JP5409211B2 - Immersion-proof lighting device and lighting fixture - Google Patents

Description

  The present invention relates to an immersion type lighting device and a lighting fixture.

In the conventional lighting device, an elastic leaf spring is inserted between the cylindrical case and the lighting device main body housed in the case, and the case and the lighting device are closely fixed (for example, Patent Document 1). reference).
In addition, as a method of suppressing the position of the lighting device stored in the conventional outer cover, the position of the lighting device stored in the outer cover is determined by a protrusion provided on the inner side of the end lid that closes both ends of the outer cover. There is one that is suppressed (see, for example, Patent Document 2).

Japanese Patent Laying-Open No. 2005-71809 (page 4, FIG. 5) JP 2006-12751 A (first page, FIGS. 4 to 6)

However, in the conventional lighting device, the leaf spring is inserted between the cylindrical case and the lighting device main body to fix the case and the lighting device in close contact with each other. There was a problem of being inferior. Further, there is a problem that it is not surely electrically connected if the portion that contacts the lighting device main body and the case is unprocessed.
In addition, in the case where the position of the lighting device housed in the outer cover is suppressed by the protrusions provided on the inner side of the end cover that respectively close both ends of the outer cover, the lighting device in the outer cover There is a problem that heat generated from the lighting device is difficult to be dissipated from the outer cover because the tight fixation is not reliable.

  The present invention has been made to solve such problems, and the assembly workability of the lighting device main body is good with respect to the water-proof case, and the lighting device main body and the inner surface of the water-proof case are brought into close contact with each other, and is emitted from the lighting device main body. It is an object of the present invention to provide an immersion type lighting device and a lighting fixture that can reliably dissipate heat to the immersion case and can reliably connect the lighting device body and the immersion case electrically.

An immersion-type lighting device according to the present invention includes a box-shaped lighting device main body having an outer casing that covers a plurality of electronic components including an electronic component that generates heat, and a cylindrical protection device having openings at both ends. An immersion case and a bent portion bent in a U-shape are provided at the central portion, and at least one claw portion to be hooked on the upper surface on one end side of the lighting device body is provided at one end, and the other side opposite to the claw portion is provided. An elastic fixing bracket provided with at least one corner portion that comes into contact with the upper surface of the lighting device main body at the end, a packing attached to the opening of the water-proof case and closing the opening, and the packing A mounting bracket that is fixed to the opening of the water-proof case, the hook of the fixing bracket is hooked on the upper surface of one end of the lighting device body, and the lighting device body to which the fixing bracket is attached is placed in the water-proof case. Inserted and sealed case And in the packing was inserted into the opening that is fixed in the mounting bracket attached to said watertight casing, the packing is less than the cross-section inner shape of the opening of the watertight casing, the opening An insertion portion to be inserted; and a recess provided on the outer side opposite to the insertion portion, wherein the mounting bracket is inserted into the recess of the packing, and the insertion portion is the moisture-proof case. It has a protrusion part which expands this insertion part so that it may contact the inner peripheral surface of this.

According to the immersion type lighting device of the present invention, at least one claw portion provided at one end of an elastic fixing bracket provided with a bent portion bent in a “<” shape at the center portion is provided in a box. Because it is only necessary to hook the lighting device main body attached with the fixing bracket in this way into the water-proof case, hook it on the upper surface on one end side of the outer shell covering the plurality of electronic components including the electronic component that generates heat of the lighting device main body in the shape, The lighting device body is easy to assemble with respect to the water-proof case, and after inserting the lighting device body into the water-proof case, the bending part expands due to the elasticity of the fixing bracket, so that the exterior of the lighting device body and the water-proof case are Since it is in close contact with the fixing bracket when pressed, heat is emitted from the heat generating electronic components placed in the lighting device body in contact with the outer shell. Because it generates heat There is an effect that the heat hot heat can improve the heat dissipation effect conducts the heat to the watertight casing in the outer from the component.
In addition, when the lighting device main body to which the fixing bracket is attached is inserted into the waterproof case, at least one corner provided at the other end of the fixing bracket is the outer upper surface of the lighting device main body and the inner periphery of the waterproof case. Since the surfaces are inserted and housed while cutting each surface, there is an effect that the outer shell of the lighting device main body and the water-proof case are reliably electrically connected.

The perspective view which shows the immersion-proof type lighting device of Embodiment 1 of this invention. The disassembled perspective view which shows the same immersion type lighting device. The perspective view of the state which looked at the fixing metal fitting of the said immersion type lighting device from diagonally upward and diagonally downward. The perspective view which shows the assembly process of the same immersion type lighting device. The expansion perspective view which shows the assembly process of the one end side of the same immersion type lighting device. The expansion perspective view which shows the assembly process of the other end side of the same immersion type lighting device. Sectional drawing which shows the assembly process of the other end side of the same immersion type lighting device. The perspective view which shows the lighting fixture provided with the same immersion type lighting device. The disassembled perspective view which shows the lighting fixture provided with the said immersion type lighting device. The perspective view which shows the fixture of the immersion-proof type lighting device of Embodiment 2 of this invention. The perspective view which shows the 1st modification of the fixing metal fitting of the said immersion type lighting device. The perspective view which shows the 2nd modification of the fixing metal fitting of the said immersion type lighting device. The expansion perspective view which shows the assembly process of the one end side of the immersion-proof type lighting device of Embodiment 3 of this invention. The perspective view which shows the assembly process which looked at the one end side of the immersion-proof type lighting device from another angle. Sectional drawing which shows the assembly process of the one end side of the same immersion type lighting device.

Embodiment 1 FIG.
1 is a perspective view showing a water-proof type lighting device according to Embodiment 1 of the present invention, FIG. 2 is an exploded perspective view showing the water-proof type lighting device, and FIG. FIG. 4 is a perspective view showing the assembly process of the immersion type lighting device, FIG. 5 is an enlarged perspective view showing the assembly process on one end side of the immersion type lighting device, and FIG. FIG. 7 is an enlarged perspective view showing an assembly process on the other end side of the immersion type lighting device, and FIG. 7 is a cross-sectional view showing an assembly process on the other end side of the immersion type lighting device.

As shown in FIGS. 1 and 2, the immersion type lighting device 1 includes an elongated box-shaped lighting device body 2, a fixing bracket 3 attached to a case upper lid 2 a of the lighting device body 2, and a fixing bracket 3. A waterproof case 4 for housing the lighting device main body 2, a packing 5 that is inserted into the opening 4 a of the waterproof case 4 and closes the opening 4 a, and a mounting bracket that is fixed to the gasket 5 in the waterproof case 4 6 is provided.
The lighting device main body 2 includes a case upper lid 2a having a U-shaped cross section and a case bottom plate 2b having a U-shaped cross section. The case top lid 2a and the case bottom plate 2b constitute an outer shell of the lighting device main body 2.

Inside the outer case constituted by the case upper lid 2a and the case bottom plate 2b, that is, inside the lighting device main body 2, there are a printed circuit board 17, an electronic component 18 attached to the upper surface of the printed circuit board 17, and a lower surface of the printed circuit board 17. A semiconductor 19 that is an electronic component that generates heat attached to the printed circuit board 17 and connectors 2c that are attached to both sides of the upper surface of the printed circuit board 17 are disposed.
The packing 5 includes a lead wire insertion portion 5a at the center thereof. Further, the mounting bracket 6 has an insertion portion insertion hole 6a into which the lead wire insertion portion 5a of the packing 5 is inserted at the center thereof, mounting holes 6b on both sides thereof, and fixture mounting pieces 6c on both lower sides thereof. A mounting hole 6d for a tool is formed in each tool mounting piece 6c.

FIG. 3A is a perspective view of a state in which the fixing bracket is viewed obliquely from above, and FIG. 3B is a perspective view of the state in which the fixing bracket is viewed from diagonally below.
As shown in FIGS. 3A and 3B, the substantially square fixing bracket 3 is made of an elastic metal, and the outer clearance of the lighting device main body 2 is formed on both sides of one end of the fixing bracket 3. Claw portions 3 a that hang down so as to fit into the mounting bracket 3, corner portions 3 b that protrude so as to come into contact with the upper surface of the lighting device main body 2, are provided on both sides of the other end portion of the fixing bracket 3. A bent portion 3c bent in the shape of "" is provided. The bending width of the bent portion 3 c is slightly larger than the gap between the lighting device main body 2 and the opening 4 a of the water-proof case 4.

Next, the assembly process of the immersion type lighting device according to the first embodiment of the present invention will be described with reference to FIGS.
First, as shown in FIG. 6, the claw portion 3a of the fixing bracket 3 is inserted into the gap 2a1 on both sides of one end in the longitudinal direction of the case upper lid 2a of the lighting device body 2, and the corner portion 3b of the fixing bracket 3 is The fixture 3 is attached to one end of the lighting device main body 2 so as to contact the upper surface of the case upper lid 2a.
Next, the other end portion of the lighting device main body 2 having the fixing bracket 3 attached to one end portion is inserted from the opening 4 a of the water-proof case 4.
When the lighting device main body 2 is inserted into the water-proof case 4, the bent portion 3 c of the fixing bracket 3 comes into contact with the inner peripheral surface of the opening 4 a of the water-proof case 4.

At this time, the relationship between the distance X between the inner peripheral surface of the opening 4a of the immersion prevention case 4 and the upper surface of the lighting device body 2 and the distance Y between the upper surface of the lighting device body 2 and the apex of the bent portion 3c is , X <Y.
Therefore, when the lighting device body 2 is further inserted into the water-proof case 4, the bottom surface of the lighting device body 2 comes into contact with the inner peripheral surface of the water-proof case 4 by the elastic force of the fixing bracket 3.
Thus, after the lighting device main body 2 is stored in the moisture-proof case 4, the packings 5 are inserted into the openings 4a of the waterproof case 4 at both ends of the waterproof case 4, and the lead wire insertion portions 5a of the packing 5 are attached. The mounting bracket 6 is attached to the packing 5 so as to be inserted into the insertion portion insertion hole 6 a of the bracket 6, and the screws 7 are inserted into the mounting holes 6 b of the mounting bracket 6, and are provided on both sides of the water-proof case 4. The half screw portion 4 b is screwed, and the packing 5 is fixed to the end portion of the anti-soaking case 4 by the mounting bracket 6.

In this way, the fixing bracket 3 having the bent portion 3c is attached to the upper surface of the lighting device main body 2, and the lighting device main body 2 with the fixing metal fitting 3 attached thereto may be inserted into the waterproof case 4; The lighting device main body 2 is easy to assemble, and after the lighting device main body 2 is inserted into the water-proof case 4, the bending portion 3c expands due to the elasticity of the fixing bracket 3, so that the lighting device main body 2 and the water-proof case Since 4 adheres in the state pressed by the fixing metal fitting 3, the heat dissipation effect can be improved.
That is, when the semiconductor 19 which is a heat generating electronic component disposed in the lighting device body 2 is radiated by bringing it into contact with the case top lid 2a and the case bottom plate 2b constituting the outer shell, the case top lid 2a and the case bottom plate 2b Since the fixing metal fitting 3 is in close contact with the immersion case 4, heat transferred from the semiconductor 19, which is a heat generating electronic component, to the case bottom plate 2 b can be transferred to the immersion case 4 to improve the heat dissipation effect. .
Further, when the lighting device main body 2 to which the fixing bracket 3 is attached is inserted into the immersion-proof case 4, the corner 3 a of the fixing bracket 3 and the upper surface of the case upper lid 2 a that is the outer upper surface of the lighting device main body 2 are infiltrated. Since the inner peripheral surface of the case 4 is housed while being shaved, the lighting device main body 2 and the immersion case 4 are reliably electrically connected.

FIG. 8 is a perspective view showing a lighting fixture provided with the immersion type lighting device, and FIG. 9 is an exploded perspective view showing the lighting fixture provided with the immersion type lighting device.
The lighting fixture 8 including the immersion-type lighting device 1 includes a fixture body 9 to which the immersion-type lighting device 1 is attached, a lamp socket 10 that is attached to both ends of the fixture body 9 and supplies power to the lamp 12, and a fixture. A reflection plate 11 that is attached to the main body 9 and reflects light emitted from the lamp 12 is provided.
The lamp socket 10 is electrically connected to the immersion type lighting device 1 attached to the fixture body 9. Further, on both sides of the lamp 12, a water-proof cover 13 is provided for improving the water-proof property of the portion where the lamp socket 10 and the lamp 12 are electrically connected.
The immersion type lighting device 1 is screwed to the instrument main body 9 with a screw inserted into the instrument mounting hole 6d of the instrument mounting piece 6c of the mounting bracket 6.
Therefore, the immersion-proof lighting device 1 can be reliably installed on the fixture body 9 of the lighting fixture 8.

Embodiment 2. FIG.
FIG. 10 is a perspective view showing a fixing bracket of the immersion type lighting device according to the second embodiment of the present invention.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
The second embodiment is different from the first embodiment in the configuration of the fixture 3.
The fixing bracket 3 according to the second embodiment is provided with a cut and raised portion 3d in the vicinity of the bent portion 3c in addition to the claw portion 3a, the corner portion 3b, and the bent portion 3c.
This cut-and-raised portion 3 d comes into contact with the inner peripheral upper surface of the water-proof case 4 when the lighting device main body 2 to which the fixing bracket 3 is attached is inserted into the water-proof case 4.
In this manner, by providing the fixing metal 3 with the cut-and-raised portion 3d, it is possible to make contact with the upper surface of the inner periphery of the anti-soaking case 4 in addition to the corner portion 3b, and the electrical connection can be reliably performed.

FIG. 11 is a perspective view showing a first modification of the fixing bracket of the immersion type lighting device.
In addition to the claw portions 3a, the corner portions 3b, and the bent portions 3c, the fixing bracket 3 of the first modified example is provided with triangular projections 3e that project laterally on both side surfaces of the end portion having the claw portions 3a. It is a thing.
The protrusion 3 e contacts the inner peripheral side surface of the water-proof case 4 when the lighting device main body 2 to which the fixing metal fitting 3 is attached is inserted into the water-proof case 4.
In this manner, by providing the protrusion 3e on the fixing bracket 3, contact with the inner peripheral side surface of the immersion-proof case 4 in addition to the corner portion 3b can be achieved, and electrical connection can be reliably performed.

FIG. 12 is a perspective view showing a second modification of the fixing bracket of the immersion type lighting device.
The fixing bracket 3 of the second modified example is provided with a notch 3f cut inward from the side surface in the vicinity of the bent portion 3c in addition to the claw portion 3a, the corner portion 3b, and the bent portion 3c.
When the lighting device main body 2 to which the fixing bracket 3 is attached is inserted into the infiltration case 4, the incision portion 3 f comes into contact with the upper surface of the inner periphery of the infiltration case 4.
In this manner, by providing the fixing metal 3 with the cut portion 3f, the end portion of the cut portion 3f can be in contact with the upper peripheral side surface of the water-proof case 4 in addition to the corner portion 3b, and the electrical connection is ensured. It can be carried out.

Embodiment 3 FIG.
FIG. 13 is an enlarged perspective view showing the assembly process on one end side of the immersion-proof lighting device according to Embodiment 3 of the present invention, and FIG. 14 shows the assembly process of viewing the one end side of the immersion-proof lighting device from another angle. FIG. 15 is a sectional view showing an assembly process on one end side of the immersion type lighting device.
In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
In the third embodiment, the configurations of the packing 5 and the mounting bracket 6 of the first embodiment are different.

The immersion type lighting device 1 according to Embodiment 3 includes an elongated box-shaped lighting device main body 2, a fixing bracket 3 attached to a case upper lid 2a of the lighting device main body 2, and a lighting device main body to which the fixing bracket 3 is attached. 2, a packing 50 that fits into the opening 4 a of the water-proof case 4 and closes the opening 4 a, and a mounting bracket 60 that is held by the packing 50 in the water-proof case 4.
The packing 50 includes a lead wire insertion portion 5a at the center thereof, an insertion portion 50b on one side inserted into the opening 4a of the moisture-proof case 4, and a recess 50c on the other side facing the insertion portion 50a. It has.

Further, the mounting bracket 60 includes an insertion portion insertion hole 60a into which the lead wire insertion portion 50a of the packing 50 is inserted at the center thereof, mounting holes 60b on both sides thereof, and instrument mounting pieces 60c on both lower sides thereof. A mounting hole 60d for a tool is formed in each tool mounting piece 60c.
Furthermore, the mounting bracket 60 includes a protrusion 60e that is inserted into the recess 50c of the packing 50 and that pushes the insertion portion 50b outward.

Next, the assembly of the moisture-proof lighting device in Embodiment 3 will be described.
First, in a state where the lighting device main body 2 is housed in the water-proof case 4, the insertion portion 50 b of the packing 50 is inserted into the opening 4 a of the water-proof case 4 to make it closed. At this time, as shown in FIG. 15, the relationship between the opening dimension D of the opening 4a of the anti-soaking case 4 and the outer diameter C of the insertion part 50a of the packing 50 is C <D.
Next, the protrusion 60 e of the mounting bracket 60 is inserted into the recess 50 c of the packing 50 with the packing 50 attached to the anti-soaking case 4. At this time, as shown in FIG. 15, the relationship between the inner diameter B of the recess 50b of the packing 50 and the outer diameter A of the protrusion 60e of the mounting bracket 60 is A> B.

Therefore, by inserting the protrusion 60e of the mounting bracket 60 larger than the recess 50c of the packing 50 into the recess 50c of the packing 50, the recess 50c and the insertion portion 50b are expanded by the elasticity of the packing 50, and the insertion portion of the packing 50 is inserted. The outer diameter C of 50b is slightly larger than the opening dimension D of the opening 4a of the water-proof case 4.
Thus, the inner peripheral surface of the anti-soaking case 4 and the insertion portion 50b of the packing 50 can be in close contact with each other, and the water tightness can be maintained.
The same effect can be obtained by attaching the mounting bracket 60 to the packing 50 and then inserting it into the anti-soaking case 4.

  DESCRIPTION OF SYMBOLS 1 Infiltration type lighting device, 2 Lighting device main body, 2a Case top cover, 2b Case bottom plate, 2c connector, 3 Fixing bracket, 3a Claw part, 3b Corner part, 3c Bending part, 4 Insulation case, 4a Opening part, 4b Half Split screw part, 5 packing, 5a lead wire insertion part, 6 mounting bracket, 6a insertion part insertion hole, 6b mounting hole, 6c fixture mounting piece, 6d fixture mounting hole, 7 screw, 8 lighting fixture, 9 fixture body, DESCRIPTION OF SYMBOLS 10 Lamp socket, 11 Reflector, 12 Lamp, 13 Insulation cover, 17 Printed circuit board, 18 Electronic component, 19 Semiconductor

Claims (7)

A box-shaped lighting device main body having an outer shell disposed inside and covering a plurality of electronic components including electronic components that generate heat;
A cylindrical immersion case having openings at both ends;
A bent portion bent in a U-shape is provided at the central portion, at least one claw portion that is hooked on the upper surface on one end side of the lighting device body is provided at one end, and the lighting is provided at the other end opposite to the claw portion. An elastic fixing bracket provided with at least one corner portion in contact with the upper surface of the apparatus body;
A packing which is attached to the opening of the water-proof case and closes the opening;
A mounting bracket for fixing the packing to the opening of the immersion case,
The hook of the fixing bracket is hooked on the upper surface of one end side of the lighting device main body, the lighting device main body to which the fixing bracket is attached is inserted into the water-proof case, and is inserted into the opening of the water-proof case. The packing is fixed with the mounting bracket attached to the immersion case ,
The packing is smaller than the inner peripheral shape of the cross-section of the opening of the water-proof case, and has an insertion part that is inserted into the opening and a recess provided on the outer side opposite to the insertion part. And
The mounting bracket has a protrusion that is inserted into a recess of the packing and that expands the insertion portion so that the insertion portion contacts an inner peripheral surface of the water-proof case. Type lighting device.   The distance X between the inner peripheral surface of the opening of the water-proof case and the upper surface of the lighting device main body inserted into the water-proof case, and the bending portion of the upper surface of the lighting device main body and the fixing bracket 2. The immersion type lighting device according to claim 1, wherein the relationship with the distance Y to the apex is X <Y.   3. The immersion-resistant lighting device according to claim 1, wherein the fixing bracket is provided with a cut-and-raised portion in contact with an inner peripheral upper surface of the immersion-proof case in the vicinity of the bent portion.   3. The immersion-resistant lighting device according to claim 1, wherein the fixing metal is provided with protrusions projecting laterally on both side surfaces thereof and in contact with an inner peripheral side surface of the immersion-resistant case.   3. The immersion-resistant lighting device according to claim 1, wherein the fixing bracket is provided with a cut portion having an end portion in contact with the inner peripheral upper surface of the immersion-proof case in the vicinity of the bent portion. A box-shaped lighting device main body having an outer shell disposed inside and covering a plurality of electronic components including electronic components that generate heat;
A cylindrical immersion case having openings at both ends;
A packing which is attached to the opening of the water-proof case and closes the opening;
A mounting bracket for fixing the packing to the opening of the immersion case,
The packing is smaller than the inner peripheral shape of the cross-section of the opening of the water-proof case, and has an insertion part that is inserted into the opening and a recess provided on the outer side opposite to the insertion part. And
The mounting bracket has a protrusion that is inserted into a recess of the packing and that expands the insertion portion so that the insertion portion contacts an inner peripheral surface of the water-proof case. Type lighting device.   A lighting fixture comprising the immersion type lighting device according to any one of claims 1 to 6.

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