JP2020017457A - Lamp fitting and manufacturing method of the same - Google Patents

Abstract

To provide a lamp fitting which achieves relatively high design flexibility, enables easy assembly, and includes multiple lenses.SOLUTION: A lamp fitting includes: multiple light sources; multiple lenses 38 which are disposed corresponding to the respective light sources; and a lens holding member 40 which has multiple openings corresponding to the light sources and to which the lenses 38 respectively corresponding to the multiple light sources are attached.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a lamp and a method for manufacturing the lamp.

  Patent Literature 1 discloses a vehicular lamp in which a plurality of lamp units each using an LED as a light source are arranged. In this vehicle lamp, a plurality of lenses are formed as one lens unit to facilitate assembly.

JP 2005-235520 A

  According to the vehicular lamp described in Patent Literature 1, assembling is somewhat easier, but since a plurality of lenses are formed as one lens unit, the degree of freedom in design is reduced.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a lamp having a plurality of lenses, which has a relatively high degree of design freedom and is easy to assemble.

  In order to solve the above problems, a lamp according to an embodiment of the present invention has a plurality of light sources, a plurality of lenses arranged corresponding to each light source, a plurality of openings corresponding to each light source, and a plurality of A lens holding member to which a lens corresponding to each of the light sources is attached.

  Another embodiment of the present invention relates to a method for manufacturing a lamp. The method includes fixing a plurality of light sources to a housing, attaching a plurality of lenses to a lens holding member, and fixing the lens holding member having the plurality of lenses attached to the housing.

  It is to be noted that any combination of the above-described components, and any replacement of the components and expressions of the present invention between methods, apparatuses, systems, and the like are also effective as embodiments of the present invention.

  According to the present invention, it is possible to provide a lamp including a plurality of lenses, which has a relatively high degree of design freedom and is easy to assemble.

1A to 1C are external views of a lamp according to an embodiment. FIG. 2 is a sectional view taken along line AA of FIG. It is BB sectional drawing of FIG.1 (c). It is a perspective view of a housing and a plurality of heat radiation fins. It is a figure which expands and shows a light source unit and its vicinity. FIG. 4 is a sectional view taken along line CC of FIG. 3. FIG. 3 is an exploded perspective view showing an attachment, a connector, and a light source unit. It is a front view showing a circuit board. It is a front view showing a lens holding member. It is a perspective view showing a lens holding member and a plurality of lenses attached to the lens holding member. FIGS. 11A and 11B are views for explaining a method of attaching a lens to a lens holding member. It is a perspective view showing the attachment concerning a modification, and its circumference.

  Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. The same or equivalent components, members, and processes shown in the drawings are denoted by the same reference numerals, and the repeated description will be omitted as appropriate. In addition, the embodiments do not limit the invention, but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

  The lamp according to the embodiment can be widely used, for example, as general lighting such as indoor and outdoor lighting, automobiles, railways, aircrafts, ships, construction equipment, and various other industrial and commercial lighting devices. It is.

FIGS. 1A to 1C are external views of a lamp 1 according to an embodiment. FIG. 1A is a top view of the lamp 1. FIG. 1B is a front view of the lamp 1. FIG. 1C is a right side view of the lamp 1. 2 and 3 are a sectional view taken along line AA and a sectional view taken along line BB of FIG. 1C, respectively. FIG. 4 is a perspective view of the housing 10 and the radiation fins 14. The lamp 1 includes a housing 10, a translucent cover 12, a plurality of radiating fins 14, and a lamp unit 16.
Hereinafter, the side where the light-transmitting cover 12 is provided with respect to the housing 10 will be described as a lamp front side.

  The lamp 1 includes a housing 10, a translucent cover 12, a plurality of radiating fins 14, and a lamp unit 16. The housing 10 is made of, for example, metal, and is preferably made of aluminum die-cast, which is lightweight, has good heat dissipation, and is easy to process. The housing 10 has a column-shaped concave portion 11 that is open toward the front of the lamp and has a bottom surface facing the lamp front-rear direction.

  A light-transmitting cover 12 is attached to the housing 10 so as to cover the opening. A lamp unit 16, which irradiates light toward the front of the lamp, is accommodated in a lamp room 18, which is a space between the housing 10 and the translucent cover 12.

  The plurality of radiating fins 14 are provided upright from the outer surface of the housing 10 on the rear side of the lamp, behind the lamp. The heat generated in the lamp unit 16 is mainly transmitted to the plurality of radiating fins 14 via the housing 10 and is radiated to the outside from there.

  FIG. 5 is an enlarged view showing the light source unit 30 and its vicinity. FIG. 6 is a sectional view taken along line CC of FIG. FIG. 7 is an exploded perspective view showing the attachment 36, the connector 34, and the light source unit 30. FIG. 8 is a front view showing the circuit board 32.

  Reference is made to FIGS. 5 to 7 in addition to FIGS. The lamp unit 16 includes a plurality of light source units 30, a circuit board 32, a plurality of pairs of connectors 34, a plurality of attachments 36, a plurality of lenses 38, and a lens holding member 40.

  The housing 10 has a plurality of light sources mounted on the bottom surface 11a of the recess 11 (that is, the surface of the wall surface of the recess 11 facing the front of the lamp), each of which is a protruding portion that protrudes in the lamp front-rear direction toward the lamp front. It has a part 42. The light source unit 30 is installed on a light source mounting surface 42a, which is a surface of the light source mounting portion 42 on the front side of the lamp. Although the shape of the light source mounting portion 42 is not particularly limited, it is formed in a substantially quadrangular prism shape in the illustrated example. The light source mounting surface 42a has a substantially rectangular shape having substantially the same size as a main surface of a power supply board 52 (described later) of the light source unit 30. The light source mounting section 42 has a plurality of positioning projections 42b for positioning the light source unit 30 vertically and horizontally, and has a plurality of positioning projections 42b protruding forward of the lamp from the light source mounting surface.

  The light source unit 30 includes a power supply board 52 and a light source 50 mounted on a main surface of the power supply board 52. The light source 50 includes a light emitting element 50a and a protective frame 50b surrounding the light emitting element 50a. The light emitting element 50a is a semiconductor light source such as an LED (light emitting diode), an LD (laser diode), and an organic or inorganic EL (electroluminescence). The power supply board 52 has a substantially rectangular shape in the present embodiment. The power supply substrate 52 has a conductive pattern including a power receiving unit 52a formed on a main surface thereof, and electrically connects the light emitting element 50a and the power receiving unit 52a.

  The housing 10 has a plurality of pairs of first fixing portions 44, each of which is a projecting portion that projects in the lamp front-rear direction toward the lamp front side on the bottom surface 11a of the recess 11. The first fixing portions 44 of each pair are provided so as to sandwich the corresponding light source mounting portion 42, and in the illustrated example, to sandwich the corresponding light source mounting portion 42 on the left and right. The circuit board 32 has a plate shape, specifically, a disk shape, and one of the two main surfaces abuts on the lamp front surface 44a of the plurality of first fixing portions 44, and will be described later. Is fixed to the first fixing portion 44 as described above. Thus, the circuit board 32 is positioned not only in the front-rear direction of the lamp but also in the surface direction. That is, the plurality of first fixing portions 44 function as positioning portions for positioning the circuit board 32 in the surface direction. The shape of the first fixing portion 44 is not particularly limited, but in the illustrated example, the first fixing portion 44 is formed in a substantially columnar shape whose central axis extends in the front-rear direction of the lamp.

  A circuit pattern (not shown) for supplying power to the light source unit 30 is formed on the circuit board 32. An opening 32 a is formed in the circuit board 32 at a position corresponding to the light source mounting part 42. Each of the plurality of light source mounting portions 42 protrudes forward of the lamp from the circuit board 32 through the corresponding opening 32a. In the circuit board 32, screw insertion holes 32b are formed at locations corresponding to the first fixing portions 44.

  The connector 34 is a metal member for electrically connecting the power supply section 32d of the circuit board 32 and the power receiving section 52a of the power supply board 52 of the light source unit 30. The connector 34 includes a plate-shaped first contact portion 70 that contacts the power supply portion 32d of the circuit board 32 and an elongated second contact portion 72 that extends from the first contact portion 70 and contacts the power receiving portion 52a of the light source unit 30. Have. The first contact portion 70 and the circuit board 32 are sandwiched between the attachment 36 and the first fixing portion 44 of the housing 10. As a result, the contact, that is, the electrical connection between the first contact portion 70 and thus the connector 34 and the power supply portion 32d of the circuit board 32 is ensured.

  The second contact portion 72 is formed in an arch shape protruding forward of the lamp. One end is connected to the first contact portion 70, and the other end is in contact with the power receiving portion 52 a of the power supply board 52 of the light source unit 30. The second contact portion 72 is elastically deformed in a state where the first contact portion 70 is fixed to the first fixing portion 44 by co-fastening, which will be described later, and the power receiving portion of the power supply board 52 of the light source unit 30 is elastically deformed. 52a is configured to be pressed. Thereby, the contact, that is, the electrical connection between the second contact portion 72 and thus the connector 34 and the power receiving portion 52a of the power supply board 52 is ensured. In addition, since the power receiving unit 52a and thus the power supply substrate 52 are pressed against the light source mounting unit 42 by the second contact unit 72, the power supply substrate 52 comes into close contact with the light source mounting unit 42 as compared with the other case. As a result, the heat radiation performance of the light source unit 30 is enhanced, and a decrease in the luminous efficiency is suppressed.

  The attachment 36 includes an insulating member 46 and a light source holder 48. The insulating member 46 is made of, for example, resin, and includes a horizontally long rectangular frame-shaped frame portion 54 having a predetermined thickness, and two screw fastening portions 56 provided at both ends in the longitudinal direction of the frame portion 54. The frame part 54 surrounds the light source unit 30 and the plurality of positioning protrusions 42b. Further, each of the two screw fastening portions 56 is formed with a screw insertion hole 56a.

  The light source holder 48 is made of, for example, metal and has a thin plate-shaped horizontally long rectangular frame-shaped frame portion 64, two screw fastening portions 66 provided at both ends in the longitudinal direction of the frame portion 64, And a pressing portion 68 extending like a leaf spring from both wall surfaces on the long side of the opening 64a. The frame portion 64 is configured such that its opening 64a is substantially the same as the opening 54a of the frame portion 54 of the insulating member 46. Further, each of the two screw fastening portions 66 is formed with a screw insertion hole 66a. As will be described later, when the insulating member 46 and the light source holder 48 are fastened to the first fixing portion 44 together, the pressing portion 68 is elastically deformed, and the power supply board 52 and, consequently, the light source unit 30 are moved by the elastic force. 42. Thus, the power supply board 52 is brought into closer contact with the light source mounting part 42, so that the heat radiation performance is enhanced, and the reduction in the luminous efficiency of the light source 50 can be suppressed.

  A screw 62 serving as a fastening member is connected to a screw insertion hole 66a formed in a screw fastening portion 66 of the light source holder 48, a screw insertion hole 56a of the screw fastening portion 56 of the insulating member 46, and a first contact of the connector 34 from the lamp front side. The light source holder 48 and the insulating member 46 are inserted into the screw insertion holes 70 a of the portion 70 and the screw insertion holes 32 b of the circuit board 32 and screwed into the screw holes 44 b formed in the surface 44 a of the first fixing portion 44. The connector 34 and the circuit board 32 are fastened together to the first fixing portion 44, that is, the housing 10.

  The circuit board 32 and the connector 34 are configured such that movement (rotational movement and parallel movement) of the connector 34 with respect to the circuit board 32 is restricted. Specifically, in the present embodiment, each of the first contact portions 70 of the connector 342 has a plate-shaped engagement piece 70b that projects toward the rear side of the lamp. An engagement groove 32c is formed in the circuit board 32 at a position corresponding to the engagement piece 70b. When the engagement piece 70b of the attachment 36 engages with or enters the engagement groove 32c of the circuit board 32, the movement of the attachment 36 with respect to the circuit board 32 is restricted. Thereby, rotation of the attachment 36 during the joint fastening can be suppressed.

  FIG. 9 is a front view showing the lens holding member 40. FIG. 9 is a perspective view showing a lens holding member 40 and a plurality of lenses 38 attached to the lens holding member 40. FIG. 10 is a perspective view showing a lens holding member and a plurality of lenses attached to the lens holding member.

  9 and 10 in addition to FIGS. The housing 10 has, on the bottom surface 11a of the concave portion 11, a plurality of second fixing portions 45 each of which is a protruding portion that protrudes in the lamp front-rear direction toward the lamp front side. The second fixing portion 45 protrudes forward of the lamp from the first fixing portion 44. The lens holding member 40 is arranged on the lamp board front side of the circuit board 32. The lens holding member 40 is, for example, a plate-shaped member made of metal, and one of the two main surfaces abuts on the front surface 45 a of the plurality of second fixing portions 45 on the lamp front side, and the second fixing portion The second fixing portion 45 and thus the housing 10 are fixed to the portion 45 by screws 58 as fastening members. The shape of the second fixing portion 45 is not particularly limited, but in the illustrated example, the second fixing portion 45 is formed in a substantially columnar shape whose central axis extends in the front-rear direction of the lamp.

  The lens holding member 40 has a plurality of circular openings 40a corresponding to the respective light source units 30. Each of the plurality of lenses 38 is attached to the opening 40 a of the lens holding member 40, that is, at a position corresponding to the light source unit 30 by bayonet engagement as described later. Each of the plurality of lenses 38 is made of resin, and projects light from the corresponding light source unit 30 forward of the lamp.

  The lens holding member 40 is configured to block light that enters the lamp 1 from the outside and travels toward the light sources 50 of the plurality of light source units 30. Specifically, the lens holding member 40 is a non-translucent member, and is formed so as to cover between the lenses 38 so that the light source 50 is not exposed from between the lenses 38. Thereby, the light source 50 can be prevented from being deteriorated by the ultraviolet rays.

  FIGS. 11A and 11B are diagrams for explaining a method of attaching the lens 38 to the lens holding member 40. FIG. FIG. 11A is a perspective view of the lens 38, and FIG. 11B is a side view of the lens holding member 40 and the lens 38.

  The lens 38 includes a main body 80 which is a plano-convex lens, a flange 81 provided on the incident surface 80a side of the main body 80, and a flange 81 provided at a distance behind the lamp with respect to the flange 81, A plurality of overhang portions 82 overhanging from the main body portion 80. The opening 40a of the lens holding member 40 has a recess 40b corresponding to the plurality of overhangs 82 on the inner wall thereof. The lens 38 is fixed to the lens holding member 40 by inserting the lens 38 into the lens holding member 40 so that the projecting portion 82 of the lens 38 passes through the concave portion 40b, and turning the lens 38 after the insertion. As shown in the drawing, a washer 83, specifically, for example, a corrugated washer may be provided between the flange portion 81 and the overhang portion. In this case, the lens 38 can be fixed to the lens holding member 40 more reliably.

Next, a method for manufacturing the above-described lamp 1 will be described.
The manufacturing method of the lamp 1 is as follows.
Fixing a plurality of light source units 30 to the housing 10;
Attaching a plurality of lenses 38 to the lens holding member 40;
Fixing the lens holding member 40 to which the plurality of lenses 38 are attached to the housing 10;
Attaching the translucent cover 12 to the housing 10.

  In the step of fixing the light source units 30, the plurality of light source units 30 are respectively inserted into the recesses 11 from the openings of the housing 10 on the front side of the lamp, and are installed in the light source mounting unit 42.

  In the step of attaching the plurality of lenses 38, each of the plurality of lenses 38 is attached to each opening 40a of the lens holding member 40 corresponding to each light source unit 30 by bayonet engagement.

  In the step of fixing the lens holding member 40 to the housing 10, the lens holding member 40 to which the plurality of lenses 38 are attached is inserted into the recess 11 from the opening on the front side of the lamp of the housing 10, and the second fixing portion, and thus the housing 10. Fixed against.

  As described above, according to the present embodiment, the power supply unit 32d of the circuit board 32 and the power reception unit 52a of the light source unit 30 can be electrically connected by the connector 34, which is a metal member. No cable is required for the connection. Further, since the first contact portion 70 and the power supply portion 32d of the circuit board 32 are sandwiched between the attachment 36 and the first fixing portion 44 of the housing 10, the electrical connection between the first contact portion 70 and the power supply portion 32d of the circuit board 32 is established. Secure connection. In addition, since the second contact portion 72 presses the power receiving portion 52a of the light source unit 30 by the elastic force of the second contact portion 72, electrical connection between the second contact portion 72 and the power receiving portion 52a of the light source unit 30 is established. Be certain. That is, according to the present embodiment, the electrical connection between the power supply unit 32d of the circuit board 32 and the power reception unit 52a of the light source unit 30 is ensured.

  Further, according to the present embodiment, the plurality of lenses 38 are attached to the lens holding member 40. Thereby, after attaching the plurality of lenses 38 to the lens holding member 40, the lens holding member 40 to which the plurality of lenses 38 are attached can be attached to the housing 10, and therefore, the assembling of the lamp 1 including the plurality of lenses 38 Becomes easier.

  The configuration and operation of the lamp according to the embodiment have been described above. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to the combination of the components, and that such modifications are also within the scope of the present invention.

(Modification 1)
FIG. 12 is a perspective view showing an attachment 136 according to a modification and its periphery. The attachment 136 includes the insulating member 46 and the light source holder 148, and is integrally formed using, for example, resin. The light source holder 148 is configured to press the power supply board 52 against the light source mounting part 42 in a state where the attachment 136 is fixed to the first fixing part 44. In the illustrated example, the light source holder 148 is a projection protruding from both long side walls of the frame portion 54. According to this modification, the same operation and effect as those of the embodiment can be obtained.

  Any combination of the above-described embodiments and modifications is also useful as an embodiment of the present invention. A new embodiment that is created by the combination has the effects of the combined embodiment and the modification. It should also be understood by those skilled in the art that the functions to be fulfilled by the components described in the claims are realized by each component shown in the embodiment and the modification or a combination thereof. .

  Reference Signs List 10 housing, 30 light source unit, 32 circuit board, 34 connector, 36 attachment, 44 first fixing part, 52 power supply board, 52a power receiving part, 70 first contact part, 72 second contact part.

Claims (5)

Multiple light sources,
A plurality of lenses arranged corresponding to each light source,
A lamp having a plurality of openings corresponding to the respective light sources, and a lens holding member to which lenses respectively corresponding to the plurality of light sources are attached.   The lamp according to claim 1, wherein the lens holding member is configured to block light that enters the lamp from the outside and travels to the plurality of light sources. A housing forming a light room;
The lamp according to claim 1, wherein the lens holding member is fixed to the housing by a fastening member. Fixing a plurality of light sources to the housing;
Attaching a plurality of lenses to the lens holding member;
Fixing the lens holding member to which the plurality of lenses are attached to the housing.   The manufacturing method according to claim 4, wherein, in the step of attaching the plurality of lenses, each of the plurality of lenses is attached to each opening of the lens holding member corresponding to each light source by bayonet engagement. Method.

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