A, 31B.

FIG. 7 is an enlarged view of the terminal end 10 </ b> A of the insulating cylinder portion 10.
On the outer peripheral surface of the terminal end 10 </ b> A of the insulating cylinder portion 10, a screw portion 33 that engages with the inner peripheral surface of the shell 5 is formed. Further, a wiring groove 34 extending in the axial direction of the insulating cylinder portion 10 is formed on the outer peripheral surface of the terminal end 10 </ b> A, and the wiring groove 34 is provided so as to be carved into a part of the screw portion 33. The lead wire 9A that is bent from the inside of the insulating cylinder portion 10 and extends outward is embedded in the wiring groove 34 and extends toward the body portion 2 side. That is, in a state where the shell 5 is attached to the insulating cylinder portion 10, the lead wire 9 </ b> A passes through the wiring groove 34 inside the shell 5 and is joined to the outer peripheral surface of the shell 5 in the vicinity of the open end of the shell 5.
Further, the wiring groove 34 through which the lead wire 9A passes is connected to the inside of the insulating cylinder part 10, and the inside of the insulating cylinder part 10 communicates with the eyelet 7 and the body part 2 via the wiring holes 31A and 31B. Yes. For this reason, air can enter / exit into the body part 2 through the wiring groove 34 and the wiring holes 31 </ b> A and 31 </ b> B, and it is possible to prevent condensation from forming in the body part 2.

  Here, the shell 5 is fixed by being caulked to the insulating cylinder portion 10 from the outer peripheral side in the vicinity of the reinforcing plate portion 30 while being engaged with the screw portion 33 of the insulating cylinder portion 10. In the first embodiment, the insulating tube portion 10 has the reinforcing plate portion 30 and particularly the strength of the insulating tube portion 10 in the radial direction is increased, so that the deformation of the insulating tube portion 10 due to the caulking of the shell 5 is prevented. In addition, a large caulking force can be applied to the shell 5, and the shell 5 can be securely caulked.

  A light emitting portion 12 is provided at a tip 2C (FIGS. 2 and 6) opposite to the base 3 in the body portion 2. The light emitting unit 12 includes a base plate 13, and a large number of LEDs 15 (light emitting elements) are provided on the upper surface of the base plate 13 as light emitting elements. The base plate 13 is a substantially disk-shaped member having a larger diameter than that of the body portion 2 when viewed from above, and the front end 2C of the body portion 2 is connected to the back surface thereof as shown in FIG. The base plate 13, the body portion 2, and the insulating cylinder portion 10 are integrally formed and constitute a housing 35 of the LED lamp 1.

FIG. 8 is a plan view of the base plate 13.
As shown in the figure, in the surface of the base plate 13, corresponding to the connecting part of the body part 2, a substantially circular shape (together with the body part 2 and the body part 2) for inserting the electric circuit board 8 into the body part 2. An insertion opening 14 having substantially the same diameter) is formed.
The electric circuit board 8 is a board on which various electric circuits including a lighting circuit (power supply circuit) of the LED 15 are mounted. As shown in FIG. 6, the electric circuit board 8 has a length extending from the distal end 2C of the body part 2 to the reinforcing plate part 30, The body portion 2 is formed to have a front-view shape that engages with the hollow shape.

  The diameter R (FIG. 6) of the body portion 2 is formed to be approximately the same as the lateral width of the electric circuit board 8. As shown in FIG. 8, the fixing groove portion 51 </ b> A and the inner peripheral surface of the body portion 2 are formed. An abutting piece 51B facing the fixing groove 51A is provided, and the electric circuit board 8 has one side engaged with the fixing groove 51A and the other side abutted against the side surface of the abutting piece 51B. To be fixed in the body part 2.

  The LED 15 is formed, for example, by packaging an LED element. In the present embodiment, a white LED is used as the LED 15. Needless to say, an LED having a light emitting color other than white may be used for the LED 15. As shown in FIG. 4, the LEDs 15 are arranged on the LED substrate 16, which is a disc-shaped circuit board, in a substantially concentric circle at regular intervals. The number and arrangement of the LEDs 15 arranged on the LED substrate 16 can be any arrangement as long as necessary illuminance is ensured and illuminance unevenness does not occur.

The LED substrate 16 is attached to the base plate 13 by being screwed and fixed, and a lead wire lead-out opening 17 is formed at substantially the center thereof. As shown in FIG. 4, power supply anode and cathode lead wires 18 are drawn out from the electric circuit board 8 mounted on the body portion 2 through a lead wire lead-out opening 17 and formed on the upper surface of the LED board 16. Is electrically connected to the circuit pattern 80, and power is supplied to each LED 15 through the circuit pattern.
The electrical connection structure between the electric circuit board 8 and the LED board 16 is not limited to the lead wire 18, but is a socket that engages and conducts with the upper end of the electric circuit board 8 and the back surface of the LED board 16. It is good also as a structure which provides and electrically connects. Moreover, it is good also as a structure which joins the electrical circuit board | substrate 8 directly to the back surface of the LED board 16, and is electrically connected.

  As shown in FIGS. 4 and 6, the base plate 13 has a tray shape having a side wall 19 along the periphery, and a cover 22 that covers the LED substrate 16 is screwed onto the inner peripheral surface of the side wall 19. Yes. The light emitting unit 12 is provided with an annular reflector 21 so that the light ray component Sa (FIG. 6) shielded from each LED 15 toward the side wall 19 is taken out from the cover 22 and can be used for illumination. The reflector 21 is formed with a reflecting surface 21 </ b> A that is arranged along the circumference of the base plate 13 so as to surround each LED 15 and reflects the light ray component Sa incident from the LED 15 toward the cover 22. By providing the reflector 21, the instrument efficiency of the LED lamp 1 is improved, and the spread of light in the horizontal direction (direction parallel to the surface of the LED substrate 16) is suppressed.

The LED lamp 1 is configured as a high output type lamp by using a high output type for each LED 15. For this reason, if no measures are taken, the LED temperature rises due to the heat generated by each LED 15, leading to a decrease in the life of the LED 15 and a decrease in the amount of light. Therefore, in the LED lamp 1 of the present embodiment, heat dissipation is improved as follows.
That is, in this embodiment, since the base plate 13 to which the LED substrate 16 is attached is configured in a disk shape having a size on which the LED substrate 16 can be placed, for example, the edge of the LED substrate 16 is supported. Compared with a simple configuration, the contact area with the base plate 13 is increased. Thereby, this contact area can be made into 50% or more of LED board 16, for example, and sufficient heat transfer amount from LED board 16 to base board 13 can be secured.
Further, as shown in FIGS. 5 and 6, an LED board heat dissipation sheet 20 having an area equal to or smaller than the LED board 16 is sandwiched between the LED board 16 and the base plate 13, and the LED 15 generates heat. It is efficiently guided to the base plate 13 through the LED board 16 and the LED board heat dissipation sheet 20. In addition, it is good also as a structure which coat | covers resin which consists of an elastic material which has heat dissipation performance for required thickness on the back surface of LED board 16, and is integrated, without using the heat sink sheet 20 for LED boards. The insulation performance may be imparted to the coating on the back surface of the LED board heat radiation sheet 20 or the LED board 16.

In the first embodiment, both the base plate 13 and the body portion 2 are integrally formed from a material having high thermal conductivity. Therefore, since the thermal resistance between the base plate 13 and the body portion 2 is suppressed, the heat guided to the base plate 13 can be transmitted to the body portion 2 with less loss, and heat dissipation can be improved.
As a material of the base plate 13 and the body part 2, a metal material such as aluminum or a heat conductive resin can be suitably used. In particular, by forming from the heat conductive resin, the LED lamp 1 can be lighter than when the base plate 13 and the body portion 2 are formed of a metal material such as aluminum. Since the number of sheets can be increased, the surface area can be increased and the heat dissipation can be improved more efficiently. As such a heat conductive resin, a resin material having a heat conductivity of 2 W / mK or more and excellent heat conductivity is preferable. For example, a polycarbonate resin containing carbon fiber can be suitably used. In order to support the weight of the LED lamp 1 even when the LED lamp 1 is mounted on an existing socket or an existing holder as an alternative to a light bulb by reducing the weight of the body 2 and the base plate 13 using a heat conductive resin. There is no need to reinforce existing sockets or existing holders or members, and they can be used as they are.

  A large number of plate-like heat radiation fins 25 extending radially from the front end 2 </ b> C to the end end 2 </ b> A are erected on the outer peripheral surface of the body portion 2 centering on the axis of the body portion 2. The heat is radiated from each heat radiating fin 25. Each radiating fin 25 has a fin end 25 </ b> A connected to the back surface 13 </ b> A of the base plate 13, and the radiating fin 25, the body portion 2, and the base plate 13 are integrally formed. As a result, the heat transmitted to the body portion 2 is radiated from the radiation fins 25 without loss, and heat is also transmitted directly from the base plate 13 to the radiation fins 25, so that the heat dissipation can be enhanced.

  Further, as shown in FIG. 6, the diameter R of the body portion 2 is formed small enough to accommodate the built-in electric circuit board 8 (about the width of the electric circuit board 8). A contact area can be ensured and the amount of heat transfer between the LED substrate 16 and the base plate 13 can be increased. In addition to this, since the difference in diameter between the base plate 13 and the body portion 2 also increases, the fin end portion 25A of the radiating fin 25 has a length extending from the body portion 2 to the edge portion (side wall 19) of the base plate 13. The contact area between the fin end 25A and the back surface 13A is also increased, and more heat can be guided to the radiation fins 25 and dissipated. Since the amount of heat transfer to the radiation fins 25 is ensured in this way, the radiation performance can be sufficiently maintained even if the thickness of the radiation fins 25 is reduced to, for example, 2.5 mm or less. The weight can be reduced by that amount.

The radiating fins 25 are disposed at positions where the fin end portions 25B on the base 3 side are separated from the base 3 by the distance L toward the base plate 13 (on the front side). As a result, the section 45 (hereinafter referred to as “finless section”) 45 having a distance L from the base 3 to the body portion 2 and the insulating cylinder section 10 does not have the radiation fin 25. It is difficult to transmit 25 heat.
Moreover, since the electric circuit board 8 is formed in a length extending from the reinforcing plate part 30 of the insulating cylinder part 10 to the tip 2C of the body part 2, in the state where it is mounted on the body part 2, as shown in FIG. The end part 8A of the electric circuit board 8 is located in the vicinity of the base 3 and the mounting parts of the electric circuit board 8 are arranged at least at positions corresponding to the body part 2 and the finless section 45 of the insulating cylinder part 10. As described above, in the finless section 45, the influence of heat from the heat radiation fin 25 is small. Therefore, on the electric circuit board 8, the electric circuit component 52 which is easily affected by heat (should be protected from heat) is disposed at a position corresponding to the finless section 45, and is not easily affected by heat ( By disposing the electric circuit component 53 in a place other than the finless section 45, the electric circuit component 52 is protected from the heat of the radiation fin 25.

  As shown in FIGS. 4 to 6, in the LED lamp 1, the shape of the fin end portion 25 </ b> B of the heat radiating fin 25 is formed in a straight line substantially perpendicular to the axis of the body portion 2. The fin end portions 25B are at substantially the same position in the axial direction of the body portion 2. Therefore, when the LED lamp 1 is mounted on the lamp holder 60, each fin end portion 25 </ b> B comes into contact with the opening edge 66 of the holder housing 62 of the lamp holder 60. The side view shape of the radiating fin 25 is formed in a substantially fan shape that draws a gentle arc from the back surface 13 </ b> A of the base plate 13 toward the opening edge 66 of the holder housing 62, and the LED lamp 1 is mounted on the lamp holder 60. In the mounted state, the sense of unity is enhanced and the design is enhanced.

Now, since this lamp holder 60 is installed outdoors, in order to protect the connection portion between the socket 65 and the LED lamp 1, it is necessary to waterproof the holder housing 62 so that water does not enter from the opening edge portion 66. There is. As described above, if the mounting target is the light bulb lamp 90 (FIG. 3), it can be waterproofed by interposing the light bulb packing 94 between the light bulb lamp 90 and the opening edge portion 66.
On the other hand, in the LED lamp 1, since the plate-like radiating fins 25 are erected radially on the outer peripheral surface of the body portion 2, there are gaps between the radiating fins 25, and the opening edge portion 66. If only the light bulb packing 94 is provided along the line, water enters the holder housing 62. Therefore, in the first embodiment, an annular waterproof packing 70 that closes the opening of the lamp holder 60 is provided on the fin end portion 25B side of the radiation fin 25 of the LED lamp 1.

  As shown in FIG. 2, the outer peripheral surface of the body portion 2 is formed in a conical shape that tapers toward the base 3 from the front end 2 </ b> C to the end 2 </ b> A. The intermediate portion has a tapered conical portion 40 (intermediate portion) that tapers toward the base 3 side, and the annular waterproof packing 70 is fitted and attached to the conical portion 40.

FIG. 9 is a view showing the annular waterproof packing 70, FIG. 9 (A) is a plan view, and FIG. 9 (B) is a sectional view taken along line IX-IX in FIG. 9 (A). FIG. 10 is an enlarged view of the vicinity of the annular waterproof packing 70 in FIG.
As shown in FIG. 1, FIG. 2, FIG. 9 and FIG. 10, the annular waterproof packing 70 is formed in a disc shape having a size covering the entire opening edge 66 of the holder housing 62, and the fin end portion 25B. And an opening edge portion 66 of the holder housing 62, and a conical hole 72 (inner peripheral portion) provided in the center of the annular waterproof packing 70 through which the body portion 2 is inserted. is doing. The annular waterproof packing 70 is made of rubber, and here, silicon rubber is used.
The packing body 71 has, on its outer peripheral portion 78, a flange portion 71A that contacts the end surface of the opening edge portion 66, and an outer peripheral surface 71B that continues to the flange portion 71A and contacts the inner peripheral surface of the opening edge portion 66. ing. The packing body 71 has an upper surface 71C facing the fin end portion 25B.

On the upper surface 71 </ b> C, an annular groove 73 that makes a round of the packing body 71 is formed inside the outer edge of the packing body 71. Further, a drainage groove 74 (drainage part) that extends outward in the radial direction and communicates the annular groove part 73 with the outer peripheral surface of the packing body 71 is formed on the upper surface 71C. A plurality of drain grooves 74 are provided at substantially equal intervals in the circumferential direction of the packing body 71. In addition, a weight reducing recess 77 is formed on the surface of the packing body 71 opposite to the upper surface 71C, whereby the weight of the annular waterproof packing 70 is reduced.
A plurality of annular outer peripheral lip portions 75 projecting in the radial direction are provided on the outer peripheral surface 71B, and the sealing performance is improved.

  The inner peripheral surface of the conical hole 72 is formed in a conical shape having a taper that tapers toward the socket 65 when assembled to the holder housing 62. An annular lip 76 projecting radially inward is formed on the inner peripheral surface of the conical hole 72, and a plurality of lip portions 76 are formed in the axial direction of the conical hole 72. The surface of is bellows-like. The conical hole 72 and the conical portion 40 of the body portion 2 are set at substantially equal taper angles. Here, in FIG. 10, the outer peripheral lip 75 and the lip 76 are deformed and come into contact with the contact surface, and therefore the shape before deformation is indicated by a two-dot chain line.

When attaching the LED lamp 1 to the lamp holder 60, first, the annular waterproof packing 70 is fitted to the conical part 40 of the body part 2 through the conical hole 72, and then the LED lamp 1 is attached to the lamp holder 60. The annular waterproof packing 70 is inserted into the opening edge 66 of the holder housing 62, the base 3 is set in the socket 65, and the base 3 is screwed into the socket 65 by rotating and tightening the LED lamp 1. Just do it.
In this way, the conical portion 40 that tapers toward the end 2A of the body portion 2 and the conical hole 72 of the annular waterproof packing 70 are fitted, so that the annular waterproof packing 70 is attached to the lamp holder by the tapered inclined surface of the conical portion 40. 60, the annular waterproof packing 70 can be prevented from being detached from the lamp holder 60, and the waterproof property between the LED lamp 1 and the lamp holder 60 can be improved.
Further, by fitting the conical hole 72 of the annular waterproof packing 70 into the conical portion 40, the LED lamp 1 can be positioned in the radial direction of the lamp holder 60, and the LED lamp 1 can be configured with a simple configuration without using a dedicated positioning member. Can be positioned.

In the state in which the base 3 is completely screwed into the socket 65, the LED lamp 1 enters the conical portion 40 to a depth that slightly deforms the conical hole 72 including the lip portion 76 outward in the radial direction. 71, the outer peripheral surface 71B is pressed against the inner peripheral surface of the holder housing 62, and the flange portion 71A is pressed against the opening edge 66. Thus, since the conical part 40 is fitted to a depth that slightly deforms the conical hole 72 radially outward, the sealing performance between the conical part 40 and the conical hole 72 can be improved, and the body part 2 and the packing body 71 Can improve the waterproofness between. Further, the flange portion 71A of the packing main body 71 is pressed against the opening edge portion 66 by the conical portion 40, and the outer peripheral surface 71B including the outer peripheral lip portion 75 is pressed against the inner peripheral surface of the holder housing 62. The sealing property between the holder housing 62 and the annular waterproof packing 70 and the lamp holder 60 can be improved.
Further, in the LED lamp 1, when the base 3 is completely screwed into the socket 65, the packing body 71 is moved between the fin end 25 </ b> B and the opening edge 66 by the fastening force between the base 3 and the socket 65. It is set to be pressed. For this reason, the packing main body 71 can be brought into close contact between the radiating fin 25 and the opening edge portion 66, and the waterproof property between the annular waterproof packing 70 and the lamp holder 60 can be improved.

  The liquid that has entered between the heat radiating fins 25 is prevented from entering the lamp holder 60 by the annular waterproof packing 70, flows through the annular groove 73 formed on the upper surface 71 </ b> C of the annular waterproof packing 70, and passes through the drain groove 74. Discharged outside. In this way, since the liquid that has flowed into the annular groove 73 on the upper surface of the annular waterproof packing 70 is discharged to the outside from the plurality of drain grooves 74, it is possible to prevent liquid and dust from accumulating in the annular waterproof packing 70 for a long period of time. The waterproofness of the annular waterproof packing 70 can be maintained well.

  As described above, according to the first embodiment to which the present invention is applied, the middle part of the body part 2 between the heat dissipating fins 25 and the base 3 provided at the connection part of the body part 2 with the light emitting part 12. However, it has a conical portion 40 that tapers toward the terminal end 2A of the body portion 2, and an inner peripheral portion of the annular waterproof packing 70 has a conical hole 72 so that it can be fitted into the cone portion 40 of the body portion 2. When the packing 70 is mounted, the conical hole 72 is fitted into the conical portion 40, and the outer peripheral surface 71B of the annular waterproof packing 70 is engaged with the opening edge 66 of the lamp holder 60 to form a waterproof structure, and taper toward the end 2A. Since the conical portion 40 and the conical hole 72 are fitted, the annular waterproof packing 70 is pressed against the opening edge 66 side of the lamp holder 60 by the conical portion 40, so that the annular waterproof packing 70 is detached from the lamp holder 60. Can be prevented. For this reason, it is possible to prevent liquid flowing from the radiating fin 25 side to the annular waterproof packing 70 side from entering between the annular waterproof packing 70 and the opening edge portion 66 and the body portion 2 of the lamp holder 60. The waterproofness between the holder 60 and the holder 60 can be improved.

Further, since the outer peripheral surface 71B of the annular waterproof packing 70 is pressed against the opening edge 66 of the lamp holder 60 by the fin end portion 25B and is crushed, the waterproof property between the annular waterproof packing 70 and the lamp holder 60 can be improved.
Further, since the annular lip portion 76 protruding radially inward is formed in the conical hole 72 of the annular waterproof packing 70, the sealing property between the conical hole 72 and the conical portion 40 can be improved, and the waterproof property can be improved. .
Furthermore, the liquid that has flowed to the annular waterproof packing 70 can be drained to the outer peripheral surface side of the annular waterproof packing 70 via the annular groove 73 and the drain groove 74, and the waterproof property of the annular waterproof packing 70 can be maintained in a good state.

In addition, the said 1st Embodiment shows the one aspect | mode which applied this invention, Comprising: This invention is not limited to the said embodiment.
In the first embodiment, the outer peripheral surface 71B of the annular waterproof packing 70 has been described as being crushed by being pressed against the opening edge 66 of the lamp holder 60 by the fin end 25B, but the present invention is not limited to this. The fin end portion 25 </ b> B escapes upward so as not to contact the annular waterproof packing 70, and the annular waterproof packing 70 is pressed against the opening edge 66 through the conical hole 72 only by the cone portion 40. May be fixed.
Moreover, in the said 1st Embodiment, although the radiation fin 25 was demonstrated as what is provided in the outer peripheral surface of the fuselage | body part 2 centering on the axis line of the fuselage | body part 2, as shown in FIG. May be. In the example shown in FIG. 11, the radiating fins 525 are formed in a plate shape having a plane parallel to a plane extending in parallel with the axis of the body part 2, and are arranged parallel to each other and at substantially equal intervals. The base plate 13 is erected from the back surface 13A toward the terminal end 2A. The annular waterproof packing 70 is pressed against the opening edge 66 side of the lamp holder 60 by the conical portion 40, and the annular waterproof packing 70 is pressed against the opening edge 66 by the fin end portion 525B. The waterproofness between the holder 60 and the holder 60 can be improved.

Second Embodiment
Hereinafter, a second embodiment to which the present invention is applied will be described with reference to FIG. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In 1st Embodiment, although the cone part 40 of the trunk | drum 2 fits in the conical hole 72 of the cyclic | annular waterproof packing 70, it demonstrated as that in which the waterproofness between the trunk | drum 2 and the cyclic | annular waterproof packing 70 is improved. In the second embodiment, a configuration for waterproofing by pressing the upper surface of the waterproof packing will be described.

FIG. 12 is a cross-sectional view showing the internal configuration of the LED lamp device 200 of the second embodiment.
As shown in FIG. 12, the LED lamp device 200 (lamp device) includes an LED lamp 201 (lamp), a lamp holder 60, and an annular waterproof packing 270 interposed between the LED lamp 201 and the lamp holder 60. It is configured with.
The LED lamp 201 has a body part 202 extending from the base plate 13 to the base 3, and the diameter of the body part 202 is located below the body part 202 between the heat radiation fin 25 and the base 3, that is, the fin end part 25 </ b> B. A step portion 240 protruding outward in the direction is provided. The step portion 240 is a step portion that extends outward so as to be substantially orthogonal to the axis of the body portion 202, and is provided so as to go around the outer periphery of the body portion 202.

A substantially circular cylindrical portion 241 (intermediate portion) that is continuous with the lower surface of the stepped portion 240 and extends to the base 3 side substantially parallel to the axis of the trunk portion 202 is formed in the middle portion of the trunk portion 202. The annular waterproof packing 270 is attached to the LED lamp 201 by fitting into the cylindrical portion 241.
The annular waterproof packing 270 is formed with a fitting hole 272 (inner peripheral portion) that fits into the cylindrical portion 241. The fitting hole 272 is formed at the center in the radial direction of the annular waterproof packing 270, and is formed in a substantially perfect circle extending substantially orthogonal to the upper surface 71C.

  In a state where the LED lamp 201 is attached to the lamp holder 60, the annular waterproof packing 270 is pressed against the opening edge 66 side by the step portion 240. For this reason, it is possible to prevent the annular waterproof packing 270 from coming off and to improve the waterproofness between the flange portion 71A and the opening edge portion 66. Further, since the lower surface of the stepped portion 240 is in close contact with the upper surface 71C of the peripheral edge portion of the fitting hole 272, the waterproof property between the fitting hole 272 and the body portion 202 can be improved. Furthermore, since the fitting hole 272 is fitted into the cylindrical portion 241, the LED lamp 201 can be easily positioned in the radial direction of the lamp holder 60.

  As described above, according to the second embodiment to which the present invention is applied, the stepped portion is formed on the body portion 202 between the heat radiation fin 25 and the base 3 provided at the connection portion of the body portion 202 with the light emitting portion 12. 240 is provided, the intermediate portion on the end 2A side from the step portion 240 has a substantially circular cylindrical portion 241, and the fitting hole 272 of the annular waterproof packing 270 is formed to be fitted to the cylindrical portion 241 of the body portion 202. When the annular waterproof packing 270 is attached, the annular waterproof packing 270 is held between the lower surface of the stepped portion 240 and the opening edge portion 66 of the lamp holder 60, and the fitting hole 272 is fitted into the cylindrical portion 241. The outer peripheral surface 71B of the annular waterproof packing 270 engages with the opening edge portion 66 of the lamp holder 60 to form a waterproof structure, and the annular waterproof packing 270 is pressed against the opening edge portion 66 by the step portion 240. Kin 270 can be prevented from being removed from the lamp holder 60. For this reason, it is possible to prevent liquid flowing from the radiating fin 25 side to the annular waterproof packing 270 side from entering between the annular waterproof packing 270, the opening edge portion 66, and the body portion 202. The waterproofness between can be improved.

  Moreover, as shown in FIG. 13, you may provide the step part 540 which goes around the outer periphery of the trunk | drum 2 above the cone part 40 of 1st Embodiment. In this case, the annular waterproof packing 70 is pressed against the opening edge portion 66 side of the lamp holder 60 by the conical portion 40, and the annular waterproof packing 70 is pressed against the opening edge portion 66 by the lower surface of the step portion 540, whereby the LED lamp 1. The waterproofness between the lamp holder 60 and the lamp holder 60 can be improved. Further, since the lower surface of the stepped portion 540 is in close contact with the upper surface 71C of the annular waterproof packing 70, the liquid can be prevented from entering the conical hole 72 side, so that the waterproof property can be further improved.

<Third Embodiment>
A third embodiment to which the present invention is applied will be described below with reference to FIG. In the third embodiment, parts similar to those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In 1st Embodiment, although the cone part 40 of the trunk | drum 2 fits in the conical hole 72 of the cyclic | annular waterproof packing 70, it demonstrated as that in which the waterproofness between the trunk | drum 2 and the cyclic | annular waterproof packing 70 is improved. In the third embodiment, a configuration for waterproofing using the light bulb packing 94 described in FIG. 3 will be described.

FIG. 14 is a cross-sectional view showing the internal configuration of the LED lamp device 300 of the third embodiment.
As shown in FIG. 14, the LED lamp device 300 includes an LED lamp 301, a lamp holder 60, and a light bulb packing 94 interposed between the LED lamp 301 and the lamp holder 60. .
The LED lamp 301 has a body part 2, and an insulating cylinder part 10 is provided at the terminal end 2 </ b> A, and a base 3 is provided in the insulating cylinder part 10.

  A plurality of plate-like heat radiation fins 325 are provided on the outer peripheral surface of the body portion 2 so as to stand from the back surface 13A of the base plate 13 toward the terminal end 2A. The radiating fins 325 are formed in a plate shape having a surface parallel to a surface extending in parallel with the axis of the body portion 2 and are arranged at substantially equal intervals. A pressing plate 340 extending outward from the outer peripheral surface of the body portion 2 is connected to the fin end portion 325 </ b> B of the radiating fin 325. The pressing plate 340 is formed in a disk shape substantially parallel to the base plate 13, and is disposed in the intermediate portion in the axial direction of the body portion 2. The outer diameter of the pressing plate 340 is formed so as to be able to press the bulb packing 94 over the entire surface.

In a state where the LED lamp 301 is attached to the lamp holder 60, a light bulb packing 94 is interposed between the lower surface of the pressing plate 340 and the opening edge portion 66 of the lamp holder 60. The light bulb packing 94 is interposed in a state of being crushed by the fastening force between the base 3 and the socket 65, and a sealing property is ensured.
The inner edge portion of the pressing plate 340 is connected to the outer peripheral surface of the body portion 2, and the liquid that has entered between the radiating fins 325 cannot flow from the inner edge portion side of the pressing plate 340 to the base 3 side. It is discharged from the outer edge of 340 to the outside. That is, in the third embodiment, the waterproofness can be secured by providing the light bulb packing 94 between the pressing plate 340 and the opening edge portion 66, and it is not necessary to provide the waterproof packing between the body portion 2. The number of places where waterproofing is required is reduced, and waterproofness can be improved.
As described above, the pressure plate 340 having a size capable of pressing the light bulb packing 94 over the entire body is provided in the body portion 2, so that the LED lamp device 300 can be waterproofed using the light bulb packing 94, and the LED There is no need to use a dedicated waterproof packing for the lamp 301. For this reason, the light bulb lamp 90 can be easily replaced with the LED lamp 301.

In addition, the said 3rd Embodiment shows the one aspect | mode which applied this invention, Comprising: This invention is not limited to the said embodiment.
In the third embodiment, the pressing plate 340 is described as being connected to the fin end portion 325B. However, the present invention is not limited to this, and the pressing plate 340 is disposed below the fin end portion 325B. It may be provided separately.
Further, as shown in FIG. 15, a curved surface portion 340A having substantially the same shape as the base portion 90A (FIG. 3) of the bulb lamp 90 is formed at the lower portion of the pressing plate 340, and the bulb packing 94 is pressed by the curved surface portion 340A. You may comprise. In this case, the bulb packing 94 can be more appropriately pressed by the curved surface portion 340A formed corresponding to the shape of the bulb packing 94, and the waterproofness can be improved.
Moreover, although the radiation fin 325 was demonstrated as what is plate shape which has a surface parallel to the surface extended in parallel with the axis line of the trunk | drum 2, it is not limited to this. For example, as in the first embodiment, it may be formed in a plate shape extending radially about the axis of the body portion 2, or as shown in FIG. 16, a circular plate parallel to the base plate 13 A plurality of radiating fins 625 may be arranged from the base plate 13 side toward the end 2A side, and the pressing plate 340 may be provided below the radiating fin 625 on the most end 2A side. Further, the radiating fin 625 on the most end 2A side may be used as a pressing plate.
In addition, as shown in FIG. 17, an annular waterproof packing 70 is used instead of the light bulb packing 94, and the annular waterproof packing 70 is pressed against the opening edge 66 side of the lamp holder 60 by the conical portion 40, and the pressing plate 340. By pressing the annular waterproof packing 70 against the opening edge 66, the waterproof property between the LED lamp 1 and the lamp holder 60 can be improved. Further, since the pressing plate 340 is in close contact with the upper surface 71 </ b> C of the annular waterproof packing 70, the liquid can be prevented from entering the conical hole 72, thereby further improving the waterproofness.

<Fourth embodiment>
Hereinafter, a fourth embodiment to which the present invention is applied will be described with reference to FIG. In the fourth embodiment, parts similar to those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In the first embodiment, the annular waterproof packing 70 has been described as having the flange portion 71 </ b> A that contacts the opening edge portion 66 and the outer peripheral surface 71 </ b> B. However, in the fourth embodiment, the annular waterproof packing 470 is the outer periphery of the opening edge portion 66. A configuration that also contacts the surface will be described.

FIG. 18 is an enlarged cross-sectional view of the engaging portion of the annular waterproof packing 470 of the fourth embodiment.
As shown in FIG. 18, in addition to the flange portion 71A and the outer peripheral surface 71B, the annular waterproof packing 470 has an annular outer seal portion 71D that protrudes substantially parallel to the outer peripheral surface 71B on the outer peripheral side from the outer peripheral surface 71B. ing. By providing the outer peripheral surface 71B, the flange portion 71A, and the outer seal portion 71D in succession, the outer peripheral portion 78 of the annular waterproof packing 470 is formed with an annular groove 471 with which the opening edge portion 66 is engaged. The outer peripheral surface 66 is also covered with the outer seal portion 71D.
Thus, since the annular waterproof packing 470 covers the outer peripheral surface of the opening edge 66, the waterproof property between the annular waterproof packing 470 and the opening edge 66 can be further improved. Further, since the outer seal portion 71D is provided, the rigidity of the annular waterproof packing 470 is increased, and deformation of the annular waterproof packing 470 due to the influence of an external force or the like can be prevented, so that the waterproof property can be improved.

1,201 LED lamp (lamp)
2, 202 body part 2A termination 3 base 12 light emitting part 15 LED (light emitting element)
25, 325, 525 Radiation fin 40 Conical part (intermediate part)
60 Lamp holder 66 Opening edge 70, 270, 470 Annular waterproof packing (waterproof packing)
72 Conical hole (inner circumference)
73 Annular groove 74 Drainage groove (drainage part)
76 Lip part 78 Outer peripheral part 100, 200 LED lamp device (lamp device)
240, 540 Step portion 241 Cylindrical portion (intermediate portion)
272 Fitting hole (inner circumference)

Claims (7)

A lamp that is attached to an opening of a lamp holder installed outdoors via a waterproof packing,
A light emitting unit that emits light by the light emitting element, a body unit that is connected to the light emitting unit, a heat dissipating fin that is provided at a connecting portion of the body unit with the light emitting unit, and a base that is provided at the end of the body unit. ,
An intermediate portion of the body portion between the heat radiating fin and the base is formed in a conical shape that tapers toward the terminal end, and an inner peripheral portion of the waterproof packing is formed in a conical shape so as to be fitted to the intermediate portion. When the waterproof packing is formed, the waterproof packing is fitted with an inner peripheral portion of the waterproof packing to the intermediate portion of the body portion, and an outer peripheral portion of the waterproof packing is engaged with an opening edge portion of the lamp holder. Lamp characterized by becoming.   The lamp according to claim 1, wherein the outer peripheral portion of the waterproof packing is crushed by being pressed against the opening edge portion of the lamp holder by the radiating fin.   The lamp according to claim 1 or 2, wherein an annular lip portion protruding radially inward is formed on the inner peripheral surface of the waterproof packing.   4. The water-proof packing according to claim 1, further comprising an annular groove portion that goes around the upper surface on the upper surface of the waterproof packing, and a drainage portion that communicates the annular groove portion with the outer peripheral surface of the waterproof packing. The lamp described. A lamp that is attached to an opening of a lamp holder installed outdoors via a waterproof packing,
A light emitting unit that emits light by the light emitting element, a body unit that is connected to the light emitting unit, a heat dissipating fin that is provided at a connecting portion of the body unit with the light emitting unit, and a base that is provided at the end of the body unit. ,
A step portion is provided in the body portion between the radiating fin and the base, an intermediate portion on the terminal side from the step portion is formed in a substantially circular cylindrical shape, and an inner peripheral portion of the waterproof packing is the cylindrical portion. The waterproof packing is sandwiched between the step part of the body part and the opening edge part of the lamp holder when the waterproof packing is attached, and the inner part of the waterproof packing is formed. A lamp having a waterproof structure in which a peripheral portion is fitted into the intermediate portion of the body portion, and an outer peripheral portion of the waterproof packing is engaged with an opening edge portion of the lamp holder. A lamp holder installed outdoors, and a lamp attached to the opening of the lamp holder via a waterproof packing,
The lamp is provided at a light emitting portion that emits light by a light emitting element, a body portion that is continuous with the light emitting portion, a heat dissipating fin provided at a connection portion of the light emitting portion of the body portion, and a terminal end of the body portion. With a base,
An intermediate portion of the body portion between the heat radiating fin and the base is formed in a conical shape that tapers toward the terminal end, and an inner peripheral portion of the waterproof packing is formed in a conical shape so as to be fitted to the intermediate portion. When the waterproof packing is formed, the waterproof packing is fitted with an inner peripheral portion of the waterproof packing to the intermediate portion of the body portion, and an outer peripheral portion of the waterproof packing is engaged with an opening edge portion of the lamp holder. The lamp device characterized by becoming. A lamp holder installed outdoors, and a lamp attached to the opening of the lamp holder via a waterproof packing,
The lamp is provided at a light emitting portion that emits light by a light emitting element, a body portion that is continuous with the light emitting portion, a heat dissipating fin provided at a connection portion of the light emitting portion of the body portion, and a terminal end of the body portion. With a base,
A step portion is provided in the body portion between the radiating fin and the base, an intermediate portion on the terminal side from the step portion is formed in a substantially circular cylindrical shape, and an inner peripheral portion of the waterproof packing is the cylindrical portion. It is formed so that it can be fitted into the middle part of the shape,
When the waterproof packing is mounted, the waterproof packing is sandwiched between the step portion of the body portion and the opening edge portion of the lamp holder, and the inner peripheral portion of the waterproof packing is fitted to the intermediate portion of the body portion. In addition, the outer periphery of the waterproof packing engages with the opening edge of the lamp holder to form a waterproof structure.

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