JP3147238U - LED lighting device for machine tools - Google Patents

Abstract

Provided is an LED lighting device for a machine tool that has a uniform light source, can cancel light interference during illumination, and can obtain excellent heat conduction and heat dissipation effects.
An LED illumination device for a machine tool includes an illumination cover body 11 having an accommodation space 131 therein, and an LED module that is provided in the accommodation space 131 of the illumination cover body 11 and includes a plurality of chips. 21 is included. Thereby, since the irradiation area is concentrated on one point, the luminance is uniform and provides a good visual effect, and even when used for a long time, it does not get tired easily. Further, the structure is simple, the volume of the lighting device is not excessively increased, a reliable heat dissipation effect is brought about, and high utility is achieved.
[Selection] Figure 1

Description

  The present invention relates to an illumination device, and more particularly to an LED illumination device for machine tools.

LEDs (Light Emitting Diodes) have a long service life, power saving, and bright light. They are widely used in lighting fixtures instead of conventional low-efficiency light bulbs with short lifespan and high power consumption. Has been. However, LEDs are manufactured by mounting one chip on one light emitter in the packaging process. Therefore, the illuminance can be increased by combining a plurality of LEDs in order to eliminate the drawback of insufficient illuminance of the LEDs. However, when a plurality of LEDs emit light at the same time, the irradiation directions of the light emitters inside the LEDs are different from each other, so the light emitted from each LED may interfere with each other. There is a disadvantage that the peripheral part is dark, the aim of the light source is not aimed, and it is not suitable for illumination of an object to be illuminated.
In addition, since the LED has low heat resistance, the LED main body, surrounding electronic components, or the power supply device are easily damaged if the heat is not dissipated when continuously used for a certain period of time.

  As shown in FIG. 6, the heat dissipation structure of the conventional LED lighting device is mainly configured by a lighting cover 51, an LED module 52, a heat conducting tube 53, and a heat radiating fin 54. Among them, the LED module 52 is mounted in the lighting cover 51, one end of the heat conducting tube 53 is bonded to the mounting portion 55 inside the lighting cover 51, and the other end is bonded to the radiation fin 54. When the LED module 52 emits light and dissipates heat, the generated heat is guided through the heat conducting tube 53 from the mounting portion 55 inside the illumination cover 51 to the heat dissipating fins 54 and dissipated. However, the heat dissipation structure of the conventional LED lighting device described above has a limited heat dissipation effect because the contact area between the heat guide tube 53 and the lighting cover 51 is limited when actually used. Further, in the heat dissipation structure of this type of design, since it is necessary to separately provide the heat conducting tubes 53 and the heat dissipation fins 54 on the outside of the lighting cover 51, the volume of the entire lighting device becomes large, and the assembly of the device itself becomes complicated. There is.

  As shown in FIG. 7, in another heat dissipation structure of the conventional LED lighting device, a mounting portion 62 is provided inside a pedestal 61, and the LED module 63 is mounted on the mounting portion 62. Further, an electric wire 64 is passed through the mounting portion 62 to supply power to the LED module 63. A hemispherical radiating fin 65 is placed around the mounting portion 62, and the radiating fin 65 radiates heat transmitted from the LED module 63 into the air. However, this type of heat dissipation structure has a drawback that the heat dissipation effect is low if the heat dissipation area is small because the heat dissipation effect is obtained only when the heat dissipation fins 65 and the air come into contact with each other. Further, in the case of this type of heat dissipation structure, when the LED module emits light, the hemispherical heat dissipation fins 65 are directly inside the LED module 63 even though the LED module 63 actually generates heat. Since they are not in contact with each other, an effective heat radiation effect cannot be obtained, and the LED lighting device cannot obtain a sufficient heat radiation effect, so that there is a drawback that the service life of the LED is short.

A first object of the present invention is to provide an LED lighting device for a machine tool that has a uniform light source and can cancel the light interference phenomenon during illumination.
A second object of the present invention is to provide an LED lighting device for machine tools capable of obtaining excellent heat conduction and heat dissipation effects.

  As described in claim 1, in order to achieve the above-described problem, an LED lighting device for a machine tool according to the present invention includes a lighting cover body having a housing space therein, and a housing space of the lighting cover body. The LED module is provided and includes a plurality of chips.

Hereinafter, an LED lighting device for a machine tool according to an embodiment of the present invention will be described with reference to the drawings.
(One embodiment)
As shown in FIG. 1, an LED lighting device for a machine tool according to an embodiment of the present invention includes an LED module 21 provided inside a lighting cover main body 11. The LED module 21 includes a plurality of LEDs, and these LEDs are mounted on a single printed board. When the LEDs are turned on, the light sources of the respective LEDs are concentrated, and an object requiring light can be irradiated.

  The illumination cover main body 11 includes a pedestal 12 and an external cover 13. The pedestal 12 has a mounting surface 121 on which the LED module 21 is mounted. The other end of the base 12 is extended to the outside and has a plurality of heat radiation fins 122.

  The outer cover 13 has a cylindrical shape and has an accommodation space 131 inside. A plurality of heat dissipating fins 132 arranged in parallel are provided on the outer periphery of the outer cover 13. One end of the external cover 13 is joined to the end surface of the mounting surface 121 of the pedestal 12, and the LED module 21 is accommodated in the accommodating space 131 of the external cover 13.

  The reflecting mirror 14 is coaxially mounted on the shaft portion of the housing space 131 of the outer cover 13, the small diameter end 142 of the reflecting mirror 14 is in contact with the mounting surface 121 of the base 12, and the LED module 21 is the small diameter end 142 of the reflecting mirror 14. Housed inside. As shown in FIG. 2, when the LED module 21 is lit, the reflecting mirror 14 adjusts the light source to be diverged and concentrates the light source emitted by the LED module 21 in the same direction.

  The other end of the outer cover 13 is in contact with the lens unit 15. The lens unit 15 includes a lens 16, a protective cover 17, and a fixing ring 18. The lens 16 and the protective cover 17 are joined to the large diameter end 141 of the reflecting mirror 14. As shown in FIG. 3, since the lens 16 of the present embodiment uses a microlens, the light emitted from the LED module 21 passes through the lens 16 so that the light source converges and concentrates. On the other hand, when the microlens is not used, a phenomenon that the light source diverges occurs.

  The fixing ring 18 is bonded to one end of the outer cover 13 opposite to the end surface where the outer cover 13 is bonded to the pedestal 12, and fixes the protective cover 17, the lens 16, and the reflecting mirror 14 inside the accommodation space 131 of the outer cover 13.

  In the present embodiment, the light source irradiated by the LED module 21 is refracted through the reflecting mirror 14 and further refracted by the microlens of the lens 16 to converge and concentrate on the object to be irradiated. The entire processing area where the object to be irradiated is placed is brightened evenly, and a good visual effect is obtained, and the phenomenon that the processing becomes difficult due to a lack of light source or a dazzling phenomenon can be avoided. It becomes possible to improve the processing accuracy when processing the object.

  The LED used in the present embodiment is a high-intensity LED (High Power LED), and can provide an ideal light source that is high-intensity, soft, stable, continuous, and close to natural light. The color temperature of the light source produced by the LED reaches 5000K or more, and the object can be illuminated more clearly.

  The LED module 21 of the present embodiment is an LED light manufactured using a multi-chip single module packaging technique. The LED light is provided on a printed circuit board, and has a plurality of light emitting components 22 on the LED light, and each light emitting component 22 of the LED light becomes a light source of a high-intensity LED when energized and lit. In addition, since each light emitting component 22 is provided on one LED light, the volume of the LED module 21 can be greatly reduced, and each light emitting component 22 emits a light source in the same direction when emitting light. In this case, it is possible to provide a sufficient and well-prepared light source, and it is possible to avoid phenomena such as shadow overlap due to light interference.

  As shown in FIG. 4, when the LED lighting device according to the present embodiment is used, the LED module 21 is positioned on the mounting surface 121 of the base 12. Therefore, since the rear of the light emitting component 22 of the LED module 21 generates heat, the generated heat is transmitted to the radiation fins 122 of the base 12. The heat generated by the pedestal 12 is further quickly transmitted to the radiating fins 132 of the outer cover 13. Since this embodiment has a large heat radiation area, the heat radiation effect of the entire LED lighting device according to an embodiment of the present invention is high.

  LED Illumination Device FIG. 5 shows a state in which an LED illumination device according to an embodiment of the present invention is mounted on a machine tool 41. When cutting with the machine tool 41, the protective cover 17 provided on the outer cover 13 prevents chips from entering the housing space 131 of the outer cover 13 during processing.

The present invention has the following advantages.
First, since the present invention uses an LED as a necessary illumination light source, the light source produced by the LED does not contain ultraviolet rays or infrared rays, and does not cause radiation damage to the human body. In addition, since a low voltage current power source is used for the LED, it is possible to avoid a phenomenon in which the emitted light is dazzling or flickering. Furthermore, since the irradiation area is concentrated at one point, the luminance is uniform and provides a good visual effect, and even when used for a long time, it does not get tired easily.

  Second, the structure of the present invention is simple, does not excessively increase the volume of the lighting device, provides a reliable heat dissipation effect, and has high practicality.

It is a disassembled perspective view which shows the LED lighting apparatus for machine tools by one Embodiment of this invention. It is sectional drawing which shows the irradiation state after the assembly of the LED lighting apparatus for machine tools by one Embodiment of this invention. It is a schematic diagram explaining the case where a microlens is used for the lens unit of the LED lighting apparatus for machine tools by one Embodiment of this invention, and the case where a microlens is not used. It is sectional drawing which shows the heat dissipation state after the assembly of the LED lighting apparatus for machine tools by one Embodiment of this invention. 1 is a perspective view illustrating a state in which an LED lighting device according to an embodiment of the present invention is mounted on a machine tool. It is a disassembled perspective view which shows the conventional LED illuminating device for machine tools. It is a disassembled perspective view which shows another kind of conventional LED lighting apparatus for machine tools.

Explanation of symbols

  11: Lighting cover body, 12: Pedestal, 121: Mounting surface, 122: Radiation fin, 13: External cover, 131: Housing space, 132: Heat-conducting fin, 14: Reflector, 141: Large diameter end, 142: Small diameter end 15: lens unit, 16: lens, 17: protective cover, 18: fixing ring, 21: LED module, 22: light emitting component, 41: machine tool, 51: lighting cover, 52: LED module, 53: heat conducting tube, 54: Radiation fin, 55: Mounting part, 61: Base, 62: Mounting part, 63: LED module, 64: Electric wire, 65: Radiation fin

Claims (6)

A lighting cover body having a housing space inside;
An LED module provided in the housing space of the lighting cover main body, having an LED light manufactured by integrating a plurality of chips, and providing a light source necessary for illumination;
An LED lighting device for machine tools, comprising: The lighting cover body is configured by joining a pedestal and an external cover,
2. The machine tool according to claim 1, wherein one end of the pedestal forms a mounting surface, the LED module can be mounted, and the other end of the pedestal extends outward and includes a plurality of heat radiation fins. LED lighting device. The periphery of the outer cover has a plurality of parallel radiating fins,
3. The LED illumination device for machine tools according to claim 2, wherein both ends of the outer cover are joined to the outside, and one end of the outer cover is joined to an end face of the mounting surface of the pedestal. The outer cover has a reflecting mirror,
The reflecting mirror has a long conical shape, has a large-diameter end and a small-diameter end, is mounted coaxially with the central axis of the outer cover, the small-diameter end is joined to the mounting surface of the pedestal, and the LED module is The LED illumination device for machine tools according to claim 2, wherein the LED illumination device is joined to the small diameter end. A lens unit is placed on the end surface of the outer cover opposite to the pedestal,
The LED illumination device for a machine tool according to claim 2, wherein a micro lens is used for the lens unit, and a light source generated by the LED module can be converged and concentrated. A lens unit is placed on the end surface of the outer cover opposite to the pedestal,
The reflecting mirror is provided inside the outer cover,
The reflecting mirror has a long conical shape, has the large diameter end and the small diameter end,
The small diameter end is joined to the mounting surface of the pedestal,
The LED module fits inside the small diameter end of the reflector,
The lens unit includes a lens, a protective cover, and a fixing ring,
The lens and the protective cover are bonded to the large-diameter end of the reflecting mirror, and the microlens is used for the lens,
The fixing ring is used for joining on an end surface of the outer cover opposite to the pedestal,
The LED lighting device for a machine tool according to claim 2, wherein the protective cover, the lens, and the reflecting mirror are fixed inside the outer cover by the fixing ring.

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