JP2009129758A - Lighting apparatus with pole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting apparatus with a pole in which exchange work of a light source at a high place can be almost eliminated and power consumption can be greatly reduced, and further, a required brightness can be secured while preventing dazzle effectively. <P>SOLUTION: A street light has a pole part and a lamp part 3 which is installed on one end of the pole part and irradiates light in an irradiating range with the other end as nearly the center. The lamp part 3 is provided with an LED light source part 4 and a reflecting plate part 5 which has a reflection face 51 that protrudes in circular cone shape (or hexagonal pyramid shape) toward the pole part from the LED light source part 4. The angle θ2 made by an optical axis D of the LED light source part 4 with the pole part is smaller than the angle θ1 which the reflection face 51 makes with the pole part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a column-equipped lighting fixture suitable for use as, for example, a street lamp or a garden lamp.

  Recently, various lighting fixtures using LEDs as light sources have been proposed and developed. The LED used in such an LED lighting device is generally difficult to be darker than a fluorescent lamp, but recently, an LED having a brightness equivalent to that of a fluorescent lamp has been developed.

However, in such a lighting fixture using an LED as a light source, the luminance of the light source is high, so that depending on the irradiation direction, it may enter the eyes and feel discomfort such as glare. Therefore, an LED lighting device (for example, see Patent Document 1) that improves this has been proposed.
JP 2006-302538 A

  Incidentally, street lamps installed in outdoor parks or along roads generally use a discharge lamp such as a fluorescent lamp as a light source, and some discharge lamps may use a mercury lamp or the like. However, this discharge lamp has higher luminous efficiency and longer life than incandescent bulbs, but needs to be replaced every limited use time. In addition, although it consumes less power than the incandescent bulb and has a power saving effect, it is inferior in terms of life and power consumption compared to, for example, an LED.

  Therefore, in order to make it possible to eliminate dangerous replacement work of a light source installed at a high place for a long period of time and to keep power consumption low, a light source such as a streetlight that uses the above-described LED has been developed. It is being considered.

  However, in the LED as the light source, the luminance increases when it is attempted to ensure the same brightness as that of a fluorescent lamp or the like often used for street lamps. Therefore, if the light from this LED is directly inserted into the eyes of a nearby pedestrian or the like, there is a risk of discomfort such as strong glare, and at the same time ensuring the required brightness (illuminance), strong glare How to suppress (glare) is a major issue in putting it to practical use.

  For example, as shown in FIG. 7, among the light beams emitted from the outer bulb 102 a of the discharge lamp 102 in the lamp body portion 101 installed at the upper portion of the column portion (not shown) of the street lamp 100, for example, light beams L 1 and L 2. , L3 is light distribution controlled by the reflecting plate 103, so that the glare can be controlled to some extent. In the figure, reference numeral 102b denotes an arc tube, and 104 denotes a reflector.

  However, since the light beam L4 goes directly out of the lamp body 101 without being reflected by the reflecting mirror 103, the light distribution cannot be controlled, and there is a possibility that it is directly inserted into the human eye. The discharge lamp 102 has an elongated shape having a rod shape. However, since the longitudinal direction of the discharge lamp 102 is arranged substantially parallel to the axis L direction (height direction) of the support column, The height dimension is increasing.

  The present invention has been made in view of the above circumstances, and it is almost unnecessary to replace the light source at a high place, can greatly reduce power consumption, and can secure required brightness. At the same time, an object of the present invention is to provide a column-equipped lighting device that can effectively prevent glare.

The column-equipped lighting fixture of the present invention includes a column unit, and a lamp unit that is provided at one end of the column unit and irradiates light to an irradiation range that is substantially centered on the other end. The lighting unit includes: an LED light source unit; and a reflective plate unit having a reflective surface that projects from the LED light source unit toward the support column in a conical shape. The angle formed by the optical axis of the portion with the support column is smaller than the angle formed by the reflective surface with the support column.
With this configuration, since the LED is used as the light source, the replacement work of the light source at a high place can be almost eliminated and the power consumption can be greatly reduced, and the required brightness can be secured. At the same time, it is possible to effectively prevent the dazzling of people around the column.

The LED light source unit includes a lid-shaped outer shell that opens toward the support column, and an LED light source accommodated in the outer shell.
With this configuration, the LED light source has a point light source shape as compared to a long discharge lamp, so the height of the outer shell (the length with respect to the axial direction (height direction) of the support column) can be shortened. The height of the streetlight can be reduced. Moreover, since the material cost of a member can be reduced, it is effective for reduction of manufacturing cost and resource saving.

The LED light source unit includes a plurality of LED light sources, and each of the LED light sources has an optical axis formed radially around the other end of the support column.
With this configuration, it is possible to achieve uniform light irradiation around the surroundings without increasing the height of the columns.

The reflection surface is a reflection surface having a diffusion function.
With this configuration, glare due to reflected light from the reflecting plate portion can be suppressed. In addition, since the light becomes soft and the directions of reflected light are multidirectional, it is possible to use the lighting fixture with support in a line shape so that it can be used as induction lighting.

The reflecting plate portion includes a phosphorescent member.
With this configuration, a constant lighting environment can be provided even during a power failure, which contributes to energy saving.

  According to the present invention, it is possible to substantially eliminate the replacement work of the light source at a high place, to greatly reduce the power consumption, to further ensure the required brightness and to effectively reduce the glare. It is possible to provide a lighting apparatus with a support that can be prevented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a streetlight 1 according to a lighting apparatus with a pillar of the present invention. The streetlight 1 includes a pillar part 2 and a lamp body part 3, and as shown in FIG. The unit 3 includes an LED light source unit 4 and a reflecting plate unit 5 having a reflective surface that protrudes in a conical shape from the LED light source unit toward the column unit. The optical axis of the LED light source unit 4 is the column unit 2. The angle θ2 formed is smaller than the angle θ1 formed by the reflection surface 51 and the support column 2 (θ2 <θ1).

  As shown in FIG. 1, 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 425 for illumination to be described later, and a lid is fixed to the column portion 2 with a screw.

  Moreover, although the streetlight 1 of this Embodiment is installed by the baseplate system, as shown in FIG. 6, 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) also including the lamp | ramp part 3 is X1 = 2m from the ground, and the height (h) of the lamp | ramp part 3 mentioned later is considerable. Since the height can be reduced, the height can be considerably reduced as compared with the conventional case, but the length is not particularly limited.

  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. 2A, the lamp body portion 3 includes an LED light source portion 4, a reflecting plate portion 5 projecting in a weight shape toward the column portion 2, and a space between the column portion 2 and the outer shell 7. A translucent cover 6 installed at the top of the lamp body 3 and a substantially lid-shaped outer shell 7 which is at the top of the lamp body 3 and is opened toward the support column 2. In addition, in the lamp | ramp part 3 of this Embodiment, it forms so that height (h) may be set to about X2 = 30cm, and it can suppress the dimension of a height direction significantly compared with the former. It has become. Moreover, the outer diameter (W) of the lamp body 3 of the present embodiment is X3 = 18 cm.

  As shown in FIGS. 2A and 2B, the LED light source section 4 includes a lid body 41 that is opened toward the support section 2 and an LED light source 42 that is fixed to the lower surface of the lid body 41. Have. Six LED light sources 42 are radially arranged equiangularly on the cover body 41 of the present embodiment, and illumination with substantially uniform illumination intensity can be realized over almost 360 degrees.

  As shown in FIG. 3, the LED light source 42 includes an LED substrate 421, an LED 422 mounted on the LED substrate 421, a power supply unit 423 that supplies power to the LED 422, and an LED light emitting unit 42 a that includes a housing 424 that houses them, and the housing 424. The lens 42b attached to the opening which is the light emission part.

  The LED substrate 421 is for mounting the LED 422. 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 423 is connected to a commercial power supply of AC 100V through a lead wire 425.

  The LED light emitting unit 42a of the present embodiment uses a light distribution controlled to a medium angle light distribution or a narrow angle light distribution (see the shaded portion in FIG. 2) by a lens 42b on the front surface of the LED 422. In the embodiment, a medium beam distribution with a half beam angle (α) of α: 38 ° or more and less than 54 ° is used.

  The lens 42b is for controlling the light distribution of the LED 422, and for example, an acrylic resin (transparent) is used as the material. The lens 424 of the present embodiment controls the light distribution to be desired by converging light transmitted from the LED 422 at a wide angle, particularly in the vicinity of the optical axis, that is, near the center.

  As shown in FIG. 2A, the reflecting plate portion 5 projects in a conical shape (for example, a conical shape or a hexagonal pyramid shape) toward the column portion 2 (see FIG. 1) below the LED light source portion 4. The angle θ1 formed by the reflection surface 51 and the central axis C of the support column 2 is larger than the angle θ2 formed by the optical axis D of the light source unit 4 and the center axis C of the support column 2. In other words, the angle θ2 is configured to be smaller than the angle θ1, and the direction of the optical axis D of the light source 42 can be directed to the support column 2 as much as possible. Can prevent glare from being applied.

  In addition, the reflector part 5 of this Embodiment has a spreading | diffusion function, and diffusing reflected light by forming fine unevenness | corrugation in detail on the surface, for example, diffusion by sandblasting or painting. A surface is formed. Moreover, in the reflector part 5 of this Embodiment, the aluminum material is drawn and anodized. In this way, by performing the alumite process while avoiding the mirror finish, glare in a specific direction can be avoided.

Furthermore, the reflector 5 of the present invention includes a phosphorescent member, and when light energy from sunlight or illumination light is applied, the energy is temporarily stored inside the atom as phosphorescence or fluorescence, and the surroundings are When it gets dark, the stored light energy is gradually emitted to emit light. This light storage member absorbs and accumulates as many times as light is applied, and repeats light emission. In this embodiment, ZnSCu is used as the main component, and the body color is light yellowish and emits green light. The phosphorescent member is not particularly limited to this, and is a long afterglow phosphor having the same effect, for example, Sr ₂ MgSi ₂ 0 ₇ as the main component (for example, divalent as a luminescent ion). Eu, trivalent Dy or Nd co-doped as trap ions, etc.).

  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.

  Therefore, according to the present embodiment, in FIG. 3, the LED light emitting unit 42 is controlled to have a medium angle light distribution or a narrow angle light distribution (see the hatched portion in FIG. 2) by the lens 42b immediately below the LED 422. I use it. In particular, in FIG. 4, the LED light emitting unit 42 of the present embodiment has a point where the horizontal illuminance on one horizontal plane becomes ½ of the illuminance directly below the light source in the light distribution when the optical axis D is vertical. The angle between the direction line β connecting the center of the light source (LED) and the optical axis D direction, that is, the ½ illuminance angle (α / 2) is half of the ½ beam angle (α). In this embodiment, α / 2 of less than 27 ° is used.

  Thereby, the approximate irradiation range of the illumination light emitted from the six LED light sources 42 and indicated by hatching in FIG. 1 is θ1 + at the maximum angle with respect to the central axis C that penetrates the center of the support column 2 vertically. (Α / 2). Here, since the direction of the optical axis D of the light source 42 is directed as much as possible in the direction of the central axis C of the support column 2, it is effective to give glare to people located around the support column 2. Can be prevented.

  Furthermore, according to the present embodiment, the reflector 5 is provided with a phosphorescent member, and even if power supply from a commercial power source is stopped due to a power failure or the like, sunlight or light from illumination by this LED Energy is temporarily stored. For this reason, when a power failure occurs when the surroundings are dark, the stored light energy can be gradually emitted from the reflecting plate portion 5 to emit light, as indicated by hatching in FIG.

  Therefore, for example, as shown in FIG. 7, the streetlight 1 may be appropriately installed at a predetermined distance interval at which a necessary minimum illuminance can be obtained by light emission from the reflecting plate part 5 at night when the surroundings are dark. For example, people can be guided to a safe place when a power failure occurs during a disaster. That is, even when a disaster such as an earthquake at night occurs and a power failure occurs, it is possible to guide the evacuation to a safe place by relying on the light emitted from each street light 1.

In the embodiment described above, the LED light source unit has a plurality of LEDs arranged in a concentric circle with a radial optical axis and centering on the support column. However, one LED rotates around the support column as the center axis. May be.
Moreover, the lighting fixture with support | pillar of this invention is not limited to embodiment mentioned above at all, In the range which does not deviate from the summary, it can implement with a various form.

  A column-equipped lighting fixture according to the present invention includes a column and a lamp unit that is provided at one end of the column and irradiates light to an irradiation range that is substantially centered on the other end. The lighting unit includes: an LED light source unit; and a reflecting plate unit having a reflecting surface that projects from the LED light source unit toward the support column in a conical shape, and the optical axis of the LED light source unit The angle formed by the column part is smaller than the angle formed by the reflective surface and the column part, and since the LED is used as the light source, the replacement work of the light source at a high place can be almost eliminated and consumed. Not only can the power be reduced significantly, it has the effect of ensuring the required brightness and effectively preventing glare, and is useful for outdoor street lights and garden lights. is there.

Schematic configuration diagram showing a streetlight according to an embodiment of the present invention BRIEF DESCRIPTION OF THE DRAWINGS It shows the lamp body part which is the principal part of the streetlight according to the embodiment of the present invention, (a) is a half cross-sectional view, (b) is the bottom surface when the lid of the LED light source part is viewed from below. Partially broken view showing condition Sectional drawing which shows the structure of the LED light source of the lamp | ramp part which concerns on embodiment of this invention Explanatory diagram showing 1/2 beam angle and 1/2 illumination angle Explanatory drawing which shows the light emission state by the phosphorescent member of the streetlight which concerns on embodiment of this invention Main part explanatory drawing which shows the modification of the installation method of the lighting fixture with a support | pillar of embodiment of this invention Explanatory drawing which shows the state which installed the streetlight which concerns on embodiment of this invention at equal intervals for night guidance etc. Main part configuration diagram showing a conventional street lamp

Explanation of symbols

1 Streetlight (lighting fixture with support)
2 support part 3 lamp body part 4 LED light source part 41 lid body 42 LED light source 42a LED light emitting unit 42b lens 421 LED substrate 422 LED
423 Power supply unit 424 Housing 5 Reflector (light storage member)
51 Reflecting surface 6 Translucent cover 7 Outline C Center axis (of the support column) D Optical axis of the light source unit α 1/2 Beam angle α / 2 1/2 Illuminance angle θ1, θ2 angle

Claims (5)

A strut illuminating device having a strut portion and a lamp body portion that is provided at one end portion of the strut portion and irradiates light to an irradiated range having the other end portion as a substantially center,
The lamp body part includes an LED light source part, and a reflection plate part having a reflective surface that projects from the LED light source part toward the support column in a conical shape,
The lighting fixture with a column, wherein an angle formed by the optical axis of the LED light source unit and the column unit is smaller than an angle formed by the reflective surface and the column unit. It is a lighting fixture with a support | pillar of Claim 1, Comprising:
The said LED light source part is a lighting fixture with a support | pillar which has the lid-shaped outer shape opened toward a support | pillar part, and the LED light source accommodated in the inside of an outer casing. The lighting fixture with support according to claim 1 or 2,
The LED light source unit includes a plurality of LED light sources,
Each of the LED light sources is a column-equipped luminaire having optical axes formed radially around the other end of the column. It is a lighting fixture with a support | pillar in any one of Claims 1 thru | or 3,
The said reflective surface is a lighting fixture with a support | pillar which is a reflective surface which has a spreading | diffusion function. It is a lighting fixture with a support | pillar in any one of Claims 1 thru | or 4,
The reflector plate is a column-equipped lighting fixture provided with a phosphorescent member.

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