JP2013101852A - Lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-output lamp using a light-emitting element as a light source.SOLUTION: The lamp is provided with a plurality of flat-plate light source units 10 each having a mounting substrate 12 mounting light-emitting units 11 on a surface 13A of a base substrate 13. The light source units 10 are arrayed around a support body 20 with a rear face 13B of each base substrate 13 directed inward. Each light source unit 10 has a waterproof structure 14 for waterproofing the mounting substrate 12 on the surface 13A of the base substrate 13 and is equipped with a lead-out hole 17 for leading out lead wires on the rear face 13B of the base substrate 13, while the support body 20 is equipped with a lead-in hole 54 for leading in the lead wires from the lead-out hole 17 into inside the support body 20 as well as a housing body 30 for housing each lead wire led in. The lead-out hole 17 and the lead-in hole 54 are kept waterproof as the light source unit 10 and the support body 20 are tightly contacted to each other, and each lead wire housed in a housing body 30 is kept waterproof as it clogs the housing body 30.

Description

  The present invention relates to a lamp using a light emitting element such as an LED (Light Emitting Diode) or an organic EL (Electro Luminescence) as a light source.

  In recent years, with an increase in output and cost of an LED, which is a kind of semiconductor light-emitting element, a cap-type LED lamp that can be used as an alternative to a light bulb has been proposed and put into practical use (for example, see Patent Document 1). ).

JP 2010-010134 A

However, for example, a waterproof lamp used for a lamp installed outdoors such as a park or a street, and a high output type lamp such as an HID (High Intensity Discharge) lamp, an LED lamp suitable for use as an alternative is available. There is no current situation.
An object of the present invention is to solve the above-described problems of the conventional technology and provide a waterproof high-power type lamp using a light-emitting element as a light source.

  In order to achieve the above object, the present invention includes a plurality of flat light source units each having a mounting substrate on which a light emitting element is mounted on the surface of the base, and these light source units support the back of each base toward the inside. The light source units are arranged around the body, each light source unit has a waterproof structure for waterproofing the mounting substrate on the surface of the base body, and includes a lead-out hole for leading out a lead wire on the back surface of the base body. An introduction hole for introducing a lead wire from the lead-out hole into the inside of the support body; and a housing for accommodating each lead wire introduced, wherein the lead-out hole and the introduction hole are the light source unit and the support body. And each lead wire accommodated in the container is waterproofed by closing the container.

  Further, the present invention is characterized in that, in the lamp described above, a cap is provided in the housing, and the housing is closed by the cap.

  Moreover, the present invention is characterized in that, in the lamp described above, the introduction hole is provided in the housing.

  According to the present invention, a plurality of flat light source units having a mounting substrate on which a light emitting element is mounted on the surface of the base are provided, and these light source units are annularly formed around the support with the back surface of each base facing inward. Each of the light source units has a waterproof structure for waterproofing the mounting substrate on the surface of the base body, and includes a lead-out hole for leading out a lead wire on the back surface of the base body, and the support body extends from the lead-out hole. An introduction hole for introducing a lead wire into the inside of the support body; and a housing body for housing each introduced lead wire. The lead-out hole and the introduction hole allow the light source unit and the support body to be in close contact with each other. Since each lead wire accommodated in the container is waterproof by closing the container, a plurality of light source units can be arranged to correspond to a high output type lamp such as an HID lamp. Brightness And the waterproofing of each light source unit, and the waterproofing of each light source unit and the housing in which the lead wire of the light source unit is housed, and the waterproofing of the lead wire housed in the housing body be able to. In addition, it is possible to realize a waterproof structure for the mounting substrate of each light source unit, and to have a structure in which other portions including the back surface of the base of the light source unit are exposed to the outside air, so that a high cooling effect can be obtained. Thereby, it can be suitably used as a lamp used for a lighting device installed outdoors, particularly for use in illumination that requires high output light such as an HID lamp in brightness and size. A waterproof high-power type lamp can be provided.

It is a perspective view which shows the structure of the LED lamp which concerns on 1st Embodiment of this invention. It is a top view of the structure of an LED lamp. It is sectional drawing about the structure of an LED lamp. It is a disassembled perspective view of the structure of an LED lamp. It is a perspective view which shows the structure of a support body. It is a perspective view which shows the structure of a light source unit. It is a perspective view which removes a waterproof cover and shows the inside of a light source unit. It is a rear view of a light source unit. It is a perspective view which shows the structure of the LED lamp which concerns on 2nd Embodiment of this invention. It is a disassembled perspective view of an LED lamp.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
1-4 is a figure which shows the structure of the LED lamp 1 which concerns on this embodiment, FIG. 1 is a perspective view, FIG. 2 is a top view, FIG. 3 is sectional drawing, FIG. 4 is a disassembled perspective view.
As shown in FIG. 1, the LED lamp 1 is a die-type lamp having a base 40 using a LED 11 as an example of a light emitting element as a light source, and can be used with the base 40 mounted on an existing socket. Like the arc tube, it extends like a rod and emits radiated light almost uniformly from the entire periphery, and has a light output that can be used in place of a high-power type existing discharge lamp such as an HID lamp. The LED lamp 1 is waterproofed so that it can be used outdoors.

  However, while the discharge lamp is lit with AC power, the light emitting elements such as LEDs are lit with DC power. Therefore, when the LED lamp 1 using the LED 11 as a light source is lit with an AC commercial power supply, DC power is supplied to the LED lamp 1 through a power supply circuit that converts the commercial power supply into DC power. The LED lamp 1 of the present embodiment has a configuration in which a power supply circuit is provided on the socket side without incorporating a power supply circuit, and DC power is input from the socket through a base. In other words, when the LED lamp 1 is mounted on an existing lamp for a discharge lamp, the ballast included in the lamp is replaced with a power supply circuit.

Next, the configuration of the LED lamp 1 will be described in detail.
As shown in FIGS. 1 to 4, the LED lamp 1 includes the base 40, a support 20 that extends in a columnar shape perpendicular to the base 40, and a mounting body 35 that attaches the base 40 to the lower end of the support 20. And a plurality (three in the present embodiment) of light source units 10 supported around the support 20. The base 40 is of a screw type (rotating type) generally called an E type base such as E26 type or E39 type, and is configured according to the existing size, and is screwed into an existing socket and attached. It is possible. A direct current power is supplied to the base 40 through a socket (not shown) and supplied to each light source unit 10 in series. The base 40 may be a plug-in type.

FIG. 5 is a perspective view showing the configuration of the support 20.
The support body 20 is a member that supports the light source unit 10 and connects the lead wire 25 (see FIG. 3) extending between the light source unit 10 and the base 40 without exposing to the outside. And a column body 26.

  The container 30 has a substantially columnar shape, and a screw hole 24 for screwing the light source unit 10 is formed on the outer peripheral surface 32 of the container 30. Above the screw hole 24 (on the upper surface 31 side). An introduction hole 54 through which the lead wire 25 is drawn is formed at a position shifted to the position. The screw holes 24 are formed at equal intervals around the axis K which is the central axis of the container 30 by the number of the light source units 10 to be supported. That is, the light source units 10 are screwed into the respective screw holes 24 with the screws 22A, so that these light source units 10 are supported around the axis K at equal intervals. As will be described in detail later, the light source unit 10 has a substantially rectangular shape in plan view, and is supported in a cantilevered state in which the lower end is screwed with a screw 22A and extends upward substantially parallel to the axis K. Is done. Further, the other end portion on the upper end side of the light source unit 10 is supported on the column body 26 by screws 22B, whereby the light source unit 10 is supported on the support body 20 at the lower end side and both end portions on the upper end side.

  On the outer peripheral surface 32 of the container 30, the screw hole 24 and the introduction hole 54 can be closely attached to the back surface shape (planar shape in the present embodiment) of the light source unit 10 (planar surface in the present embodiment). Formed). Therefore, in a state where the light source unit 10 is screwed and supported in the screw hole 24, the back surface of the light source unit 10 covers the introduction hole 54 in a sealed state in which the light source unit 10 is in close contact with the periphery of the introduction hole 54. By pulling out the lead wire 25 from the back side and drawing it into the housing 30 through the opposing introduction hole 54, the lead wire 25 can be extended between the light source unit 10 and the housing 30 without being exposed to the outside.

  The column body 26 functions to supplement the support of the light source unit 10 that is cantilevered by the container 30, forms a column shape that extends along the axis K of the container, and is provided integrally with the axis K so as to be integrated therewith. It has been. The column body 26 is not supported in close contact with the entire back surface of the light source unit 10 but is supported so as to expose most of the back surface of the light source unit 10. Specifically, the column body 26 has a shape in which the ends of the substantially plate-like arms 21 corresponding to the number of the light source units 10 to be supported (three in the present embodiment) are coupled (substantially Y-shaped in this embodiment). Furthermore, each arm 21 has a shape extending radially around the axis K at equal intervals.

  The column body 26 is erected on the upper surface 31 of the container 30 so that the screw hole 24 and the introduction hole 54 are positioned in the extending direction of each arm 21, and the light source unit 10 is extended upward in the container 30. The arm 21 is configured to be positioned on the back surface of the light source unit 10 when attached in the posture. The front surface of each arm 21 faces the back side of the light source unit 10, and this surface is configured as a flat contact surface 21 </ b> A that is in close contact with the back surface of the light source unit 10. A screw hole 24B is formed at the upper end of the contact surface 21A, and the upper end of the light source unit 10 is screwed into the screw hole 24B with a screw 22B.

  Here, the support body 20 including the column body 26 and the housing body 30 is formed by extruding a material having excellent thermal conductivity, for example, an aluminum alloy material. The arm 21 of the column body 26 is formed in the longitudinal direction. A plurality of radiating fins 23 extending along the extending surface are provided. Since the back surface of the light source unit 10 is in close contact with the contact surface 21 </ b> A of each arm 21, the heat of the light source unit 10 is transferred to the arm 21 and efficiently radiated from the radiation fins 23. In addition, the shape of the radiation fin 23 provided in the arm 21 is arbitrary, and a configuration in which the arm 21 is formed in an uneven shape may be employed.

  The arm 21 of the support 20 is such that the contact surface 21A is slightly higher in the center than the both ends with respect to the longitudinal direction, that is, a surface with which a contact portion 51 described later on the back side of the light source unit 10 contacts. However, it is formed in a side-viewing arc shape that is slightly curved. That is, the light source unit 10 is screwed to the support body 20 with screws 22A and 22B at both ends on the lower end side and the upper end side in the longitudinal direction. Both ends tend to bend in a side arch shape having a shape closer to the support body 20 than the central portion 55 (see FIG. 8). Since the contact surface 21A of the arm 21 is curved in the longitudinal direction so as to be in close contact with the bending of the light source unit 10 when screwed, the adhesion between the arm 21 and the light source unit 10 is enhanced, and the light source unit The heat of 10 can be efficiently transferred to the support 20 and radiated.

As shown in FIG. 5, a flange-shaped flange portion 38 that travels to the outer periphery is formed on the edge portion on the bottom surface side of the outer peripheral surface 32 of the container 30. As shown in FIG. 3, the attachment body 35 to which the base 40 is attached is joined in a watertight manner.
Specifically, as shown in FIG. 3 and FIG. 4, the attachment body 35 is provided with a substantially cylindrical column part 39 and a bowl-shaped part that is provided at the edge on the upper end side of the column part 39 and travels to the outer periphery. The flange portion 41 is integrally provided. A ring groove 42 for fitting an O-ring (not shown) for waterproofing is provided along the edge in the upper surface 41A of the flange portion 41, and the upper surface of the flange portion 41 of the mounting body 35. Waterproofing is achieved by connecting 41A to the bottom surface 34 of the flange portion 38 of the container 30 in close contact with each other by screwing or bonding. That is, the container 30 is waterproofed with the bottom surface 34 closed by the base 40.

The base 40 is attached to the cylindrical portion 39 of the attachment body 35 from below. A pair of lead wires 25 and 25 for positive potential and negative potential drawn from the light source unit 10 into the housing 30 passes through the attachment body 35 and is electrically connected to the base 40 as shown in FIG. Connected to.
Specifically, a male connector 27 is attached to the tip of each lead wire 25, 25. Inside the container 30, there is provided a communication path 33 that communicates with each introduction hole 54 and opens to the bottom surface 34 of the container 30. Each communication path 33 is installed on a substrate 45 having a pattern formed thereon. A female connector 45A is inserted. Wiring from the mounting board 12 of each light source unit 10 is connected to the connector 45A through the lead-out hole 17 and the introduction hole 54, and is collected on the pattern of the board 45 on which the connector 45A is installed, connected in series, and attached. Extends to the body 35.

As shown in FIG. 4, the attachment body 35 is also provided with introduction paths 36 connected to the communication paths 33 of the container 30, and lead wires 25 and 25 are introduced from the introduction paths 36. The attachment body 35 is formed with passages 36A and 36B for drawing out the two lead wires 25 and 25 from the bottom surface, and the lead wires 25 and 25 drawn out through the passages 36A and 36B are connected to the base 40. Is done.
According to this configuration, it is possible to improve the workability of wiring connection from each light source unit 10 to the base 40 and to reduce the size of the housing 30 that houses the wiring.

Thereby, each light source unit 10 and the base 40 are electrically connected by the lead wires 25, 25, and each light source unit 10 is turned on by the DC power supplied through the base 40. At this time, the lead wires 25 and 25 are introduced into the introduction hole 54 and the lead-out hole 17 (described later) provided in a place where the light source unit 10 and the support 20 (more precisely, the container 30) are in close contact with each other. Since the light source unit 10 is drawn into the support 20 through the lead wires 25 and 25, the introduction holes 54, and the lead-out holes 17 are prevented from being exposed to the outside, and waterproofing between them can be obtained.
In other words, by providing the support 20 with the light source unit 10 that is waterproof, the entire LED lamp 1 can be waterproofed.

  6 is a perspective view showing the configuration of the light source unit 10, and FIG. 7 is a perspective view showing the inside of the light source unit 10 with the waterproof cover 14 removed. FIG. 8 is a rear view of the light source unit 10.

As described above, the light source unit 10 emits radiated light using the LED 11 as a light source, and is configured in a rectangular shape extending along the axis K of the support 20.
The LED lamp 1 of this embodiment includes three light source units 10, and these light source units 10 face the back surface 13 </ b> B of each base 13 inward and extend in the same direction as the axis K of the support 20. Around the axis K, they are annularly arranged at equal intervals and supported by the support 20. Thereby, light will be radiated | emitted to the range over the perimeter of the axis line K. FIG.
These light source units 10 all have the same structure and shape. When the LED lamps 1 having different light outputs are configured, the number of light source units 10 corresponding to a desired light output is provided around the support 20. Arranged.
In the LED lamp 1, when the light source unit 10 is arranged around the axis K, a gap G is provided between the adjacent light source units 10, which will be described later.

The configuration of the light source unit 10 will be described in detail. As shown in FIGS. 4 and 6 to 8, the light source unit 10 includes a mounting board 12 on which the LEDs 11 are mounted, and an electrical insulating member that is not shown in the mounting board 12. And a base 13 attached to the surface 13A.
The mounting board 12 is a substantially rectangular plate-like printed wiring board, on the surface of which a plurality of LEDs 11 and electrode patterns 16 constituting a charging unit are formed by soldering lead wires 25 and 25. Yes.

The LED 11 is formed by arranging a large number of LED elements, in the present embodiment, 240 LED elements, for example, in a lattice shape within a substantially rectangular range in plan view, and molding the surface thereof with a resin material with a small thickness. Yes, almost the entire surface emits light. As shown in FIG. 7, a plurality of (three in the illustrated example) LEDs 11 are arranged in series on the mounting substrate 12 with almost no gap, and these LEDs 11 can obtain linear light emission. . Thus, LED11 consists of many LED elements, and since it is comprised so that the whole may shine, it has the effect of reducing a glare by increasing the light emission area.
Moreover, the ratio of the area | region which LED11 occupies with respect to the surface area of the mounting board | substrate 12 occupies more than half, and it seems that the surface of the mounting board | substrate 12 light-emits entirely.
The electrode pattern 16 is formed at the end of the mounting substrate 12 and is electrically connected to each LED 11 in series or in parallel through a printed wiring (not shown).

The base 13 is a rectangular plate formed by extruding a metal material having high thermal conductivity such as aluminum, for example, and functions as a base for packaging the mounting substrate 12 and a heat sink that receives heat from the LED 11 and dissipates heat. To do.
More specifically, as shown in FIG. 7, the base 13 is formed in a thin plate shape (plate shape with a flat front and back) that can accommodate the mounting substrate 12 therein, and the surface 13A has a mounting substrate on the surface 13A. A mounting portion 13 </ b> C is formed as a concave portion that accommodates 12 substantially flush. As shown in FIG. 4, the mounting portion 13 </ b> C is formed in a planar shape that is in close contact with the mounting substrate 12, and heat transfer from the mounting substrate 12 to the base body 13 is enhanced.
A bulging portion 12A that bulges outward in the lateral direction is formed at the substantially central portion on both side surfaces of the base 13 in the short direction, and the mounting substrate 12 housed in the mounting portion 13C is formed in each bulging portion 12A. A screw 12B for holding down the screw is screwed.

  As shown in FIG. 7, the mounting portion 13 </ b> C of the base body 13 has a lead penetrating through the front and back of the base body 13 and connected to the mounting board 12 on the end portion 52 side of the mounting board 12 close to the electrode pattern 16. A lead-out hole 17 is provided for drawing out the wires 25, 25 to the back side. A notch 19 </ b> A through which a screw 22 </ b> A that is screwed to the housing 30 of the support 20 is passed is provided at one end 52 near the lead-out hole 17. Similarly, the other end portion 53 of the base body 13 is provided with a notch 19B through which a screw 22B screwed to the arm 21 of the support 20 is passed, and the both ends 52 and 53 are screwed to the support 20. Fixed.

The lead-out hole 17 is provided at a position connected to the introduction hole 54 of the container 30 when the base 13 is fixed to the support 20. Accordingly, as described above, the lead wires 25 and 25 connected to the electrode pattern 16 of the mounting substrate 12 are drawn into the housing 30 without being exposed to the outside through the lead-out hole 17 and the introduction hole 54. .
The lead-out hole 17 that opens to the back surface 13B of the base 13 is sealed with an appropriate sealing material so that the back surface 13B side is waterproofed.

The waterproof structure on the surface 13A side of the base 13 will be described. A groove 18 surrounding the mounting portion 13C is formed on the surface 13A as shown in FIG. 7, and the illustration of the groove 18 is omitted. However, as shown in FIG. 6, the waterproof cover 14 is attached so that the waterproof packing is fitted and the waterproof packing is crushed.
The waterproof cover 14 includes a dome-shaped cover portion 104 formed using a light-transmitting material, for example, a resin material, in an elliptical shape in plan view and a semicircular cross section. A flat plate flange 114 is integrally formed around the cover portion 104 of the waterproof cover 14 so as to be in contact with the surface 13A of the base 13 and to be fitted into the groove 18 and press the waterproof packing against the surface 13A. Thus, the close contact between the flat flange 114 and the waterproof packing of the groove 18 can prevent water from entering the mounting portion 13C on the inner side, and the mounting substrate 12 and the charging portion are protected from water immersion.

  According to this configuration, in order to make the light source unit 10 waterproof, for example, when the entire lamp 1 is covered with a waterproof cover, convection of air is delayed, so that a sufficient cooling effect cannot be obtained. According to this embodiment, the waterproof structure is realized by covering only the LEDs 11 of the individual light source units 10 and the mounting substrate 12 on which the LEDs 11 are mounted with the waterproof cover. Thereby, the lamp 1 can realize the waterproof structure of the LED 11 of each light source unit 10 and the mounting substrate 12 on which the LED 11 is mounted, and has a structure in which other portions are exposed to the outside air, thereby obtaining a high cooling effect. Can do.

  With the above configuration, the waterproof light source unit 10 is configured. And since the lead wires 25, 25 extending from the light source unit 10 are drawn into the support body 20 (container 30) from the introduction hole 54 provided in the surface where the light source unit 10 is closely adhered and sealed, The entire LED lamp 1 can be easily waterproofed.

  The attachment structure of the waterproof cover 14 to the base body 13 will be described. At each corner 14A of the flat plate flange 114, a locking portion 14B for locking the waterproof cover 14 to the base body 13 is provided. At the tip of each locking portion 14B, there is provided a locking claw 14C that is hooked on the back surface 13B of the base 13 when the waterproof cover 14 is placed on the front surface 13A of the base 13. When the waterproof cover 14 is attached to the base 13, the locking claw 14 </ b> C contacts the back surface 13 </ b> B of the base 13 with the locking portion 14 </ b> B elastically deformed and the locking claw 14 </ b> C contacting the side surface of the base 13. Push in until it gets caught. On the side surface of the base 13, a stopper 13 </ b> D that is locked to the locking portion 14 </ b> B of the waterproof cover 14 and prevents the waterproof cover 14 from sliding in the longitudinal direction of the base 13 is provided. According to these configurations, the light source unit 10 can be waterproofed with a simple structure. Further, the waterproof cover 14 can be easily attached to the base 13 without using screws or the like, and the assemblability is improved. Further, the surface 13A of the base 13 and the flat flange 114 of the waterproof cover 14 are caulked with an adhesive so that the LED 11 and the mounting substrate 12 are waterproofed.

By the way, in this LED lamp 1, in order to obtain a high light output like an HID lamp, each LED element of the LED 11 is increased in output and / or the number of LED elements is increased. For this reason, the individual heat generation of the LED 11 is very large, and the light source unit 10 using the LED 11 as a light source is required to have high heat dissipation (coolability). In particular, the die-type LED lamp 1 is different from a lamp or the like, and it is necessary to process heat generation by itself, so that it is difficult to increase the output.
Therefore, in this embodiment, the heat dissipation of the LED lamp 1 is increased as follows.

That is, in the light source unit 10, the mounting substrate 12 is provided in close contact with the surface 13A of the base 13 formed of a high thermal conductivity material, and a large number of heat dissipation is performed on the back surface 13B of the base 13 as shown in FIG. The fins 15 are integrally provided so that the heat generated by the LEDs 11 on the mounting substrate 12 is radiated through the radiation fins 15.
More specifically, the contact surface 21A of the arm 21 of the support 20 is brought into contact with the back surface 13B of the base 13, but the width of the contact surface 21A is sufficiently larger than the width W of the back surface 13B of the base 13. It is small (about one third in this embodiment) and is configured so that the remaining part is exposed. In the present embodiment, the contact surface 21A of the arm 21 is in contact with the center of the back surface 13B of the base body 13 along the longitudinal direction, and three radiating fins 15 extending in parallel with the arm 21 are provided on both sides thereof. It has been. These heat radiation fins 15 are provided between the stoppers 13D that prevent the waterproof cover 14 provided at both ends of the base 13 from being displaced, and more precisely between the bulging portions 12A and the stoppers 13D. It has been. That is, three radiating fins 15 are provided in four sections.

  The three radiating fins 15 of each section are formed from three radiating fins 15 having different heights from the inner side (arm 21 side) toward the outer side as shown in FIG. Composed. According to this configuration, by increasing the heat dissipating area in the vicinity of the LED 11 provided on the surface 13A of the base 13, the heat of the LED 11 can be dissipated efficiently, and all the heat dissipating fins 15 are formed in the same size. Compared with this, the light source unit 10 can be reduced in weight.

When the light source unit 10 is supported on the arm 21 of the support 20, the arm 21 contacts with a contact surface 21A that is narrower than the width W of the light source unit 10. Therefore, as shown in FIG. A space R extending along the axis K of the support 20 is formed between the support 20 and the back surface 13B. This space R functions as a ventilation path extending from the upper end to the lower end of the back surface 13B of each light source unit 10 and connected to the outside. Therefore, the heat generated by the LEDs 11 can be sufficiently dissipated from the radiation fins 15 on the back surface 13B of each light source unit 10. In other words, the LED lamp 1 having sufficient heat dissipation performance can be configured without relying on heat transfer to the support 20 side because the light source unit 10 has a performance capable of sufficiently dissipating the heat generated by the LED 11 as a single unit. Thereby, the material of the support body 20 can be selected irrespective of the heat conduction performance, an inexpensive material can be used, and the cost can be reduced.
Of course, like this embodiment, the support body 20 including the arm 21 is formed of a high heat conductive material, so that the heat generated by the light source unit 10 is transferred to the support body 20 to assist heat dissipation, and higher heat dissipation is achieved. You can have it.

  Further, as described above, since the light source units 10 are arranged with the gaps G around the axis K of the support 20, the gaps G communicate with the space R, and air flows through the space R. It is easy. Thereby, the heat dissipation from the radiation fin 15 facing the space R is enhanced.

Second Embodiment
In 1st Embodiment mentioned above, it illustrated about the structure which the support body 20 supports both ends 52 and 53 of the light source unit 10 at both ends. This embodiment demonstrates the structure which cantilever-supports the edge part of the light source unit 10. FIG.

  FIG. 9 is a perspective view showing the configuration of the LED lamp 100 according to the present embodiment, and FIG. 10 is an exploded perspective view of the LED lamp 100. In these drawings, the same components as those of the LED lamp 1 of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in these drawings, the light source unit 10 has one end 52 that is cantilevered around the housing 30.
With this configuration, the LED lamp 100 can be reduced in weight, and a wide space R can be provided on the back surface 13B side of the base body 13 of the light source unit 10, so that a large amount of air can be circulated in the space R. Thereby, the heat radiation efficiency from the back surface 13B side of the base 13 can be improved, and the heat from the LED 11 and the mounting substrate 12 provided in the light source unit 10 can be efficiently radiated.
Although not shown, since the entire back surface 13B of the base 13 can be a heat radiating surface, a plurality of heat radiating fins 15 are arranged without gaps in the short direction of the base 13 to widen the heat radiating area of the back surface 13B. be able to.

As described above, according to the embodiment to which the present invention is applied, the plurality of flat light source units 10 having the mounting substrate 12 on which the light emitting element 11 is mounted on the surface 13A of the base 13 are provided. Are arranged around the support 20 with the back surface 13B of each base body 13 facing inward, and each light source unit 10 has a waterproof structure 14 for waterproofing the mounting substrate 12 on the front surface 13A of the base body 13, and the back surface of the base body 13 13B is provided with a lead-out hole 17 through which the lead wire is led out, and the support body 20 has an introduction hole 54 through which the lead wire from the lead-out hole 17 is introduced into the support body 20, and a housing body that houses each lead wire introduced. The lead-out hole 17 and the introduction hole 54 are waterproofed by bringing the light source unit 10 and the support 20 into close contact with each other, and each lead wire accommodated in the container 30 closes the container 30. It is waterproof.
Thus, by arranging the plurality of light source units 10 around the support 20, brightness equivalent to a high output type lamp such as an HID lamp can be obtained. Moreover, since the light emitting element 11 and the mounting substrate 12 on which the light emitting element 11 is mounted are unitized as the light source unit 10, the output of the lamp 1 can be obtained by changing the number of the light source units 10 supported by the support 20. For example, it is possible to manufacture the lamp 1 having a brightness equivalent to a 100 W, 200 W, 300 W, or 400 W HID lamp using the common light source unit 10. Further, since the mounting substrate 12 is waterproof, the lead-out hole 17 through which the lead wire of the light source unit 10 passes and the introduction hole 54 are waterproof, and further, the lead wire accommodated in the housing 30 is prevented, the lamp 1 is of the prevention type. The lamp 1 can be used, and the lamp 1 can be used for a lamp installed outdoors.

  Further, according to the embodiment to which the present invention is applied, since the cap 30 is provided in the container 30 and the container 30 is closed by the cap 40, the lead wire accommodated in the container 30 by the cap 40 is used. It can be waterproof, and the lamp 1 can be connected to a socket of an existing lamp with a base 40. The lamp 1 can be easily replaced with an HID lamp without changing the socket of the lamp or the lamp. Can be used as

  Moreover, according to the embodiment to which the present invention is applied, since the support body 20 is provided with the plurality of heat radiation fins 23, the support body 20 has a wide heat dissipation area, and the light source unit 10 to the support body 20. The transferred heat can be efficiently radiated from the support 20.

  Further, according to the embodiment to which the present invention is applied, the introduction hole 54 is provided in the container 30. For example, in the case where the support body 20 is provided with an introduction hole in the convex portion 21 and the lead wire is accommodated in the accommodating body 30, it is necessary to make the convex portion 21 hollow, and the heat dissipation of the support body 20 is impaired. However, according to the present embodiment, since the introduction hole 54 is provided in the housing body 30, it is not necessary to make the convex portion 21 hollow, and the heat dissipation of the support body 20 can be improved.

  The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the cap-type lamp including the base 40 has been described. However, the present invention is not limited thereto, and a configuration including an insertion-type connector instead of the base 40 may be used.

  Further, for example, in the above-described embodiment, the shape of the column body 26 provided in the support body 20 is exemplified by the Y-shaped cross section in which the end portions of the arms 21 are coupled together. A rod-shaped column may be arranged, and the arms 21 may extend radially from the peripheral surface of the column. At this time, the arm 21 may be configured to be scattered along the axis K and contact the back surface of the light source unit 10.

1,100 LED lamp (lamp)
10 Light source unit 11 LED (light emitting element)
DESCRIPTION OF SYMBOLS 12 Mounting substrate 13 Base | substrate 13A Front surface 13B Back surface 14 Waterproof cover 15 Radiation fin 17 Lead-out hole 20 Support body 21 Protrusion part (arm)
30 Container 40 Base 52 One end 53 Other end 54 Introduction hole 55 Central portion G Gap K Axis R Space

Claims (3)

  Provided with a plurality of flat light source units having a mounting substrate on which the light emitting element is mounted on the surface of the base, these light source units are arranged around the support with the back surface of each base facing inward, The surface of the base has a waterproof structure for waterproofing the mounting substrate, and has a lead-out hole for leading out a lead wire on the back surface of the base, and the support supports the lead wire from the lead-out hole inside the support. The lead-in hole and the lead-in hole are waterproofed by bringing the light source unit and the support member into close contact with each other. Each of the accommodated lead wires is waterproofed by closing the container.   The lamp according to claim 1, wherein a cap is provided in the container, and the container is closed by the cap.   The lamp according to claim 1, wherein the introduction hole is provided in the container.

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