JP2019096384A - Lighting device - Google Patents

Abstract

To achieve downsizing of a lighting device.SOLUTION: An LED lighting device achieves downsizing by downsizing a member for holding a light source. In a heat sink (a holding member) 4, a holding part 8 which holds a side part of an LED substrate 6 with an opening 8a opening to the side part is formed. The holding part 8 is provided with a screw hole 8b formed along a portion which holds the LED substrate 6. The screw hole 8b is formed so that at least a part thereof overlaps with a formation position of the opening 8a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting device using, for example, an LED as a light source.

  In recent years, instead of a lighting device using a fluorescent lamp, for example, as disclosed in Patent Document 1, an LED lighting apparatus using an LED has been proposed.

Unexamined-Japanese-Patent No. 2005-19299 (Jan. 20, 2005 publication)

  Generally, a heat sink made of an aluminum plate is used to diffuse the heat generated by the LED and to provide the rigidity of the device itself. Such an LED lighting apparatus is inserted into the cover 102 of the lighting apparatus as shown in FIG. 14 with the LED substrate 106 having the LED 107 mounted on the heat sink 104, as shown in FIG. 13, for example. ing. At this time, the side plate 105 is attached to the insertion port 102 a of the cover 102 by the screw 109 in a state where the heat sink 104 is inserted into the cover 102.

  Further, as shown in FIG. 13, the heat sink 104 is formed with a holding portion 108 having an opening 108 a for holding the LED substrate 106 mounted on the surface by the side portion 106 a of the LED substrate 106. Further, screw holes 108 b for fixing the screws 109 are formed in the holding portion 108 opposite to the opening 108 a for holding the LED substrate 106.

  By the way, as a general subject of a lighting fixture, miniaturization may be mentioned. For example, in order to miniaturize the luminaire as shown in FIGS. 13 and 14, it is conceivable to miniaturize the substrate on which the light source is mounted. However, due to the arrangement of light sources, wiring patterns, etc., there is a limit to the miniaturization of the substrate, and it is difficult to realize the miniaturization of the lighting fixture only by the miniaturization of the substrate.

  An object of one embodiment of the present invention is to realize miniaturization of the entire lighting device by miniaturizing a member for holding a light source.

  In order to solve the above-mentioned subject, the lighting installation concerning one mode of the present invention is provided with the substrate by which the light source was mounted, the holding member holding the above-mentioned substrate, and the screw which fixes the above-mentioned holding member, The holding member is formed with a holding portion for holding the side portion of the substrate by the opening portion opened toward the side portion, and the holding portion is tightened with the screw along a portion for holding the substrate. A threaded hole is formed, and the threaded hole is formed so that at least a part thereof overlaps with the formation position of the opening.

  According to one aspect of the present invention, the lighting device can be miniaturized.

It is sectional drawing of the transversal direction of the heat sink with which the LED lighting apparatus which concerns on Embodiment 1 of this invention was equipped. It is an expanded sectional view of the holding part vicinity formed in the heat sink shown in FIG. It is a schematic plan view which shows the state which covered the heat sink shown in FIG. 1 by a cover, (a) is a figure which shows the state which mounted the LED board on the heat sink, (b) is a positional relationship of a LED board and a screw. Is a cross-sectional view in which It is a perspective view showing the appearance of the LED lighting device concerning this embodiment. It is a disassembled perspective view of the LED lighting apparatus 1 shown in FIG. It is a perspective view of the rubber cap with which the LED lighting apparatus concerning Embodiment 2 of this invention was equipped. It is a perspective view in the state where the side plate was fixed to the cover. FIG. 7 is a cross-sectional view showing the rubber cap shown in FIG. 6 attached to the cover shown in FIG. 7; It is a perspective view of the rubber cap with which the LED lighting apparatus concerning Embodiment 3 of this invention was equipped. FIG. 10 is a cross-sectional view showing the rubber cap shown in FIG. 9 attached to the cover shown in FIG. 7; It is a perspective view of the rubber cap with which the LED lighting apparatus concerning Embodiment 4 of this invention was equipped. FIG. 12 is a cross-sectional view showing the rubber cap shown in FIG. 11 attached to the cover shown in FIG. 7; It is a schematic sectional drawing of the heat sink which mounted the LED board in the conventional LED lighting apparatus. It is a schematic plan view which shows the state which covered the heat sink shown in FIG. 13 by a cover, (a) is a figure which shows the state which mounted the LED board on the heat sink, (b) is a positional relationship of LED board and screw. Is a cross-sectional view in which

Embodiment 1
Hereinafter, an embodiment of the present invention will be described in detail. In the present embodiment, an LED lighting apparatus using an LED as a light source will be described as an example. Moreover, also in the other embodiments described later, as in the present embodiment, an LED lighting device using an LED as a light source will be described as an example.

(Outline of LED lighting system)
FIG. 4 is a perspective view showing the appearance of the LED lighting device 1 according to the present embodiment.

  FIG. 5 is an exploded perspective view of the LED lighting device 1 shown in FIG.

  As shown in FIG. 4, the LED lighting device 1 includes a cylindrical cover 2 including a light source, and a rubber cap 3 covering both ends of the cover 2. That is, the cover 2 is made of a material having diffusivity, and as shown in FIG. 5A, the heat sink (holding member) 4 in a state in which the LED substrate 6 mounted with the plurality of LEDs 7 is mounted from the opening 2a. Can be inserted or removed. The heat sink 4 is fixed by screwing the side plate 5 with the screw 9 in the cover 2 in a state where the LED substrate (substrate) 6 is mounted on the surface as shown in (b) of FIG. 5. Furthermore, as shown in FIG. 5C, the rubber cap 3 covers the opening 2a at the end of the cover 2 in a state where the heat sink 4 is fixed by the side plate 5 (FIG. 5B).

(The details of the heat sink)
FIG. 1 is a cross-sectional view of the heat sink 4 in the short side direction.

  FIG. 2 is an enlarged cross-sectional view of the vicinity of the holding portion 8 formed on the heat sink 4 shown in FIG.

  FIG. 3 is a schematic plan view showing the heat sink 4 shown in FIG. 1 covered by the cover 2, wherein (a) is a view showing the LED substrate 6 mounted on the heat sink 4, (b) Is a cross-sectional view in which the positional relationship between the LED substrate 6 and the screw 9 is known.

  The heat sink 4 is for diffusing (releasing) heat generated by the LED substrate 6 mounted on the surface, and is made of, for example, plate-like aluminum. As shown in FIG. 1, the heat sink 4 is formed with a holding portion 8 which holds the side portion of the LED substrate 6 placed on the surface so as to cover the lateral side.

  The holding portion 8 is configured to hold the LED substrate 6 by means of an opening 8 a having a substantially U-shaped cross section, which is open toward the side portion in the short side direction of the LED substrate 6. Further, screw holes (screw holes) 8 b for fixing the heat sink 4 with the screws 9 through the openings 5 b of the side plate 5 are formed in the holding portion 8.

  The screw hole 8b is integrally formed with the opening 8a so as to completely include a projection image obtained by projecting the opening 8a to the screw hole 8b. It is preferable that the bishole 8b be formed so that the center thereof coincides with the center of the opening 8a.

  According to the holding portion 8, the heat sink 4 and the LED substrate 6 are notched on the end side so as not to interfere with the screw 9 inserted into the screw hole 8b as shown in (a) and (b) of FIG. It is In addition, the range of the notch of LED board 6 is taken as the range which does not affect arrangement | positioning of LED7 mounted. Specifically, the LED 7 can be disposed up to the end of the LED substrate 6 by notching only the portion where the screw 9 is inserted.

(effect)
According to the above configuration, the screw hole 8b of the holding portion 8 is formed so as to completely overlap with the position where the opening 8a of the holding portion 8 is formed. The width of the heat sink 4 including the holding portion 8 can be narrowed compared to the case of forming

  Thereby, size reduction of the LED lighting apparatus 1 can be achieved.

  In the present invention, the opening 8 a and the screw hole 8 b may be integrally formed when forming the holding portion 8 so as to be positioned on the same straight line in the longitudinal direction of the heat sink 4. The screw holes 8b of the portion 8 do not have to be formed so as to completely overlap with the formation position of the opening 8a of the holding portion 8. At least a part of the screw holes 8b is viewed from the mounting direction of the side plate 5 It may be formed to overlap with the formation position of the opening 8a.

  The height H of the opening 8a is preferably slightly higher than the thickness of the LED substrate 6 and smaller than the diameter of the screw hole 8b, as shown in FIG. Thus, the heat sink 4 can be reliably fixed to the side plate 5 by securely tightening the screw 9.

  Furthermore, as described in the present embodiment, when the heat sink 4 is fixed to the side plate 5 by the screw 9, the positions of the screw holes 8b formed in the heat sink 4 and the opening 5b formed in the side plate 5 It is possible to properly fix the heat sink 4 to the side plate 5 simply by That is, there is no need to perform alignment as in the case of connecting the heat sink 4 and the side plate 5 with an adhesive.

  Moreover, since the miniaturization of the LED lighting device 1 can be achieved, the LED lighting device 1 can be suitably used as illumination of a showcase or the like for displaying a product.

Second Embodiment
Other embodiments of the present invention are described below. In addition, about the member which has the same function as the member demonstrated in the said embodiment for convenience of explanation, the same code | symbol is appended, and the description is not repeated.

(Rubber cap)
FIG. 6 is a perspective view of the rubber cap 3.

  As shown in FIG. 5 of the first embodiment, the rubber cap 3 according to the present embodiment covers the side plates 5 fixed to both ends of the cover 2 covering the heat sink 4 on which the LED substrate 6 is mounted. The cover 2 is placed on both ends of the cover 2.

  As shown in FIG. 6, in the inner surface (inner side) 3a of the rubber cap 3, along the inner surface 3a, a groove 3b is formed in which a part of the side plate 5 described later is fitted.

(Side board)
FIG. 7 is a perspective view of a state in which the side plate 5 is fixed to the cover 2.

  As shown in FIG. 7, the side plate 5 protrudes in a state of being fixed to the opening 2 a of the cover 2. This portion is referred to as a protrusion 5a.

(Rubber cap attached state)
8 is a cross-sectional view showing the rubber cap 3 shown in FIG. 6 attached to the cover 2 in the state shown in FIG.

  The protrusion 5a of the side plate 5 fixed to the cover 2 is fitted in a groove 3b formed in the inner surface 3a of the rubber cap 3 as shown in FIG.

(effect)
By using the rubber cap 3 of the said structure, the rubber cap 3 can be made hard to remove from the cover 2. FIG. In addition, since both ends of the cover 2 are covered with the rubber cap 3, the metal portion of the LED lighting device 1 is not exposed, and therefore, it is not affected by noise such as static electricity. Furthermore, since both ends of the cover 2 are covered with the rubber cap 3, the cover 2 is waterproof.

Third Embodiment
Other embodiments of the present invention are described below. In addition, about the member which has the same function as the member demonstrated in the said embodiment for convenience of explanation, the same code | symbol is appended, and the description is not repeated.

(Rubber cap)
FIG. 9 is a perspective view of the rubber cap 33. As shown in FIG.

  In addition to the configuration of the rubber cap 3 shown in FIG. 6 of the second embodiment, the rubber cap 33 according to the present embodiment is formed with a projection 33 c that protrudes to the inner surface 33 a side at the bottom. The protrusion 33c is formed in a size that can be fitted into the opening 5c of the side plate 5 shown in FIG. 5, and there is a through hole 33d for taking out the wiring (not shown) from the LED substrate 6 to the outside. It is formed.

(Rubber cap attached state)
FIG. 10 is a cross-sectional view showing the rubber cap 33 shown in FIG. 9 attached to the cover 2 in the state shown in FIG.

  The protrusion 5a of the side plate 5 fixed to the cover 2 is fitted in a groove 33b formed in the inner surface 33a of the rubber cap 33, as shown in FIG. Further, the projection 33 c of the rubber cap 33 is fitted in the opening 5 c of the side plate 5.

(effect)
By using the rubber cap 33 configured as described above, the rubber cap 33 can be made difficult to be detached from the cover 2.

  In addition, since the protrusion 33 c of the rubber cap 33 is fitted in the opening 5 c of the side plate 5, the wiring from the LED substrate 6 is drawn out through the through hole 33 d of the protrusion 33 c of the rubber cap 33. As a result, since the wiring from the LED substrate 6 does not directly contact the side plate 5, disconnection of the wiring due to the contact by the side plate 5 can be prevented.

Embodiment 4
Other embodiments of the present invention are described below. In addition, about the member which has the same function as the member demonstrated in the said embodiment for convenience of explanation, the same code | symbol is appended, and the description is not repeated.

(Rubber cap)
FIG. 11 is a perspective view of the rubber cap 33. As shown in FIG.

  In addition to the configuration of the rubber cap 33 shown in FIG. 9 of the third embodiment, the rubber cap 33 according to the present embodiment has a plurality of projections 33e on the inner surface 33a at predetermined intervals along the inner surface 33a. It is provided.

(Rubber cap attached state)
FIG. 12 is a cross-sectional view showing the rubber cap 33 shown in FIG. 11 mounted on the cover 2 in the state shown in FIG.

  The protrusion 5a of the side plate 5 fixed to the cover 2 is fitted in the groove 33b formed in the inner surface 33a of the rubber cap 33 as shown in FIG. 12, and the protrusion 33c of the rubber cap 33 is the side plate 5 Is fitted in the opening 5c of Further, a plurality of projections 33 e formed on the inner surface 33 a of the rubber cap 33 are in close contact with the surface of the cover 2.

(effect)
By using the rubber cap 33 configured as described above, the rubber cap 33 can be made difficult to be detached from the cover 2.

  In addition, since the protrusion 33 c of the rubber cap 33 is fitted in the opening 5 c of the side plate 5, the wiring from the LED substrate 6 is drawn out through the through hole 33 d of the protrusion 33 c of the rubber cap 33. As a result, since the wiring from the LED substrate 6 does not directly contact the side plate 5, disconnection of the wiring due to the contact by the side plate 5 can be prevented.

  Furthermore, when the cover 2 is covered on the inner surface 33a of the rubber cap 33, a plurality of protrusions 33e in close contact with the surface of the cover 2 is provided, whereby the degree of adhesion between the cover 2 surface and the rubber cap 33 Can increase the waterproof performance.

  In the first to fourth embodiments, the shape of the rubber cap in each of the LED lighting devices is not particularly limited, and the surface shape of the cover 2 is as much as possible when the cross-sectional shape of the cover 2 is taken into consideration. Any shape that can be in close contact with

  Moreover, in the said Embodiment 1-4, although the LED illuminating device which used LED as a light source was demonstrated, as a light source, it is not limited to LED, Another light source may be sufficient.

[Summary]
A lighting device according to aspect 1 of the present invention includes a substrate (LED substrate 6) on which a light source (LED 7) is mounted, a holding member (heat sink 4) for holding the substrate (LED substrate 6), and the holding member (heat sink 4) a screw 9 for fixing, and the holding member (heat sink 4) holds the side portion of the substrate (LED substrate 6) by the opening 8a opened toward the side portion. Are formed, and a screw hole (screw hole 8b) for tightening the screw 9 is formed in the holding portion 8 along the portion holding the substrate (LED substrate 6), and the screw hole (screw hole 8b) is formed. Is characterized in that at least a part thereof is formed to overlap with the formation position of the opening 8a.

  According to the above configuration, the screw hole of the holding portion is formed such that at least a part thereof overlaps with the position where the opening of the holding portion is formed, so that the screw hole is formed outside the holding portion as in the prior art. The width of the holding member including the holding portion can be narrowed as compared to the case of forming. Thereby, since the width of the holding member can be narrowed, the width of the LED lighting device can be narrowed. Therefore, the LED lighting device can be miniaturized.

  In the lighting device according to aspect 2 of the present invention, in the above aspect 1, the screw hole (screw hole 8b) may be formed so as to completely overlap with the formation position of the opening 8a.

  According to the above configuration, the width of the holding member including the holding portion is made closer to the width of the substrate by the screw hole being formed so as to completely overlap with the formation position of the opening of the holding portion. Can. Thus, the width of the holding member can be narrowed, so that the width of the lighting device can be narrowed, and the overall size of the lighting device can be reduced.

  In the lighting device according to aspect 3 of the present invention, in the above aspect 2, the diameter of the screw hole (screw hole 8 b) is larger than the height H in the direction of sandwiching the substrate (LED substrate 6) in the opening 8 a It is also good.

  According to the above configuration, the holding member can be reliably fixed to the fixing plate by securely tightening the screw.

  The illumination device according to aspect 4 of the present invention includes the cover 2 that covers the substrate (LED substrate 6) held by the holding member (heat sink 4) according to any one of the above aspects 1 to 3, In a state where the cover 2 covers the holding member (heat sink 4) on which the substrate (LED board 6) is mounted, the fixing plate (side plate 5) fixed to both ends (opening 2a) of the cover 2 is covered The cover 2 is further provided with a rubber cap 3 for covering both ends (openings 2a) of the cover 2, and a part of the fixing plate (side plate 5) is outside the cover 2 on the inner side (inner surface 3a) of the rubber cap 3 A groove 3b may be formed to fit into the protruding portion 5a that protrudes to the bottom.

  According to the above configuration, the rubber cap is not easily removed from the cover by forming a groove in the inner side of the rubber cap in which a part of the fixing plate is fitted to the protruding portion protruding to the outside of the cover. it can.

  In addition, since both ends of the cover are covered with the rubber cap, the metal portion of the lighting device is not exposed, so that the cover is not affected by noise such as static electricity.

  Furthermore, since both ends of the cover are covered by the rubber cap, it is waterproof.

  In the lighting device according to aspect 5 of the present invention, in the aspect 4, a plurality of protrusions closely contacting the surface of the cover 2 when the cover 2 is covered on the inner side (inner surface 33 a) of the rubber cap 33 The part 33e may be provided.

  According to said structure, when the said cover is further covered on the inner side of the rubber cap, the several protrusion which closely_contact | adheres to the surface of the said cover is provided, and the contact of the cover surface and rubber cap is carried out The degree can be increased and waterproof performance can be enhanced.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

1 LED lighting device (lighting device)
2 cover 2a opening 3 rubber cap 3a inner surface 4 heat sink (holding member)
5 side plate 5a protrusion 5b opening 5c opening 6 LED board 7 LED
8 Holding part 8a Opening 8b Screw hole
9 screw 33 rubber cap 33a inner surface (inside)
33b groove 33c protrusion 33d through hole 33e protrusion

Claims (5)

A substrate on which a light source is mounted,
A holding member for holding the substrate;
And a screw for fixing the holding member,
The holding member is formed with a holding portion for holding the side portion of the substrate by the opening portion opening toward the side portion.
The holding portion is formed with a screw hole for tightening the screw along a portion for holding the substrate.
The lighting device is characterized in that the screw hole is formed so that at least a part thereof overlaps with the formation position of the opening.   The lighting device according to claim 1, wherein the center of the screw hole coincides with the center of the opening.   The diameter of the said screw hole is larger than the height of the direction which inserts the said board | substrate in the said opening part, The illuminating device of Claim 2 characterized by the above-mentioned. A cover covering the substrate held by the holding member;
In a state where the cover covers the holding member holding the substrate, the cover further includes rubber caps that cover the both ends of the cover so as to cover fixing plates fixed to the both ends of the cover,
The groove in which a part of said fixed plate fits in the projection part which protruded to the outer side of the said cover is formed in the inner side of the said rubber cap, The groove part in any one of the Claims 1-3 characterized by the above-mentioned. Lighting device as described.   5. The lighting device according to claim 4, further comprising a plurality of protrusions that come in close contact with the surface of the cover when the rubber cap covers the cover.

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