JP4185837B2 - Marker lamp and light source unit - Google Patents

Description

The present invention, as manifest label vehicle width of large vehicles such as large trucks, or as a decoration, relates to a light source unit used in the carrier other markers lamp is attached to the required location and such markers lamp.

  A conventional marker lamp 1 shown in FIG. 15 has a light bulb 4 mounted on a socket 3 arranged at the center of a marker base 2 and the light bulb 4 is covered with a marker cap 5. Although this marker lamp 1 has an advantage that it can be manufactured at a low cost with a simple structure, the power consumption of the light bulb 4 is large. Therefore, when a large number of marker lamps 1 are used at the same time, the burden on the in-vehicle battery becomes too large. There was a problem.

Therefore, in recent years, various marker lamps using light emitting diodes (LEDs) with low power consumption have been developed, and an example thereof is disclosed in Japanese Patent Laid-Open No. 10-31905. As shown in FIG. 16, the marker lamp 6 has LEDs 8a and 8b arranged inside and outside a cylindrical reflector 7, and irradiates the light of the inner LED 8a to the center of the front lens 9, and the outer LED 8b The light is reflected by the conical part of the reflector 7 and irradiated to the side part of the front lens 9 (see Patent Document 1).
JP 10-31905 A

  In the conventional marker lamp 6 (FIG. 16) described in Patent Document 1, light with high directivity emitted from the LED 8b is diffused by the reflector 7, so that high visibility can be obtained. However, since most of the light emitted from the outer LED 8b is reflected by the reflector 7 and applied to the side portion of the front lens 9, in order to ensure the light to be emitted toward the central portion of the front lens 9. The LED 8a had to be arranged inside the reflector 7. For this reason, there is a problem that the structure becomes complicated and the demand for miniaturization cannot be met.

  In addition, since many LEDs 8a cannot be arranged in the narrow space inside the reflector 7, it is difficult to ensure sufficient light to be irradiated to the center portion of the front lens 9, and in particular, There was insufficient light to irradiate the boundary portion A between the side portion and the central portion.

Another object of the present invention can achieve simplification and miniaturization of the structure, moreover, the light source used in the marker lamp and such a marker lamp capable of irradiating a sufficient amount of light in all directions unit Is to provide

The invention as set forth in claim 1,
(1A) Marker base 12 having a socket 28 in the center ,
(1B) the light source unit 16 is detachably mounted to the socket 28, and
(1C) Te marker lamp 10 odor with a light source unit 16 domed markers cap 18 mounted to the marker base 12 so as to cover the,
(1D) The light source unit 16 is
Spinneret 4 6 which inserted detachably into socket 28,
A plurality of light emitting diodes 68 arranged annularly around the ferrule 46, and
Inside the plurality of light emitting diodes 68 arranged in a ring shape, the light emitting diodes 68 are arranged so as to be located on the side surfaces thereof, and formed so that the diameter gradually decreases toward the base 46 side. A conical light reflecting surface 88 that reflects toward the side of the marker cap 18 ;
A light reflecting surface 92 that is formed in a groove shape on the outer peripheral portion of the tip of the conical light reflecting surface 88 and that is inclined so as to approach the central portion toward the larger diameter side of the conical light reflecting surface 88. A reflector 64 having an inner surface and having a light guide path 94 for guiding the light of the light emitting diode 68 to the central portion of the marker cap 18 is provided.
(1F) Marker lamp 10

The invention as set forth in claim 2,
(2A) Marker base 12 having a socket 28 in the center,
(2B) the light source unit 16 detachably attached to the socket 28, and
(2C) In the marker lamp 10 including the dome-shaped marker cap 18 attached to the marker base 12 so as to cover the light source unit 16,
(2D) The light source unit 16 is
A base 46 removably inserted into the socket 28;
A plurality of light emitting diodes 68 arranged in a ring around the base 46, and
Inside the plurality of light emitting diodes 68 arranged in a ring shape, the light emitting diodes 68 are arranged so as to be located on the side surfaces thereof, and formed so that the diameter gradually decreases toward the base 46 side. A hollow conical light reflecting surface 88 that reflects toward the side of the marker cap 18;
The tip of the hollow conical light reflecting surface 88 is divided by a plurality of cutting lines extending in the axial direction, and the tip of each divided piece 111 is widened, and the light from the light emitting diode 68 is sent to the center of the marker cap 18. A reflector 64 having a light guide path 94 leading to
(1F) Marker lamp 10

In the invention described in claim 1 or 2, the light of the light emitting diode 68 is reflected by the light reflecting surface 88 and irradiated to the side portion of the marker cap 18, and is irradiated to the center portion of the marker cap 18 through the light guide path 94. Is done. Therefore, it is not necessary to provide a dedicated light emitting diode 68 for irradiating the central portion of the marker cap 18 inside the reflector 64. In the invention described in claim 1, the light of the light emitting diode 68 can be reflected toward the boundary portion between the side portion and the central portion of the marker cap 18 by the light reflecting surface 92.

The invention as set forth in claim 3,
(3A) a light source unit 16 mounted on the socket 28 of the marker lamp 10 ,
(3B) Cap 46 to be removably inserted into the socket 28 ,
(3C) a plurality of light emitting diodes 68 arranged annularly around the ferrule 46, and
(3D) The plurality of light emitting diodes 68 that are attached to the base 46 and arranged in an annular shape are arranged so that the light emitting diodes 68 are located on the side surfaces, and the diameter gradually decreases toward the base 46 side. is formed, a conical light reflecting surface 88 which reflects radially outward of the imaginary circle C passing through the optical axes B of the plurality of light emitting diodes 68 of light emitting diodes 68,
A light reflecting surface 92 that is formed in a groove shape on the outer peripheral portion of the tip of the conical light reflecting surface 88 and that is inclined so as to approach the central portion toward the larger diameter side of the conical light reflecting surface 88. has an inner surface, the light emitting diode 68 in the axial direction of the virtual circle C, El Bei the reflector 64 and a light guide path 94 leading to a central portion of the marker cap 18,
(3E) Light source unit 16 .

The invention as set forth in claim 4,
(4A) a light source unit 16 mounted on the socket 28 of the marker lamp 10,
(4B) a base 46 that is detachably inserted into the socket 28;
(4C) a plurality of light emitting diodes 68 arranged in a ring around the base 46, and
(4D) The light emitting diode 68 is disposed inside the plurality of light emitting diodes 68 that are attached to the base 46 and arranged in an annular shape, and the diameter gradually decreases toward the base 46 side. A hollow conical light reflecting surface 88 that is formed and reflects the light of the light emitting diodes 68 radially outward of the virtual circle C passing through the optical axes B of the plurality of light emitting diodes 68;
The tip of the hollow conical light reflecting surface 88 is divided by a plurality of cutting lines extending in the axial direction, and the tip of each divided piece 111 is widened, and the light of the light emitting diode 68 is sent in the axial direction of the virtual circle C. And a reflector 64 having a light guide 94 that leads to the center of the marker cap 18.
(4E) The light source unit 16.

In the invention described in claim 3 or 4, when the virtual circle C passing through the optical axis B of the plurality of light emitting diodes 68 is assumed, the light of the light emitting diode 68 is reflected by the light reflecting surface 88 and Irradiating outward in the radial direction and irradiating forward in the axial direction of the virtual circle C through the light guide path 94. Therefore, it is not necessary to provide a dedicated light-emitting diode 68 for irradiating light toward the front of the virtual circle in the axial direction inside the reflector 64. In the invention described in claim 3, the light of the light emitting diode 68 can be reflected in various directions by the light reflecting surface 92.

Claim 5 relates to a modification of the split pieces 111 of the light source unit according to claim 4, to shorten the part of the divided pieces 111, or Ku, characterized in that bent to shape.

  According to the marker lamp of the first and second aspects, the light of the light emitting diode can be reflected by the conical light reflecting surface and irradiated to the side of the marker cap, and the center of the marker cap can be passed through the light guide. Can be irradiated to the part. Therefore, it is not necessary to provide a dedicated light emitting diode for irradiating light toward the center of the marker cap, and the structure can be simplified and the demand for downsizing can be met.

According to a marker lamp of claim 1, thereby reflecting the light from the light emitting diode to the boundary portion between the side and the central portion of the marker cap by another light reflecting surface is a circular conical light reflecting surface Therefore, visibility can be further improved.

According to the light source unit described in claims 3 and 4 , when a virtual circle passing through the optical axes of the plurality of light emitting diodes is assumed, the light of the light emitting diodes is reflected by the conical light reflecting surface to generate the virtual circle. Irradiation can be performed outward in the radial direction, and irradiation can be performed forward in the axial direction of the virtual circle through the light guide path. Therefore, when this light source unit is applied to a marker lamp, there is no need to provide a dedicated light emitting diode for irradiating light to the central portion of the marker cap, and the structure can be simplified and the demand for miniaturization can be met. .

According to the light source unit of the third aspect, the light of the light emitting diode can be reflected in more various directions by the two kinds of light reflecting surfaces. Therefore, when this light source unit is applied to the marker lamp, the visibility is improved. Can be increased.

  Referring to FIG. 1, marker lamps 10 to which the present invention is applied are attached to a necessary number of necessary places such as a loading platform or as a sign indicating a vehicle width of a large vehicle such as a large truck or as a decoration. The marker base 12, the mounting bracket 14, the light source unit 16, the marker cap 18, and the fixing ring 20.

  As shown in FIGS. 1 and 2, the marker base 12 includes a substantially disc-shaped main body 22, a male screw portion 24 is formed on the outer peripheral edge of the main body 22, and a hole 26 is formed in the central portion of the main body 22. Is formed. A cylindrical socket 28 is formed at the center of the upper surface of the main body 22 so as to surround the hole 26. Further, in the vicinity of the middle between the outer peripheral edge and the center of the main body 22, two holes 32 through which the screws 30 are inserted are formed so as to sandwich the holes 26. A coil spring 34 and an electrode plate 36 are disposed inside the socket 28, and one end of a conductive wire 38 inserted through the hole 26 is connected to the electrode plate 36.

  The mounting bracket 14 is for mounting the light source unit 16 to the socket 28. As shown in FIG. 2, the mounting portion 40 disposed above the socket 28 and the marker base from both ends of the mounting portion 40 are provided. 12 includes a leg portion 42 extending toward the upper surface of the twelve portion, and a fixing portion 44 extending in parallel with the mounting plate 40 from the end portion of the leg portion 42. The mounting portion 40 has a hole 48 through which the cap 46 of the light source unit 16 is inserted, a groove 52 through which the locking projection 50 (FIG. 3) of the cap 46 is inserted, and a support projection that supports the side surface of the cap 46. 54 is formed, and the fixing portion 44 is formed with a hole 56 through which the screw 30 (FIG. 1) is inserted.

  Then, the screw 30 (FIG. 1) is inserted into the hole 56 of the mounting bracket 14 and the hole 32 of the marker base 12, and the nut 58 is screwed into the male screw portion 30a protruding to the back side of the marker base 12, thereby The mounting bracket 14 is fixed to the marker base 12. The screw 30 also functions as a fixing means for fixing the marker lamp 10 to a vehicle bed or the like.

  The light source unit 16 is detachably attached to the socket 28, and includes a light source device 60, a base 46, a coupling fitting 62, and a reflector 64, as shown in FIGS.

  As shown in FIG. 3, the light source device 60 includes a donut-shaped substrate 66, and a plurality of light emitting diodes 68 and a resistor 70 for obtaining a current value suitable for the light emitting diodes 68 are provided on the upper surface of the substrate 66. Provided. The light emitting diode 68 and the resistor 70 are connected to each other on the back surface of the substrate 66. The diameter of the imaginary circle C (FIG. 5) passing through the optical axis B (FIG. 1) of each light emitting diode 68 may be set smaller than the maximum diameter of the reflector 64, but the maximum of the reflector 64 as in this embodiment. If it is set to be larger than the diameter, more light from each light emitting diode 68 can be irradiated to the vicinity of the center of the marker cap 18.

  The base 46 is a general-purpose type having the same shape as the base of the light bulb 4 (FIG. 12). As shown in FIGS. 1 and 3, a cylindrical main body 72 inserted into the socket 28, and a main body 72. The electrode 74 (FIG. 1) formed on the lower end of the main body 72 and the locking protrusion 50 formed on the side surface of the main body 72 are included. Then, one electrode of the light source device 60 is connected to the side surface of the main body 72 via the connecting fitting 62, and the other electrode of the light source device 60 is connected to the electrode 74 of the base 46 via a conductive wire (not shown).

  The connection fitting 62 connects the light source device 60 and the base 46, and as shown in FIG. 3, the base attachment portion 76 fixed to the outer surface of the base 46, and the marker base from both ends of the base attachment portion 76. 12 includes a connecting portion 78 extending to the upper surface side, and a substrate attaching portion 80 extending in parallel with the base attaching portion 76 from an end portion of the connecting portion 78. The base attaching portion 76 is formed with a hole 82 through which the base 46 is inserted, a groove 84 through which the locking projection 50 of the base 46 is inserted, and a clamping protrusion 86 that sandwiches the base 46.

  As shown in FIGS. 3 to 7, the reflector 64 includes a solid conical main body 90 formed of a synthetic resin such as ABS resin or other easily moldable material. Is formed with a conical light reflecting surface 88 for reflecting the light of the light emitting diode 68 toward the side of the marker cap 18. That is, on the outer peripheral surface of the main body 90, a strip-shaped polygonal portion 88a having a polygonal cross-sectional shape (24-gon in this embodiment) and a strip-shaped circular portion 88b having a circular cross-sectional shape are alternately formed. The conical light reflecting surface 88 is formed by laminating light reflecting layers such as a chrome plating layer on the surfaces of the polygonal portion 88a and the circular portion 88b.

  Further, as shown in FIG. 7, a plurality of (four in this embodiment) groove-shaped guides for guiding the light of the light emitting diode 68 to the central part of the marker cap 18 are provided on the outer peripheral portion of the tip portion of the main body 90. The light paths 94 are formed in a radial shape, and light reflection surfaces 92 are formed on the inner wall portions of the light guide paths 94. The light reflection surfaces 92 are inclined so as to approach the center as they go to the larger diameter side of the light reflection surfaces 88.

  A cylindrical fitting portion 96 that is fitted to the base 46 protrudes from the center of the small-diameter side end of the main body 90, and the end of the base 46 is received at the base of the fitting portion 96. An annular receiving groove 98 is formed.

  The number of polygons 88a, the number of light guides 94, and the inclination angle of the light reflecting surface 92 are not limited to this embodiment, and can be changed as appropriate.

  When assembling the light source unit 16, as shown in FIG. 3, the base plate 66 of the light source device 60 is joined (bonded or welded) to the base plate mounting portion 80 of the connecting bracket 62, and the base mounting portion of the connecting bracket 62. The base 46 is joined (adhered or welded) to 76. Then, the fitting portion 96 of the reflector 64 is fitted to the end portion of the base 46 and joined (bonded or the like).

  The marker cap 18 covers the light source unit 16 and transmits light from the light emitting diode 68. As shown in FIG. 1, the marker cap 18 has a dome shape formed of a transparent material such as transparent glass or transparent synthetic resin. A cap body 100 is included. An abutment portion 102 that abuts the upper surface of the outer peripheral portion of the marker base 12 is formed at the open end of the cap body 100, and an annular engagement that the fixing ring 20 is engaged with the outer peripheral surface of the open end portion. A protrusion 104 is formed.

  The fixing ring 20 fixes the marker cap 18 with respect to the marker base 12, and includes an annular female screw portion 106 that is screwed into the male screw portion 24 of the marker base 12, as shown in FIG. An annular locking portion 108 that is locked to the locking protrusion 104 of the marker cap 18 is integrally formed at the axial end portion of the female screw portion 106. The locking portion 108 is formed in a tapered shape that decreases in diameter toward the tip, and the minimum inner diameter of the locking portion 108 is set smaller than the maximum outer diameter of the locking protrusion 104.

  Then, in a state where the marker cap 18 is fixed to the marker base 12 using the fixing ring 20, the fixing ring 20 is fixed to the marker base 12 with screws 110.

  When assembling the marker lamp 10, as shown in FIGS. 1 and 2, first, the mounting bracket 14 is fixed to the marker base 12 with screws 30. Then, the light source unit 16 is detachably attached to the socket 28 of the marker base 12, and the marker cap 18 is fixed to the marker base 12 with the fixing ring 20.

  When the light source unit 16 is mounted on the socket 28, the locking projection 50 of the base 46 is positioned correspondingly to the groove 52 of the mounting bracket 14, and the base 46 is inserted into the socket 28 against the bias of the coil spring 34. It ’s crowded. When the locking projection 50 passes through the groove 52, the base 46 is rotated in the circumferential direction and the insertion force is released. Then, the base 46 is pushed back by receiving a force from the coil spring 34, and the locking projection 50 is locked to the inner peripheral portion of the hole 48 in the mounting portion 40.

  When a power supply device (not shown) is connected to the marker lamp 10 and the power switch is turned on, light is emitted from each light emitting diode 68, and a part of the light is imaginary circle C (FIG. 5) by the light reflecting surface 88 of the reflector 64. ) Is reflected outward in the radial direction, and the other part is guided in the axial direction of the virtual circle C (FIG. 5) by the light guide 94. Further, part of the light traveling toward the light guide path 94 is reflected in various directions by the light reflecting surface 92. Thereby, the light emitted from the light emitting diode 68 is sufficiently diffused to ensure high visibility from the outside.

  According to this embodiment, the light of the light emitting diode 68 can be reflected by the light reflecting surface 88 and irradiated to the side portion of the marker cap 18, and can be irradiated to the center portion of the marker cap 18 through the light guide path 94. Furthermore, it can be reflected by the light reflecting surface 92 and irradiated to the boundary portion between the side portion and the center portion of the marker cap 18. That is, the light of the light emitting diode 68 can be sufficiently irradiated in all directions. Therefore, it is not necessary to provide a dedicated light emitting diode for irradiating light toward the central portion of the marker cap 18, the structure can be simplified, the cost can be reduced, and the demand for downsizing can be met.

  Further, since the light source unit 16 is attached to the socket 28 by a general-purpose base 46, compatibility with the light bulb 4 in the conventional marker lamp 1 (FIG. 15) can be obtained. That is, when the light bulb 4 is cut off in the conventional marker lamp 1 (FIG. 15), the light source unit 16 can be used instead of the light bulb 4.

  In the above-described embodiment, the main body 90 of the reflector 64 is formed in a solid conical shape, and the light reflecting surface 88 of the main body 90 is constituted by a polygonal portion 88a and a circular portion 88b. As shown, the main body 90 of the reflector 64 may be formed in a hollow conical shape. For example, as shown in FIG. 9, the light reflecting surface 88 of the main body 90 may be constituted only by a smooth conical surface.

  When the main body 90 is formed in a hollow conical shape, as shown in FIG. 10, the distal end portion of the tubular member is divided by a plurality of cutting lines extending in the axial direction, and the distal end portion of each divided piece 111 is expanded. Accordingly, the conical light reflection surface 88 and the light guide 94 may be configured. In addition, as shown in FIG. 11, the total area of the light guide 94 may be increased by shortening a part of the divided piece 111. Furthermore, as shown in FIG. 12, the total area of the light guide 94 may be enlarged and the light reflecting surface 92 may be secured by bending a part of the divided piece 111 into a “<” shape.

  Further, in the above-described embodiment, the light source device 60 and the base 46 are connected by using the connecting metal fitting 62. For example, as shown in FIG. 13, these are connected by the conductive wire 112 for connecting the electrodes. May be.

  Further, in the above-described embodiment, the socket 28 is formed integrally with the main body 22 of the marker base 12, but as shown in FIG. 14, for example, a cylindrical socket 114 is separately formed of a conductive metal, The socket 114 may be attached to the main body 22 of the marker base 12. In this case, since the locking hole 114a in which the locking projection 50 of the base 46 is locked can be formed on the side wall of the socket 114, the mounting bracket 14 (FIG. 3) can be omitted.

It is sectional drawing which shows the marker lamp to which this invention was applied. It is a perspective view which shows a marker base, a mounting bracket, and a light source unit. It is a disassembled perspective view which shows a light source unit. It is a front view which shows a reflector. It is a top view which shows a reflector. It is a bottom view which shows a reflector. It is the VII-VII sectional view taken on the line in FIG. It is sectional drawing which shows a hollow reflector. It is a front view which shows the reflector which has a conical smooth light reflective surface. It is a perspective view which shows another hollow reflector (what has a division | segmentation piece). It is a perspective view which shows the other hollow reflector (what shortened a part of division | segmentation piece). It is a perspective view which shows the other hollow reflector (what bent some split pieces). It is a perspective view which shows the modification of a light source unit (reflector abbreviation). It is sectional drawing which shows the modification of a socket. It is sectional drawing which shows the conventional light bulb type marker lamp. It is sectional drawing which shows the conventional light emitting diode type marker lamp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Marker lamp 12 ... Marker base 14 ... Mounting bracket 16 ... Light source unit 18 ... Marker cap 28 ... Socket 46 ... Base 60 ... Light source device 62 ... Connecting bracket 64 ... Reflector 68 ... Light emitting diode 88, 92 ... Light reflection surface 94 ... Light guide

Claims (5)

In a marker lamp comprising a marker base having a socket in the center, a light source unit detachably attached to the socket, and a dome-shaped marker cap attached to the marker base so as to cover the light source unit,
The light source unit is
A base removably inserted into the socket;
A plurality of light emitting diodes arranged in a ring around the base, and inside the plurality of light emitting diodes arranged in a ring, the light emitting diodes are arranged on the side surfaces, and on the side of the base The diameter of the light-emitting diode is gradually reduced as it approaches, and a conical light reflecting surface that reflects the light of the light emitting diode toward the side of the marker cap, and a groove in the outer peripheral portion of the tip of the conical light reflecting surface And has a light reflection surface on the inner surface that is inclined so as to approach the center of the cone-shaped light reflection surface toward the larger diameter side of the cone-shaped light reflection surface. A marker lamp comprising a reflector having a light guide path leading to a portion. In a marker lamp comprising a marker base having a socket in the center, a light source unit detachably attached to the socket, and a dome-shaped marker cap attached to the marker base so as to cover the light source unit,
The light source unit is
A base removably inserted into the socket;
A plurality of light emitting diodes arranged in a ring around the base, and inside the plurality of light emitting diodes arranged in a ring, the light emitting diodes are arranged on the side surfaces, and on the side of the base A hollow conical light reflecting surface that is formed with a diameter that is gradually reduced as it approaches, and reflects the light of the light emitting diode toward the side portion of the marker cap, and an end portion of the hollow conical light reflecting surface in the axial direction And a reflector having a light guide that is formed by expanding the tip of each divided piece and guiding the light of the light emitting diode to the center of the marker cap. , Marker lamp. A light source unit mounted in a marker lamp socket,
A base that is removably inserted into the socket;
A plurality of light emitting diodes arranged in a ring around the base; and the light emitting diodes disposed on the side of the plurality of light emitting diodes attached to the base and arranged in a ring, The cone-shaped light reflecting surface is formed so as to be gradually reduced in diameter toward the base side, and reflects the light of the light emitting diode outward in the radial direction of a virtual circle passing through the optical axes of the plurality of light emitting diodes. And a light reflecting surface that is formed in a groove shape on the outer peripheral portion of the tip of the conical light reflecting surface, and that is inclined so as to approach the center as it goes toward the larger diameter side of the conical light reflecting surface. And a light guide unit that guides the light of the light emitting diode to the center of the marker cap in the axial direction of the virtual circle. A light source unit mounted in a marker lamp socket,
A base that is removably inserted into the socket;
A plurality of light emitting diodes arranged in a ring around the base; and the light emitting diodes disposed on the side of the plurality of light emitting diodes attached to the base and arranged in a ring, Further, the light reflection is formed in a hollow cone shape that gradually decreases in diameter as it approaches the base side, and reflects the light of the light emitting diode outward in the radial direction of a virtual circle that passes through each optical axis of the plurality of light emitting diodes. And the front end of the hollow conical light reflecting surface is divided by a plurality of cutting lines extending in the axial direction, and the front end of each divided piece is widened, and the light from the light-emitting diode is transmitted to the virtual circle. A light source unit comprising a reflector having a light guide that leads to a central portion of the marker cap in the axial direction. The light source unit according to claim 4, wherein a part of the divided piece is shortened or bent into a square shape.

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