JP6940981B2 - lighting equipment - Google Patents

Description

The present invention relates to a luminaire having a reflector unit and a light source unit.

Lighting fixtures suitable for floodlighting such as parking lots, signboards, and banners have a configuration in which an LED light source unit is mounted instead of the HID lamp unit at the rear end of an existing reflector unit to which the HID lamp unit is mounted. Is known (see, for example, Patent Document 1). The LED light source unit is provided with a heat sink extending rearward on the opposite side of the reflector unit.

JP-A-2015-167130

By the way, in the conventional configuration, the amount of heat radiation is restricted, which is disadvantageous for increasing the output of the LED light source unit.
Therefore, an object of the present invention is to efficiently secure the amount of heat radiation of the light source unit mounted on the reflector unit.

In order to achieve the above object, the present invention comprises a light source unit including a reflector unit and a light source unit mounted on a rear end portion of the reflector unit, wherein the light source unit supports a light emitting element. It has a support member connected to the rear end portion of the reflector unit, and the support member is a pedestal portion on which the light emitting element is arranged and a side of the reflector unit from an outer peripheral portion of the pedestal portion. and the enlarged diameter portion projecting annularly frontward, together to exit tension on the outer peripheral side of said radially enlarged portion, a first radiating portion comprising a plurality of radiation fins extending linearly in the longitudinal direction, of the light emitting element of the pedestal portion a second radiating portion extending rearwardly from the surface opposite to the arranged surface, was closed, wherein the first heat radiating unit and the second heat radiating unit, do not overlap with each other any of the side view and rear view It is characterized by that.

Further, the present invention is a pre-Symbol the first radiating portion and the enlarged diameter portion and the base portion, characterized in that it is integral.

Further, the present invention is characterized in that, in the lighting fixture, the first heat radiating portion is a heat radiating fin provided at intervals over the outer periphery of the support member.

Further, according to the present invention, in the lighting fixture, the second heat radiating portion includes a heat radiating fin extending rearward from the rear surface of the pedestal portion and a heat pipe for transferring the heat of the pedestal portion to the heat radiating fin. It is characterized by having.

According to the present invention, it is possible to efficiently secure the amount of heat radiation of the light source unit mounted on the reflector unit.

It is a perspective view of the LED lighting fixture which concerns on this embodiment. It is a side view of the LED lighting fixture. It is a side view of the LED light source unit. (A) is a view of the LED light source unit viewed from the front, and (B) is a view of the LED light source unit viewed from the rear. It is an exploded perspective view of the LED light source unit. FIG. 5 is a side view of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the LED lighting fixture 1 according to the present embodiment, and FIG. 2 is a side view.
The LED lighting fixture 1 is a lighting fixture suitable for floodlighting such as a parking lot, a signboard, or a hanging curtain, and is also referred to as a floodlight. The LED lighting fixture 1 includes a reflector unit 2 and an LED light source unit 4 mounted on a rear end portion 3 of the reflector unit 2.
The reflecting mirror unit 2 includes a reflecting mirror 11 having an irradiation opening 11A on the front surface, and a front glass (light transmitting member) 12 fixed to the front surface of the reflecting mirror 11 so as to cover the irradiation opening 11A. The front glass 12 is caulked and coupled to the peripheral edge of the irradiation opening 11A to prevent water from entering between the front glass 12 and the reflector 11.

The reflecting mirror 11 is formed in a tubular shape in which the opening area expands toward the front, and more specifically, it is formed in a reflecting mirror having a rotating paraboloid surface, a rotating ellipsoidal surface, or the like. The rear end portion of the reflector 11 (corresponding to the rear end portion 3 of the reflector unit 2) is formed with an opening (not shown) that communicates the inside and outside of the reflector 11.
An annular flange portion 13 (FIG. 2) is formed on the rear end portion 3 of the reflector unit 2, and the front end portion 21 (FIG. 2) of the LED light source unit 4 abuts on the flange portion 13. The front end portion 21 is provided with a bolt insertion portion 22 at intervals in the circumferential direction. A fastening member (not shown) is inserted into each of the bolt insertion portions 22 from the rear, and the LED light source unit 4 and the reflector 11 are fastened to each of the fastened portions 24 provided in the reflector unit 2. Be connected.

By removing these fastening members, the LED light source unit 4 can be removed from the reflector unit 2. That is, the flange portion 13 of the reflector unit 2 functions as a light source unit attachment / detachment portion to which the LED light source unit 4 is attached / detached. Further, the front end portion 21 of the LED light source unit 4 functions as a reflector unit attachment / detachment portion that is attached / detached to / from the reflector unit 2.

The reflecting surface of the reflecting mirror 11 is formed on a surface that reflects the light from the HID lamp of the HID lamp unit with a predetermined light distribution when the HID lamp unit is connected to the flange portion 13. For example, the reflector 11 is a component of an HID lighting fixture sold in combination with the above HID lamp unit, and for example, it is defined in a lighting fixture for public facilities (published by the Japan Lighting Industry Association). It is a component of HID lighting equipment that meets the common specifications.

The LED light source unit 4 includes an arm portion 15 rotatably connected to the LED light source unit 4. The arm portion 15 is a member for fixing the LED lighting fixture 1 to the installation location, and has a fixing plate 16 bolted to the installation surface. Since the arm portion 15 is rotatably connected to the LED light source unit 4, the orientation of the LED light source unit 4 with respect to the installation surface can be adjusted.

3A and 3B are side views of the LED light source unit 4, FIG. 4A is a view seen from the front, and FIG. 4B is a view seen from the rear. 5 is an exploded perspective view of the LED light source unit 4, and FIG. 6 is a side view of FIG. 5.
The LED light source unit 4 irradiates light toward the front of the reflector unit 2. The LED light source unit 4 is formed from a light source unit main body 33 (support member) that supports a substrate 32 (FIGS. 5 and 6) on which an LED module 31 (FIGS. 5 and 6) is mounted as a light source, and a light source unit main body 33. A heat sink 41 (FIGS. 5 and 6) projecting to the outer peripheral side and a heat pipe fin 51 extending rearward from the rear surface 33R (FIG. 6) of the light source unit main body 33 are provided.

The LED module 31 constitutes a COB-type LED in which a large number of LED elements are densely arranged to emit light in a plane shape, and can output light equivalent to that of a high-output type HID lamp unit. In this configuration, the power supply box (not shown) is placed separately from the LED light source unit 4. Therefore, by changing the power supply value, it is possible to configure the LED light source unit 4 that can include a plurality of optical performances.

As shown in FIG. 5, the light source unit main body 33 extends forward from the disk-shaped pedestal portion 34 on which the substrate 32 on which the LED module 31 is mounted is arranged, and the outer peripheral portion of the pedestal portion 34, and goes forward. It is integrally provided with a diameter-expanding portion 35 for expanding the diameter. The diameter-expanded portion 35 is expanded to the same diameter as the flange portion 13 (FIG. 2) of the reflector unit 2, and the front end of the diameter-expanded portion 35 constitutes the front end portion 21 of the LED light source unit 4.

An insulating plate 37, a substrate 32, a protective packing 38, a protective sheet 39, and an annular pressing plate 40 are laminated in this order on the pedestal portion 34, and the LED reflector 61 is sandwiched between the pedestal portion 34 and the pedestal portion 34. (Reflector for light emitting element) is attached to the pedestal portion 34 by the fastening member 62 (FIG. 4 (A)). For example, a ceramic plate is used for the insulating plate 37, a silicon rubber sheet is used for the protective packing 38, and a resin sheet is used for the protective sheet 39.

The pedestal portion 34 and the diameter-expanded portion 35 constituting the light source unit main body 33 are formed of a metal material having thermal conductivity such as an aluminum alloy. Further, the insulating plate 37, the protective packing 38, the protective sheet 39, and the holding plate 40 are also made of a material having thermal conductivity. As a result, the heat of the LED module 31 is transferred to the light source unit main body 33 and the LED reflector 61.
Instead of the protective packing 38 made of silicon rubber, a heat conductive sheet having high heat conductivity may be used.

The LED reflector 61 has a smaller diameter than the reflector 11 of the reflector unit 2 and has a tubular shape in which the opening area expands toward the front, and is formed into a rotating mirror such as a rotating object or a spheroid. Will be done. The LED reflector 61 reflects the light radiated from the LED module 31 arranged in the LED light source unit 4 forward with a predetermined light distribution.

Since the LED reflecting mirror 61 has a smaller diameter than the reflecting mirror 11 of the reflecting mirror unit 2, the light from the LED module 31 is not reflected by the reflecting mirror 11, but is reflected by the LED reflecting mirror 61. That is, the LED reflector 61 controls the light distribution of the LED module 31 without contributing the reflector unit 2 to the control of the light distribution.

Further, the LED reflecting mirror 61 is formed of an aluminum alloy which is a metal material having thermal conductivity, and extends into the reflecting mirror 11 as shown in FIGS. 1 and 3. As a result, the heat transferred from the LED module 31 to the pedestal portion 34 can be efficiently dissipated from the LED reflector 61.
The heat released from the LED reflector 61 is released to the outside through the reflector 11 and the front glass 12. In this configuration, the reflector 11 is made of a metal material having thermal conductivity such as an aluminum alloy, and the reflector 11 can efficiently dissipate heat to the outside.

Next, the heat sink 41 (first heat radiating unit) will be described.
The heat sink 41 is formed by a diameter-expanded portion 35 of the light source unit main body 33 and a plurality of heat-dissipating fins 41A projecting from the diameter-expanded portion 35 to the outer peripheral side. The plurality of heat radiation fins 41A are integrally formed with the light source unit main body 33.
In this configuration, the light source unit main body 33 is manufactured by die-casting an aluminum alloy to integrally form the heat radiation fin 41A, the pedestal portion 34, and the enlarged diameter portion 35.

As shown in FIGS. 4 (A) and 4 (B), the plurality of heat radiating fins 41A are provided at intervals over the entire circumference of the diameter-expanded portion 35, and as shown in FIG. 6, the diameter is expanded. It points linearly from the front end of the portion 35 (corresponding to the front end portion 21 of the LED light source unit 4) toward the rear.
As shown in FIG. 6, the rear end of the heat radiation fin 41A corresponds to the rear surface of the pedestal portion 34 of the light source unit main body 33 (corresponding to the rear surface 33R of the light source unit main body 33, and is shown below with the same reference numerals. ), And does not overlap with the heat pipe fin 51 in a side view.

Since the heat sink 41 projects outward from the enlarged diameter portion 35, which is the largest in the radial direction of the light source unit main body 33, the heat dissipation area can be efficiently obtained and from a position close to the LED module 31 which is a heat source. Can dissipate heat. Further, since heat is radiated at a position different from that of the heat pipe fin 51, the heat released from the heat sink 41 is difficult to be transferred to the heat pipe fin 51. Further, since the heat sink 41 projects toward the outer peripheral side of the rear end portion 3 of the reflector unit 2 (see FIG. 2), heat dissipation from the heat sink 41 is not hindered by the reflector unit 2.
As a result, the heat of the LED module 31 transmitted from the pedestal portion 34 of the light source unit main body 33 to the enlarged diameter portion 35 can be efficiently dissipated, and the heat influence on the heat pipe fin 51 can be suppressed.

Next, the heat pipe fin 51 (second heat radiating portion) will be described.
The heat pipe fins 51 are a plurality of heat radiating fins 52 extending rearward from the rear surface of the pedestal portion 34 of the light source unit main body 33, and the heat radiating fins 52 of the LED module 31 transmitted to the pedestal portion 34 of the light source unit main body 33. It is provided with a plurality of heat pipes 53 (four in this configuration) to be transmitted to.
The plurality of heat radiation fins 52 are substantially rectangular plate materials, and are formed of a plate material made of an aluminum alloy, which is a lightweight metal material having excellent thermal conductivity. Each of the heat pipes 53 penetrates all the heat radiating fins 52, and these heat radiating fins 48 are laminated and bundled together so as to be spaced apart from each other.

These heat radiation fins 52 are arranged so as to extend vertically from the rear surface 33R of the pedestal portion 34 by a support metal fitting (not shown). The support metal fitting (not shown) supports the heat radiating fins 52 by providing a predetermined gap between the pedestal portion 34 and the rear surface 33R, and air can flow between the pedestal portion 34 and the radiating fins 52 through this gap. , The heat accumulation of the rear surface 33R of the pedestal portion 34 is suppressed.

In this configuration, the light source unit main body 33 is detachably provided with a resin cover 55 that covers the entire heat pipe fin 51. The resin cover 55 is provided with a large number of holes for passing air, and does not interfere with heat dissipation of the heat pipe fins 51.
As shown in FIG. 3, the resin cover 55 is located behind the heat sink 41 protruding from the light source unit main body 33 to the outer peripheral side, and as shown in FIG. 4 (B), the inner circumference of the heat sink 41. Located in. That is, the heat pipe fin 51 is located behind the heat sink 41 and on the inner circumference.

Similar to the heat sink 41, the heat pipe fin 51 can also dissipate heat from a position close to the LED module 31 which is a heat source. In addition, the space behind the pedestal portion 34 can be used to efficiently increase the heat dissipation area.
Further, since the heat pipe fin 51 does not overlap with the heat sink 41 in either the side view (FIG. 3) or the rear view (FIG. 4 (B)), heat can be dissipated from a position different from that of the heat sink 41, and the heat pipe fin 51 is discharged from the heat pipe fin 51. The heat is not easily transferred to the heat sink 41.
As a result, the heat pipe fins 51 can efficiently dissipate the heat of the LED module 31 transmitted to the pedestal portion 34 of the light source unit main body 33, and can suppress the heat influence on the heat sink 41.

As described above, in the present embodiment, the light source unit main body 33 (support member) mounted on the reflector unit 2 of the LED light source unit 4 projects to the outer peripheral side of the rear end portion 3 of the reflector unit 2. A heat sink 41 (first heat dissipation unit) that dissipates heat from the light source unit main body 33 and a heat pipe fin 51 (second heat dissipation unit) that extends rearward from the heat sink 41 to dissipate heat from the light source unit main body 33. I have.
As a result, the heat radiating area of the LED light source unit 4 can be efficiently secured by the heat sink 41 extending to the outer peripheral side and the heat pipe fins 51 extending to the rear, and the radiating amount can be efficiently secured. Therefore, it is possible to easily cope with high output of the LED light source unit 4.

If the heat dissipation area is secured only by the heat pipe fins 51 without providing the heat sink 41, it is necessary to increase the size of the heat dissipation fins 52 and the heat pipes 53 or increase the number of heat pipes 53, which makes the structure complicated. It leads to the increase in size and size. On the other hand, in this configuration, by providing the heat radiation fin 41A in the light source unit main body 33 while making the heat pipe fin 51 compact, a wide heat radiation area can be secured, and the structure becomes complicated and the size can be suppressed. ..

Further, the LED light source unit 4 has a pedestal portion 34 in which the LED module 31 (light emitting element) is arranged, and the pedestal portion 34 and the heat sink 41 are integrally formed. As a result, the increase in the number of parts can be suppressed, and the heat of the LED module 31 can be efficiently dissipated from the heat sink 41.

Further, the heat sink 41 has heat radiating fins 41A provided at intervals over the outer periphery of the light source unit main body 33. As a result, the heat dissipation area can be efficiently secured, and the heat sink 41 can be easily integrally molded with the light source unit main body 33. Further, since the heat sink 41 is formed by using the space formed behind the reflector unit 2 and on the outer periphery of the light source unit main body 33, it is possible to suppress the increase in size of the LED lighting fixture 1 and the LED light source unit 4.

Further, the heat pipe fin 51 has a heat radiating fin 52 extending rearward from the rear surface 33R of the pedestal portion 34, and a heat pipe 53 for transferring the heat of the pedestal portion 34 to the radiating fin 52. As a result, the space behind the pedestal portion 34 is used to secure a heat dissipation area, and heat can be dissipated from a position close to the LED module 31.

Further, the heat sink 41 and the heat pipe fin 51 do not overlap each other in both the side view and the rear view of the LED light source unit 4. As a result, heat can be dissipated from different positions, which is advantageous in improving heat dissipation efficiency. Further, the heat sink 41 does not get in the way when assembling the heat pipe fin 51, which is advantageous for improving the assembling property and the like.

Further, the LED light source unit 4 includes an LED reflector 61 (light emitting element reflector) that controls the light distribution of the LED module 31 without contributing the reflector unit 2 to the control of the light distribution. The LED reflector 61 is made of a material having thermal conductivity, is connected to the light source unit main body 33, and extends into the reflector unit 2. As a result, the heat of the LED module 31 can be efficiently dissipated from the LED reflector 61 as well. Therefore, the amount of heat radiated from the LED light source unit 4 is further improved.

The above-described embodiment is merely an example of one aspect of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.
For example, instead of the LED light source unit 4, a light source unit other than the LED, for example, an organic EL may be used.
Further, for example, the heat sink 41 and the heat pipe fin 51 are not limited to the structure using the heat radiating fins 41A and 52 or the heat pipe 53, and other known heat radiating structures may be used.
Further, for example, the case where the present invention is applied to the floodlight type LED lighting fixture 1 has been described, but the present invention is not limited to this, and various types of lighting including a reflector unit 2 and a light source unit connected to the reflector unit 2 are provided. The present invention can be widely applied to an instrument.

1 LED lighting equipment (lighting equipment)
2 Reflector unit 3 Rear end of reflector unit 4 LED light source unit 11 Reflector 31 LED module 31 (light emitting element)
33 Light source unit body (support member)
34 Pedestal 41 Heat sink (1st heat sink)
41A, 52 Heat dissipation fins 51 Heat pipe fins (second heat dissipation part)
53 Heat pipe 61 Reflector for LED (Reflector for light emitting element)

Claims (4)

Reflector unit and
In a luminaire having a light source unit mounted on the rear end of the reflector unit.
The light source unit has a support member that supports a light emitting element and is connected to the rear end portion of the reflector unit.
The support member
The pedestal on which the light emitting element is arranged and
An enlarged diameter portion that annularly protrudes from the outer peripheral portion of the pedestal portion to the front side, which is the side of the reflector unit, and
Together to exit tension on the outer peripheral side of said radially enlarged portion, a first radiating portion comprising a plurality of radiation fins extending linearly in the longitudinal direction,
Have a, a second radiating portion extending rearwardly from the surface opposite to the arranged surface of the light emitting element of the base portion,
A lighting fixture characterized in that the first heat radiating unit and the second heat radiating unit do not overlap each other in both side view and rear view. The light fixture according to claim 1 which is the first radiating portion and the enlarged diameter portion and the front Symbol pedestal, characterized in that integral. Wherein the plurality of heat dissipating fins, luminaire according to claim 1 or 2, characterized in Tei Rukoto spaced over the outer periphery of the support member. The second heat radiating part from claim 1, characterized in that it comprises a heat pipe to convey the surface of the rear side and the heat radiating fins extending rearward, the heat of the base portion to the heat radiating fins in the pedestal The lighting equipment according to any one of 3.

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