JP2019023979A - Floodlight - Google Patents

Abstract

To provide a floodlight which enables maintenance to be performed quickly and securely when failure occurs, inhibits size and weight from being increased, and achieves high luminance.SOLUTION: A closed space 4 is formed by a flat-plate-like metal base 2 and a semi-cylindrical resin cover 3 and a light source unit 10 including an optical system and a heat radiation system is attached onto the metal base 2 within the closed space 4. The optical system includes: a light source 16 and a light source mounting substrate 15 on which the light source 16 is mounted; a base 11 to which the light source mounting substrate 15 is attached; a lamp housing 20 which is disposed on the base 11 so as to enclose the light source 16; a light incident part 32 in which the lamp house 20 is fixedly engaged through a packing 60 in a removable manner; and a reflector 31 which reflects emission light from the light source 16 and an outer cover 41 which transmits the reflection light reflected by the reflector 31 and emits the reflection light to the outside.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an illumination lamp, and more particularly to an outdoor illumination lamp.

Conventionally, as this kind of illumination lamp, there is one disclosed in Patent Document 1 under the name of “assembled structure of LED street lamp and heat dissipation module”.

In the disclosed LED street light, as shown in FIG. 12, the upper cover plate 80 is screwed to the partition plate 82 via the flat plate 81, and a large number of heat dissipating pieces 83 are arranged in parallel at predetermined intervals in the upper cover plate 80. A heat dissipating body 84 is installed, and a light transmission lens 86 is fitted and fitted under the partition plate 82 through a lower frame 85 sealed by the partition plate 82 to be inside the light transmission lens 86 in a sealed space. A plurality of LED lamp units 87 are installed.

The heat receiving end 91 of the thermotube 90 inserted through the communication hole 88 of the heat dissipating body 84 and the perforation 89 of the partition plate 82 is in close contact with one side plane of the temperature uniform plate 92, and the opposite side plane of the temperature uniform plate 92 is the LED. The LED module (not shown) of the lamp unit 87 is in close contact with the LED module. Thereby, the heat generated from the LED module is efficiently radiated by a rapid heat conduction effect.

Utility model registration No. 3126628

  By the way, the LED street light 100 having the above configuration is installed outdoors, for example, in a state of being attached to a pole standing on the ground, but the LED lamp unit (LED module) 87 or the thermotube 90 is used as an LED. When a problem occurs in the parts constituting the streetlight 100, in the replacement work of the defective part, if the LED streetlight 100 is once disassembled, whether or not the initial sealing performance can be secured when assembled again on the spot becomes a concern. Therefore, by replacing every LED street light 100, it is possible to solve the problem and ensure reliability. However, in this case, an economic burden is increased, resulting in an increase in running cost including maintenance costs.

  Further, in order to obtain a bright LED street light 100, it is possible to increase the amount of light emitted from the LED street light 100. For this purpose, it is necessary to increase the number of LED lamp units (LED modules) 87, and as a result, the LED street light 100 As the amount of light emitted from the LED increases, the LED street lamp 100 cannot be increased in size and weight.

  In addition, the LED streetlight 100 is increased in size and weight, making it difficult to handle at the time of manufacture and installation, and requires a sturdy attachment mechanism, resulting in an increase in installation costs. Increasing the size and weight of the LED streetlight 100 also increases the shaking when subjected to wind and earthquakes when attached to the pole, increasing the possibility of mechanical failure.

  Therefore, the present invention was devised in view of the above problems, and the object of the present invention is to easily and promptly perform maintenance at the time of occurrence of a malfunction, and to suppress an increase in size and weight. It is another object of the present invention to provide an illumination lamp that can achieve high brightness.

  In order to solve the above problems, the invention described in claim 1 of the present invention includes a flat metal base, a semi-cylindrical resin cover arranged to cover one side of the metal base, A light source unit mounted on the metal base in a closed space formed by the metal base and the resin cover, the light source unit includes an optical system and a heat dissipation system, and the optical system A light source, a light source mounting board on which the light source is mounted, a base on which the light source mounting board is mounted, a lamp house disposed on the base so as to surround the light source, and the lamp house packing A light incident portion that is removably engaged and fixed via the light source, a reflector that reflects the light emitted from the light source, and an outer cover that transmits the light reflected by the reflector and emits the light to the outside. Part It is characterized in that the reflector and the outer cover the outer cover while being integrated by a waterproof structure is fixedly fitted to the outer cover fitting hole provided on the metal base.

  According to a second aspect of the present invention, in the first aspect, the reflector has an inner surface as a reflecting surface, the reflecting surface has a position of the light source as a first focal position, and the outer surface of the outer cover. It has a partial spheroid shape with the position of 2 as the position of the second focus.

  According to a third aspect of the present invention, in any one of the first or second aspect, the heat dissipation system is fastened to a heat dissipating fin group in which a plurality of plate-shaped heat dissipating fins are arranged in parallel. The plurality of heat pipes are attached to the metal base in a heat transfer manner.

  Moreover, the invention described in claim 4 of the present invention is any one of claims 1 to 3, in the region directly above the heat dissipation system of the resin cover and the region directly below the heat dissipation system of the metal base. Each is characterized in that a plurality of slit-like through holes are provided.

  Further, according to a fifth aspect of the present invention, in any one of the first to fourth aspects, a waterproof power source that is heavier than the light source unit is placed on the metal base in the closed space. It is attached, and the fitting part which the tip part of a pole fits is provided in the opposite position of the power supply on the surface opposite to the surface where the power supply is attached of the metal base. is there.

  According to a sixth aspect of the present invention, in the fifth aspect, a waterproof terminal block is attached to the metal base in the closed space, and the power source and the terminal block are cords. The terminal block and the light source are connected by a cord provided with a waterproof connector in the middle.

  According to the present invention, a light source unit including an optical system and a heat dissipation system is mounted on a metal base in a closed space formed by a metal base and a resin cover, and the optical system is mounted with a light source and a light source mounted thereon. A substrate, a base on which the light source mounting substrate is mounted, a lamp house disposed on the base so as to surround the light source, and a light incident portion on which the lamp house is detachably engaged and fixed via packing The reflector includes a reflector that reflects the light emitted from the light source, and an outer cover that transmits the light reflected by the reflector and emits the light to the outside.

  As a result, a lighting fixture that can easily and quickly perform maintenance at the time of occurrence of a failure and suppresses an increase in size and weight and achieves high brightness is realized.

It is a longitudinal cross-sectional view of the illumination lamp of embodiment which concerns on this invention. It is the disassembled perspective view which looked at the light source unit from the optical path formation part side. It is the disassembled perspective view which looked at the light source unit from the heat radiating unit side. It is the figure which removed the reflector from the reflector side and looked at the light source unit. It is AA sectional drawing of FIG. It is explanatory drawing of the optical path formed with a light source unit. It is the figure which removed the resin cover from the resin cover side and looked at the illuminating lamp. FIG. 8 is a side view of FIG. 7. It is a reverse view of FIG. It is the top view which looked at the illuminating lamp of embodiment which concerns on this invention from the resin cover side. It is explanatory drawing of the irradiation area | region of an illumination lamp. It is explanatory drawing of a prior art example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 11 (the same parts are given the same reference numerals). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

  As shown in FIG. 1, an illuminating lamp 1 of the present invention has a metal base 2 mainly made of a substantially flat light metal, and a substantially semi-cylindrical shape which is located on one surface side of the metal base 2 and closes both end openings. A closed space 4 is formed with the resin cover 3, a light source unit 10 having a heat radiating means (heat radiating unit 50) in the closed space 4, and a light source 16 constituting the light source unit 10 via a power cord (not shown). A power supply 66 for supplying power, a power introduction cord 67 connected to an external power supply, and a terminal block 69 for connecting an input cord 68 of the power supply 66 are provided. Among them, each of the optical path forming unit 30, the power supply 66, and the terminal block 69 having a hollow optical path forming space 30 a related to the optical path formation of light emitted from the light source 16 in the light source unit 10 has a waterproof structure. On the other hand, the other surface side of the metal base 2 has a semi-cylindrical insertion portion 5 into which a tip end portion of a pole 75 to which the illumination lamp 1 is attached is inserted.

  As shown in FIGS. 2 and 3, the light source unit 10 mainly includes a base 11, a light source mounting substrate 15, a lamp house 20, a packing 60, an optical path forming unit 30, and a heat dissipation unit 50.

  The base 11 has a disk shape and is made of a material having good thermal conductivity such as metal or ceramic.

  The light source mounting substrate 15 includes a light source 16 and a substrate 17 on which the light source 16 is mounted. Among the light sources 16, for example, a semiconductor light emitting element (in this embodiment, an LED element) is used as a light source, and one light source 16 is used. The LED element described above has a configuration in which it is incorporated into a surface mount type package, and the shape viewed from the light emitting surface 16a side is rectangular. The shape of the light exit surface 16a of the light source 16 is also rectangular.

  As the substrate 17, a glass epoxy substrate (FR-4), a glass composite substrate (CEM-3), a metal substrate made of a metal material such as aluminum, a ceramic substrate made of a ceramic material, or the like is appropriately selected and used.

  The lamp house 20 is made of a white light-shielding reflective resin, and has an annular bottom 21 located at the outer peripheral edge, and a disc-shaped upper bottom 22 located inside the bottom 21 and one level higher than the bottom 21. have. A rectangular opening 23 corresponding to the light source 16 and an inclined reflecting surface 24 that rises from each of the four sides of the opening 23 and inclines forward obliquely to the upper bottom 22 at the center of the upper bottom 22. Have. Further, on the outer peripheral edge portion of the upper bottom portion 22 of the lamp house 20, a locking piece 25 having a shape that rises substantially perpendicularly from the outer peripheral edge portion, extends forward to a predetermined height and is bent sideways is provided in the circumferential direction. It is provided at a plurality of locations at predetermined intervals.

  The optical path forming unit 30 includes two cut surfaces, a reflector 31 having a partial ellipsoidal shape formed by part of a spheroidal surface obtained by cutting the spheroidal surface by two surfaces substantially orthogonal to each other, and a reflector 31 having a partial ellipsoidal shape. 1 has a light incident portion 32 corresponding to one of the cut surfaces and a light emitting portion 40 corresponding to the other cut surface. The inside has a hollow optical path forming space 30a and the outer periphery has a waterproof structure. doing.

  The reflector 31 is made of a heat-resistant resin material, and its inner surface is a light reflecting surface 31a made up of a partial spheroid.

  The light incident portion 32 has a flat plate portion 33 and a disk-shaped upper bottom portion 34 that is positioned one step higher in front than the flat plate portion 33 formed on the upper curved side of the central portion of the flat plate portion 33. A circular opening 35 is provided at the center of the bottom 34. The back surface side space 36 of the upper bottom portion 34 has a diameter corresponding to the outer periphery of the lamp house 20, and the opening 35 provided in the central portion of the upper bottom portion 34 has a diameter corresponding to the upper bottom portion 22 of the lamp house 20. In addition, the opening end portion 37 is provided with a notch 38 at a position facing the locking piece 25 provided on the upper bottom portion 22 of the lamp house 20.

  The light emitting part 40 is composed of an outer cover 41 made of a transparent material and through which light emitted from the light source 16 is transmitted.

  The heat radiating unit 50 forming the heat radiating system includes a plurality of (in this embodiment, 12 pieces) flat plate-like radiating fins 51 arranged in parallel and a plurality of (in this embodiment, three pieces) radiating fin groups 52. A straight portion extending from one side of the U-shaped bent portion 55 of the heat pipe 53 has a heat pipe group 54 in which U-shaped heat pipes 53 are arranged in parallel. 56 is fixed to the radiating fin group 52 at two or more locations by caulking, and the tip 56a protrudes from the radiating fin group 52 to the outside.

  As shown in FIGS. 4 and 5, the light source unit 10 composed of the above components is mounted on one surface of the base 11 in a state where the light source mounting substrate 15 on which the light source 16 is mounted is in surface contact. On the surface, the lamp house 20 is fixed by screws 12 with a packing 61 in between. At this time, the light source mounting substrate 15 mounted on the base 11 is accommodated in the back surface side space 26 of the upper bottom portion 22 of the lamp house 20, and the rectangular opening 23 provided in the upper bottom portion 22 is rectangular. It is located so as to surround each side of the shaped light source 16.

  The lamp house 20 screwed and fixed to the base 11 is housed in the back surface side space 36 of the upper bottom portion 34 of the light incident portion 32, and the surface 22 a of the upper bottom portion 22 is placed on the upper bottom portion of the light incident portion 32 via the packing 60. In a state of being opposed to the inner surface 34 a of the lamp 34, the locking piece 25 provided on the upper bottom portion 22 of the lamp house 20 is inserted into the notch 38 provided on the opening end portion 37 of the light incident portion 32, and the lamp house is inserted. The locking piece 25 is engaged with the opening end 37 of the light incident portion 32 by rotating while pressing 20.

  Thereby, the base 11, the light source mounting substrate 15, the lamp house 20, and the optical path forming unit 30 constituting the light source unit 10 are configured in a waterproof structure via the two packings 60 and 61, and the light source 16 is accommodated therein. ing.

  The heat dissipation unit 50 is disposed on the other surface side of the base 11, and the groove 14 surrounded by the pair of side walls 13 protruding and extending from the back surface of the base 11 has the heat dissipation unit 50. A straight portion 57 extending from the other side of the bent portion 55 is fitted into the straight portion 56 of each heat pipe 53 of the heat pipe group 54 fixed in contact with the radiating fin group 52.

  Note that the inner surface of the groove portion 14 of the base 11 and the outer surface of the straight portion 57 of the heat pipe 53 are in surface contact with each other, so that the heat dissipation unit 50 is fixed to the base 11 via the heat pipe group 54. At the same time, the heat generated simultaneously with the light when the light source (LED element) 16 is turned on (light emission) is conducted through the light source mounting substrate 15 and moved to the base 11, and the heat transferred to the base 11 is the heat pipe 53. The portion of the base 11 that is in contact with the groove portion 14 absorbs heat, moves through the heat pipe 53 and is transmitted to the radiating fin group 52 to which the heat pipe 53 is fixed in contact. Dissipated.

  Thereby, the temperature rise by the self-heating at the time of light emission of the LED element of a light emission source can be suppressed favorably. As a result, a decrease in the amount of emitted light due to a decrease in light emission efficiency of the LED element due to a rise in temperature of the LED element is suppressed, and similarly a reduction in element life due to deterioration of the LED element due to a temperature increase of the LED element is suppressed. It becomes possible.

As shown in FIG. 6, the optical system of the light source unit 10 includes a light source 16, a light reflecting surface 31a of the reflector 31, and an outer cover 41 of the light emitting unit 40. The light reflecting surface 31a of the reflector 31 is as described above. Have a partial spheroid shape. In this partial spheroid, the position of the first focal point (f ₁ ) is the position of the light source 16, and the position of the second focal point (f ₂ ) is obliquely below the front of the outer cover 41 of the light emitting unit 40 (light source 16 side direction). ) Position.

Therefore, the light emitted from the light source 16 located at the position of the first focal point (f ₁ ) toward the light reflecting surface 31a formed of the spheroidal surface of the reflector 31 propagates in the optical path forming space 30a of the optical path forming unit 30. Then, the light is reflected by the light reflecting surface 31 toward the position of the second focal point (f ₂ ), and the reflected light is propagated through the optical path forming space 30a and transmitted through the outer cover 41 of the light emitting part 40 to be temporarily the second focal point. After focusing on (f ₂ ), it is diffused as radiated light as if it were emitted from one point of the second focal point (f ₂ ).

  The light source unit 10 having the above configuration is supported and fixed on the metal base 2 together with the power source 66 and the terminal block 69 as shown in FIGS. In this case, the power source 66 is provided on the back side of the one end side of the metal base 2 and is disposed at a position immediately above the insertion portion 5 into which the tip of the pole 75 to which the illumination lamp 1 is attached is inserted. Are arranged on the other end side of the metal base 2 opposite to the side where the power source 66 is arranged. The terminal block 69 is disposed between the power source 66 and the light source unit 10.

  Thus, by arranging the power supply 66 that is heavier than the light source unit 10 immediately above the pole 75, the illumination lamp 1 can be attached to the pole 75 in a balanced and stable state.

  The metal base 2 has a light source unit 10 disposed at the position where the outer cover fits in a shape (saddle shape) surrounded by an ellipse and a straight line corresponding to the light emitting unit 40 constituting the optical path forming unit 30 of the light source unit 10. A hole 6 is provided, and the outer cover 41 is fitted and fixed to the outer cover fitting hole 6. Further, the metal base 2 takes in outside air for radiating heat conducted from the light source 16 to the radiating fin group 52 by natural air cooling at a position directly below the radiating fin group 52 of the radiating unit 50 constituting the light source unit 10. An intake hole 7 composed of a plurality of slit-like through holes is provided.

  The power introduction cord 67 wired in the pole 75 is connected to the input cord 68 in the terminal block 69 with respect to the power source 66, the terminal block 69 and the light source unit 10 supported and fixed on the metal base 2, and the input cord 68 Is connected to an input terminal (not shown) of the power supply 66 and a power cord 65 is connected to an output terminal (not shown) of the power supply 66 and extends to the light source mounting board 15.

  The power cord 65 is provided with a waterproof connector 70 in the middle so that the cord and the circuit can be easily disconnected.

  Therefore, the power supplied from the external power source (not shown) is sent to the power source 66 through the power introduction cord 67 and the input cord 68, and the power converted into the drive voltage of the light source 16 by the power source 66 is mounted on the light source through the power cord 65. The light source 16 is fed to the substrate 15 and supplied with power, so that the light source 16 is driven and lit.

  In the above circuit configuration, when a failure occurs in the light source unit 10 (for example, a decrease in brightness or non-lighting of the light source 16), the power supply 66 is fixed on the metal base 2 by cutting the circuit with the waterproof connector 70. Then, the lamp house 20 engaged and fixed to the light incident part 32 is removed from the light incident part 32 of the light source unit 10, and the base 11 and the heat radiation unit 50 to which the lamp house 20, the light source mounting board 15 are attached are integrated. Remove.

  Thereafter, the base 11 on which the light source mounting substrate 15 on which the normal light source 16 is mounted and the heat radiating unit 50 are engaged and fixed to the light incident portion 32 of the light source unit 10 through the lamp house 20.

  In addition, when a problem occurs in the power source 66 (for example, a decrease in output or no output), the light source unit 10 is fixed on the metal base 2 by cutting the circuit at both the terminal block 69 and the waterproof connector 70. In this state, only the power supply 66 can be removed and repaired, or replaced with a new power supply 66.

  As shown in FIG. 1, the resin cover 3 has a substantially semi-cylindrical shape in which both end openings are closed so as to cover the metal base 2 to which the light source unit 10, the power source 66 and the terminal block 69 are attached from above.

  The resin cover 3 is formed of a resin material having excellent heat resistance and weather resistance, and is conducted from the light source 16 to the radiating fin group 52 at a position directly above the radiating fin group 52 of the radiating unit 50 constituting the light source unit 10. Exhaust holes 8 each having a plurality of slit-like through holes that receive the received heat by natural air cooling and dissipate the heat are provided (see FIG. 10).

  That is, the heat conducted from the light source 16 to the radiating fin group 52 of the radiating unit 50 is efficiently radiated by the chimney effect of the intake hole 7 provided in the metal base 2 and the exhaust hole 8 provided in the resin cover 3. The The intake hole 7 provided in the metal base 2 has a drainage function for discharging water that has entered the closed space 4 formed by the metal base 2 and the resin cover 3 simultaneously with an intake function for taking in outside air. Yes.

  As shown in FIG. 11, when the illumination lamp 1 is attached to the pole 75, the light emitted from the light source 16 arranged with the optical axis X directed to the side is emitted in the light emission direction. The light is reflected downward by the light reflecting surface 31a of the reflector 31 located on the front (pole 75 side), and the reflected light irradiates the lower irradiation surface.

  Therefore, the irradiation light from the illuminating lamp 1 does not irradiate the pole 75 side from the position directly below the reflector 31, and illuminates the front (opposite side of the pole 75) from the vicinity immediately below the reflector 31. Therefore, for example, when the illumination lamp 1 is attached to a pole provided on the shoulder of a road and used as a lamp of a street lamp that illuminates the road, an area outside the shoulder of the road does not require illumination in the width direction of the road. The light is not directed and most of the irradiated light is directed to the road surface. As a result, the utilization efficiency of the emitted light from the illumination lamp 1 is increased, the road surface is brightly illuminated, and the driver's forward visibility can be enhanced.

  By the way, the shape of the light emission surface 16a of the light source 16 is projected on the irradiation pattern by the emitted light of the illumination lamp 1. In the case of this embodiment, as described above, the light source 16 has the rectangular shape of the light emitting surface 16a. In the light source unit 10, the light source 16 has the horizontal direction in the longitudinal direction of the light emitting surface 16a and the short direction in the short direction. It is arranged as a vertical direction. Therefore, the width direction of the road projects the short direction of the light emitting surface 16a of the light source 16, and the road extending direction projects the longitudinal direction of the light emitting surface 16a of the light source 16.

  Therefore, by appropriately changing the shape of the light emitting surface 16a of the light source 16, the pattern of the irradiation region formed on the road surface can be set to a desired pattern.

  Further, the size of the light emission surface 16a of the light source 16 is reflected in the size of the irradiation region, and the number of LED elements constituting the light source is reflected in the brightness of the irradiation region. Therefore, the shape and range of the irradiation region can be set by changing only the shape and size of the light emitting surface of the light source without increasing the size and weight of the illumination lamp 1. Similarly, the illumination lamp 1 can be increased in size. And the brightness in an irradiation area | region can be set by changing only the number of LED elements which comprise a light source, without weighting.

  The illumination lamp 1 having the above-described configuration is mounted on the metal base 2 by the light source unit 10 fitting and fixing the outer cover 41 constituting the light source unit 10 in the outer cover fitting hole 6 of the metal base 2. ing. Therefore, the outer cover 41 has both a mechanical function as an attachment part for attaching the light source unit 10 to the metal base 2 and an optical function as a light emission part that emits light emitted from the light source 16 toward the outside. It has the function of.

  As a result, the number of components constituting the illuminating lamp 1 is suppressed, and the manufacturing cost can be reduced.

DESCRIPTION OF SYMBOLS 1 ... Illuminating lamp 2 ... Metal base 3 ... Resin cover 4 ... Closed space 5 ... Insertion part 6 ... Outer cover fitting hole 7 ... Intake hole 8 ... Exhaust hole 10 ... Light source unit 11 ... Base 12 ... Screw 13 ... Side wall 14 ... Groove 15 ... Light source mounting substrate 16 ... Light source 16a ... Light emission surface 17 ... Substrate 20 ... Lamp house 21 ... Bottom 22 ... Upper bottom 22a ... Surface 23 ... Opening 24 ... Inclined reflecting surface 25 ... Locking piece 26 ... Back side Space 30 ... Optical path forming part 30a ... Optical path forming space 31 ... Reflector 31a ... Light reflecting surface 32 ... Light incident part 33 ... Flat plate part 34 ... Upper bottom part 34a ... Inner surface 35 ... Opening 36 ... Back side space 37 ... Opening end 38 ... Notch 40 ... Light emitting part 41 ... Outer cover 50 ... Radiation unit 51 ... Radiation fin 52 ... Radiation fin group 53 ... Heat pipe 54 ... Heat pipe group 55 ... Bending part 56 Straight portions 56a ... tip 57 ... straight portion 60 ... packing 61 ... packing 65 ... power cord 66 ... power supply 67 ... power lead cord 68 ... input code 69 ... terminal block 70 ... waterproof connector 75 ... Paul

Claims (6)

A flat metal base;
A semi-cylindrical resin cover arranged to cover one side of the metal base;
A light source unit mounted on the metal base in a closed space formed by the metal base and the resin cover,
The light source unit includes an optical system and a heat dissipation system,
The optical system includes a light source, a light source mounting board on which the light source is mounted, a base on which the light source mounting board is attached, a lamp house disposed on the base so as to surround the light source, A light incident part in which the lamp house is detachably engaged and fixed via the packing; a reflector that reflects the light emitted from the light source; and an outer cover that transmits the light reflected by the reflector and emits the light to the outside. ,
The light incident part, the reflector, and the outer cover are integrated by a waterproof structure, and the outer cover is fitted and fixed in an outer cover fitting hole provided in the metal base. .   The reflector has a partial spheroid shape in which the inner surface is a reflecting surface, the position of the light source is the position of the first focus, and the position outside the outer cover is the position of the second focus. The illumination lamp according to claim 1.   The heat dissipation system is characterized in that a plurality of heat pipes fastened to a heat dissipating fin group in which a plurality of flat heat dissipating fins are arranged side by side are attached to the metal base in a heat transfer manner. Or the illumination lamp in any one of Claim 2.   4. A plurality of slit-shaped through holes are provided in each of a region directly above the heat dissipation system of the resin cover and a region immediately below the heat dissipation system of the metal base. The illumination lamp in any one.   A waterproof power supply that is heavier than the light source unit is attached on the metal base in the closed space, and at a position opposite to the power supply on the surface opposite to the surface on which the power supply is installed on the metal base, The illuminating lamp according to any one of claims 1 to 4, wherein a fitting portion into which a tip end portion of the pole is fitted is provided.   A waterproof terminal block is mounted on the metal base in the closed space, the power source and the terminal block are connected by a cord, and the terminal block and the light source are provided with a waterproof connector in the middle The illuminating lamp according to claim 5, wherein the illuminating lamp is connected.

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