JP7494600B2 - Lighting - Google Patents

Description

The present invention relates to lighting.

Conventionally, LED lighting, which uses an LED (Light Emitting Diode) as the light source, has been known as a type of lighting (see, for example, Patent Document 1).

JP 2015-153639 A

Currently, it is being considered to make the housing itself reusable by attaching a light source unit that integrates an LED with a terminal block that connects to an external device, or a base that holds the LED and terminal block, in a replaceable manner to the housing. LEDs generally have a long lifespan compared to other light sources, so currently, when an LED deteriorates, the entire lighting fixture is replaced. However, LED-related technology is rapidly innovating, and it is expected that there will be cases where the LED and its surrounding equipment (light source unit) will be replaced with a newly developed light source unit even before the LED deteriorates. From this perspective, it is beneficial for users to have a light source unit that can be easily replaced in the housing. In addition, measures to dissipate heat from the light source unit are also required.

The object of the present invention, which was made by the inventor of the present application with a new focus on the above problem, is to provide an illumination lamp that can improve the replaceability of the light source unit in the housing and also improve the heat dissipation of the light source unit.

The lighting lamp according to one aspect of the present invention is a lighting lamp having a light source unit and a housing in which the light source unit is housed. The light source unit includes a light source section, a terminal block to which a cable is connected, and a base supporting the light source section and the terminal block. The housing includes a main body section having a support surface that supports the housed light source unit from below, and a locking section that is attached to the main body section and locks the light source unit. The locking section biases the peripheral portion supported by the support surface of the base in a state where it abuts against the peripheral portion at an angle that becomes upward as it approaches the center of the base.

The lighting fixture of the present invention improves the replaceability of the light source unit relative to the housing, and also improves the heat dissipation of the light source unit.

1 is a conceptual diagram showing the appearance of an illumination pole equipped with an illumination lamp according to an embodiment. FIG. 2 is a cross-sectional view showing the configuration of the illumination lamp of FIG. 1 . 2 is a plan view showing a state in which a lid portion of the illumination lamp of FIG. 1 is open. FIG. FIG. 2 is a side view showing a state in which a lid portion provided on the illumination lamp of FIG. 1 is open. 2 is an exploded perspective view showing a main body and a light source unit of the illumination lamp of FIG. 1 . FIG. FIG. 2 is a perspective view showing a schematic configuration of a restricting portion and a locking portion according to the embodiment. FIG. 7 is an exploded perspective view showing the restricting portion and the locking portion of FIG. 6 in an exploded state. 7 is a cross-sectional view showing a state in which the restricting portion and the locking portion in FIG. 6 are locked with the substrate. FIG.

Below, a description will be given of an illumination lamp according to an embodiment of the present invention with reference to the drawings. Note that the embodiments described below are comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, each figure in the attached drawings is a schematic view and is not necessarily an exact illustration. Furthermore, the same reference numerals are used in each figure to identify the same or similar components.

(Embodiment)
[Lighting]
First, a description will be given of the configuration of a lighting pole 1 equipped with an illumination lamp 10 according to the present embodiment. Fig. 1 is a conceptual diagram showing the external appearance of a lighting pole 1 equipped with an illumination lamp 10 according to the present embodiment.

As shown in FIG. 1, the lighting pole 1 includes a lighting lamp 10 that is provided at the top and emits light for illumination, and a support pole 2 that stands upright from the ground or the like. The lighting lamp 10 is an LED lighting lamp that uses an LED 321 (Light Emitting Diode: see FIG. 2) as a light source to illuminate the road, and is supported by the support pole 2. A power cable electrically connected to a power system such as a commercial power source is passed through the support pole 2 and electrically connected to the lighting lamp 10, thereby supplying power to the lighting lamp 10. The lighting lamp 10 may be configured to be attached to a structure other than a pole, rather than being installed on the support pole 2. The installation location of the lighting lamp 10 is not limited to the side of the road (sidewalk or roadway), and can be installed in any location, such as in a plaza such as a park, on the grounds of a factory, or in a service station at a gas station.

Next, the configuration of the illuminating lamp 10 will be described in detail. Fig. 2 is a cross-sectional view showing the configuration of the illuminating lamp 10 of Fig. 1. Fig. 3 is a plan view showing the lid portion 60 of the illuminating lamp 10 of Fig. 1 in an open state. Fig. 4 is a side view showing the lid portion 60 of the illuminating lamp 10 of Fig. 1 in an open state. Fig. 5 is an exploded perspective view showing the main body portion 50 and the light source unit 30 of the illuminating lamp 10 of Fig. 1 in an exploded state.

In the following description and drawings, the longitudinal direction of the illuminating lamp 10 is defined as the Y-axis direction. The left-right direction of the illuminating lamp 10 is defined as the X-axis direction. The thickness direction of the illuminating lamp 10 is defined as the Z-axis direction. The X-axis direction, Y-axis direction, and Z-axis direction intersect with each other (orthogonal in this embodiment). In the following description, for example, the positive X-axis direction indicates the side of the X-axis arrow (one side), and the negative X-axis direction indicates the opposite side to the positive X-axis direction (the other side). The same applies to the Y-axis and Z-axis directions.

In this embodiment, the light 10 is attached to the support 2 so that the Z-axis direction is tilted relative to the up-down direction (see FIG. 1). However, for ease of explanation, in the following explanation, the positive Z-axis direction may be referred to as the upward direction, and the negative Z-axis direction may be referred to as the downward direction.

As shown in Figures 2 to 5, the lighting fixture 10 includes a housing 20, a light source unit 30 housed in the housing 20, and a bird-repellent hook 40 attached to the housing 20.

[Case]
The housing 20 includes a main body 50 that is open at the top, and a lid 60 that is disposed above the main body 50 and opens and closes the open portion of the main body 50. The materials of the main body 50 and the lid 60 are not particularly limited, and may be formed from a metal material having high thermal conductivity, such as aluminum, an aluminum alloy, or a zinc alloy.

The main body 50 is formed in a box shape with an open top, and houses the light source unit 30. Specifically, the main body 50 is thick at the end in the negative Y-axis direction when viewed in the X-axis direction, and tapers toward the positive Y-axis direction (see FIG. 2). Also, when viewed in the Z-axis direction, the base of the main body 50 is narrow in the negative Y-axis direction, and the width expands from approximately the center in the Y-axis direction. Hereinafter, the narrow part (base) of the main body 50 is referred to as the connecting part 51, and the expanded part (center to tip) is referred to as the lighting part 52. A partition wall 53 is provided between the connecting part 51 and the lighting part 52 to separate them. The partition wall 53 extends along the X-axis direction, and a notch 531 with an open top is formed in the center. A part of the light source unit 30 is housed in the notch 531.

The connecting portion 51 is a portion that is connected to the support pillar 2. The connecting portion 51 is provided with a fastening portion 511 to which the support pillar 2 is fastened (see FIG. 3, etc.). The fastening portion 511 is a substantially cylindrical member, and with a portion of the support pillar 2 inserted therein, the fastening portion 511 is fastened and connected to the portion of the support pillar 2 by tightening the fastening portion 511 with a bolt or the like.

In the connecting portion 51, a plurality of bosses 512a, 512b, 512c are arranged at a predetermined interval in the Y-axis direction on the inner bottom surface of the end portion in the negative X-axis direction. A female screw is formed on the upper end surface of each of the bosses 512a, 512b, 512c. Of the plurality of bosses 512a, 512b, 512c, the two bosses 512a, 512b in the positive Y-axis direction are for fixing the light source unit 30, and the remaining boss 512c is for fixing other members (such as cables) housed in the main body portion 50.

The lighting section 52 is a section that irradiates light from the light source unit 30. The lighting section 52 is provided with an enclosure wall 54 that is continuous with the partition wall 53 and that, together with the partition wall 53, surrounds the light source unit 30.

An opening 55 is formed on the underside of the illumination section 52, inside the partition wall 53 and the surrounding wall 54, to transmit light from the light source unit 30 to the outside. The opening 55 is generally rectangular when viewed in the Z-axis direction (plan view), and each corner is curved. The opening 55 is covered by a translucent cover 56.

The cover 56 is a translucent, flat, and generally rectangular member when viewed in the Z-axis direction (plan view). Each corner of the cover 56 is curved. In each of the cover 56 and the opening 55, a pair of sides face each other in the Y-axis direction and extend along the X-axis direction, and another pair of sides face each other in the X-axis direction and extend along the Y-axis direction.

The cover 56 is formed, for example, from glass or resin. The shape of the cover 56 is not limited to a substantially rectangular shape in a plan view, and may be a circular shape, an elliptical shape, a polygonal shape, etc. in a plan view. The cover 56 is also not limited to a flat plate shape, and may be a semi-elliptical sphere, a semi-sphere, a semi-cylinder, a semi-elliptical cylinder, etc. The material of the cover 56 is also not particularly limited.

A support surface 57 that supports the light source unit 30 from below is formed in a portion of the illumination section 52 above the opening 55. The support surface 57 extends along the periphery of the opening 55 and is formed in a planar shape. Specifically, the support surface 57 is formed in an inverted C shape when viewed in the Z-axis direction along one side of the opening 55 in the positive Y-axis direction and a pair of sides facing each other in the X-axis direction. The support surface 57 may extend around the entire circumference of the opening 55, or may extend intermittently. The support surface 57 may be formed in a continuous planar shape as a whole, or may be formed in a partially planar shape, as long as the portion that contacts the light source unit 30 is in surface contact.

The support surface 57 is provided with a restricting portion 70 to which a locking portion 80 that locks the light source unit 30 is attached. Specifically, two restricting portions 70 are provided at a portion of the support surface 57 in the positive Y-axis direction with a predetermined distance therebetween, and one restricting portion 70 is provided at each of the portions of the support surface 57 that face each other in the X-axis direction. Each restricting portion 70 is attached with one locking portion 80.

In this embodiment, four sets of restricting parts 70 and locking parts 80 are provided, but the number of sets is not limited to this. In order to stably lock the light source unit 30, it is sufficient to provide multiple sets of restricting parts 70 and locking parts 80. Details of the restricting parts 70 and locking parts 80 will be described later.

The lid 60 is an openable/closable lid that covers the light source unit 30 housed in the main body 50. The lid 60 has an end in the negative Y-axis direction connected to the main body 50 via a hinge 61. This allows the lid 60 to rotate around the X-axis direction, centered on the end in the negative Y-axis direction, via the hinge 61. The lid 60 is formed in a box shape with an open bottom, and when closed, the bottom edge of the lid 60 overlaps the top edge of the main body 50 all around. A packing may be placed between the bottom edge of the lid 60 and the top edge of the main body 50 all around to improve sealing.

The top surface of the lid 60 has a curved shape that protrudes upward when viewed in the X-axis direction (see FIG. 2). Therefore, the top surface of the lid 60 at the end in the positive Y-axis direction is an inclined surface that gradually slopes downward as it approaches the positive Y-axis direction.

A pressing portion 62 that protrudes in the negative Z-axis direction is provided on the inner top surface of the lid portion 60 at a position corresponding to the partition wall 53 of the main body portion 50. The pressing portion 62 is a plate-shaped portion that extends in the X-axis direction, and its lower end (tip) abuts against a part of the light source unit 30.

A through hole 64 is formed at the end of the lid 60 in the positive direction of the Y axis. A fixing screw 63 is inserted into this through hole 64 to fix the lid 60 to the main body 50.

[Light source unit]
2 and 5, the light source unit 30 integrally includes a base 31, a light source section 32, a terminal block 33, an illuminance sensor 34, and a power supply section 35. In other words, the light source unit 30 includes the base 31, the light source section 32, the terminal block 33, the illuminance sensor 34, and the power supply section 35 as a unit (module).

The base 31 supports the light source unit 32, the terminal block 33, the illuminance sensor 34, and the power supply unit 35. The base 31 includes a substrate 311, a vertical wall 312, and a base 313.

The substrate 311 is a flat substrate that supports the light source unit 32. Specifically, the substrate 311 supports the light source unit 32 on its lower surface. The substrate 311 is formed in a shape that covers the opening 55 of the illumination unit 52, and its outer periphery is supported from below by the support surface 57 of the illumination unit 52. At the positions corresponding to the respective regulating parts 70 on the outer periphery of the substrate 311, rectangular recesses 314 are formed. The light source unit 30 is locked by the locking parts 80 attached to the respective regulating parts 70 being caught by the respective recesses 314. The locking form between the recesses 314 and the locking parts 80 will be described later. The material of the substrate 311 is not particularly limited, but it is formed of a metal such as aluminum, for example.

The standing wall 312 is a portion that connects the substrate 311 and the base 313, and is a portion that supports the illuminance sensor 34. The standing wall 312 is attached to the end of the substrate 311 in the negative Y-axis direction. The standing wall 312 is an L-shaped metal plate when viewed in the X-axis direction, and includes a base 315 and a standing portion 316 bent relative to the base 315. The base 315 is a flat, rectangular portion that is parallel to the substrate 311 and is screwed to the end of the substrate 311 in the negative Y-axis direction. The standing portion 316 is a flat, rectangular portion that stands from the end of the base 315 in the negative Y-axis direction toward the positive Z-axis direction. The standing portion 316 is housed in the cutout portion 531 of the partition wall 53. The upper end of the standing portion 316 is pressed toward the main body 50 by the pressing portion 62 of the lid portion 60 when closed (see FIG. 2). This biases the light source unit 30 toward the main body 50, making it more firmly fixed.

The base 313 is a portion that supports the terminal block 33. The base 313 is a flat metal plate that is attached to the top of the vertical wall 312 and extends in the negative Y-axis direction. A small piece-shaped first mounting portion 317 extending in the negative X-axis direction is provided at the end of the base 313 in the negative X-axis direction. A small piece-shaped second mounting portion 318 extending in the negative Y-axis direction is provided at the end of the base 313 in the negative Y-axis direction. The first mounting portion 317 is screwed to a boss 512a provided on the main body 50, and the second mounting portion 318 is screwed to a boss 512b provided on the main body 50. This makes it possible to fix the light source unit 30 more firmly to the main body 50. When the terminal block 33 is screwed to the main body 50 with a metal screw, the terminal block 33 is grounded to the main body 50 via the screw and the base 313.

The light source unit 32 is a plurality of LEDs 321 (light-emitting elements) mounted on the underside of the substrate 311. The plurality of LEDs 321 are arranged in a matrix on the substrate 311, but the number and arrangement of the LEDs 321 are not particularly limited. The LEDs 321 may be SMD (Surface Mount Device) type LEDs or COB (Chip On Board) type LEDs. In this embodiment, the light source unit 32 is entirely covered by a lens body 322 attached to the underside of the substrate 311. The lens body 322 is formed from a material such as a translucent resin or glass, and distributes the light emitted by each LED 321 so as to diffuse radially. The lens body 322 does not have to be provided on the substrate 311.

The terminal block 33 is a portion to which various cables (not shown) are connected. A power cable pulled in from outside the lamp 10 and a cable connected to the power supply unit 35 are connected to the terminal block 33.

The illuminance sensor 34 is a sensor that detects the illuminance of the environment surrounding the lighting lamp 10. The illuminance sensor 34 is disposed on the base 315 of the standing wall 312.

The power supply unit 35 is a power supply circuit that supplies power supplied from outside the illumination lamp 10 via the power cable, the terminal block 33, and the cable to the light source unit 32. The power supply unit 35 is supported on the upper surface of the substrate 311. The power supply unit 35 is connected to the illuminance sensor 34, and turns on/off the power supply to the light source unit 32 based on the detection result of the illuminance sensor 34. In other words, when the detection result of the illuminance sensor 34 is equal to or greater than a predetermined threshold, the power supply unit 35 turns off the power supply to the light source unit 32 to turn it off, and when the detection result of the illuminance sensor 34 is less than the predetermined threshold, the power supply unit 35 turns on the power supply to the light source unit 32 to turn it on.

[Bird-proof hook]
The bird-proof hook 40 is a metal member having a base end 41 connected to the lid 60 and a pair of needles 42 extending from the base end 41. The base end 41 is a flat plate-shaped portion extending in the X-axis direction, and is attached to the lid 60 by screwing a screw (not shown) into a screw hole (not shown) provided at the end of the lid 60 in the Y-axis positive direction. When the lid 60 is closed, the base end 41 is sandwiched between the main body 50 and the lid 60. The pair of needles 42 extend from the base end 41 at a predetermined interval in the X-axis direction. Each needle 42 extends from the end of the lid 60 in the Y-axis positive direction in a position facing the upper surface of the lid 60. This makes it possible to block birds that try to land on the upper surface of the lid 60. Since each needle 42 is a thin and long portion, it is difficult for birds to land on each needle 42 itself. Even if a bird lands on each needle 42, the weight of the bird will cause each needle 42 to vibrate, preventing the bird from staying there.

[Restriction portion and locking portion]
Next, a description will be given of the restricting portion 70 and the locking portion 80. In the present embodiment, since the restricting portions 70 and the locking portions 80 of each set basically have the same structure, the set arranged at the center in the Y-axis direction and in the negative X-axis direction in the illumination unit 52 will be described as an example, and a description of the other sets will be omitted.

Figure 6 is a perspective view showing the schematic configuration of the restricting portion 70 and the locking portion 80 according to the embodiment. Figure 7 is an exploded perspective view showing the restricting portion 70 and the locking portion 80 in Figure 6 in an exploded manner. Figure 8 is a cross-sectional view showing the locking mode between the restricting portion 70 and the locking portion 80 in Figure 6 and the substrate 311. Specifically, Figure 8 is a cross-sectional view showing a cut surface perpendicular to the arrangement direction of the pair of leaf spring portions 82 provided in the locking portion 80. The arrangement direction of the pair of leaf spring portions 82 is along the Y-axis direction but is not parallel to the Y-axis direction, so the coordinates of the X-axis direction, the Y-axis direction, and the Z-axis direction are not shown in Figure 8. Note that in the following description, for convenience of explanation, each direction is listed and described, but strictly speaking, the object is along each direction but not parallel, that is, it is slightly tilted from each direction.

As shown in Figures 6 to 8, the restricting portion 70 is a generally rectangular parallelepiped portion that protrudes from the inner surface of the surrounding wall 54 and the support surface 57. The upper surface of the restricting portion 70 is formed in a flat shape and has a female thread 72 formed thereon. A rib 71 that protrudes upward and extends in the Y-axis direction is formed on the end of the upper surface of the restricting portion 70 facing the surrounding wall 54. The restricting portion 70 is disposed within the recess 314 of the substrate 311.

The locking portion 80 is a leaf spring that abuts against the peripheral portion of the substrate 311. Specifically, the locking portion 80 is a leaf spring formed by bending a metal plate, and is integrally provided with a fixing portion 81 and a pair of leaf spring portions 82.

The fixing portion 81 is a portion fixed to the upper surface of the regulating portion 70. The fixing portion 81 extends along the Y-axis direction, and a notch 811 is formed along the X-axis direction at the center of the fixing portion 81 in the Y-axis direction and at the end in the positive direction of the X-axis. A screw 90 that screws into the female screw 72 of the regulating portion 70 is inserted into the notch 811. When the screw 90 screws into the female screw 72 through the notch 811, the screw head of the screw 90 fastens the fixing portion 81, and the fixing portion 81 is fixed to the upper surface of the regulating portion 70. After fixing, the edge of the fixing portion 81 in the positive direction of the X-axis is in line contact with the rib 71 of the regulating portion 70. Therefore, the rib 71 of the regulating portion 70 restricts the rotation of the locking portion 80 around the screw 90, and the posture of the locking portion 80 can be stabilized.

The pair of leaf spring portions 82 are each a portion extending from the end of the fixed portion 81 in the negative direction along the X-axis toward the substrate 311. The pair of leaf spring portions 82 are arranged at a predetermined interval in the Y-axis direction. Of the pair of leaf spring portions 82, one leaf spring portion 82 extends from the end of the fixed portion 81 in the negative direction along the Y-axis, and the other leaf spring portion 82 extends from the end of the fixed portion 81 in the positive direction along the Y-axis. A restricting portion 70 is arranged between the pair of leaf spring portions 82.

Each of the pair of leaf spring parts 82 has a first part 821 and a second part 822. Each first part 821 extends from the fixed part 81 and is inclined so as to move away from the regulating part 70 in the negative direction of the Z axis. Each second part 822 extends from the tip of each first part 821 and is inclined so as to move closer to the regulating part 70 in the negative direction of the Z axis. In other words, each second part 822 is inclined upward toward the center of the substrate 311 (base 31). The tip of each second part 822 abuts against the support surface 57 of the main body part 50 while being housed in the recess 314 of the substrate 311.

Next, we will explain the operation of the locking portion 80 when attaching the light source unit 30 to the main body portion 50.

In FIG. 8, the substrate 311 and the locking portion 80 in the middle of installation are shown by dashed lines. For example, the light source unit 30 is inserted into the main body 50 from above the main body 50 by an operator. At this time, each recess 314 of the substrate 311 abuts against a pair of leaf spring portions 82 of each locking portion 80. Specifically, the bottom of each recess 314 of the substrate 311 abuts against each first portion 821 of each locking portion 80. In this state, when the substrate 311 is pushed downward by the operator, each leaf spring portion 82 of each locking portion 80 gradually elastically deforms from the base of each first portion 821 and approaches the restricting portion 70 side (see dashed line in FIG. 8). After that, when the bottom of each recess 314 passes the boundary between the first portion 821 and the second portion 822, the load on each leaf spring portion 82 is released, and it tries to restore its original shape. At this time, before each leaf spring portion 82 completely returns to its original shape, it abuts against the upper surface of the bottom of each recess 314 (the upper surface of the peripheral portion of the substrate 311) (see solid lines in FIG. 8). As a result, the substrate 311, which is part of the base 31 of the light source unit 30, is locked by the locking portion 80. As described above, in this state, each leaf spring portion 82 has not completely returned to its original shape, and each second portion 822 is always applying a biasing force to the peripheral portion of the upper surface of the substrate 311. Focusing on one locking portion 80, the second portion 822 of each leaf spring portion 82 applies a biasing force to the peripheral portion of the upper surface of the substrate 311, so that the biasing force can be distributed and applied to the substrate 311.

In addition, each second portion 822 is inclined upward toward the center of the substrate 311. Therefore, the force applied from each second portion 822 to the substrate 311 is decomposed into a force (pressing force) perpendicular to the upper surface of the substrate 311 and a force (regulating force) parallel to the upper surface. The pressing force is a force that presses the substrate 311 against the support surface 57. The restricting force is a force that restricts the positional deviation of the substrate 311. If the pressing force is greater than the restricting force, the substrate 311 can be brought into close contact with the support surface 57 of the main body 50 to ensure surface contact between the two. This allows the heat of the light source unit 30 to be transmitted more reliably to the main body 50, and the heat dissipation of the light source unit 30 can be improved.

Specifically, if the angle α between each second portion 822 and the upper surface of the substrate 311 is less than 45 degrees, it is possible to make the pressing force greater than the restricting force. Furthermore, it is more preferable to set the angle α at or below such that the pressing force: restricting force = 8:2.

Then, the worker screws the first mounting portion 317 of the terminal block 33 to the boss 512a, and screws the second mounting portion 318 to the boss 512b. This fixes the light source unit 30 to the main body 50.

When replacing the light source unit 30, the worker first removes the screws from the first mounting portion 317 and the second mounting portion 318 of the terminal block 33. Next, the worker elastically deforms each leaf spring portion 82 of each locking portion 80, and removes the light source unit 30 from the main body portion 50 in a state in which the locking to the board 311 is released.

[Effects, etc.]
As described above, according to the illumination lamp 10 of the embodiment, the locking portion 80 biases the peripheral portion of the substrate 311 supported by the support surface 57 in a state of contacting with the substrate 311 at an inclination that becomes upward toward the center of the substrate 311. As a result, the biasing force applied by the locking portion 80 to the substrate 311 is decomposed into a pressing force in a direction perpendicular to the upper surface of the substrate 311 and a restricting force in a direction parallel to the upper surface. By pressing the substrate 311 against the support surface 57 by the pressing force, the substrate 311 can be brought into close contact with the support surface 57 and the two can be brought into more reliable surface contact. As a result, the heat of the light source unit 30 can be more reliably transmitted to the main body 50, and the heat dissipation of the light source unit 30 can be improved. On the other hand, since the position of the substrate 311 can be restricted by the restricting force, the substrate 311 can be held in an accurate position.

In addition, since the locking portion 80 is a leaf spring, the light source unit 30 can be easily attached to and detached from the main body portion 50 (housing 20) simply by elastically deforming the locking portion 80.

In this way, the lighting lamp 10 according to the embodiment can improve the replaceability of the light source unit 30 relative to the housing 20 and can also improve the heat dissipation of the light source unit 30. With improved replaceability, a newly developed light source unit 30 can be easily replaced relative to the housing 20, and the housing 20 can also be easily reused.

The locking portion 80 also has a pair of leaf spring portions 82 that are spaced apart from each other and abut against the peripheral portion of the substrate 311. As a result, each leaf spring portion 82 applies a biasing force to the peripheral portion of the upper surface of the substrate 311, so that the biasing force can be distributed and applied to the substrate 311. This makes it possible to prevent the biasing force from concentrating, and to stably regulate the substrate 311.

In addition, the rib 71 of the restricting portion 70 comes into contact with the fixed portion 81 of the locking portion 80 to restrict the rotation of the locking portion 80. In this way, if the rotation of the locking portion 80 is restricted, the posture of the locking portion 80 is stabilized. This also stabilizes the operation of the locking portion 80 during replacement, making it possible to further improve the replaceability of the light source unit 30. Furthermore, after the light source unit 30 is attached, a stable biasing force can be applied to the substrate 311, making it possible to further improve the heat dissipation of the light source unit 30 and the positioning relative to the light source unit 30.

When the lid 60 is closed, the pressing portion 62 of the lid 60 abuts against a part of the base 31 (the vertical wall 312), pressing the base 31 toward the main body 50. As a result, when the lid 60 is closed, the light source unit 30 is biased toward the main body 50 and is more firmly fixed. Furthermore, since the substrate 311 is in close contact with the support surface 57, the heat of the light source unit 30 can be more reliably transferred to the main body 50.

In addition, since the base 313 supporting the terminal block 33 is screwed to the main body 50, the light source unit 30 is fixed to the main body 50 even in the vicinity of the terminal block 33. Therefore, the light source unit 30 can be more stably fixed to the main body 50. By attaching and detaching the screws, the base 313 can be easily restricted and released, and replaceability can be maintained.

In addition, in the light source unit 30, the power supply unit 35 is supported on the substrate 311. In other words, even in the light source unit 30 that is unitized including the power supply unit 35, it is possible to improve the replaceability of the light source unit 30 with respect to the housing 20 and to improve the heat dissipation of the light source unit 30.

(others)
Although the illumination lamp 10 according to the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. In other words, the embodiment disclosed here is illustrative in all respects and is not restrictive, and the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims.

For example, in the above embodiment, the case where all of the multiple locking parts 80 are leaf springs is exemplified. However, it is sufficient that at least one of the multiple locking parts is a leaf spring. For example, among the multiple locking parts 80 exemplified in the above embodiment, the two locking parts attached to the part in the Y-axis positive direction on the support surface 57 are claw parts that do not elastically deform. In this aspect, when attaching the light source unit 30 to the main body part 50, the worker hooks each recess 314 at the end of the Y-axis positive direction of the substrate 311 onto the two claw parts and rotates the substrate 311 downward around each recess 314. As a result, each recess 314 facing in the X-axis direction of the substrate 311 abuts against a pair of leaf spring parts 82 of each leaf spring facing in the X-axis direction. In this state, when the substrate 311 is pushed downward by the worker, each leaf spring part 82 of each leaf spring elastically deforms to pass each recess 314 downward, and then attempts to restore to its original shape to lock each recess 314. Even in this case, each leaf spring portion 82 is always applying a biasing force to the substrate 311. When removing the light source unit 30 from the main body portion 50, the worker elastically deforms each leaf spring portion 82 of each leaf spring to release the engagement with the substrate 311, and pulls the substrate 311 out of the two claw portions to remove the light source unit 30 from the main body portion 50. In this way, if at least one of the multiple engagement portions is a leaf spring, it is possible to improve the replaceability of the light source unit 30 with respect to the housing 20 and also improve the heat dissipation of the light source unit 30.

In addition, in the above embodiment, the locking portion 80 has a pair of leaf spring portions 82, but the number of leaf spring portions installed in one locking portion may be one or three or more.

In addition, in the above embodiment, the rib 71 of the restricting portion 70 is in line contact with the edge of the fixed portion 81 of the locking portion 80 to restrict the rotation of the locking portion 80 around the screw 90, but it is also possible to restrict the rotation of the locking portion 80 with surface contact. As long as it is possible to restrict the rotation of the locking portion around the screw 90, the location of contact between the locking portion and the restricting portion may be in any way. For example, the edge of the leaf spring portion may come into contact with the side of the restricting portion.

In addition, in the above embodiment, the pressing portion 62 of the lid portion 60 presses the base 31 toward the main body portion 50 by abutting against the vertical wall 312. However, it is sufficient that the lid portion 60 presses any part of the light source unit 30, or it is not necessary for the lid portion 60 to press any part of the light source unit 30.

In addition, in the above embodiment, the base 313 is screwed to the main body 50, but the base 313 may be engaged with the main body 50 by an engaging portion.

In addition, in the above embodiment, the light source unit 32 is described as being composed of a plurality of LEDs 321, but the light source unit may be composed of a light source other than an LED.

In addition, in the above embodiment, the locking portion 80 is a leaf spring, but any member can be used as the locking portion as long as it is biased against the peripheral edge of the substrate 311 at an angle that becomes upward as it approaches the center of the substrate 311.

In addition, any combination of the above embodiments and their variations is also included within the scope of the present invention.

1 Illumination pole 2 Support pole 10 Illumination lamp 20 Housing 30 Light source unit 31 Base 32 Light source section 33 Terminal block 34 Illuminance sensor 35 Power supply section 40 Bird-proof needle 41 Base end section 42 Needle section 50 Main body section 51 Connection section 52 Illumination section 53 Partition wall 54 Surrounding wall 55 Opening 56 Cover 57 Support surface 60 Lid section 61 Hinge 62 Pressing section 63 Fixing screw 64 Through hole 70 Restricting section 71 Rib 72 Female screw 80 Locking section 81 Fixing section 82 Leaf spring section 90 Screw 311 Substrate 312 Standing wall 313 Pedestal 314 Recess 315 Base section 316 Standing section 317 First mounting section 318 Second mounting section 321 LED
322 Lens body 511 Fastening portion 512a, 512b, 512c Boss 531 Notch portion 811 Notch 821 First portion 822 Second portion α Angle

Claims (6)

An illumination lamp having a light source unit and a housing in which the light source unit is housed,
the light source unit includes a light source unit, a terminal block to which a cable is connected, and a base block supporting the light source unit and the terminal block;
the base includes a substrate supporting the light source unit,
the housing includes a main body having a support surface that supports the substrate of the housed light source unit from below, and a locking portion that is attached to the main body and locks the substrate ;
The locking portion biases the peripheral portion of the base plate supported by the support surface while being in contact with the peripheral portion at an inclination that becomes upward toward the center of the base plate. The illumination lamp according to claim 1 , wherein the engaging portion has a fixed portion fixed to the main body portion, and a pair of leaf spring portions extending from the fixed portion toward the base and abutting the peripheral portion with a gap between them. The illumination lamp according to claim 1 or 2, wherein the main body portion has a restricting portion that restricts rotation of the locking portion by coming into contact with the locking portion. a cover portion for covering the light source unit housed in the main body portion,
The illumination lamp according to any one of claims 1 to 3, wherein the cover portion abuts against a part of the base when closed, and presses the base toward the main body portion. The illumination lamp according to any one of claims 1 to 4, wherein a portion of the base that supports the terminal block is fixed to the main body by a screw. The illumination lamp according to any one of claims 1 to 5, wherein the light source unit is supported by the base and includes a power supply section connected to the light source section and the terminal block.

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