Lighting fixtures

Abstract

To improve the flexibility of placement of ventilated and waterproof parts in lighting fixtures without compromising aesthetics. [Solution] An illuminating fixture (1) according to one aspect of the present invention comprises a cylindrical housing (11), a fixture body (10) that emits light from a first end (112) of the housing (11), a support member (20) that supports the fixture body (10), and a ventilated waterproof section (13) that has breathability and waterproofness. The ventilated waterproof section (13) is attached to a ventilated waterproof section mounting section (115) provided on the outer surface (114) of the second end (113) of the housing (11) opposite to the first end (112), and provides ventilation and waterproofing between the inside and outside of the housing (11).

Description

Technical Field

[0001] One aspect of the present invention relates to a lighting fixture.

Background Art

[0002] In a waterproof lighting fixture, a ventilation waterproof part (respirator) is provided to prevent the waterproof property from being impaired due to the expansion and compression of air inside the housing. This configuration is known as the prior art. Patent Document 1 discloses an electric appliance such as a lighting fixture that is excellent in design while having a respirator with air permeability and waterproofness.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the prior art as described above, the ventilation waterproof part needs to be provided on the outer surface of the housing within the range where the upper arm outer periphery near the housing is virtually projected onto the housing, resulting in a small degree of freedom in arranging the ventilation waterproof part and large constraints on the size of the ventilation waterproof part.

[0005] One aspect of the present invention has been made in view of the above problems, and an object thereof is to further improve the degree of freedom in arranging the ventilation waterproof part in a lighting fixture without impairing the aesthetics.

Means for Solving the Problems

[0006] To solve the above problems, a lighting fixture according to one aspect of the present invention comprises a cylindrical housing, a fixture body that emits light from a first end of the housing, a support member that supports the fixture body, and a ventilated waterproof section that is breathable and waterproof, wherein the ventilated waterproof section is attached to a ventilated waterproof section mounting portion provided on the outer surface of a second end of the housing opposite to the first end, and provides ventilation and waterproofing between the inside and outside of the housing. [Effects of the Invention]

[0007] According to one aspect of the present invention, the degree of freedom in arranging the ventilated and waterproof parts in lighting fixtures can be further improved without impairing aesthetics. [Brief explanation of the drawing]

[0008] [Figure 1] This is an example of a perspective view of a lighting fixture. [Figure 2] This is an example of a side view of a lighting fixture. [Figure 3] This is an example of a side view of a ventilated and waterproof section. [Figure 4] This is an example of an external view of the main body of a lighting fixture. [Figure 5] This is an example of a rear view of a lighting fixture. [Figure 6] This is an example of a cross-sectional view of the side of a lighting fixture. [Figure 7] This is an example of a side view of a lighting fixture. [Figure 8] This is an example of a cross-sectional view of a lighting fixture. [Figure 9] This is an example of a cross-sectional view of the side of a lighting fixture. [Figure 10] Figure 9 shows an example of an external view of the fixture body of the lighting fixture. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts will be denoted by the same reference numerals and will not be repeated in the description. In addition, the drawings will include the X, Y, and Z axes of a three-dimensional Cartesian coordinate system as appropriate for ease of understanding. For example, the X and Y axes are approximately parallel to the horizontal plane, and the Z axis is approximately parallel to the vertical direction.

[0010] Figure 1 is an example of a perspective view of a lighting fixture 1 according to this embodiment. The lighting fixture 1 is a device that emits (irradiates) light and is attached to the ceiling, floor, or wall, for example, using screws or anchor bolts. In the examples in Figure 1 and the following figures, the lighting fixture 1 is attached to a ceiling parallel to the XY plane.

[0011] As shown in Figure 1, the lighting fixture 1 comprises a fixture body 10, a support member (first arm) 20, and a mounting part 30.

[0012] As shown in Figure 1, the fixture body 10 comprises a housing 11, a second arm 110, a glass panel 12, and a ventilated waterproof section (breather) 13. In addition, the fixture body 10 includes components not shown in Figure 1, such as a reflector 15 and a power supply circuit 16 enclosed within the housing 11. A light source, such as an LED module connected to the power supply circuit 16, is provided in the center of the reflector 15.

[0013] The housing 11 is a cylindrical case that encloses the reflector 15 and the like, and is connected to the support member 20 by a screw 119 attached to the second arm 110 portion which is integrated with the housing 11. Note that the term "cylindrical" may also include shapes such as a rectangular prism and a frustum. In this embodiment, the case in which the housing 11 is cylindrical, as shown in Figure 1, will be used as an example for explanation. Figure 2 is an example of a side view of the lighting fixture 1. However, in Figure 2 and subsequent figures, the ceiling side is shown as being at the bottom. As shown in Figure 2, by changing the angle of the second arm 110 relative to the support member 20 (first arm) with the screw 119 as the axis of rotation, the fixture body 10 can change its angle relative to the support member 20 within a certain range. In other words, the fixture body 10 is rotatably connected to the support member 20.

[0014] The glass panel 12 is a transparent panel located on the front of the housing 11 and mounted on the front of the reflector 15 inside the housing 11. The lighting fixture 1 emits light from the glass panel 12 side of the fixture body 10. That is, the glass panel 12 side of the housing 11 is the direction of light emission. The end of the housing 11 to which the glass panel 12 is attached corresponds to an example of the first end 112 in this disclosure. The end also includes the surface and its vicinity. The end of the housing 11 opposite to the first end 112 corresponds to an example of the second end 113 in this disclosure. At the second end 113, the outer surface (outer surface) 114 of the housing 11 is provided with a ventilated waterproof part mounting part (recess) 115. The outer surface 114 includes the end face and side of the housing 11.

[0015] FIG. 3 is an example of a side view of the ventilation and waterproof part 13. The ventilation and waterproof part 13 is attached to the screw hole of the ventilation and waterproof part attachment part 115. The ventilation and waterproof part 13 includes an air hole 131, a packing 132, and a vent filter or the like inside, and has ventilation and waterproof properties. The vent filter is a film body made of a porous resin, and is provided between the hole along the axis of the male screw part 133 and the air hole 131. Thus, the ventilation and waterproof part 13 is configured to perform ventilation and waterproofing between the inside and outside of the housing 11, allowing gas to pass through and not allowing liquid, dust, etc. to pass through.

[0016] When the light source lights up and the lighting fixture 1 emits light, the light source and the power supply circuit 16 generate heat, and the air inside the housing 11 is heated and expands. Also, when the lighting fixture 1 stops emitting light, the air inside the housing 11 cools and is compressed. With the configuration that the ventilation and waterproof part 13 allows gas to pass through, ventilation inside the housing 11 can be achieved and the pressure change associated with lighting / extinguishing can be suppressed. Also, with the configuration that the ventilation and waterproof part 13 does not allow liquid to pass through, when the air inside the housing 11 is compressed, it is possible to suppress water droplets from entering the inside of the housing 11.

[0017] FIG. 4 is an example of an external view of the fixture body 10 in the lighting fixture 1. FIG. 4 shows an example of an external view of the fixture body 10 seen obliquely from the rear. Also, FIG. 5 is an example of a rear view of the lighting fixture 1. As shown in FIGS. 4 and 5, in one aspect, the ventilation and waterproof part attachment part 115 is provided at the second end part 113 of the housing 11 at a position on the support member 20 side of the outer surface 114 of the housing 11. Also, the ventilation and waterproof part attachment part 115 is realized as a depression appearing on the end surface formed on the outer surface 114 of the housing 11 at the second end part 113 of the housing 11. According to these configurations, the ventilation and waterproof part 13 is less conspicuous, contributing to an improvement in aesthetics.

[0018] In addition, as particularly illustrated in FIG. 5, it is more desirable that the ventilation and waterproof part 13 does not protrude from the range of the cross-sectional shape in a state of being attached to the ventilation and waterproof part attachment part 115. In other words, in a state where the ventilation and waterproof part 13 is attached to the ventilation and waterproof part attachment part 115, it is desirable that the ventilation and waterproof part 13 is arranged only within the projection area when the housing 11 is projected in the axial direction when viewed from the axial direction of the housing 11. According to the above configuration, since the ventilation and waterproof part 13 does not protrude outside the range of the cross-sectional shape, for example, when an operator grips the housing 11 during the installation of the lighting fixture 1, it is possible to prevent the ventilation and waterproof part 13 from being touched, which contributes to preventing damage to the ventilation and waterproof part 13. In other words, since the housing 11 (the outer contour of the main body) serves as a guard, an external impact does not directly reach the ventilation and waterproof part 13.

[0019] In the example of the present embodiment, the cross-sectional shape when it is assumed that there is no such depression in the housing 11 is circular. As shown in FIG. 5, the ventilation and waterproof part 13 is configured not to protrude from the range of the circle, that is, not to protrude outward from the range of the circle, in a state of being attached to the ventilation and waterproof part attachment part 115. Note that the cross-sectional shape may be read as a contour. Note that the four sides of the depression are surrounded by the housing 11, and the ventilation and waterproof part 13 may be configured to be hidden behind the wall surface of the second end part 113 when viewed from the direction shown in FIG. 5. In this case, when the housing 11 is viewed from the second end part side to the first end part side, it is possible to suppress the ventilation and waterproof part 13 from being conspicuous, thereby improving the aesthetic appearance. However, when the second end part 113 is viewed from the direction shown in FIG. 5, a configuration in which the ventilation and waterproof part 13 is visible, that is, a configuration in which a depression appears on the end surface, is more desirable because it has the effect of improving ventilation and making it difficult for water to accumulate.

[0020] FIG. 6 is an example of a cross-sectional view of the side surface of the lighting fixture 1. In the example of FIG. 6, the housing 11 having a cylindrical shape as a whole is divided into a front region that houses the reflector 15 and a rear region that houses the power circuit 16 and the like. The housing 11 may be configured to be separable into components corresponding to the front region and components corresponding to the rear region.

[0021] The support member 20 supports the fixture body 10. The mounting portion 30 is a member that is fixed to a ceiling or the like parallel to the XY plane from the negative Z-axis direction side by, for example, a screw 39 as shown in Figure 5. The support member 20 may be fixed by arbitrarily changing the angle in the rotational direction on the XY plane relative to the mounting portion 30. In other words, the support member 20 may be connected to the mounting portion 30 so as to be rotatable on the XY plane.

[0022] According to the aforementioned configuration of the lighting fixture 1, the ventilated waterproof section 13 is directly provided in the housing 11. Compared to the case where the ventilated waterproof section is provided inside the support member, as in Patent Document 1, the degree of freedom in the size of the ventilated waterproof section 13 is greatly improved. In other words, a ventilated waterproof section 13 equipped with a large vent filter that can ensure sufficient ventilation can be attached to the lighting fixture 1. In addition, the ventilated waterproof section 13 is difficult to see when the fixture body 10 is viewed from the front side or from the side opposite to the ceiling or wall to which the lighting fixture 1 is attached, making the ventilated waterproof section 13 less conspicuous and contributing to improved aesthetics.

[0023] Next, we will provide supplementary information with examples regarding the configuration of the support member 20 and the mounting part 30. Note that some of the members described below may have different shapes from the same members mentioned above.

[0024] Figure 7(a) (left side of Figure 7) is an example of a side view of the lighting fixture 1 in one embodiment. Figure 7(b) (right side of Figure 7) is an example of an enlarged view of the area around the mounting portion 30 in Figure 7(a).

[0025] As shown in Figure 7(b), the mounting portion 30 has a connection portion 32 located on the support member 20 side. Furthermore, the connection portion 32 is formed in a V-shape when viewed from a direction intersecting the connection direction between the support member 20 and the mounting portion 30, i.e., in a side view.

[0026] Furthermore, the mounting portion 30 is formed such that its radial length is longer than the radial length of the support member 20, and the connecting portion 32 has a shape that widens from the support member 20 toward the mounting portion 30. Reference numeral 7 in Figure 7(b) indicates the radial direction.

[0027] Furthermore, as illustrated in Figure 7, the connecting portion 32 may include a curved portion 33 and an inclined portion 34. The curved portion 33 is located on the support member 20 side, and the inclined portion 34 is located on the opposite side (the mounting portion 30 side). In addition, the curved portion 33 has a curved shape (concave curve) on its surface when viewed from the side, which contributes to improved aesthetics and can also improve mechanical strength. The inclined portion 34 has a straight shape on its surface when viewed from the side. As a result, it appears low and flat in appearance, which contributes to improved aesthetics. Also, the central part of the mounting portion 30 has a raised shape in the height direction, which increases the volume inside the mounting portion 30. Therefore, space can be secured inside the mounting portion 30 for arranging electronic components, etc.

[0028] The angle of the inclined portion 34 of the mounting portion 30 with respect to the mounting surface, such as a ceiling, is, for example, about 3°, but is not limited to this. The angle of the inclined portion 34 of the mounting portion 30 with respect to the mounting surface may be 30° or less, preferably 15° or less, and more preferably 10° or less. Although a ceiling is shown as an example of a mounting surface, any surface to which the mounting portion 30 can be attached, such as a wall or floor, may be used as the mounting surface. Furthermore, this disclosure also includes configurations in which the connecting portion 32 includes only one of the curved portion 33 and the inclined portion 34, as well as configurations in which the connecting portion 32 includes two or more curved portions 33 having angles different from each other with respect to the mounting portion 30, and configurations in which the connecting portion 32 includes two or more inclined portions 34 having angles different from each other.

[0029] Figure 8 is an example of a cross-sectional view of lighting fixture 1. However, in Figure 8, some of the components contained within lighting fixture 1 are omitted or simplified in the illustration.

[0030] Compared to a configuration in which the mounting portion 30 does not have a connecting portion 32, that is, a configuration in which the support member 20 and the mounting portion 30, which is rectangular in side view, are directly connected, the configuration in which the connecting portion 32 is formed in a V-shape in side view makes it possible to widen the internal space of the mounting portion 30 while keeping the height of the outer circumference of the mounting portion 30 low, as shown in the direction indicated by reference numeral 8. More specifically, widening the internal space from the support member 20 to the mounting portion 30 makes it possible to enclose a member that is larger in size in the Z-axis direction, as shown in the terminal block 38 in Figure 8. In addition, keeping the height indicated by reference numeral 8 low helps to reduce the impression that the mounting portion 30 protrudes from the ceiling or the like. Note that, as illustrated in Figure 8, the connecting portion 32 may be integrated with a screw thread that fits with the support member 20.

[0031] Figure 9 is an example of a cross-sectional view of a side view of a lighting fixture 1 according to one embodiment of the present invention. Figure 9 is an enlarged view showing the vicinity of the ventilated waterproof section mounting portion 115. In Figure 9, the first edge 117 and the second edge 118, which are part of the edges of the recess of the ventilated waterproof section mounting portion 115, are shown. As shown in Figure 9, the first edge 117 is an edge along the X-axis direction, and the second edge 118 is an edge along the Z-axis direction. Note that the term "edge" can also be used as "corner edge". Furthermore, the first edge 117 in Figure 9 has a first edge 117a located on the front side in the Y-axis direction and a first edge 117b located on the back side in the Y-axis direction, and the second edge 118 in Figure 9 has a second edge 118a located on the front side in the Y-axis direction and a second edge 118b located on the back side in the Y-axis direction. Figure 10 is an example of an external view of the fixture body 10 in the lighting fixture 1 shown in Figure 9. Figure 10 shows an example of an external view of the fixture body 10 viewed from the rear at an oblique angle.

[0032] As shown in Figures 9 and 10, the first edge 117 and the second edge 118 are located outside the fixture body 10 when the lighting fixture 1 is viewed from the side (Y-axis direction), compared to the ventilated waterproof section 13 when it is attached to the ventilated waterproof section mounting part 115. In other words, the ventilated waterproof section 13 when it is attached to the ventilated waterproof section mounting part 115 is contained within the recess formed by the first edge 117 and the second edge 118, in both the Z-axis and X-axis directions. This means that even when the lighting fixture 1 is viewed from the side, the ventilated waterproof section 13 is hidden from view by the housing 11 of the lighting fixture 1. In other words, when the ventilated waterproof section 13 is attached to the ventilated waterproof section mounting part 115, it is configured to be located only within the projection area when the housing 11 is projected in the lateral direction when viewed from the side of the housing 11.

[0033] According to the above configuration, the visibility of the ventilated waterproof section 13 can be suppressed, thereby improving the aesthetic appearance of the lighting fixture 1. Furthermore, damage and deterioration of the ventilated waterproof section 13 due to contact with rainwater, wind, and flying objects such as stones, sand, and leaves can be suppressed. Moreover, as mentioned above, it is possible to suppress contact with the ventilated waterproof section 13 when, for example, a worker grips the housing 11 during the installation of the lighting fixture 1, thereby contributing to the prevention of damage to the ventilated waterproof section 13.

[0034] In addition, the distance between the first edge 117a and the first edge 117b, and the distance between the second edge 118a and the second edge 118b, should be such that the ventilated waterproof section 13 can be installed, and it is desirable that the distance be as short as possible. In other words, the area corresponding to the recessed portion of the ventilated waterproof section mounting portion 115, in terms of area on the XY plane and the YZ plane, should be as compact as possible. This is because the shorter the aforementioned distances and the more compact the recess, the larger the volume inside the housing 11, making it easier to arrange electronic components such as wiring inside the housing 11, and also suppressing the rise in ambient temperature inside the housing 11, thereby increasing the heat dissipation effect. Furthermore, the shorter the aforementioned distances and the more compact the recess, the greater the function of the housing 11 as a guard for the ventilated waterproof section 13, resulting in a more pronounced effect of improving the aesthetics of the lighting fixture 1 and suppressing damage to the ventilated waterproof section 13.

[0035] Embodiments of the present invention have been described above with reference to the drawings (Figures 1 to 10). However, the present invention is not limited to the embodiments described above, and can be implemented in various forms without departing from its spirit. Furthermore, the multiple components disclosed in the above embodiments can be modified as appropriate. For example, some components from all the components shown in one embodiment may be added to the components of another embodiment, or some components from all the components shown in one embodiment may be deleted from the embodiment.

[0036] Furthermore, the drawings schematically show each component in order to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown may differ from the actual dimensions due to the convenience of drawing creation. Also, the configuration of each component shown in the above embodiments is merely an example and is not particularly limiting, and it goes without saying that various modifications are possible without substantially departing from the effects of the present invention. [Explanation of Symbols]

[0037] 1 Lighting fixtures 10. Main body of the device 11 cabinets 12 glass panels 13. Breathable and waterproof section (breathing apparatus) 15 Reflector 16 circuit boards 20 Support member (first arm) 32 Connection part 33 Curved section 34 Slope 30 Mounting part 110 Second Arm 112 First end 113 Second end 114 Exterior 115 Ventilated waterproof section mounting section (recess) 117, 117a, 117b 1st edge 118, 118a, 118b Second edge

Claims

1. A device body comprising a cylindrical housing and emitting light from the first end of the housing, A support member that supports the main body of the aforementioned device, It is equipped with a breathable and waterproof section that is both breathable and waterproof, The aforementioned ventilated waterproof section is It is attached to a ventilated and waterproof mounting portion provided on the outer surface of the second end of the housing opposite to the first end, A lighting fixture that provides ventilation and waterproofing between the inside and outside of the aforementioned housing.

2. The lighting fixture according to claim 1, wherein the ventilated waterproof mounting portion is provided at the second end of the housing, at a position on the outer surface of the housing on the side of the support member.

3. The lighting fixture according to claim 1 or 2, wherein the ventilated waterproof mounting portion is a recess formed on the outer surface of the housing at the second end of the housing.

4. The aforementioned ventilated waterproof section is The lighting fixture according to claim 3, which, when attached to the ventilated waterproof mounting portion, is positioned only within the projection area obtained when the housing is projected in the axial direction, when viewed from the axial direction of the housing.

5. The aforementioned ventilated waterproof section is The lighting fixture according to claim 3, which, when attached to the ventilated waterproof mounting portion, is positioned only within the projection area when the housing is projected in the lateral direction when viewed from the side of the housing.

6. The aforementioned device body is The lighting fixture according to claim 1 or 2, which is rotatably connected to the support member.

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