JP5344739B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture, and more particularly to a lighting device capable of changing an irradiation direction.

In recent years, lighting fixtures using light emitting diodes (LEDs) as light sources have attracted attention from the viewpoint of environmental considerations.
The feature of the LED is that the light has directivity in power saving and long life. Compared to conventional high-intensity discharge lamps (HID) such as high-pressure mercury lamps, metal halide lamps, and high-pressure sodium lamps, the amount of light is much lower. It has become a level that can be used for street lights and road lights.

It has been difficult to change the irradiation direction of street lamps and road lamps using conventional HID as a light source. This is because the light emitted from the entire lamp used as a light source is controlled using an optically designed reflector, and once the luminaire is installed, it is difficult to change the shape of the reflector. This is because it is difficult to control the light distribution of the instrument.
On the other hand, there are problems with light pollution caused by lighting fixtures, which often have adverse effects on housing, crops and fisheries.

For example, light damage after installation of street lights or road lights is dealt with by attaching a louver or a light-shielding plate on the appliance side in a direction in which light is not desired to be blown. This is a method of shielding the emitted light, and there is a problem that the light is wasted.
As described above, since the illumination direction of light cannot be changed in the conventional lighting fixtures, this problem has been addressed even when a louver or a light shielding plate is used to deteriorate the appearance or reduce the light efficiency.
On the other hand, in order to use an LED as a light source and level the illuminance distribution, a light projecting device for video photography provided with a light distribution changing operation means has been proposed (Patent Document 1).
JP 2004-241287 A

In the light projecting device, a plurality of groups of substrates on which a plurality of light emitting diodes are mounted are prepared as one group, and the substrates are tilted.
In this light projecting device, the irradiation direction is not changed, but in order to form a uniform illuminance distribution in a relatively small area, the light source of each group is inclined with respect to the normal line of the instrument. Even though the illuminance distribution in can be controlled, it was impossible to control the irradiation direction of the entire light projecting device.

In this way, the light irradiation direction cannot be changed against light pollution after installation of street lights and road lights, so this problem can be addressed even if the appearance deteriorates or the light efficiency is reduced by using louvers or light shielding plates. However, a lighting fixture that can change the irradiation direction has been desired.
For example, in a lighting fixture in which a light emitting unit is provided inside a housing to be fixed, it is necessary to adjust the optical axis depending on the illumination target, but it is difficult to adjust when the housing is positioned. .
The present invention has been made in view of the above circumstances, and an illuminator that can adjust the light irradiation direction by adjusting the optical axis even after installation without taking advantage of the characteristics of the LED and without impairing the light efficiency and appearance. The purpose is to provide.

Therefore, the lighting fixture of the present invention is a lighting fixture having a casing and a plurality of light emitting units provided in the casing, and includes a plurality of pivotable shaft portions mounted inside the casing. each of the shaft portion constitute a gear, each of the light emitting units, the optical axis for each of the shaft portion is attached to be inclined to form a predetermined angle, rotation of the gear Accordingly, it is characterized by being simultaneously rotated in the horizontal direction.
According to this configuration, the shaft portion is provided inside the housing and has a plurality of freely rotatable shaft portions, each of the shaft portions forms a gear, and each of the plurality of light emitting units has an optical axis of the shaft portion. Since they are attached to each of them and are rotated at the same time in the horizontal direction as the gear rotates, the irradiation direction of the light emitting unit can be easily adjusted without adjusting the housing.

  As described above, according to the present invention, the light-emitting unit is provided inside the housing and has a freely rotatable shaft part, and the light-emitting unit is attached with its optical axis inclined with respect to the shaft part. The light irradiation direction can be easily adjusted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 is a schematic diagram, FIG. 2 is a wide light distribution state of this column-mounted lighting device, FIG. 3 is a one-side light distribution state, and FIG. 4 is a front light distribution state LED light source unit. FIG. 5 is an overall view of the perspective view. FIG. 6 is a schematic diagram of the driving means for changing the optical axis used in this embodiment, FIG. 7 is a diagram showing the inside of the light emitting unit, and FIGS. 8 and 9 are steps for changing the optical axis of the slide fitting 42 and the positioning fitting 41. FIG. 10 to FIG. 12 are explanatory diagrams showing fluctuations of the optical axis of the light emitting unit.

  The column-equipped lighting fixture of the first embodiment is a lighting fixture having a casing 45 and a light emitting unit 40 (40a to 40d, 40s) provided in the casing 45, and is mounted inside the casing 45. The light emitting unit is composed of four groups of first to fourth light emitting unit groups 40a, 40b, 40c, and 40d, and a fixed light emitting unit 40s. The four light emitting unit groups, except for the fixed light emitting units, are inclined so that the optical axis C forms a predetermined angle with respect to the rotation shaft 42 as the shaft portion for each group, and the direction of the optical axis C is changed. It is characterized by being attached while keeping it aligned.

  That is, the optical axis C of the light emitting unit 40 is attached to be inclined with respect to the rotating shaft 42, and the irradiation direction can be easily changed by rotating the rotating shaft 42.

FIG. 6 shows a schematic diagram of this driving means. Here, one unit includes a light emitting unit 40, a gear, and a rotating shaft. Here, as shown in FIGS. 8 and 9, three sets of light emitting units 40 are assembled with one slide fitting 42A . The slide fitting 42A is provided with a knob so that it can be easily adjusted.
And the positioning metal fitting 41 is attached.

Finally, the gear 43 rotates by sliding the slide fitting 42A, and the light emitting unit groups 40a, 40b, 40c, and 40d of each group are shown in FIGS. 8 (a) to (c) and FIGS. 9 (a) to (a). As shown in c), the optical axis C rotates and the light distribution can be changed. In other words, the light emitting unit includes a gear having the same initial position for each group and a slide fitting attached to each gear, and the light emitting unit has the same optical axis direction. It is configured so that it can be rotated as it is.
According to this configuration, the optical axis is rotated by rotating the light emitting unit so that the gear rotates by the sliding of the slide fitting and has a desired posture angle.
8A to 8C show the light emitting unit 40 in which the direction of the optical axis C sequentially changes according to the slide distance. Here, FIGS. 8A to 8C correspond to FIGS. 9A to 9C, respectively.

The posture of the light emitting unit 40 in which the direction of the optical axis C is adjusted in this way is shown in FIGS. 10 to 12, (a) is a plan view seen from the gear side, and (b) is a side view of the light emitting unit seen from a direction parallel to the rotation axis of the gear 43. As apparent from these drawings, the slide fitting 42A is moved by a predetermined distance by setting the positioning fitting 41, and the gears are rotated according to this movement distance, so that the optical axis C of each light emitting unit group is interlocked. And move.

  By changing the direction of the optical axis C, the light emission direction of the light source of the illuminating fixture with a column is changed. For example, among the four light emitting unit groups 40a, 40b, 40c, and 40d, the light emitting diodes of the inner two second and third light emitting unit groups 40b and 40c change in the optical axis direction, and the other light emitting unit groups emit light. The diode has a fixed optical axis.

  When it is desired to obtain a wide light distribution state, as shown in FIG. 2, the optical axis directions, that is, the emission directions of the second and third light emitting unit groups 40b and 40c are set to A and B, respectively. obtain.

  In addition, when it is desired to set the light distribution state on one side, as shown in FIG. 3, the emission direction of the second light emitting unit group 40b is A ′ facing inward, and the emission direction of the third light emitting unit group 40c is a wide light distribution. As in the case of B, a one-sided light distribution state is obtained by keeping B.

  Further, when it is desired to set the front light distribution state, as shown in FIG. 4, the emission direction of the second light emitting unit group 40b is set to A 'inward as in the case of the one-side light distribution, and the third light emitting unit. Similar to the wide light distribution, the emission direction of the group 40c is set to B ′ toward the inside, thereby obtaining a front light distribution state.

  FIG. 5 shows a streetlight 1 according to a lighting apparatus with a pillar of the present invention, and this streetlight 1 includes a pillar part 2 and a lamp part 3, and the lamp part 3 is an LED light source part. 4 and a reflecting plate portion 5 having a reflecting surface that projects in a conical shape from the LED light source portion toward the column portion.

  As shown in FIG. 5, the streetlight 1 includes an inspection port 11, a cable protection tube 12, a base plate 13, and anchor bolts 14. The anchor bolts 14 are embedded in a concrete foundation 15. It is something to be made. The inspection port 11 is for inspecting a connection portion between a power cable from the ground and a lead wire 405 for illumination described later, and a lid is fixed to the support column portion 2 with a screw.

  Moreover, although the streetlight 1 of this Embodiment is installed by the baseplate system, the embedding system which embeds the lower part of the support | pillar part 2 in the concrete foundation 15 may be sufficient. In the figure, reference numeral 16 denotes a power supply hole.

  The support portion 2 is provided with the above-described cable protection tube 12, and a power cable in the cable protection tube 12 is connected to an LED light source portion 4 described later of the lamp body portion 3. In addition, in the support | pillar part 2 of this Embodiment, the total height (H) including the lamp | ramp part 3 is X1m from the ground, and the height (h) of the lamp | ramp part 3 mentioned later can be reduced considerably. Therefore, although the height dimension can be considerably reduced as compared with the conventional case, it is not particularly limited to this length.

  The lamp unit 3 is provided on the upper portion of the support column 2 and irradiates light to an irradiated range such as on the road surface with the lower end portion as a substantial center. As shown in FIG. 5, the lamp body 3 is installed between the LED light source unit 4, the reflecting plate unit 5 projecting in a weight shape toward the column unit 2, and the column unit 2 and the outer shell 7. The translucent cover 6 is provided.

  As shown in FIGS. 2 to 4, the LED light source unit 4 is formed by arranging 13 light emitting units 40 a to 40 d and 40 s to realize illumination in a desired direction.

  As shown in FIG. 7, the light emitting unit 40 constituting the LED light source unit 4 includes an LED substrate 401, an LED 402 mounted on the LED substrate 401, a power supply unit 403 that supplies power to the LED 402, and a housing 404 that houses them. A unit 40 a and a lens 40 b attached to an opening which is a light output portion of the housing 404 are provided.

  The LED substrate 401 is for mounting the LED 402, and in this embodiment, a glass epoxy resin is mainly used as a material, and a diode, a capacitor, a resistor, and the like are mounted on the back surface of the substrate. .

  The power supply unit 403 is connected to an AC 100V commercial power supply via a lead wire 405.

  The lens 40b is for controlling the light distribution of the LED 402, and for example, an acrylic resin (transparent) is used as the material. The lens 40b of the present embodiment controls the desired orientation distribution by converging the light transmitted from the LED 402 at a wide angle, particularly the light transmitted near the optical axis, that is, near the center.

  As shown in FIG. 5, the reflecting plate portion 5 has a reflecting surface that projects in a conical shape (for example, a conical shape or a hexagonal pyramid shape) toward the column portion 2 below the LED light source portion 4. Since the reflecting surface can direct the direction of light emitted from the light emitting unit 40 to the support column 2 as much as possible, it is possible to prevent glare from a person located around the support column 2.

  The translucent cover 6 protects internal components such as the LED light source unit 4 and the reflection plate unit 5, stops rainwater, and transmits light from the LED light source unit 4. In the present embodiment, A transparent acrylic resin is used as the material. In particular, the translucent cover 6 of the present embodiment uses an acrylic resin containing an ultraviolet absorber in order to prevent the transparent acrylic from being yellowed when it is used outdoors and from being yellowed.

Next, the light emitting unit driving means including the change of the optical axis of the light emitting unit will be described. Here the driving means for changing the optical axis C, as shown a schematic top view in FIG. 8, by setting the alignment ferrule 41 to slide bracket 42A, slide the slide bracket 42A to a desired position, the gear 43 is rotated. As the gear rotates, the light axes of the light emitting units mounted in parallel change the optical axis of each light emitting unit while maintaining the same posture angle. The schematic top view of FIG. 8 corresponds to the front view of FIG. 9, and the optical axis is sequentially changed as shown in FIGS. 8 (a) to 8 (c). At this time, the side views of FIGS. 8A to 8C correspond to FIGS. 8A to 8C, respectively.

Thus, by sliding the slide fitting 42A , the gear 43 rotates, and the light emitting unit groups 40a, 40b, 40c, and 40d of each group are shown in FIGS. 8 (a) to 8 (c) and FIG. 9 (a). As shown in (c) to (c), the optical axis C rotates and the light distribution can be changed. 8A to 8C show the light emitting unit 40 in which the direction of the optical axis C sequentially changes according to the slide distance. Here, FIGS. 8A to 8C correspond to FIGS. 9A to 9C, respectively.

On the other hand, FIGS. 10A and 10B are a plan view seen from the gear side and a light emitting unit seen from the direction parallel to the rotation axis of the gear 43 in the states of FIGS. 8A and 9A. Corresponds to the side view. O indicates the rotational direction of the gear.
On the other hand, FIGS. 11A and 11B are a plan view seen from the gear side and a light emitting unit seen from the direction parallel to the rotation axis of the gear 43 in the states of FIGS. 8B and 9B. Corresponds to the side view.
On the other hand, FIGS. 12A and 12B are a plan view seen from the gear side and a light emitting unit seen from the direction parallel to the rotation axis of the gear 43 in the states of FIGS. 8C and 9C. Corresponds to the side view.
In this way, by setting the positioning fitting 41, the slide fitting 42A moves by a predetermined distance, and the gear rotates according to the movement distance, so that the optical axis C of each light emitting unit group moves in conjunction with each other, As shown in FIG. 2-4, it is possible to adjust light distribution such as wide light distribution, one-side light distribution, and front light distribution.

  Thus, when the direction of the optical axis C changes, the light emission direction of the light source of this lighting apparatus with a support | pillar changes. For example, among the four light emitting unit groups 40a, 40b, 40c, and 40d, the light emitting diodes of the inner two second and third light emitting unit groups 40b and 40c change in the optical axis direction, and the other light emitting unit groups emit light. The diode is fixed to the optical axis.

  As described above, according to the lighting apparatus of the present embodiment, the light fixture has a shaft portion that is provided inside the housing and is freely rotatable, and the light emitting unit is attached with the optical axis inclined with respect to the shaft portion. Therefore, the light irradiation direction can be easily adjusted even after installation.

In the embodiment described above, a plurality of light emitting units are grouped for each region, and the light axis is aligned and linked as a light emitting unit group for each light emitting unit group. However, the region has a peripheral portion, an intermediate portion, and a central portion. As described above, the light emitting units may be divided into concentric circles, and the adjacent light emitting units do not necessarily have to be in the same group, but may be picked up in a dot shape to become the same group.
Moreover, you may make it rotate an optical axis independently for each light emitting unit.
The means for changing the direction of the optical axis is not limited to the above embodiment and can be selected as appropriate.

  As described above, according to the present invention, the light irradiation direction can be easily adjusted, and therefore, it is possible to eliminate wasteful energy consumption even in a street light, a road light, etc. Can be realized.

Main part schematic diagram of the lighting fixture with support | pillar of embodiment of this invention The perspective view which shows the LED light source part of the wide light distribution state of this lighting fixture with a support | pillar The perspective view which shows the LED light source part of the one-side light distribution state of this lighting fixture with a support | pillar The perspective view which shows the LED light source part of the front light distribution state of this lighting fixture with a support | pillar Whole view of lighting fixture with support of Embodiment 1 of the present invention Schematic of the drive means which performs rotation drive of the optical axis of the light emission unit in the lighting fixture with a support | pillar of Embodiment 1 of this invention Cross-sectional explanatory drawing of the light emitting unit Explanatory drawing which shows the drive means of the light emitting unit and the rotational drive of the optical axis Explanatory drawing which shows the drive means of the light emitting unit and the rotational drive of the optical axis The figure which shows the attitude | position change of the light emission unit by which the direction of the optical axis of the light emission unit is adjusted, (a) is a top view seen from the gear side, (b) is light emission seen from the direction parallel to the rotating shaft of the gear 43 Side view of unit The figure which shows the attitude | position change of the light emission unit by which the direction of the optical axis of the light emission unit is adjusted, (a) is a top view seen from the gear side, (b) is light emission seen from the direction parallel to the rotating shaft of the gear 43 Side view of unit The figure which shows the attitude | position change of the light emission unit by which the direction of the optical axis of the light emission unit is adjusted, (a) is a top view seen from the gear side, (b) is light emission seen from the direction parallel to the rotating shaft of the gear 43 Side view of unit

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Street lamp 2 Support | pillar part 3 Lamp body part 4 LED light source part 5 Reflector part 40a, 40b, 40c, 40d Light emission unit group C Optical axis

Claims (1)

A lighting fixture having a housing and a plurality of light emitting units provided in the housing,
Comprising a plurality of pivotable shafts mounted inside the housing;
Each of the shaft portions constitutes a gear,
Each of the light emitting units is attached so as to incline so that the optical axis forms a predetermined angle with respect to each of the shaft portions, and the lighting device rotates in the horizontal direction simultaneously with the rotation of the gear. .

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