JP2012119289A - Led lamp fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lamp fitting which has a shape close to a straight-tube type fluorescent lamp currently used for general lighting, has the same or higher brightness, restrains temperature rise of the fitting due to lighting heat generation, can use and easily exchange the currently-used fluorescent lamp mounting fixture, cover a progressive nature of LED light, and can adjust to illuminate evenly with a wide angle.SOLUTION: The LED lamp fitting is structured of LEDs 1 and flat circuit bodies 2 arranged in series, and jointed to a heat radiation holder 3 having a space in a lateral U shape jointed to a light case 4 with its lower part open and a heat radiation window fitted to either side, a terminal socket 5 having a terminal in free rotation for supplying electricity and with its one end of right-left ends in a length direction to the flat circuit bodies 2 with lead wires, and a light cover 7 for alleviating glare of LED 1 beams and protecting the LEDs 1 and the flat circuit bodies 2. A total length, a diameter of a round terminal and a distance between terminals are the same as the ones of a present standard fluorescent lamp, and therefore, the currently-used fluorescent lamp mounting device can be used without any change.

Description

  The present invention relates to an LED lamp in which a plurality of LEDs are arranged as a light source.

  LEDs have gradually been used in lighting fixtures because of their advantages such as power saving, long life, and environmental friendliness. The LED had a problem of insufficient brightness at the initial stage, but due to recent material improvements and rapid technological advances, the luminous efficiency has been greatly improved, becoming comparable to the brightness of conventional lighting fixtures, Starting with automotive lighting equipment, it has come to be widely used for traffic signals. More recently, conventional lighting fixtures are being replaced with general lighting indoors and outdoors.

  There are various types of LED lamps. In the straight tube type, for example, a flat circuit body in which a plurality of LEDs are mounted at a predetermined interval in the longitudinal direction and two flat cables are mounted on a support body supporting the flat circuit body. There is known a lighting fixture of a type in which a connection circuit is formed with a flat circuit body that is disposed and supported, and an LED of the flat circuit body is energized (see Patent Document 1).

  In addition, it is evenly arranged on the circuit board provided inside the tube, and is inserted into both ends of the plurality of LED lamps and the tube electrically connected to the circuit board, and is electrically connected to the circuit board. An LED lamp tube comprising: two connected power adapters; and a protective cover having a plate body provided on the tube body and provided with a plurality of perforations provided so as to correspond to the heat radiation holes A protective cover having a good heat dissipation effect by accelerating the heat dissipation rate and an LED lamp tube including the same are provided (for example, see Patent Document 2).

JP 2006-216296 A JP 2010-27212 A

  The straight tube type LED lamp disclosed above is a built-in power supply type, and does not have a structure capable of adjusting the angle of the LED light in a mounted state. The present invention is an external power supply type, which is close to the shape of a straight tube fluorescent lamp used for general lighting, has a luminance equal to or higher, suppresses the temperature rise of the lamp due to lighting heat generation, and further uses a fluorescent lamp fixture currently in use It is an object of the present invention to provide an LED lamp that can be easily replaced by utilizing the LED, covers straightness of LED light, and can be adjusted to illuminate uniformly over a wide angle.

  In order to solve the above-mentioned problems, the present invention is a straight tube type LED lamp, and a flat circuit body 2 in which a plurality of LEDs 1 are mounted at a predetermined interval in the longitudinal direction, and the flat circuit body is disposed on one outer surface. A supporting heat dissipating holder 3 and a back surface that encloses the heat dissipating holder and to which the other outer surface facing the one outer surface of the heat dissipating holder is bonded, the surface facing the rear surface being opened, And a terminal socket 5 having a terminal 6 electrically connected to one end of the flat circuit body, and a terminal socket 5 having a terminal not electrically connected to the other end. Features.

  Further, both ends of the light case are structured to be inserted into a terminal socket having a ring-shaped cross section in a rotatable state.

  The light case has a plurality of heat radiating windows 11 on both side surfaces, and a protrusion capable of supporting the light cover 7 disposed on the opening surface of the light case is provided at a longitudinal end portion of the both side surfaces. And

  In addition, a heat dissipation holder having a U-shaped cross section is provided.

  LED lamps that are safe, low power consumption, and safe lamps instead of fluorescent tube lamps currently used in homes, company offices, factory lighting, street lights, and various indicator lights Can contribute greatly to the conservation of the global environment.

  In addition, this LED lamp has the same shape and size as the standard type of fluorescent lamps that are currently used in various places, replacing the fluorescent ballasts used in various places with AC / DC adapters. The replacement is easy and does not require extensive construction.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall schematic view showing the overall configuration of the present invention, and FIG. 2 is an enlarged schematic view showing main components. The configuration of the present invention includes an LED 1, a flat circuit body 2 on which the LED is mounted, a heat dissipation holder 3 that suppresses temperature rise due to heat generation of the LED, and a light case 4 that holds the whole and suppresses temperature rise by a large number of heat dissipation windows 11. A terminal socket for controlling input / output of power distribution, and a light cover 7 for protecting the LED 1 and the flat circuit body 2 and softening light rays. With this configuration, it is possible to provide an LED lamp that is lightweight and suppresses temperature rise.

  FIG. 3 is a schematic cross-sectional view of the LED lamp of the present invention. The light case 4 is fixed by a light interference fit by friction caused by the deformation repulsive force of the inner wall of the terminal socket 5 and the four corner ridges 10 of the light case 4. Further, since this fixing force is weak, it can be moved freely by hand, and can be rotated to an arbitrary angle and fixed to hold the light source unit at a predetermined angle.

  FIG. 4 is a schematic view of the light case 4, which has a large number of heat radiation windows 11 on both side surfaces of the LED lamp. The heat radiating window is provided for the purpose of reducing the temperature rise due to heat generation of the LED and the flat circuit body by the inflow of outside air. The protrusions 12 at both ends of the side surface serve to hold the light cover 7.

  FIG. 5 is a schematic cross-sectional view of the heat dissipation holder 3. The heat dissipating holder 3 is substantially U-shaped, and has a function of suppressing a temperature rise due to heat generation when the LED 1 and the flat circuit body 2 are energized by allowing outside air to flow into the heat dissipating space 13.

  FIG. 6 shows the result of measuring the temperature rise at each position of the LED lamp by changing the material and shape of the heat dissipation holder. The “gypsum board” is a flat plate having a thickness of about 5 mm that is generally used as a heat insulating material. "Aluminum alloy" is a 0.5 mm thick aluminum plate bent into a U-shape with a gap of about 9 mm. "PVC (resin)" was used by inverting a cover with a lid made of vinyl chloride, which is commercially available for wiring. The heat insulation effect is high with resin, and since it has a space, heat dissipation is also high. For “aluminum alloy / rubber”, an aluminum alloy plate having a thickness of 1.0 mm was bent into a U shape, and a rubber flat plate was bonded thereon. “SUS304 / gypsum board” was formed by bending a 0.8 mm SUS304 (stainless steel) plate into a U-shape and bonding a gypsum board flat plate to the top. “SUS304 / gypsum board / circle” is obtained by covering the outside of “SUS304 / gypsum board” with a transparent resin tube. The “aluminum alloy / rubber / round” is formed by covering the outside of the “aluminum alloy / rubber” with a transparent resin tube. Looking at the results of comparing the temperature rise, the temperature rise is generally large on the input / output side. Therefore, when the results at the same position were compared, it was 41 ° C. for “gypsum board”, “aluminum alloy” and “SUS304 / gypsum board / round”, and 39 for “PVC (resin)” and “SUS304 / gypsum board”. The temperature was 38 ° C. for “aluminum alloy / rubber” and “aluminum alloy / rubber / round”. From the results of the temperature rise, the temperature rise when using “aluminum alloy / rubber” is the smallest. However, regardless of the material, the temperature difference is a small difference of 3 ° C., and no particular difference is observed. Next, we examined each point of weight, strength, ease of manufacture, and durability. “Gypsum board” is brittle and has poor processability. “Aluminum alloy” has abundant members and good workability, and there is no problem in strength even with a thickness of 0.5 mm. Space for heat dissipation can be secured, and above all, there is an advantage that it can be handled as a single item, and “aluminum alloy” is the best heat dissipation holder. “PVC (resin)” has a difficulty in strength. SUS304 is excellent in corrosion resistance, but has a specific gravity three times that of an aluminum alloy, and has a large problem in workability of mounting and holding on the ceiling. The other is a combination of two members and three members, which is inferior to an aluminum alloy bent sheet metal in terms of labor. Finally, the “aluminum alloy” bent sheet metal holder shaded in Table 1 is the best.

  As shown in FIG. 7, Table 1 utilizes the light interference fit of the corner ridge of the light case 4 and the inner wall of the terminal socket 5 described in FIG. 3, and the optical axis of the LED lamp is 0 degrees, 15 degrees, 30 degrees, It is the result of measuring the illuminance (lux) when the distance from the floor is 0.5 m, 0.7 m, 1.0 m, and 2.0 m with an inclination of 45 degrees. The LED lamp of the present invention is intended to be used as an alternative to indoor fluorescent lamps (40W, 20W, 10W), or as a street light or emergency light, and a light cover is not required depending on the method of use and the place of use. In some cases, a transparent cover is required. Therefore, illuminance was measured in two ways: “without light cover” and “with transparent light cover”. Table 2 shows the results of measuring the illuminance of a 40W series of fluorescent lamps commonly used at the measurement points in FIG. As a standard of illuminance, a minimum illuminance of 300 lux or more was obtained on a desk in a school classroom (0.75 m from the floor). When arranged based on this standard, the shaded area is within a range satisfying the standard at 0.7 m from the floor. In the current fluorescent lamp, the illuminance is below the reference even at a depth of 0.7 m from the floor (0 degree), and some auxiliary lighting is required. On the other hand, the LED lamp of the present invention has sufficient illuminance even at 0.7 m from the floor, and satisfies this reference illuminance even when the angle is rotated up to 30 degrees. This result proves that the LED lamp of the present invention can be used as an illuminator that exceeds existing fluorescent lamps, and that it can be freely rotated with respect to the required illuminance using a function that can be rotated and fixed at an arbitrary position, and that it can cope with a wide range. is doing. If this function is utilized, the inclination angle can be set after the lamp is installed, so that the illuminance can be finely adjusted in the room and the wall surface where the LED lamp is installed. For example, it is possible to secure higher illuminance on the desks used by the blackboard and “student environmental hygiene standards” established by the Ministry of Education, Culture, Sports, Science and Technology, which is used by the Ministry of Education, Culture, Sports, Science and Technology.

  The light case 4 developed in the present invention was finished by punching the left and right heat dissipation windows with a press and bending it with a bender when the aluminum plate was 0.5 mm flat. The feature of this light case is that, as shown in FIG. 4, a large number of windows are provided on both sides to improve heat dissipation, and both ends are further bent to provide a support for the light cover. In particular, the windows on both sides have a width of 5 mm and a pitch of 10 mm, thereby improving air circulation and reducing the weight. In addition, the shape, size, and distance between the windows of the heat radiating window can be freely selected according to the application without being limited to the above specifications. The protrusions 12 at the lower ends of the both side surfaces are for supporting the light cover, but those that do not require the light cover can be removed, saving the material used and reducing the bending process cost. Further, any material and manufacturing method can be used as long as it can be fitted with the inner wall of the terminal socket, can be freely rotated, and can be fixed at an arbitrary position.

  The LED lamp of the present invention is different from the conventional built-in power supply type, and is generally a commercially available AC / DC adapter, and is designed to input / output from / to the flat circuit body from the outside through the terminal of the terminal socket. ing. Therefore, only one terminal socket for the power supply is required, and the other is only required to support the LED lamp. In addition, because of the external power supply, multiple lamps can be controlled by using an adapter with a large electrical capacity.

  Currently, the spread of fluorescent lamp type LED lamps is still low. The present invention can use the fixture of the current fluorescent lamp as it is, and can be easily replaced by simply replacing the ballast with an AC / DC adapter. In addition, the heat-insulation holder and light case have been devised to reduce heat generation below current fluorescent lamps, thus increasing safety. The specifications are also compatible with a wide range of 40W, 20W, 10W fluorescent lamps, street lights and emergency lights.

It is the whole LED lamp schematic diagram. It is an expansion schematic diagram of main components. It is a cross-sectional schematic diagram of a main component. It is a light case schematic diagram. It is a cross-sectional schematic diagram of a heat dissipation holder part. It is a temperature rise comparison of a heat dissipation holder. It is the illumination intensity measurement conditions of an LED lamp.

1 LED
2 Flat circuit body 3 Heat radiation holder 4 Light case 5 Terminal socket 6 Terminal 7 Light cover 8 Lead wire 9 Crimp terminal 10 Corner ridge 11 Heat radiation window 12 Projection 13 Heat radiation space

Claims (4)

A straight tube type LED lamp,
A flat circuit body (2) mounted with a plurality of LEDs (1) at predetermined intervals in the longitudinal direction;
A heat dissipation holder (3) for supporting the flat circuit body on one outer surface;
A light case (4) having a U-shaped cross-section, including a back surface that encloses the heat dissipating holder, and has a back surface to which the other outer surface facing the one outer surface of the heat dissipating holder is bonded. And a terminal socket (5) having a terminal (6) electrically connected to one end of the flat circuit body, and a terminal socket (5) having a terminal not electrically connected to the other end. LED lamp characterized by The LED lamp according to claim 1, wherein both ends of the light case are inserted into a terminal socket having a ring-shaped cross section so as to be rotatable. A plurality of heat radiating windows (11) are provided on both side surfaces of the light case, and protrusions capable of supporting the light cover (7) disposed on the opening surface of the light case are provided at the longitudinal ends of the both side surfaces. The LED lamp according to claim 1 or 2. The LED lamp according to any one of claims 1 to 3, further comprising a U-shaped heat radiation holder.

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