CN111480031B - Display lamp - Google Patents
Display lamp Download PDFInfo
- Publication number
- CN111480031B CN111480031B CN201880079945.3A CN201880079945A CN111480031B CN 111480031 B CN111480031 B CN 111480031B CN 201880079945 A CN201880079945 A CN 201880079945A CN 111480031 B CN111480031 B CN 111480031B
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- CN
- China
- Prior art keywords
- light
- optical axis
- axis direction
- globe
- inner peripheral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003287 optical effect Effects 0.000 claims abstract description 80
- 230000002093 peripheral effect Effects 0.000 claims abstract description 79
- 210000000078 claw Anatomy 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 230000007423 decrease Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 description 17
- 230000037431 insertion Effects 0.000 description 17
- 230000002452 interceptive effect Effects 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
Abstract
The open end (3 e) of the globe (3) is connected to the base member (2), and the base member (2) is disposed on one end side in the optical axis direction (L) of the light emitting element (4) supported by the substrate (5). The reflecting member (6) is disposed in the inner space of the globe (3) and reflects the light emitted from the light emitting element (4) toward the inner peripheral surface (3 b) of the globe (3). A support member (7) that supports the globe (3) extends from an end (60 e) of the reflecting member (6) on the base member (2) side in the optical axis direction (L) toward an inner peripheral side surface (3 b) of the globe (3). The connection mechanism (8) includes an elastic claw (70) and a locking portion (80), and connects an outer edge (7 c) of the support member (7) to a support portion (Q) disposed on an inner peripheral side surface (3 b) of the globe (3). The elastic claw (70) extends from one of the outer edge (7 c) of the support member (7) and the support (Q) of the globe (3) to the other. The locking portion (80) is provided on the other of the outer edge (7 c) of the support member (7) and the support portion (Q) of the globe (3), and locks the extended end portion (72) of the elastic claw (70).
Description
Technical Field
The invention relates to a display lamp for mechanical equipment and plaque lamps.
Background
The display lamp is used, for example, to inform the surroundings of the operating state of a mechanical device such as a production facility by using light. An example of such a display lamp is disclosed in patent document 1. In patent document 1, an upper hemispherical bulb (globe) covers a light generating unit supported by a lower heat sink and is fixed to the heat sink. Light irradiated from an illumination area provided in the light generating unit is reflected by the reflecting plate and irradiated to the inner peripheral side surface of the bulb.
Prior art literature
Patent literature
Patent document 1: U.S. patent application publication No. 2013/0235682 A1 specification
Disclosure of Invention
Problems to be solved by the invention
In fig. 6 of patent document 1, the upper edge of the reflector is locked to the locking protrusion protruding from the inner peripheral side surface of the upper portion of the bulb by using adhesive bonding, snap action, or the like.
Therefore, there is an advantage in that the reflecting member and the bulb can be handled as an integral unit, and workability in assembly can be improved. On the other hand, the locking protrusion may interfere with the optical path from the illumination area, and may not display sufficient brightness.
The invention aims to provide a display lamp which can inhibit a structure of a reflecting member mounted on a lamp housing from interfering with an optical path and can perform bright display.
Means for solving the problems
The invention comprises the following steps: a light emitting device including a substrate having a light emitting element supported on one surface thereof, a base member disposed on one end side in an optical axis direction of the light emitting element and supporting the other surface of the substrate, a lamp housing having light transmittance and disposed on the other end side in the optical axis direction, the opening end of the concave shape being connected to the base member, a reflecting member disposed in an internal space of the lamp housing and reflecting light emitted from the light emitting element toward an inner peripheral side surface of the lamp housing, a supporting member supporting the reflecting member and extending from an end of the reflecting member on the base member side in the optical axis direction toward the inner peripheral side surface of the lamp housing and having an outer edge facing the inner peripheral side surface of the lamp housing, and a connecting mechanism connecting the outer edge of the supporting member to a supporting portion disposed on the inner peripheral side surface of the lamp housing; the connecting mechanism includes an elastic claw extending from one of the outer edge of the support member and the support portion of the globe to the other, and a locking portion provided on the other of the outer edge of the support member and the support portion of the globe to lock an extending end portion of the elastic claw.
In this structure, the reflecting member is attached to the lamp housing via the supporting member by a connecting mechanism including an elastic claw and a locking portion locking the elastic claw. The connecting mechanism connects an outer edge of a support member, which is disposed on a base member side of the reflecting member in the optical axis direction, to a support portion disposed on an inner peripheral side surface of the globe. Therefore, the connection mechanism can be suppressed from interfering with the optical path from the light emitting element to the inner peripheral side surface of the globe via the reflecting member. Thus, bright display can be performed.
In addition, the support portion may be disposed on the base member side with respect to the outer edge in the optical axis direction. In this structure, the connection mechanism does not interfere with the optical path from the light emitting element to the inner peripheral side surface of the globe via the reflecting member. Thus, bright display can be performed.
In addition, in the display lamp of the present invention, the elastic claw may include: the extending end portion, a base end portion, and an inclined portion, which connects the extending end portion and the base end portion and is inclined with respect to the optical axis direction.
In this configuration, the elastic claw is elastically deformed to change the inclination angle of the inclined portion with respect to the optical axis direction, and thereby the impact applied to the reflecting member and the supporting member can be reduced. Therefore, the reflecting member can be stably supported.
In the display lamp of the present invention, the inner peripheral side surface of the cover may include a lens cut portion that diffuses light from the reflecting member, and the support portion may be disposed further toward the base member side than the lens cut portion in the optical axis direction. In this structure, the support portion of the inner peripheral side surface of the translucent globe does not impair the appearance of the globe.
In the display lamp of the present invention, the following structure may be adopted: the support member includes a light condensing element that suppresses divergence of light emitted from the light emitting element, the reflection member is a tapered cylindrical light guide member having a central axis parallel to the optical axis direction, and the diameter of the reflection member decreases toward the support member, the light guide member includes: the light guide member includes a light-emitting element, a light-condensing element, a plurality of light-incident surfaces facing the light-emitting element through the light-condensing element, a plurality of light-emitting surfaces facing the inner peripheral side surface of the globe, and an internal reflection surface for totally reflecting light incident from the light-incident surfaces toward the light-emitting surfaces, the light-incident surfaces and the light-emitting surfaces being alternately arranged in a stepwise manner on an outer peripheral surface of the light-guiding member in the optical axis direction, the internal reflection surface constituting a back surface of the inner peripheral surface of the light-guiding member, and the light-guiding member, the support member, and the elastic claw being integrally formed of a single material.
In this configuration, the light from the light emitting element is condensed to the light guide member functioning as the reflecting member in a state where the light diffusion of the light from the light emitting element is suppressed by the light condensing element. Therefore, the light from the light emitting element can be effectively utilized as a display lamp.
The light guide member is provided with a plurality of light incident surfaces and light emitting surfaces, and is alternately arranged in a stepwise manner. Therefore, the thickness of the light guide member can be reduced and the thickness difference caused by the difference in the positions of the light guide member can be reduced, as compared with the case where a single light incident surface and a single light emitting surface are provided in the light guide member. Therefore, the light guide member can be made lightweight, and is less susceptible to vibrations, and the moldability of the light guide member can be improved.
In addition, the unitized light guide member, the support member, and the elastic claw are integrally attached to the globe at the time of assembly. When the elastic claw is mounted, the elastic claw is elastically deformed, so that the elastic claw can be easily locked to the locking portion, and the assembling property can be improved.
Drawings
Fig. 1 is a perspective view showing the appearance of a display lamp according to a first embodiment of the present invention.
Fig. 2 is an exploded perspective view showing a lamp.
Fig. 3 (a) is a cross-sectional view showing a lamp, and fig. 3 (b) is a cross-sectional view showing a structure of the periphery of the connection mechanism.
Fig. 4 is a top view of a substrate.
Fig. 5 is a perspective view of the base member.
Fig. 6 (a) is a top view of the base member, and fig. 6 (b) is a cross-sectional view of the base member.
Fig. 7 is a perspective view of the base member with the substrate mounted.
Fig. 8 (a) is a cross-sectional view of the lamp housing, and fig. 8 (b) is a bottom view of the lamp housing.
Fig. 9 is a perspective view of a first unit having a light guide member, a support member, and an elastic claw.
Fig. 10 (a) is a top view of the first unit, and fig. 10 (b) is a cross-sectional view of the first unit.
Fig. 11 is a perspective cross-sectional view of a second unit including a lamp housing and a first unit mounted on the lamp housing.
Fig. 12 is an enlarged perspective view of a main portion of the elastic claw.
Fig. 13 is an enlarged perspective cross-sectional view of the structure of the periphery of the connection mechanism, and corresponds to an enlarged view of a part of fig. 11.
Fig. 14 is a schematic view of the structure of the periphery of the locking recess.
Fig. 15 (a) is a schematic cross-sectional view of the structure around the connection mechanism, showing a state in the middle of the connection operation. Fig. 15 (b) is a schematic cross-sectional view of the structure around the connection mechanism, showing the connection state of the connection mechanism.
Fig. 16 is a cross-sectional view of the structure of the periphery of the connection mechanism in the second embodiment of the present invention, showing the connection state of the connection mechanism.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the drawings.
(first embodiment)
Fig. 1 is a side view of a display lamp according to a first embodiment of the present invention, fig. 2 is an exploded perspective view of the display lamp, fig. 3 (a) is a cross-sectional view of the display lamp, and fig. 3 (b) is a cross-sectional view of a structure of a periphery of a connection mechanism.
Referring to fig. 1 to 3 (a) and (b), the display lamp 1 includes: a base member 2, a translucent cover 3, a substrate 5 on which the light emitting element 4 is mounted, a light guide member 60 serving also as a reflecting member 6, a supporting member 7, and a connection mechanism 8.
The base member 2 and the globe 3 are combined with each other to constitute a hollow housing K. The substrate 5, the light guide member 60, and the support member 7 are housed in the case K. The base plate 5 is fixed on the base member 2. The base member 2 is disposed on one end side in the optical axis direction L of the light emitting element 4, and the globe 3 is disposed on the other end side in the optical axis direction L.
As shown in fig. 2, the light guide member 60, the support member 7, and the elastic claw 70, which are part of the connection mechanism 8, constitute a first unit U1 integrally formed of a single material (a resin material having light transmittance).
The connection mechanism 8 connects the support member 7 to the lamp housing 3, thereby attaching the light guide member 60 to the lamp housing 3 (see fig. 11). As shown in (a) of fig. 3, the second unit U2 is formed by the first unit U1 and the lamp housing 3 mounted to each other. The second unit U2 constitutes a subassembly that can be integrally mounted with respect to the base member 2.
Next, the substrate 5 will be described. Fig. 4 is a plan view of the substrate 5.
As shown in fig. 2 and 4, the substrate 5 includes a surface 5a, another surface 5b, and a peripheral surface 5c. The base plate 5 has a center hole 51, a pair of screw insertion holes 52, a pair of positioning recesses 53, and a pair of escape recesses 54, 55.
The center hole 51 and each screw insertion hole 52 are circular holes penetrating the one surface 5a and the other surface 5b. Mounting screws 11 (see fig. 7) for mounting the substrate 5 to the base member 2 are inserted through the respective screw insertion holes 52.
On one surface 5a of the substrate 5, a plurality of light emitting elements 4 and a terminal block 9 are mounted. The plurality of light emitting elements 4 are arranged so as to surround the periphery of the center hole 51 of the substrate 5. Specifically, the plurality of light emitting elements 4 are arranged at equal intervals in the circumferential direction on the circumference of a circle concentric with the center hole 51. The optical axis direction L of each light emitting element 4 is, for example, a direction orthogonal to the one surface 5a of the substrate 5. The light emitting element 4 may be a chip type LED or a shell type LED.
The terminal block 9 includes a terminal block main body 92 formed with an external wiring insertion hole 91, and a terminal (not shown) supported by the terminal block main body 92. The terminals perform a function of connecting external wiring (not shown) which is drawn into the housing K through the center hole 51 of the substrate 5 and inserted into the external wiring insertion hole 91.
A pair of positioning recesses 53 are formed on the peripheral side surface 5c, for example, at positions facing each other across the center hole 51. The positioning recess 53 engages with a positioning rib 26 (see fig. 7) of the base member 2, which will be described later, and functions to position the substrate 5 with respect to the base member 2 in the circumferential direction of the center hole 51. The pair of escape recesses 54 and 55 are escape portions for avoiding interference with a pair of surrounding ribs 29 (see fig. 7) of the base member 2, which will be described later.
Next, the base member 2 will be described. Fig. 5 is a perspective view of the base member 2. Fig. 6 (a) is a top view of the base member 2. Fig. 6 (b) is a cross-sectional view of the base member 2, corresponding to the VIB-VIB cross-sectional view of fig. 6 (a). Fig. 7 is a perspective view of the base member 2 with the substrate 5 mounted thereon.
As shown in fig. 5 to 7, the base member 2 includes a cylindrical peripheral wall 21, a disk-shaped bottom wall 22, a pair of screw bosses 23 for mounting a substrate, receiving ribs 24 and 25, a positioning rib 26, a screw boss 27 for mounting a cable connector, a pair of screw insertion hole forming portions 28, and a pair of surrounding ribs 29.
A concave shape which is opened upward is formed by the peripheral side wall 21 and the bottom wall 22. The concave open end 2e (corresponding to the upper end of the peripheral wall 21) is connected to a concave open end 3e (see fig. 3a and 8 a) of the globe 3, which will be described later.
The receiving ribs 24, 25 and the positioning rib 26 are formed protruding from the upper surface 22a of the bottom wall 22. The receiving rib 24 and the positioning rib 26 are connected to the inner peripheral surface 21a of the peripheral wall 21.
The screw boss 23 and the screw boss 27 are cylindrical protrusions protruding upward from the upper surface 22a of the bottom wall 22. On the inner peripheral surface of the screw boss 23, a screw 23a is formed. On the inner peripheral surface of the screw boss 27, a screw 27a is formed. The upper end surface 23b of the screw boss 23 and the upper end surface 27b of the screw boss 27 receive the other surface 5b of the substrate 5. In addition, the receiving ribs 24, 25 receive the other surface 5b of the substrate 5.
In a state where the base plate 5 is received by the screw bosses 23, 27 and the receiving ribs 24, 25, the mounting screw 11 (refer to fig. 7) is inserted through the screw insertion hole 52 of the base plate 5 and screwed into the screw boss 23, whereby the base plate 5 is fixed to the base member 2.
As shown in fig. 7, at the time of assembly, the positioning rib 26 engages with the corresponding positioning recess 53 of the base plate 5, thereby realizing a function of positioning the base plate 5 with respect to the base member 2 in the circumferential direction of the center hole 51.
The screw boss 27 shown in (a) and (b) of fig. 6 forms a predetermined portion 28 with the screw insertion hole, and is used when the base member 2 is mounted on a mounting object.
Specifically, for example, in the case of using a frame of a machine as an installation target, a screw insertion hole (not shown) is formed in the screw insertion hole forming portion 28, and the base member 2 is screwed to the frame of the machine using an installation screw (not shown) that penetrates the formed screw insertion hole. At this time, a cable connector (not shown) is attached to the screw boss 27, and the external wiring is guided into the housing K through the cable connector.
The screw insertion hole in the predetermined portion 28 is formed using a tool such as a drill bit or a drill. A small diameter center hole 28a is provided in the screw insertion hole forming portion 28. The center hole 28a allows positioning of a drill or a drill, thereby improving operability.
The surrounding rib 29 surrounds the screw insertion hole forming predetermined portion 28 together with a part of the peripheral side wall 21. The surrounding rib 29 is formed in a U-shape in a plan view. A pair of end portions of the surrounding rib 29 are connected to the inner peripheral surface 21a of the peripheral side wall 21. When the screw insertion hole is formed in the screw insertion hole forming scheduled portion 28, the inner space surrounding the rib 29 serves as a working space for a tool (a drill bit or a drill bit). Thus, operability is improved.
As shown in (b) of fig. 6, a first embedded portion 41 and a second embedded portion 42 are provided at an upper open end 2e of the base member 2. The first embedded portion 41 is disposed below the second embedded portion 42 in the optical axis direction L. The first embedded portion 41 of the base member 2 has a smaller diameter in the peripheral side wall 21 than a portion below the first embedded portion 41. The second embedded portion 42 has a smaller diameter than the first embedded portion 41. The first and second fitting portions 41 and 42 of the base member 2 are fitted into first and second fitting portions 35 and 36 of the globe 3, which will be described later.
An outer peripheral groove 41a is formed in the first fitting portion 41 of the base member 2. A sealing member 12 such as an O-ring for sealing between the base member 2 and the globe 3 is accommodated in the outer peripheral groove 41a. In the second embedded portion 42 of the base member 2, a plurality of locking projections 42a are formed radially outward. The plurality of locking projections 42a are arranged at equal intervals in the circumferential direction.
Next, the globe 3 will be described. Fig. 8 (a) is a cross-sectional view of the lamp housing 3, and fig. 8 (b) is a bottom view of the lamp housing 3. FIG. 8 (a) corresponds to FIG. 8a cross-sectional view of VIIIA-VIIIA of (b).
As shown in fig. 8 (a), the globe 3 includes a peripheral side wall 31 and a top wall 32. The diameter of the peripheral side wall 31 gradually decreases toward the top wall 32 side. The top wall 32 is formed in a dome shape.
The globe 3 is formed in a concave shape by the peripheral side wall 31 and the top wall 32. The concave open end 3e (corresponding to the lower end 31a of the peripheral side wall 31) is connected to the open end 2e of the base member 2. A first fitting portion 35 and a second fitting portion 36 are provided at the lower open end 3e of the globe 3. The first fitting portion 35 is disposed below the second fitting portion 36 in the optical axis direction L.
As shown in fig. 3 (a), the first outer fitting portion 35 of the lamp housing 3 is fitted to the outer side of the first inner fitting portion 41 of the base member 2, and the second outer fitting portion 36 of the lamp housing 3 is fitted to the outer side of the second inner fitting portion 42 of the base member 2, whereby the base member 2 and the lamp housing 3 are connected to each other. The space between the first externally fitted portion 35 and the first internally fitted portion 41 of the base member 2 is sealed by the sealing member 12 received in the outer peripheral groove 41a of the first internally fitted portion 41 of the base member 2.
As shown in fig. 8 (a), as the surface members, the globe 3 includes an outer peripheral side surface 3a (corresponding to the outer peripheral side surface of the peripheral side wall 31), an inner peripheral side surface 3b (corresponding to the outer peripheral side surface of the peripheral side wall 31), an outer upper surface 3c (corresponding to the outer surface of the top wall 32), and an inner upper surface 3d (corresponding to the inner surface of the top wall 32). On the inner peripheral side surface 3b of the globe 3, a lens cutting portion 34 is formed, the lens cutting portion 34 being an irradiated portion irradiated with light reflected from the reflecting member 6. The lens cutting portion 34 includes a plurality of vertical ribs 34a having a semicircular cross section, and the plurality of vertical ribs 34a extend in the vertical direction and are arranged at equal intervals in the circumferential direction C of the globe 3.
The second outer fitting portion 36 is formed with a guide groove 37 extending upward from the first outer fitting portion 35, and a locking groove 38 extending from the upper end of the guide groove 37 to one side C1 in the circumferential direction C.
One side C1 in the circumferential direction C corresponds to the opposite direction of the tightening direction of the globe 3 with respect to the base member 2. When the globe 3 is attached to the base member 2, the base member 2 and the globe 3 are relatively displaced in the up-down direction in a state in which the locking protrusion 42a of the base member 2 and the guide groove 37 of the globe 3 are aligned in the circumferential direction C. Thereby, the locking projection 42a is inserted into the guide groove 37.
Thereafter, the globe 3 is rotated to the other side C2 (fastening direction) of the circumferential direction C with respect to the base member 2. Thereby, the locking protrusion 42a of the base member 2 is fitted into the locking groove 38 to be locked. Thereby, locking of the base member 2 and the globe 3 is achieved.
In the inner peripheral side surface 3b of the globe 3, a support portion Q for supporting the first unit U1 is arranged above the locking groove 38. The support portion Q is formed with a locking recess 80, and the locking recess 80 serves as a locking portion that is a part of the connection mechanism 8.
In addition, in the inner peripheral side surface 3b of the globe 3, a guide protrusion 39 is formed adjacent to a lower side of the locking concave portion 80. When the first unit U1 is attached to the globe 3, the guide projection 39 guides the elastic claw 70, which is a part of the connection mechanism 8, to be locked in the locking recess 80.
Next, the first unit U1 including the light guide member 60, the support member 7, and a part (elastic claw 70) of the connection mechanism 8, which also serve as the reflecting member 6, will be described. Fig. 9 is a perspective view of the first unit U1. Fig. 10 (a) is a plan view of the first unit U1. Fig. 10 (b) is a cross-sectional view of the first unit U1, which corresponds to the XB-XB cross-sectional view of fig. 10 (a). Fig. 11 is a perspective sectional view of the second unit U2 including the lamp housing 3 and the first unit U1.
As shown in fig. 9 and 10 (b), the support member 7 extends from an end 60e of the light guide member 60 on the base member 2 side in the optical axis direction L toward the inner peripheral side surface 3b side of the globe 3 (see fig. 11).
The support member 7 is a disk-shaped member including a first surface 7a on the light guide member 60 side, a second surface 7b on the base member 2 side, and an outer edge 7c facing the inner peripheral side surface 3b of the globe 3. The support member 7 supports the light guide member 60 in a state where the central portion of the first surface 7a of the support member 7 is connected to the light guide member 60.
The support member 7 includes a condensing element. Specifically, as shown in fig. 10 (b) and 11, the light condensing element is a convex lens 7d, the surface of which on the light guide member 60 side is a flat surface, and the convex surface faces the light emitting element 4 side. The convex lens 7d as a condensing element suppresses divergence of light irradiated from the light emitting element 4. Specifically, the convex lens 7d suppresses light diffusion so that the light from the light emitting element 4 does not directly strike the inner peripheral side surface 3b of the globe 3.
As shown in fig. 10 (b), the light guide member 60 serving also as the reflecting member 6 is a cylindrical member having a central axis P1 parallel to the optical axis direction L, and the diameter of the light guide member 60 decreases toward the support member 7 side. The central axis P1 of the light guide member 60 coincides with the central axis P2 of the support member 7. The light guide member 60 has an outer peripheral surface 60a, an inner peripheral surface 60b, an open end 60c, the end 60e as a closed end, a plurality of light incident surfaces 61, a plurality of light emitting surfaces 62, and an internal reflection surface 63.
As shown in fig. 11, a gap S having a gap amount S1 in the optical axis direction L is formed between an upper end surface 60d, which is an end surface of the open end 60c of the light guide member 60, and the inner upper surface 3d of the globe 3.
As shown in fig. 3 (a) and 10 (b), the light incident surface 61 faces the light emitting element 4 through the convex lens 7 d. The light exit surface 62 faces the inner peripheral side surface 3b of the globe 3. The light incident surface 61 and the light emitting surface 62 are alternately arranged in a stepwise manner on the outer peripheral surface 60a of the light guide member 60 in the optical axis direction L.
The internal reflection surface 63 constitutes a back surface of at least a part of the inner peripheral surface 60b of the light guide member 60. The internal reflection surface 63 totally reflects the light incident from the light incident surface 61 toward the light exit surface 62.
The internal reflection surface 63 includes a paraboloid of revolution in which the parabola of the light emitting element 4 disposed at the focal point is rotated about the central axis P1 of the light guide member 60.
The plurality of light incident surfaces 61 include a refractive surface (optical refractive element) that refracts and enters light from the light emitting element 4 via the convex lens 7d (light collecting element) in a direction close to parallel to the optical axis direction L. Specifically, the plurality of light incident surfaces 61 include refractive surfaces, and the inclination angle (cut angle) of the refractive surfaces with respect to a horizontal plane (reference plane) orthogonal to the optical axis of the convex lens 7d is smaller as the inclination angle increases with respect to the light incident surface 61 on the lower side and the light incident surface 61 on the upper side.
The light incident surface 61 including the refractive surface allows the reflected light from the internal reflection surface 63, i.e., the paraboloid of revolution, to be more nearly parallel light to the outside. The refractive surface (optical refractive element) of the light incident surface 61 may be a concave lens.
The plurality of light emitting surfaces 62 include a refractive surface (optical refractive element) that refracts and emits light from the internal reflection surface 63 so as to be biased in a predetermined direction. Specifically, the light exit surface 62 disposed on the lower side (base member 2 side) of the central portion in the optical axis direction L includes a refractive surface inclined upward with respect to the optical axis direction L. Of the light emission surfaces 62 disposed on the lower side (base member 2 side) of the central portion in the optical axis direction L, the inclination angle (chamfer angle) with respect to the optical axis direction L increases as the lower side of the light emission surface 62.
The light exit surface 62 disposed above the central portion in the optical axis direction L includes a refractive surface inclined downward. Of the light emission surfaces 62 disposed above the central portion in the optical axis direction L, the inclination angle (chamfer angle) with respect to the optical axis direction L increases as the light emission surface 62 is disposed above. The light exit surface 62 disposed at the center in the optical axis direction L extends along the optical axis direction L.
The light is deflected toward the central portion of the optical axis direction L of the inner peripheral side surface 3b of the lamp housing 3 by the light exit surface 62 including the refractive surface. This makes the central portion of the globe 3 in the optical axis direction L brighter, thereby improving the visibility of the display lamp 1.
Next, the connection mechanism 8 will be described with reference to fig. 3 (b), 8 (a), and 9 to 15. Fig. 12 is a schematic perspective view of a main portion of the elastic claw of the connection mechanism 8. Fig. 13 is an enlarged perspective cross-sectional view of the structure of the periphery of the connection mechanism 8, and corresponds to an enlarged view of a part of fig. 11.
As shown in fig. 3 (b) and 11, the connection mechanism 8 includes: elastic claws 70 extending from an outer edge 7c of the support member 7 toward the inner peripheral side surface 3b of the globe 3; and a locking concave portion 80 as a locking portion provided on a support portion Q disposed on the inner peripheral side surface 3b of the globe 3.
As shown in fig. 8 (a), on the inner peripheral side surface 3b of the globe 3, the support portion Q of the globe 3 is arranged at a position closer to the base member 2 than the lens cutting portion 34, which is the portion to be irradiated, in the optical axis direction L. The support portion Q is disposed on the base member 2 side of the outer edge 7c of the support member 7 in the optical axis direction L. The support portion Q and the guide projection 39 are disposed closer to the top wall 32 than the second fitting portion 36 of the globe 3.
As shown in fig. 3 (b), 9 and 10 (a), the elastic claw 70 includes a base end portion 71, an extended end portion 72 and an inclined portion 73. The base end portion 71 is connected to the outer edge 7c of the support member 7. The extension end portion 72 is disposed on the opposite side of the base end portion 71. The extended end portion 72 is disposed further radially outward of the support member 7 than the base end portion 71. The extended end portion 72 is locked by the locking concave portion 80 of the globe 3.
As shown in fig. 11, the extension end 72 includes an upper surface 72a, a lower surface 72b, a pair of side surfaces 72c, 72d, and an extension end surface 72e. The upper surface 72a and the lower surface 72b are planes orthogonal to the optical axis direction L. The pair of side surfaces 72d, 72d are arranged on opposite sides of the circumferential direction C to each other, and connect the upper surface 72a with the lower surface 72 b. The extended end surface 72e is formed by an inclined surface on the light guide member 60 side inclined with respect to the optical axis direction L and oriented in the optical axis direction L.
As shown in fig. 10 (b) and 13, the inclined portion 73 is inclined with respect to the optical axis direction L, and connects the base end portion 71 and the extended end portion 72. The inclined portion 73 is formed with a weight reduction portion constituted by a through hole, for example.
Fig. 14 is a schematic view of the structure of the periphery of the locking concave portion 80. As shown in fig. 14, the inner surface of the locking concave portion 80 includes: a first surface 81 on the top wall 32 side facing the optical axis direction L, a second surface 82 on the opening end 3e side facing the optical axis direction L, third and fourth surfaces 83 and 84 facing each other in the circumferential direction C, and a fifth surface 85 as a bottom surface inclined downward with respect to the optical axis direction L. The guide projection 39 includes an upper surface 39a, a lower surface 39b, and a pair of guide surfaces 39c, 39d.
The first surface 81 of the locking recess 80 is formed by a recess provided on the upper surface 39a of the guide projection 39. The pair of guide surfaces 39C, 39d are arranged on both sides of the lower surface 39b of the guide projection 39 in the circumferential direction C, facing each other in the circumferential direction C. The pair of guide surfaces 39c, 39d are inclined opposite to each other with respect to the optical axis direction L.
When the first unit U1 is mounted on the lamp housing 3, if the first unit U1, which is accommodated in the lamp housing 3 and temporarily positioned, is pushed toward the top wall 32 side in the optical axis direction L, the pair of side surfaces 72C, 72d (see fig. 11) of the extended setting end portion 72 of the elastic claw 70 are guided by the pair of guide surfaces 39C, 39d (see fig. 14) of the guide projection 39, whereby the extended setting end portion 72 of the elastic claw 70 is positioned at the same position in the circumferential direction C as the locking concave portion 80.
In this state, when the first unit U1 is pushed further toward the top wall 32 side in the optical axis direction L, as shown in fig. 15 (a), the inclined extension end surface 72e of the extension end 72 of the elastic claw 70 is elastically deflected by the downward reaction force F received from the guide projection 39.
Next, as shown in fig. 15 (b), the inclined extension end surface 72e of the extension end 72 of the elastic claw 70 passes over the guide projection 39, and the extension end 72 is inserted into the locking recess 80. At this time, the inclined extending end surface 72e of the elastic claw 70 elastically presses the fifth surface 85 along the fifth surface 85 which is the bottom surface of the locking concave portion 80. Therefore, by the obliquely downward reaction force G received by the extension end surface 72e from the fifth surface 85, the lower surface 72b of the extension end portion 72 of the elastic claw 70 is pressed so as to follow the first surface 81, which is the inner lower surface of the locking concave portion 80.
Therefore, the first unit U1 can be positioned with high accuracy in the optical axis direction L with respect to the globe 3 by the connection mechanism 8, and the holding force of the positioning can be improved.
In this way, in a state where the first unit U1 is positioned with high accuracy in the optical axis direction L, a minute gap S is formed between the upper end surface 60d of the light guide member 60 of the first unit U1 and the portion of the inner upper surface 3d of the globe 3 facing each other. Therefore, in the resin-formed globe 3 and the first unit U1, excessive dimensional accuracy is not required. Therefore, the manufacturing cost can be reduced.
In addition, when the display lamp 1 receives some impact or the like, the gap S disappears, and the upper end surface 60d of the light guide member 60 of the first unit U1 abuts against the portion of the inner upper surface 3d of the globe 3, thereby restricting the movement of the first unit U1.
The third surface 83 and the fourth surface 84 of the locking concave portion 80 shown in fig. 14 abut against the corresponding side surfaces 72C, 72d of the extended setting end portion 72 of the elastic claw 70, thereby positioning the elastic claw 70 in the circumferential direction C with respect to the globe 3.
In the present embodiment, the following effects are achieved. That is, the reflecting member 6 is mounted on the globe 3 via the supporting member 7 by the connecting mechanism 8 including the elastic claw 70 and the locking concave portion 80. The connection mechanism 8 connects the outer edge 7c of the support member 7 to the support portion Q disposed on the inner peripheral side surface 3b of the globe 3, and the support member 7 is disposed on the base member 2 side of the reflection member 6 in the optical axis direction L. Therefore, as shown in (b) of fig. 3, the connection mechanism 8 can be suppressed from interfering with the optical path M from the light emitting element 4 to the inner peripheral side surface 3b of the globe 3 via the reflecting member 6. Thus, bright display can be performed.
In particular, the support portion Q of the globe 3 is disposed on the base member 2 side of the outer edge 7c of the support member 7 in the optical axis direction L. Therefore, the connection mechanism 8 does not interfere with the optical path M from the light emitting element 4 to the inner peripheral side surface 3b of the globe 3 via the reflecting member 6. Thus, bright display can be performed.
The elastic claw 70 includes an inclined portion 73 that connects the base end portion 71 and the extension end portion 72 and is inclined with respect to the optical axis direction L. Therefore, the elastic claw 70 is elastically deformed to change the inclination angle of the inclined portion 73 with respect to the optical axis direction L, and thereby the impact applied to the reflecting member 6 and the supporting member 7 can be reduced. Therefore, the reflecting member 6 can be stably supported. Further, since the inclined portions 73 are provided in the elastic claws 70, a sufficient amount of elastic deformation of the elastic claws 70 can be ensured without increasing the diameter of the globe 3.
In addition, on the inner peripheral side surface 3b of the globe 3, the support portion Q is arranged at a position closer to the base member 2 than the lens cutting portion 34, which is an irradiated portion irradiated with light from the light exit surface 62, in the optical axis direction L. Therefore, the support portion Q of the inner peripheral side surface 3b of the translucent globe 3 does not impair the aesthetic appearance of the globe 3.
In addition, the support member 7 includes a condensing element (convex lens 7 d). Therefore, in a state where the light from the light emitting element 4 is suppressed from diffusing by the light condensing element, the light from the light emitting element 4 is condensed to the light guide member 60 functioning as the reflecting member 6. Therefore, as the display lamp 1, light from the light emitting element 4 can be effectively utilized.
As shown in fig. 10 (b), the light guide member 60 serving also as the reflecting member 6 is a tapered tubular member having a central axis P1 parallel to the optical axis direction L of the light emitting element 4, and the diameter of the light guide member 60 decreases toward the supporting member 7, and the light guide member 60 includes a plurality of light incident surfaces 61, a plurality of light emitting surfaces 62, and an internal reflecting surface 63. The light incident surface 61 and the light emitting surface 62 are alternately arranged in a stepwise manner on the outer peripheral surface 60a of the light guide member 60 in the optical axis direction L.
Therefore, the thickness of the light guide member 60 can be reduced and the thickness difference caused by the difference in the positions of the light guide member 60 can be reduced, as compared with the case where a single light incident surface and a single light emitting surface are provided on the light guide member 60. Therefore, the light guide member 60 can be reduced in weight, and is less susceptible to vibrations, and the moldability of the light guide member 60 can be improved.
In addition, the light guide member 60, the support member 7, and the elastic claw 70 are integrally formed of a single material. Therefore, at the time of assembly, as the first unit U1, the unitized light guide member 60, the support member 7, and the elastic claw 70 are integrally mounted on the globe 3. When the first unit U1 is attached to the globe 3, the elastic claws 70 are elastically deformed, so that the elastic claws 70 can be easily locked in the locking recesses 80, thereby improving the assembling property.
(second embodiment)
Fig. 16 is a schematic cross-sectional view showing the configuration of the periphery of the connection mechanism 8T in the display lamp according to the second embodiment of the present invention.
As shown in fig. 16, the connection mechanism 8T includes: an elastic claw 70T extending from a support portion Q arranged on the inner peripheral side surface 3b of the globe 3; and an engagement recess 80T as an engagement portion formed at the outer edge 7c of the support member 7 of the first unit U1. The support portion Q is disposed further toward the base member 2 (lower side) than the outer edge 7c of the support member 7 in the optical axis direction L.
The elastic claw 70T includes a base end portion 71T, an extended end portion 72T, and an inclined portion 73T. The base end portion 71T is connected to the support portion Q. The extension end 72T is locked in the locking recess 80T. The inclined portion 73T is inclined with respect to the optical axis direction L, and connects the base end portion 71T and the extended end portion 72T.
The extension end face 72Te of the extension end portion 72T is inclined downward. Further, the fifth surface 85T, which is the bottom surface of the locking concave portion 80T, is inclined upward. The extension end surface 72Te is elastically pressed along the fifth surface 85T (bottom surface) of the locking concave portion 80T. Therefore, the upper surface 72Ta of the extension end portion 72T is pressed by the second surface 82T, which is the inner upper surface of the locking concave portion 80T. Therefore, the first unit U1 is positioned with high accuracy in the optical axis direction L with respect to the lamp housing 3, and the holding force of the positioning can be improved.
In the present embodiment, the connection mechanism 8T can be suppressed from interfering with the optical path M from the light emitting element 4 to the inner peripheral side surface 3b of the globe 3 via the reflecting member 6. Thus, bright display can be performed.
In addition, by elastic deformation of the elastic claw 70T having the inclined portion 73T, the impact applied to the unit U1 including the reflecting member 6 can be reduced, and the reflecting member 6 can be stably supported. Further, since the inclined portion 73T is provided in the elastic claw 70T, it is possible to ensure a sufficient amount of elastic deformation of the elastic claw 70T without increasing the diameter of the globe 3.
The invention is not limited to the embodiments described. For example, although not shown, the support portion Q may be disposed outside the support member 7 as long as the support portion Q is located closer to the base member 2 than the lens cutting portion 34 as the irradiated portion in the optical axis direction L. In short, the coupling mechanisms 8 and 8T can be suppressed from interfering with the optical path M.
In addition, a unique positioning recess 53 may be provided on the base plate 5, and a unique positioning rib 26 may be provided on the base member 2. Thus, as shown in fig. 4, when the pair of screw insertion holes 52 of the substrate 5 are disposed at asymmetric positions with respect to the center of the center hole 51, erroneous assembly of the substrate 5 can be prevented. Thus, the workability of assembly is improved.
While the present invention has been described in detail with reference to specific embodiments, those skilled in the art who have the understanding of the foregoing will readily recognize modifications, changes, and equivalents of the embodiments. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
Description of the reference numerals
1: a display lamp,
2: a base member,
2e: an open end,
3: a lampshade(s),
3b: an inner peripheral side surface,
3e: an open end,
4: a light-emitting element,
5: a substrate (substrate),
5a: a surface (a),
5b: another surface is provided with,
6: a reflecting member,
7. 7T: a supporting member,
7a: a first surface,
7b: a second surface,
7c: an outer edge,
7d: a convex lens (light-gathering element),
8. 8T: a connecting mechanism,
21: peripheral wall,
22: a top wall,
31: peripheral wall,
32: a top wall,
34: a lens cutting part (irradiated part),
35: a first external embedded part,
36: a second external embedding part,
41: a first embedded part,
42: a second embedded part,
60: a light guide member,
60a: an outer peripheral surface,
60b: an inner peripheral surface,
61: a light incident surface,
62: a light emitting surface,
63: an internal reflection surface,
70. 70T: an elastic claw,
71. 71T: a base end part,
72. 72T: an extending end part,
73. 73T: an inclined part,
80. 80T: a locking concave part (locking part),
L: an optical axis direction,
M: an optical path,
P1: a central shaft,
Q: a supporting part,
U1: a first unit,
U2: and a second unit.
Claims (5)
1. A display lamp, comprising:
a substrate having a light emitting element supported on one surface,
a base member disposed on one end side of the light emitting element in the optical axis direction and supporting the other surface of the substrate,
a lamp housing having a light-transmitting property, disposed at the other end side in the optical axis direction, formed in a concave shape, an opening end of the concave shape being connected to the base member,
a reflecting member disposed in an inner space of the lamp housing to reflect light emitted from the light emitting element toward an inner peripheral side surface of the lamp housing,
a support member that supports the reflecting member, extends from an end portion of the reflecting member on the base member side in the optical axis direction toward the inner peripheral side surface of the lamp housing, has an outer side edge facing the inner peripheral side surface of the lamp housing, includes a condensing element that suppresses divergence of light irradiated from the light emitting element, and
a connection mechanism that connects the outer edge of the support member with a support portion arranged on the inner peripheral side surface of the globe;
the connecting mechanism comprises an elastic claw and a clamping part,
the elastic claw is extended from one of the outer edge of the supporting member and the supporting portion of the lamp housing to the other,
the locking portion is provided on the other of the outer edge of the support member and the support portion of the globe, and locks an extended end portion of the elastic claw.
2. The display lamp of claim 1, wherein the display lamp is configured to display the display light,
the support portion is disposed on the base member side with respect to the outer edge in the optical axis direction.
3. The display lamp according to claim 1 or 2, wherein,
the elastic claw includes: the extension is provided with an end portion,
a base end portion disposed on the opposite side of the extension end portion, and
and an inclined portion connecting the extended end portion and the base end portion and inclined with respect to the optical axis direction.
4. The display lamp according to claim 1 or 2, wherein,
the inner peripheral side surface of the lamp housing includes a lens cutting portion that diffuses light from the reflecting member,
the support portion is disposed at a position closer to the base member than the lens cutting portion in the optical axis direction.
5. The display lamp according to claim 1 or 2, wherein,
the reflecting member is a tapered cylindrical light guiding member having a central axis parallel to the optical axis direction, and the diameter of the reflecting member decreases toward the supporting member side,
the light guide member includes:
a plurality of light incident surfaces facing the light emitting element through the light collecting element,
a plurality of light exit surfaces facing the inner peripheral side surface of the lamp housing, an
An internal reflection surface for totally reflecting the light incident from the light incident surface toward the light emitting surface,
the light incident surface and the light emitting surface are alternately arranged in a stepwise manner on the outer peripheral surface of the light guide member in the optical axis direction,
the internal reflection surface constitutes a back surface of the inner peripheral surface of the light guide member,
the light guide member, the support member, and the elastic claw are integrally formed of a single material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/040565 WO2020090047A1 (en) | 2018-10-31 | 2018-10-31 | Indicating lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111480031A CN111480031A (en) | 2020-07-31 |
| CN111480031B true CN111480031B (en) | 2024-03-26 |
Family
ID=70462890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880079945.3A Active CN111480031B (en) | 2018-10-31 | 2018-10-31 | Display lamp |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6823822B2 (en) |
| KR (1) | KR102453518B1 (en) |
| CN (1) | CN111480031B (en) |
| WO (1) | WO2020090047A1 (en) |
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Also Published As
| Publication number | Publication date |
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| JP6823822B2 (en) | 2021-02-03 |
| JPWO2020090047A1 (en) | 2021-02-15 |
| KR20210039979A (en) | 2021-04-12 |
| CN111480031A (en) | 2020-07-31 |
| KR102453518B1 (en) | 2022-10-12 |
| WO2020090047A1 (en) | 2020-05-07 |
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