JP5124315B2 - Lighting fixture - Google Patents

Description

  In recent years, the light emission efficiency and light output of LEDs have improved, and white light emission has become possible. For example, lighting devices for showcases and show windows are required to have a line shape instead of fluorescent lamps. In addition, it is expected to spread in terms of power saving and long life. The present invention enables, for example, close attachment to an outlet rail to achieve the above object.

  FIGS. 7 to 9 show examples of the configuration of the LED lighting apparatus 90 that can be attached to this type of conventional outlet rail (referred to as a linear outlet in the conventional example). As shown in FIG. 8, a terminal 92 for being inserted into the outlet rail is attached to the frame 91 of the LED lighting apparatus 90, and a wiring 94 is inserted from the terminal 92 into a housing 93 attached to the frame 91. Has been drawn.

In this conventional example, since the casing 93 is connected to the frame 91 by the rotation axis C, the casing 93 can rotate around the rotation axis C, that is, as shown in FIG. In addition, the illumination direction can be changed in a direction perpendicular to the outlet rail by tilting the housing 93 with the rotation axis C. A plurality of LEDs are installed in the casing 93, and the upper surface of the LEDs 94 is covered with a milky white resin plate 95, for example.
Utility Model Registration No. 3136599

  In recent years, it has become possible to increase the power of LEDs and increase the amount of light. However, with the increase in power, the temperature when the LED is turned on also rises. For example, suppression of the temperature rise of the LED due to attachment of a heat sink or the like is an essential matter. In other words, the installation of the heat sink is one of the necessary conditions for practical use of LED lighting, but the above-mentioned conventional example does not allow any description regarding the heat sink, and is necessary and sufficient for general-purpose lighting. It is expected that the correct performance will not be obtained.

The present invention, as a specific means for solving the conventional problems described above, consists of a cylindrical member having excellent thermal conductivity, in a cross section perpendicular to the axial direction, the plane outside the center of the cylindrical member while the light source mounting portion to form a groove-shaped recess having, projecting the plate-like member radially at positions respectively is 45 ° to the vertical line passing through the center from the plane of the plate-like member the tip is formed with an arcuate member suitable MubeitaAtsu, the outer edge of said arcuate member, constitutes a part of the circumference of a circle with its center the center, and each of the arcuate member, the arcuate a heat sink formed as having an appropriate gap between the members to each other and the light source mounting portion, and at least one LED mounted via the wiring board to the light source mounting portion of said heat sink, said heat sink Above Consists of a holder for rotatably supported in mind, the previous SL sink and the case portion is mounted with appropriate clearance, and the power supply unit provided in the case portion, the via the holder from the feeding section The problem is solved by providing an illumination lamp characterized in that power is supplied to a wiring board.

  According to the present invention, with the heat sink attached to the LED, the light emission direction of the LED with respect to the outlet rail can be changed to a direction perpendicular to the outlet rail. Brightness equivalent to or better than the time can be obtained in the direction intended for irradiation, and it can be replaced with fluorescent lamps, reducing power consumption and simplifying maintenance by extending the service life It has an excellent effect on the above.

  Below, this invention is demonstrated in detail based on embodiment shown in a figure. What is shown by the code | symbol 1 in FIG. 1 is the lamp | ramp for illumination which concerns on this invention, and this lamp | ramp 1 for illumination is the housing | casing 2 to which the terminal 2a for attaching to an outlet rail is attached, and the said housing | casing 2 A pair of holders 3 attached to both ends of the holder 3 and a heat sink 4 attached to the engaging means 3a such as a bearing provided in the holder 3 so as to be rotatable.

2 and 3 show the heat sink 4. As shown in FIG. 2, the heat sink 4 is made of an extruded aluminum material or the like , is substantially rod-shaped , and its outer edge is a circumferential portion. It is formed so that it is formed and arbitrarily cut to length. The cross section has a shape as shown in FIG. Hereinafter, the shape of the heat sink will be described in detail with reference to FIG. In the description, the top, bottom, left, and right are referred to based on the illustrated state.

First, basically, the heat sink 4 of the present invention is in the form of a basic circular cylindrical shape, in its cross-section, the outer edge of the heat sink 4, one circumference D of a circle centered on the P Parts. First, the light source mounting portion 4a in which the LED 5 is to be disposed is formed as a groove-shaped concave portion having a wide and flat bottom surface from above the cylinder. At this time, the light source mounting portion 4a has an appropriate width narrower than the circumference D so that edges 4b having appropriate heights remain at both ends, and the bottom surface of the circumference D is the same as the circumference D. center has been admonished depth such reached P.

In addition, a pair of plate-like members 4c are formed below the circumference D along the length direction of the heat sink 4 so as to be 45 ° each with respect to a vertical line passing through the center P. . Then, the tip of each of the plate-like member 4c is arcuate member 4d which extend along the outer edge to the circumference D is accompanied.

  At this time, an appropriate gap 4f is provided between the arc-shaped members 4d attached to the tip of the plate-like member 4c and between the back surface 4e of the light source mounting portion 4a. Further, an appropriate number of, for example, a wiring board 6 on which a blue LED 5 is mounted is attached to the light source mounting portion 4a of the heat sink 4 as a predetermined position, and each LED 5 is covered with a phosphor-added resin 5a and then a transparent resin. It is supposed to be covered with a lens 5b or the like.

  A shaft mounting hole 4g having an appropriate diameter is provided at the center of the heat sink 4. For example, threading or the like is performed, and the engaging means 3a such as a rotating shaft is mounted from the holder 3 side. As described above, connection with the engaging means 3a of the holder 3 so as to be freely rotatable can be performed.

FIG. 4 shows the mutual positional relationship between the heat sink 4 to which the LED 5 is attached and the housing 2 as described above, and the upper surface 2b of the housing 2 is the circumference D of the heat sink 4. It is formed of a concave surface having a curvature that is appropriately larger than that, thereby enabling the heat sink 4 to freely rotate and providing a gap F with the housing 2 to cool the heat sink 4. It is designed to be further promoted.

  Further, the angle when the case 2 is viewed from the center P of the heat sink 4 is 90 ° or less, and the heat sink 4 is set to 90 ° with respect to the case 2 as shown in FIG. When the angle is set to any angle, the gap 4f provided between the arcuate members 4d and the back surface 4e of the light source mounting portion 4a directly faces the outside air. Further, the cooling of the heat sink 4 is promoted in one layer.

  As shown in FIG. 6, for example, if a current limiting resistor of the LED 5 is incorporated on the housing 2 side, for example, a heat source is dispersed, and the amount of heat given to the LED 5 is also reduced. It becomes. Moreover, when the voltage applied to the said outlet rail is AC100V, for example, you may mount an AC / DC converter.

  That is, in the present invention, since the lighting lamp 1 is attached to the outlet rail with the terminal 2a, for example, when a direct current is supplied to the outlet rail, the LED 5 having polarity is reversely connected. There is also a possibility of becoming. Therefore, a diode bridge may be used in place of the AC / DC converter.

  Here, in the final assembly of the lighting lamp 1 of the present invention, first, the holder 3 is attached to both ends of the housing 2 by an appropriate means such as screwing, and then the heat sink 4 is placed between the holders 3. If the screw 5 is screwed into the shaft mounting hole 4g provided in the heat sink 4 through the engaging means 3a of the holder 3 with a screw or the like while being held in a predetermined position, the heat sink 4 on which the LED 5 is mounted. Is rotatable with respect to the housing 2.

  Then, if the heat sink 4 is directed in a desired direction, the irradiation in the desired direction can be performed in the same manner as in the conventional example. First of all, the LED 5 is placed on the heat sink 4. By being mounted, the heat dissipation of the LED 5 is remarkably improved as compared with the conventional example, and the current value that can be passed increases even when the allowable temperature of the LED 5 is the same. Therefore, the illumination lamp 1 is much brighter than the conventional example, and the practicality is improved.

In the present invention, since the heat sink 4 has a circular circumference D, the light emitting position basically moves on an arc, and the light emitting portion is located at the box-like apex of the conventional example. Compared with certain types, the degree of occurrence of a step in each unit can be reduced. Therefore, even when it is required to illuminate a wide range in a direction orthogonal to the outlet rail, the viewer is unlikely to feel uncomfortable.

1 is a perspective view showing an illumination lamp according to the present invention. It is a perspective view which shows the heat sink in the lighting lamp which concerns on this invention. It is sectional drawing which follows the AA line of FIG. It is explanatory drawing which shows the mutual positional relationship of a heat sink and a housing | casing. It is explanatory drawing which shows a state when rotating a heat sink with respect to a housing | casing. It is sectional drawing which follows the BB line of FIG. It is a side view which shows a prior art example. It is a front view which shows a prior art example. It is explanatory drawing shown in the state which operated the prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Illuminating lamp 2 ... Housing | casing 2a ... Terminal 3 ... Holder 3a ... Engagement means 4 ... Heat sink 4a ... Light source attachment part 4b ... Edge part 4c ... Plate-like member 4d ... Arc-shaped member 4e ... Back surface of the light source attachment part 4f ... Gap 4g ... Shaft mounting hole 5 ... LED
5a ... Phosphor-added resin 5b ... Lens 6 ... Wiring board

Claims (2)

Made cylindrical member having excellent thermal conductivity, in a cross section perpendicular to the axial direction, with the light source mounting portion to form a groove-like recess having a flat outward from the center of the cylindrical member, from the plane wherein a position where each is 45 ° to the vertical line passing through the center projecting plate-like member radially, the distal end of the plate-like member is formed with an arcuate member suitable MubeitaAtsu, said arcuate member the outer edge of, and constitutes a part of the circumference of a circle with its center the center, and, as each arcuate member having an appropriate gap between the arcuate member and between said light source mounting portion a heat sink formed, and at least one LED mounted via the wiring board to the light source mounting portion of said heat sink, and a holder for supporting the heat sink rotatably at the center, the previous SL heatsink appropriate while And a case portion mounted is provided, consists of a power supply unit provided in the case portion, the illumination lamp, characterized in that it feeding is performed on the wiring substrate via the holder from the feeding section. Lighting lamp according to claim 1 Symbol mounting, characterized in that said heat sink is made of aluminum.

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