JP2022133237A - Lighting device having mounting guide structure - Google Patents

Abstract

To provide a lighting device having a mounting guide structure which can be easily assembled.SOLUTION: A lighting device has a mounting guide structure and includes: a cylindrical housing 10; and a radiator 20. The radiator 20 is provided so as to be inserted into one end as seen in an axial direction A of the housing 10 or cover the one axial end of the housing 10. At least one guide groove 30 is provided in at least one of the housing 10 and the radiator 20. At least one guide bar 40 is provided at the other. The guide groove 30 extends along the axial direction A of the housing 10. At least a part of the guide bar 40 is housed in the guide groove 30 and specifies a position of the radiator 20 as seen in a circumferential direction relative to the housing 10.SELECTED DRAWING: Figure 2

Description

The present invention relates to the field of luminaires, and more particularly to luminaires with mounting guide structures.

FIG. 1 shows a luminaire comprising a housing 1, a radiator 2 and a light source plate M. FIG. The light source plate M is fixed to the radiator 2 , and the radiator 2 is mounted on the top of the housing 1 . A circuit board P is further provided in the internal cavity of the housing 1, and pins P0 on the circuit board P are used for connection with terminals M0 on the light source plate M. As shown in FIG.

Since the pin P0 can only be inserted into the terminal M0 when the radiator 2 and the housing 1 are in unique relative positions when they are mounted, assembly of the lighting fixture becomes difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a luminaire having a mounting guide structure that is easy to assemble in order to eliminate or at least mitigate the drawbacks existing in the above prior art.

A lighting fixture having a mounting guide structure provided by the present invention includes a tubular housing and a radiator, and the radiator is inserted into one end of the housing in the axial direction or one end of the housing in the axial direction. At least one guide groove is provided in one of the housing and the radiator, and at least one guide bar is provided in the other, and the guide groove extends in the axial direction of the housing At least a portion of the guide bar is accommodated in the guide groove to identify the circumferential position of the radiator with respect to the housing.

In at least one embodiment, the guide bar and the walls of the guide groove contact each other.

In at least one embodiment, the guide bar is a cantilever structure, the free end of the cantilever structure pressing against the wall of the guide groove.

In at least one embodiment, the guide groove extends parallel to the axial direction.

In at least one embodiment, the guide groove includes a guide portion and an entrance portion, the entrance portion is located at one end of the guide portion in the axial direction, and the entrance portion is open in the axial direction. , in the circumferential direction, the size of the guide portion is greater than or equal to the size of the guide bar, and the size of the entrance portion is greater than the size of the guide portion;

In at least one embodiment, there are a plurality of guide grooves, and the plurality of guide grooves are unevenly distributed in the circumferential direction.

In at least one embodiment, the housing includes an inner shell and an outer shell, the outer shell is positioned on the outer periphery of the inner shell, and at least a portion of the peripheral wall of the radiator is formed between the inner shell and the outer shell. It is inserted between them, or provided independently of the inner shell and the outer shell, and the outer shell and the radiator are integrally molded.

In at least one embodiment, the guide groove is provided on the outer circumference of the inner shell, the guide bar is provided on the radiator, and the guide bar protrudes from the peripheral wall toward the inner circumference.

In at least one embodiment, the guide groove is provided on the inner periphery of the shell, the guide bar is provided on the radiator, and the guide bar protrudes from the peripheral wall toward the outer periphery.

In at least one embodiment, the lighting fixture further includes a light source plate and a circuit board, the light source plate is fixed to the radiator, the circuit board is fixed to the housing, and the light source plate and the circuit board are Electrically connected by a plug-in structure.

The luminaire of the present invention has a simple structure and is easy to assemble.

FIG. 1 is an exploded view of part of the structure of the luminaire. FIG. 2 is an exploded cross-sectional view of part of the structure of the lighting fixture according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view of part of the structure of the lighting fixture according to Embodiment 1 of the present invention. FIG. 4 is a schematic diagram of a housing of the lighting fixture according to Embodiment 1 of the present invention. 5 is a top view of FIG. 4. FIG. FIG. 6 is a cross-sectional exploded view of the partial structure of the lighting fixture according to Embodiment 2 of the present invention. FIG. 7 is a top view of the housing of the lighting fixture according to Embodiment 2 of the present invention. FIG. 8 is an exploded view of part of the structure of the lighting fixture according to Embodiment 3 of the present invention. FIG. 9 is a cross-sectional view of part of the structure of a lighting fixture according to Embodiment 4 of the present invention.

Exemplary embodiments of the invention will now be described with reference to the drawings. These specific descriptions are merely intended to show those skilled in the art how to implement the invention, and are not intended to represent all possible ways of implementing the invention, rather than to limit the scope of the invention. It should be understood that it is not intended to

Unless otherwise specified, with reference to FIGS. 2 and 9, A indicates the axial direction of the lighting fixture, the axial direction A coincides with the axial direction of the housing 10 of the lighting fixture, and R is the diameter of the lighting fixture. The direction is indicated, and the radial direction R matches the radial direction of the housing 10 in the lighting fixture.

(Embodiment 1)
First, a lighting fixture having a mounting guide structure according to Embodiment 1 of the present invention will be described with reference to FIGS. 2 to 5. FIG.

In this embodiment, the lighting fixture includes housing 10, radiator 20 and light source plate M. As shown in FIG.

The housing 10 has a substantially cylindrical shape, and a circuit board P is provided in the internal cavity of the housing 10 .

The radiator 20 has a cover shape. The radiator 20 is mounted on one end in the axial direction A of the housing 10 . The radiator 20 is made of a material with high thermal conductivity, such as metal.

The light source plate M is also called a module substrate. The light source plate M includes one or more light emitting elements. The light emitting element is, for example, a light emitting diode (LED). By fixing the light source plate M to the radiator 20 , the heat generated when the light source plate M emits light is conducted to the radiator 20 .

The light source plate M and the circuit board P are electrically connected. Specifically, a terminal M0 is provided on the light source plate M, a pin (also called PIN) P0 is provided on the circuit board P, and the terminal M0 and the pin P0 form an insertion structure. When the heat sink 20 is mounted on the end of the housing 10, the pins P0 pass through the through holes located in the heat sink 20 and are inserted into the terminals M0 to achieve electrical connection.

In order to ensure that the pin P0 and the terminal M0 are securely connected, the housing 10 is provided with a guide groove 30, the radiator 20 is provided with a guide bar 40, and the guide bar 40 is inserted into the guide groove 30. be done. Thereby, the assembly positions in the circumferential direction (preferably unique assembly positions in the circumferential direction) of the housing 10 and the radiator 20 are determined.

In this embodiment, the housing 10 includes an inner shell 11 and an outer shell 12 , and the outer shell 12 surrounds the outer periphery of the inner shell 11 . The inner shell 11 has a substantially cylindrical cylindrical shape. The outer shell 12 has a trumpet-shaped opening at one end in the axial direction A and is connected to the inner shell 11 at the other end. It should be understood that the present invention does not limit the specific structure and connection method of the inner shell 11 and the outer shell 12. For example, the inner shell 11 and the outer shell 12 are integrally formed. may be manufactured separately.

Heatsink 20 includes an end wall 22 and a peripheral wall 21 . An end wall 22 is located at one end of the radiator 20 . The end wall 22 is substantially flat. One end of the peripheral wall 21 is connected to the end wall 22 , the other end forms an opening shape, and the peripheral wall 21 is inserted between the inner shell 11 and the outer shell 12 .

The guide groove 30 is provided on the outer peripheral portion of the inner shell 11 . The guide groove 30 is elongated and extends along the axial direction A. As shown in FIG. In this embodiment, there are two guide grooves 30, and the two guide grooves 30 are unevenly distributed in the circumferential direction of the inner shell 11 (see FIG. 5), so that the radiator 20 is uniquely distributed in the circumferential direction. It is assembled only at a position facing the housing 10, ensures alignment between the guide bar 40 and the guide groove 30, and finally secures a reliable connection between the pin P0 and the terminal M0.

Referring to FIG. 4 , guide groove 30 includes guide portion 31 and inlet portion 32 . The entrance portion 32 is preferably positioned at the end of the guide portion 31 facing the radiator 20 (or the light source plate M) in the axial direction A, and the entrance portion 32 may form an open end in the axial direction A. preferable. In the circumferential direction, the width of the entrance portion 32 is greater than the width of the guide portion 31, and the width of the guide portion 31 is greater than the width of the guide bar so that the guide bar 40 can be easily inserted into the guide portion 31 through the entrance portion 32. It is preferably equal to or slightly larger than the width of 40.

Returning to FIGS. 2 and 3, next, the assembly relationship between the guide bar 40 and the guide groove 30 will be described.

The guide bar 40 and the peripheral wall 21 of the radiator 20 are connected. The guide bar 40 is preferably formed, for example, by punching out part of the area of the peripheral wall 21 and then bending it.

In this embodiment, the guide bar 40 protrudes from the peripheral wall 21 toward the inner peripheral side. The guide bar 40 forms a cantilever structure inclined with respect to the peripheral wall 21 . The free end of the cantilever structure is used to press against the wall of guide groove 30 . The guide bar 40 is pressed against the wall (preferably including the bottom wall and the side wall) of the guide groove 30 by applying a slight elastic force (that is, slightly deformed), and the guide bar 40 and the housing are pressed together. 10 preferably form intimate contact. Such close contact ensures good guiding of the guide grooves 30 with respect to the guide bars 40, and the direct contact between the housing 10 and the radiator 20 helps the housing 10 dissipate heat. A circuit board P within the body 10 can conduct heat to the radiator 20 through the housing 10 .

In the axial direction A, the length of the guide groove 30 is the distance from the free end of the guide bar 40 to the end wall 22 of the heat sink 20, so as to ensure smooth assembly and positioning of the heat sink 20 and the housing 10. It should be understood that the above is preferred.

In addition, each region of the guide groove 30 in the axial direction A has the same position in the radial direction R of the housing 10, or there is a deviation in the radial direction R in the process of extending the guide groove 30 along the axial direction A. Since the guide groove 30 extends parallel to the axial direction A, the guide bar 40 and the wall of the guide groove 30 are in constant contact during the process of inserting the radiator 20 into the housing 10 along the axial direction A. It is preferable to obtain a good guiding action while maintaining

It should be understood that the guide groove 30 may have different regions in the axial direction A and different positions in the radial direction R. The radial size of the groove bottom is small so as to be easily guided to enter, and the axial direction A By increasing the radial size of the intermediate region of the guide groove 30, and decreasing the radial size of the bottom of the groove at the other end of the guide groove 30 so that the guide bar 40, which elastically deforms during the mounting process, slightly rebounds, To prevent the radiator 20 mounted and positioned in the axial direction A from coming off easily from the housing 10. - 特許庁

When the radiator 20 and the housing 10 are mounted and positioned in the axial direction A, the claws 10a formed in the inner shell 11 of the housing 10 and the holes 20a formed in the radiator 20 are aligned with each other. 10a passes through the hole 20a and presses the end wall of the heat sink 20 to ensure a stable connection between the heat sink 20 and the housing 10 in each direction.

(Embodiment 2)
A lighting fixture having a mounting guide structure according to Embodiment 2 of the present invention will be described with reference to FIGS. 6 and 7. FIG. Embodiment 2 is a modification of Embodiment 1, and features that are the same as or similar to those of Embodiment 1 are denoted by the same reference numerals in this embodiment, and detailed descriptions of these features are omitted.

In this embodiment, the housing 10 is provided with three guide grooves 30, and the radiator 20 is provided with three guide bars 40 correspondingly. The plurality of guide grooves 30 are unevenly distributed in the circumferential direction so as to ensure a unique position in the circumferential direction when the guide bar 40 is mounted in alignment with the guide grooves 30 .

By increasing the number of the guide bars 40 and the guide grooves 30, the radial positioning accuracy between the housing 10 and the radiator 20 is improved, and the contact area between the housing 10 and the radiator 20 is increased. The heat dissipation effect of the container 20 is improved.

(Embodiment 3)
A lighting fixture having a mounting guide structure according to Embodiment 3 of the present invention will be described with reference to FIG. Embodiment 3 is a modification of Embodiment 1, and features that are the same as or similar to those of Embodiment 1 are denoted by the same reference numerals in this embodiment, and detailed descriptions of these features are omitted.

In this embodiment, only one guide groove 30 is provided in the housing 10, and one guide bar 40 is provided in the radiator 20 correspondingly.

The single guide bar 40 and guide groove 30 simplify the device structure and facilitate alignment and positioning of the housing 10 and heat sink 20 during assembly.

When only one guide bar 40 and one guide groove 30 are aligned, when the radiator 20 and the housing 10 are assembled and positioned closely in the axial direction A due to the alignment of the claws 10a and the holes 20a, It is ensured that the radiator 20 and the housing 10 are also accurately positioned in the radial direction R, and that no further adjustment and positioning in the radial direction R is required when connecting the pin P0 and the terminal M0.

Moreover, in order to ensure reliable positioning in the radial direction, the inner diameter of the open end of the peripheral wall of the radiator 20 and the outer diameter of the inner shell 11 may be substantially equal.

(Embodiment 4)
A lighting fixture having a mounting guide structure according to Embodiment 4 of the present invention will be described with reference to FIG. Embodiment 4 is a modification of Embodiment 1, and features that are the same as or similar to those of Embodiment 1 are denoted by the same reference numerals in this embodiment, and detailed descriptions of these features are omitted.

In this embodiment, the guide groove 30 is positioned on the outer peripheral side of the guide bar 40 . Specifically, the guide groove 30 is provided on the inner peripheral portion of the outer shell 12 of the housing 10 . The guide bar 40 protrudes from the peripheral wall 21 toward the outer peripheral side.

The invention has at least one of the following advantages.

(i) According to the present invention, by aligning the guide groove 30 and the guide bar 40, the relative positions of the housing 10 and the heat sink 20 in the circumferential direction can be specified accurately, and the pin P0 and the terminal M0 can be easily connected.

(ii) Due to the contact between the guide bar 40 and the wall of the guide groove 30, the housing 10 easily conducts heat to the radiator 20, preventing the temperature of the circuit board P in the housing 10 from becoming extremely high. do.

Of course, the present invention is not limited to the above-described embodiments, and those skilled in the art can make various modifications to the above-described embodiments of the present invention based on the present invention without departing from the scope of the present invention.

For example, (i) in the present invention, the specific number of guide grooves 30 and guide bars 40 is not limited, and for example, there may be more than three guide grooves 30 (or guide bars 40).

(ii) The heat sink 20 may be integrally molded with the outer shell 12, in which case the outer shell 12 and the inner shell 11 are connected together before the heat sink 20 and the inner shell 11 are assembled. By assembling the radiator 20 and the inner shell 11, the outer shell 12 and the inner shell 11 can be assembled into one.

(iii) The guide bar 40 may be provided on the housing 10 and the guide groove 30 may be provided on the radiator 20 correspondingly.

(iv) When the terminal M0 is provided at the center of the light source plate M, the housing 10 and the radiator 20 can have two feasible assembly positions in the circumferential direction, and the phase difference between the two assembly positions is 180°, in which case pin P0 can form a connection with terminal M0 in two directions, forward and reverse.

(v) The guide bar 40 may be a protruding structure formed on the housing 10 or the radiator 20, and when aligned with the guide groove 30, the protruding guide bar 40 can be completely inserted into the guide groove 30; .

Reference Signs List 1, 10 Case 2, 20 Radiator M Light source plate M0 Terminal P Circuit board P0 Pin A Axial direction R Radial direction 11 Inner shell 12 Outer shell 21 Peripheral wall 22 End wall 30 Guide groove 31 Guide part 32 Entrance part 40 Guide bar 10a Claw 20a hole

Claims (10)

A lighting fixture having a mounting guide structure,
including a tubular housing and radiator,
The radiator is inserted into one axial end of the housing or provided to cover one axial end of the housing,
At least one guide groove is provided on one of the housing and the radiator, and at least one guide bar is provided on the other;
the guide groove extends along the axial direction of the housing,
at least part of the guide bar is accommodated in the guide groove,
A lighting fixture, characterized in that a position of the radiator in a circumferential direction with respect to the housing is specified. 2. The luminaire of claim 1, wherein the guide bar and the wall of the guide groove are in contact with each other. 3. A luminaire according to claim 1 or 2, characterized in that said guide bar is of a cantilever structure, the free end of said cantilever structure being pressed against the wall of said guide groove. The lighting fixture according to any one of claims 1 to 3, wherein the guide groove extends in parallel with the axial direction. the guide groove includes a guide portion and an inlet portion, the inlet portion being located at one end of the guide portion in the axial direction, the inlet portion being open in the axial direction;
The size of the guide portion in the circumferential direction is equal to or larger than the size of the guide bar, and the size of the entrance portion is larger than the size of the guide portion. lighting fixtures. There are a plurality of guide grooves,
The lighting fixture according to any one of claims 1 to 5, wherein the plurality of guide grooves are unevenly distributed in the circumferential direction. The housing includes an inner shell and an outer shell, the outer shell is positioned on the outer periphery of the inner shell, and at least a portion of the peripheral wall of the radiator is inserted between the inner shell and the outer shell, or
The lighting fixture according to any one of claims 1 to 6, wherein the inner shell and the outer shell are provided independently, and the outer shell and the radiator are integrally molded. The guide groove is provided on the outer peripheral portion of the inner shell,
The guide bar is provided on the radiator,
The lighting fixture according to claim 7, wherein the guide bar protrudes from the peripheral wall toward the inner peripheral side. The guide groove is provided on the inner periphery of the outer shell,
9. The lighting fixture according to claim 7, wherein the guide bar is provided on the radiator, and the guide bar protrudes from the peripheral wall toward the outer peripheral side. The lighting fixture further includes a light source plate and a circuit board, the light source plate fixed to the radiator,
The circuit board is fixed to the housing,
The lighting fixture according to any one of claims 1 to 9, wherein the light source plate and the circuit board are electrically connected by a plug-in structure.

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