JP5473055B2 - lighting equipment - Google Patents

Description

  The present invention relates to a luminaire that illuminates roads and parks such as street lamps.

  Conventionally, the lighting fixture which attached the instrument main body to the edge part of a support | pillar (mounting pole) has already been proposed (for example, refer patent document 1).

JP 2008-027783 A (FIG. 1, claim 1)

  Usually, in a lighting fixture installed outdoors such as a street light, the internal temperature of the fixture main body rises and the pressure increases by driving electric components in the fixture main body. And the internal temperature of an instrument main body falls by the drive of an electrical component being stopped. At that time, as the internal pressure of the instrument body decreases, external air is introduced into the instrument body so that moisture such as water droplets adhering to the drain hole is not sucked into the instrument body. An air hole is provided for performing the above.

However, in the conventional lighting device disclosed in Patent Document 1, if the air hole has a large opening area, flying insects such as insects may enter the device body from the air hole.
Therefore, it is difficult to realize maintenance-free because a cleaning operation for removing the flying pest that has entered is necessary.

Further, in the conventional lighting device disclosed in Patent Document 1, if the drainage hole is blocked by moisture and the internal pressure of the device main body is significantly different from the atmosphere, the external illumination through the air hole Inhales moisture.
Therefore, there is a risk that moisture will actively enter the inside of the instrument body, which may cause problems with the internal electrical components and cause condensation inside the instrument body.

  The present invention has been made to solve the above-described problems, and its purpose is to be maintenance-free and to maintain internal electrical components and suppress the occurrence of condensation inside the instrument body. It is in providing the lighting fixture which can be.

A lighting fixture according to the present invention has a light source, a fixture main body, and a tapered outer shape that tapers downward, and is a lamp that houses the light source between the fixture main body by being attached to the fixture main body. A cover that forms a chamber, a drain hole for discharging moisture in the lamp chamber , which is formed at the lowest position of the top of the cover, and above the drain hole of the cover and a, and, at a position close to the upper end portion of the cover, is protruded I inside the upward direction of the front Symbol cover, a cylindrical portion is the lower end, the open end of the slope along the surface of the cover, An air hole provided in an upper surface portion of the tube portion for communicating the inside of the lamp chamber with outside air, and in the tube portion, a bus line that is a straight line that forms the shape of the inner wall surface of the tube portion The lowest of the open end of the slope of the cylinder part The bus corresponding to the point is the maximum bus, the bus corresponding to the highest point of the open end of the slope of the tube portion is the minimum bus, and passes through the center of the upper surface portion of the tube portion and is perpendicular to the surface of the upper surface portion. When the perpendicular is the axis of the cylinder part, the air hole is located on the minimum bus side with respect to the axis of the cylinder part .

In the present invention, the air hole is provided in the upper surface portion that covers the upper end portion of the cylindrical portion that extends upward from the surface of the cover to the inside of the cover.
Thereby, since the air hole is disposed at a position recessed from the surface of the cover, it is difficult for flying insects such as insects to enter.
Therefore, maintenance-free can be realized by preventing the invasion of flying pests.

In the present invention, the air hole is disposed at a position recessed from the surface of the cover toward the upper part inside the cover.
As a result, moisture does not adhere to the air holes, so that even if the drain hole is blocked by moisture, moisture is not sucked through the air holes.
Therefore, since moisture does not enter the interior of the lamp chamber, it is possible to maintain internal electrical components and suppress the occurrence of dew condensation in the lamp chamber.
Further, in the present invention, the air hole is formed so that the cylindrical portion is formed downward from the surface of the cover that is formed in a tapered shape toward the lower side. It arrange | positions at the minimum bus-line side which opposes the largest bus-line among bus-bars.
Thereby, the water | moisture content applied to the surface of the cover adheres to the largest bus-bar side, and does not adhere to the minimum bus-bar.
Therefore, the air hole can be reliably prevented from entering by disposing the air hole at a position away from the moisture on the surface of the cover.

The luminaire according to the present invention is characterized in that a length of a straight line connecting the highest point and the lowest point of the open end of the slope in the cylindrical portion is larger than 6 mm .

According to the lighting fixture of the present invention, the air hole is provided in the upper surface portion that covers the upper end portion of the cylindrical portion that extends upward from the surface of the cover to the inside of the cover.
As a result, there is an effect that maintenance-free operation can be achieved, and internal electrical components can be maintained and the occurrence of dew condensation inside the instrument body can be suppressed.

The partially broken side view of the lighting fixture of one Embodiment which concerns on this invention The top view of the cover in the lighting fixture of FIG. FIG. 2 is a partially broken enlarged view of the cover of FIG. The partially broken left view of the cover in the lighting fixture of FIG. 4 is a partially broken enlarged view of the cover of FIG.

  Hereinafter, the lighting fixture which concerns on one Embodiment of this invention is demonstrated with reference to drawings.

  A lighting fixture 10 according to an embodiment of the present invention includes a fixture main body 11, an LED unit 12 that is a light source, a power supply unit 13, and a cover 14 in which a drain hole 15 and a pair of air holes 16 are formed. .

  As shown in FIG. 1, the instrument body 11 has a substantially triangular pyramid outer shape having a predetermined thickness dimension with a convex shape upward by dividing the quadrangular pyramid into two equal parts using a metal material such as die casting. Is formed.

  The instrument body 11 includes a bracket 17 on its rear surface. The bracket 17 is screwed to a not-illustrated column or housing.

  The instrument main body 11 has a power supply unit 13 attached to the inside thereof. One of the power supply units 13 is electrically connected to an external power supply (not shown), and the other is electrically connected to the LED unit 12.

  The LED unit 12 is attached below the power supply unit 13. The LED unit 12 has a plurality of LEDs 18 arranged in a plurality of rows on a reflecting plate 19 formed in a V shape. The LED 18 may be a predetermined single color or a combination of a plurality of colors. Various lamps may be applied instead of the LED unit 12 as the light source.

  The cover 14 has a substantially triangular pyramid outer shape having a predetermined thickness dimension, for example, which is tapered downward using a transparent resin material, for example, by dividing the quadrangular pyramid into two equal parts on the diagonal. Is formed. The cover 14 has a flange 20 at the upper end opening.

  The cover 14 covers the LED unit 12, and the flange 20 is screwed to the flange 21 provided at the lower end opening of the instrument body 11 to form a space-like lamp chamber 22 between the cover 14 and the instrument body 11. ing. The lamp chamber 22 accommodates the power supply unit 13 and the LED unit 12.

  The drain hole 15 is formed at the lowermost position at the top of the triangular pyramid of the cover 14.

  As shown in FIG. 2, five drain holes 15 are arranged in a line with a predetermined length, for example, a width dimension L1 of 0.3 mm. The drain holes 15 may be arranged in a plurality of rows instead of the five rows. The drain hole 15 is not limited to being formed at the lowermost part of the cover 14, but a plurality of drain holes 15 may be formed at appropriate positions.

The drainage hole 15 has a width L1 that is smaller than the outer shape of the flying pest.
As a result, it is possible to prevent the flying insects from entering the lamp chamber 22 from the drain hole 15.

  The cover 14 has air holes 16 formed at symmetrical positions around the drain hole 15. The air hole 16 is located above the drain hole 15.

  As shown in FIG. 3, the air holes 16 are formed in a slit shape in the upper surface portion 24 that covers the upper end portion of the cylindrical portion 23 that extends from the surface of the cover 14 to the upper side inside the cover 14. The air holes 16 are rectangular through holes having a width dimension L2 of 0.3 mm and a length dimension L3 of 3 mm, for example.

  As shown in FIG. 4, the air hole 16 has the axis B of the cylindrical portion 23 disposed at a position of a length dimension L5 shorter than a length dimension L4 from the center line A to the end of the cover 14.

  As shown in FIG. 5, the cylindrical portion 23 is formed so as to protrude in a polygonal cylindrical shape from the surface of the cover 14 toward the upper portion inside the cover 14. At this time, since the cover 14 is formed in a tapered shape downward, the cylindrical portion 23 has the maximum bus-side plate portion 25 disposed on the maximum bus C side of the axis B which is the center side of the cover 14, The minimum bus side plate portion 26 is disposed on the minimum bus D side of the axis B which is the outer side of 14. The cylindrical portion 23 may be formed in a cylindrical shape instead of a hexagonal or octagonal polygon.

As for the cylinder part 23, the opening part 27 currently formed in the surface side of the cover 14 is formed in the opening dimension L6 of 8 mm, for example. The length dimension L6 of the opening 27 of the cylindrical portion 23 is sufficiently larger than 6 mm where moisture easily adheres. In other words, the cross-sectional area of the opening 27 is large enough not to allow moisture to adhere.
Thereby, the cylinder portion 23 is unlikely to have moisture adhering to the opening portion 27.

  The cylindrical portion 23 has an inner diameter dimension D1 at its lower end and an inner diameter dimension D2 whose upper end is slightly smaller than the lower end, and has a height dimension L7. The inner diameter dimensions D1 and D2 are such that moisture hardly adheres thereto.

  The upper surface part 24 is horizontally connected to the upper end part of the cylinder part 23. The air holes 16 are located on the side of the minimum bus bar side plate portion 26 on the upper surface portion 24, on the outer side of the bus bar B, and at positions sufficiently away from the maximum bus bar side plate portion 25. The air hole 16 is released to the atmosphere at the upper surface portion 24 at the upper end portion of the cylindrical portion 23. The air holes 16 are not limited to a pair formed near both ends of the cover 14, and a plurality of pairs may be formed at appropriate positions in the same shape.

  Such a luminaire 10 is constructed with the bracket 17 screwed to a column or a housing and the power source 13 is electrically connected to an external power source.

  When a predetermined current is supplied from the external power source to the power source unit 13, the LEDs 18 of the LED unit 12 emit light to illuminate roads and parks.

  The temperature in the lamp chamber 22 rises due to the light emission of the LED 18 accompanying the power supply to the power supply unit 13, and the pressure rises. Then, when the power supply to the power supply unit 13 is stopped, the temperature in the lamp chamber 22 decreases, and as the pressure in the lamp chamber 22 decreases, outside air is introduced from the air holes 16 to perform a breathing action.

  When moisture such as water droplets intrudes into the lamp chamber 22 when exposed to wind and rain, the moisture is discharged from the drain hole 15 disposed at the lowest position of the cover 14.

  At this time, the moisture that naturally falls through the surface of the cover 14 tends to adhere to the opening 27 in the cylindrical portion 23 of the air hole 16. However, since the opening 27 has an opening dimension L6 of 8 mm, the water does not adhere and continues to fall naturally.

  In contrast to this, when moisture is applied to the opening 27 of the cover 14 from the horizontal direction due to wind and rain or the like, the moisture enters the inside of the cylinder portion 23 through the opening 27 and the maximum bus side plate portion on the inner surface of the cylinder portion 23. It adheres to 25. However, since the air hole 16 is disposed at a position sufficiently separated from the maximum bus side plate portion 25 on the upper surface portion 24 covering the upper end portion of the cylindrical portion 23, the moisture adhering to the maximum bus side plate portion 25 is air. It does not reach the holes 16 and does not introduce moisture through the air holes 16.

As described above, in the luminaire 10 according to the embodiment of the present invention, the air holes 16 are provided in the upper surface portion 24 that covers the upper end portion of the cylindrical portion 23 that extends from the surface of the cover 14 to the inside of the cover 14. It has been.
Thereby, since the air hole 16 is disposed at a position recessed from the surface of the cover 14, flying insects such as insects are difficult to enter.
Therefore, maintenance-free can be realized by preventing the invasion of flying pests.

In the lighting fixture 10 of one embodiment of the present invention, the air holes 16 are disposed at positions recessed from the surface of the cover 14 toward the upper part inside the cover 14.
As a result, moisture does not adhere to the air holes 16, so that even if the drain hole 15 is blocked by moisture, moisture is not sucked through the air holes 16.
Therefore, since moisture does not enter the interior of the lamp chamber 22, maintenance of the power supply unit 13 and the LED unit 12 inside the lamp chamber 22 and suppression of the occurrence of condensation inside the lamp chamber 22 can be performed.

In the lighting fixture 10 of one embodiment of the present invention, the air hole 16 is formed so that the cylindrical portion 23 is formed upward from the surface of the cover 14 that is formed in a tapered shape downward. Are disposed on the side of the minimum bus D facing the maximum bus C of the plurality of buses forming the cylindrical portion 23.
Thereby, the water | moisture content applied to the surface of the cover 14 adheres to the largest bus-bar C side, and does not adhere to the minimum bus-bar D.
Accordingly, the air hole 16 is disposed at a position away from the moisture on the surface of the cover 14, so that moisture can be reliably prevented from entering.

  In addition, the instrument main body 11, the LED unit 12, the power supply unit 13 and the like used in the above embodiments are not limited to those illustrated, and can be appropriately changed.

10 Lighting Equipment 11 Equipment Body 12 LED Unit (Light Source)
14 Cover 15 Drainage hole 16 Air hole 22 Light chamber 23 Tube part 24 Upper surface part

Claims (2)

A light source;
An instrument body;
A cover that has a tapered outer shape that tapers downward, and is attached to the instrument body to form a lamp chamber that houses the light source between the cover and the instrument body;
A drain hole for discharging moisture in the lamp chamber , which is the top of the cover and formed at the lowest position ;
Of the cover is higher than the water drain hole, and, at a position close to the upper end portion of the cover, formed projecting What toward the interior of the upper front Symbol cover, lower end, along the surface of the cover A cylindrical portion that is an open end of a slope,
An air hole provided in an upper surface portion of the tube portion for communicating the inside of the lamp chamber with outside air, and
In the cylindrical portion, the bus corresponding to the lowest point of the open end of the inclined surface of the cylindrical portion among the generating lines that are straight lines constituting the shape of the inner wall surface of the cylindrical portion becomes the maximum bus, and the inclined surface of the cylindrical portion The bus corresponding to the highest point at the open end of is the smallest bus,
When a perpendicular line passing through the center of the upper surface portion of the tube portion and perpendicular to the surface of the upper surface portion is defined as the axis of the tube portion, the air hole is located on the minimum bus line side with respect to the axis of the tube portion. A lighting fixture characterized by that. The lighting apparatus according to claim 1 , wherein a length of a straight line connecting the highest point and the lowest point of the opening end of the slope in the cylindrical portion is larger than 6 mm .

Images