JP4802086B2 - Revolving light - Google Patents

Description

  The present invention relates to a rotating lamp.

  Conventionally, as a light source, for example, a rotating lamp using an incandescent lamp as described in JP-A-2006-156026 has been widely used. However, a rotating lamp using an incandescent bulb as a light source has a problem that the bulb breaks in a short period of time, and also consumes a large amount of power and requires a lot of maintenance work.

Therefore, in recent years, a bullet-shaped LED light source has been used as a light source of a rotating lamp. For example, JP 2002-163903 A proposes a rotating lamp using a bullet-shaped LED light source. Yes. The rotating lamp described in Japanese Patent Laid-Open No. 2002-163903 includes a light source configured by arranging a plurality of bullet-shaped LED light emitting elements radially on the upper and lower surfaces of a disk-shaped holder, and around the light source. And a reflector provided.
JP 2006-156026 A JP 2002-163903 A

  However, in Japanese Patent Laid-Open No. 2002-163903, the bullet-shaped LED light emitting element employed as the light source has a small radiation angle and very high directivity, and it is difficult to radiate reflected light over a wide range. It was something. In the rotating lamp described in Japanese Patent Laid-Open No. 2003-163903, among the light emitted from the light source in which the LED light sources are arranged in a ring shape, the light emitted in the horizontal direction is reflected by the reflection mirror, while being vertically The light emitted in the direction is not reflected by the reflecting mirror but directly emitted outward. For this reason, in the rotating lamp described in Japanese Patent Application Laid-Open No. 2003-163903, the light from the rotating lamp diffuses in the vertical direction, and the light quantity of the LED light emitting element is not sufficient. It was difficult to secure.

  On the other hand, as a light source, a new power LED light source having a larger light quantity than a bullet-shaped LED light source element has been developed. However, such a new power LED with a large amount of light is not provided with a bullet-shaped lens that condenses light with a narrow viewing angle, for example. A rotating lamp that has been condensed in one direction and used as a light source for a rotating lamp to improve the visibility of the rotating lamp has never been proposed in the past. Absent.

  The present invention has been made in view of the above-described problems, and an object thereof is necessary as a rotating lamp in a rotating lamp using a novel power LED light source element having a wider irradiation angle than a bullet-shaped LED light source. It is to provide a revolving light in which high visibility is ensured.

The rotating lamp according to the present invention is provided with a base, a globe that is attached to the base and has translucency, a first light-emitting diode that is provided in the glove and functions as a light source, and is spaced from the first light-emitting diode. A second light emitting diode that functions as a light source, and is rotatably provided between the first light emitting diode and the second light emitting diode, and can reflect light from the first light emitting diode and the second light emitting diode as an integral reflected light. And a reflective mirror. The reflecting mirror includes a parabolic first reflecting surface that reflects light from the first light emitting diode in parallel, and a parabolic second reflecting surface that reflects light from the second light emitting diode in parallel. including. The first reflection surface includes a third reflection surface that reflects light from the first light emitting diode as first parallel light, and a second parallel light that travels in a direction intersecting the light from the first light emitting diode with the first parallel light. And a fourth reflecting surface that reflects as light. The second reflecting surface reflects the light from the second light emitting diode as third parallel light traveling parallel to the first parallel light, and the light from the second light emitting diode is third parallel. And a sixth reflecting surface that reflects as fourth parallel light traveling in a direction intersecting with the light. Preferably, the reflecting mirror has a shape extending from the rear side of the first light emitting diode to the side, extending below the first light emitting diode, and further to the rear and side of the second light emitting diode, The first light emitting diode and the second light emitting diode are opened toward the front . Good Mashiku, the first light emitting diode is provided on the upper wall of the globe, the second light emitting diode is provided on the base side with respect to the first light emitting diode.

  According to the rotating lamp according to the present invention, since the reflecting mirror reflects the light from the first and second light emitting diodes as an integral reflected light, the light from the rotating lamp can be confirmed even at a distance, The visibility required as a rotating lamp can be ensured. Furthermore, the light emitted directly outward from the light from the first and second light emitting diodes is diffused radially, and the light from the rotating lamp can be confirmed even from a region other than the front surface of the reflecting mirror. , Visibility in a wide range can be obtained.

  Embodiments of the present invention will be described with reference to FIGS. In addition, about the same or an equivalent structure, the same code | symbol may be attached | subjected and the description may be abbreviate | omitted.

(Embodiment 1)
A rotating lamp 100 according to the first embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a side sectional view of the rotating lamp 100 according to the first embodiment, and FIG. 2 is a front view of the rotating lamp 100. As shown in FIG. 1, a rotating lamp 100 includes a base 13, a globe 12 that is attached to the base 13 and has translucency, and a power LED (Light Emitting Diode) that is provided in the globe 12 and functions as a light source. (First light-emitting diode) 60A and a power LED (second light-emitting diode) 60B provided at a distance from the power LED 60A. Further, the rotating lamp 100 further includes a reflecting mirror 5 that is provided between the power LED 60A and the power LED 60B and reflects light from the power LEDs 60A and 60B as integral reflected light.

  Here, since the reflecting mirror 5 reflects the light from the power LEDs 60A and 60B as an integral reflected light, the observer of the rotating lamp 100 observes the reflected light of the power LED 60A and the power LED 60AB simultaneously. Thus, the amount of reflected light from the reflecting mirror 5 is high, and the rotating lamp 100 can ensure the visibility required as a rotating lamp.

  The reflecting mirror 5 extends laterally from the rear of the power LED 60A and is connected to the curved surface portion 5A passing through the lower side of the power LED 60A and the lower end portion of the curved surface portion 5A, and the power LED 60B extends from the lower end portion of the curved surface portion 5A. And a curved surface portion 5B extending rearward and laterally. The curved surface portion 5A and the curved surface portion 5B are both shaped so that the front sides of the power LEDs 60A and 60B are open.

  In this way, by connecting the two paraboloid-shaped curved surface portions 5A and 5B to each other on the tip end side, the depth direction of the reflecting mirror 5 is ensured while ensuring the height of the reflecting surface and the reflecting area of the reflecting mirror 5. In addition, the horizontal width can be reduced, and the reflecting mirror 5 can be made compact. For this reason, the rotating lamp 100 itself can be made compact. The light from the power LEDs 60A and 60B reflected by the reflecting surface 6A of the curved surface portion 5A and the reflecting surface 6B of the curved surface portion 5B can be reflected in the same direction from the openings of the curved surface portions 5A and 5B. it can.

  Both the reflecting surface 6A of the curved surface portion 5A and the reflecting surface 6B of the curved surface portion 5B have a parabolic shape. That is, the reflecting surfaces 6A and 6B are curved in a parabolic shape as they go in the first direction (vertical direction) from the upper wall portion 12A of the globe 12 toward the base body 13. Further, it is orthogonal to the first direction and is curved in a parabolic shape as it goes in a second direction (horizontal direction) perpendicular to the paper surface of FIG.

  The power LED 60A is provided at the focal point O1 of the reflecting surface 6A, and the power LED 60B is provided at the focal point O2 of the reflecting surface 6B.

  For this reason, the reflected light L1 of the power LED 60A reflected by the reflecting surface 6A is reflected in parallel in the second direction (horizontal direction). Moreover, the reflected light L2 of the power LED 60B reflected by the reflecting surface 6B is reflected in parallel in the second direction (horizontal direction).

  For this reason, the reflected lights L1 and L2 arrive without being diffused far away, and the rotating lamp 100 can ensure the visibility in the distance.

  In FIG. 1, quasi-lines R1 and R2 of the parabolic cross sections of the reflecting surfaces 6A and 6B are parallel to or coincide with each other in the vertical cross section of the reflecting surfaces 6A and 6B. For this reason, the reflected light L1 and the reflected light L2 are radiated in the same direction, and are radiated as parallel light in which vertical diffusion is suppressed.

  FIG. 3 is a plan view of the rotating lamp 100 partially transparently viewed. As shown in FIG. 2 and FIG. 3, in the parabola in the cross section in the horizontal direction of the reflecting surfaces 6A and 6B, the quasi-lines S1 and S2 of the parabolas are both parallel. The reflected lights L1 and L2 are both emitted in the same direction and are not diffused in the horizontal direction.

  That is, in FIG. 1, the reflecting surface 6A and the reflecting surface 6B are arranged such that the axis P1 of the reflecting surface 6A and the axis P2 of the reflecting surface 6B are parallel to each other. Here, the axis P1 is a straight line passing through the focal point O1 of the reflecting surface 6A and the apex of the parabolic surface of the reflecting surface 6A, and the axis P2 is the focal point O2 of the reflecting surface 6B and the parabolic surface of the reflecting surface 6B. A straight line passing through the vertex. In the first embodiment, the reflecting surfaces 6A and 6B are symmetrical with respect to the boundary 30 between the curved surface portion 5A and the curved surface portion 5B shown in FIG. 2, and the reflected lights L1 and L2 Can be reflected as parallel light in the same direction.

  Here, even if it is going to reflect the light from a plurality of light sources by one reflective surface, each light source cannot be accurately arranged at the focal point of the reflective surface, and the reflected light diffuses in the distance. As shown in the present embodiment, by arranging a light source at the focal position of each reflecting surface with respect to a plurality of reflecting surfaces, it can be reflected as accurate parallel light. Thereby, the visibility of the rotating lamp in the distance can be ensured.

  In FIG. 1, the light LED 60A, 60B has a light emission angle θ of about 170 degrees, and is radiated over the entire area from the bases 31, 32 to the boundary 30 of the reflecting surfaces 6A, 6B. Here, an intersection angle between a line segment T3 passing through the focal point O1 and the base 31 and a line segment T2 passing through the focal point O1 and the boundary part 30 is defined as θ4. In addition, an intersection angle between a line segment T4 passing through the focal point O2 and the base 32 and a line segment T1 passing through the focal point O2 and the boundary part 30 is defined as θ5. The light emission angle θ of the power LED 60A is larger than the crossing angle θ4, and the light emission angle θ of the power LED 60B is larger than the crossing angle θ5. As described above, the reflection surfaces 6A and 6B Light from the power LEDs 60A and 60B is radiated on substantially the entire surface.

  In addition, at least a part of the light from the power LEDs 60B and 60A is radiated radially toward the outside of the rotating lamp 100 directly. For this reason, the observer can confirm the light from the rotating lamp 100 even at a position off the front surface of the reflecting surfaces 6A and 6B. Then, the power LEDs 60A and 60B are provided on the reflecting surfaces 6A and 6B at positions retracted in the axial direction of the shaft portion 3 from the region located on the front side in the traveling direction of the reflected lights L1 and L2. Can inhibit the progress of reflected light. Note that the axial direction of the shaft portion 3 and the quasi-lines R1 and R2 are parallel to each other.

  In FIG. 1, the rotating lamp 100 further includes heat dissipation mechanisms 62 and 63 that dissipate heat generated from the power LEDs 60B and 60A. The heat dissipating mechanism 62 includes a heat dissipating plate 80 having a power LED 60 </ b> A bonded to the lower surface side, and a fixing portion 81 for fixing the heat dissipating plate 80 to the upper wall portion 12 </ b> A of the globe 12. The heat radiating plate 80 is made of a metal material such as aluminum or copper, and has a size that substantially covers the upper wall portion 12 </ b> A of the globe 12.

  The heat generated by the power LED 60A is radiated by the heat radiating plate 80, the temperature rise of the power LED 60A is suppressed, and the occurrence of adverse effects such as deterioration of the light emission efficiency of the power LED 60A can be suppressed.

  The heat dissipating mechanism 63 includes a heat dissipating plate 7 to which the power LED 60B is bonded on the upper surface side, a shaft portion 3 to which the heat dissipating plate 7 is fixed at the tip, and a plate-like chassis 4 fixed to the lower end portion of the shaft portion 3. And.

  These heat radiating plate 7, shaft 3 and chassis 4 are made of a metal material such as aluminum or copper, for example, and heat from power LED 60B is favorably transferred. Then, heat is radiated well from the heat radiating plate 7, the shaft portion 3 and the chassis 4. The chassis 4 substantially coincides with the cross-sectional area of the base 13 and can radiate heat well.

  In the present embodiment, as described above, the heat from the power LEDs 60A and 60B is radiated into the rotating lamp 100, but the present invention is not limited to this.

  For example, the heat radiating plate 80 may be fitted into the upper wall portion 12 </ b> A of the globe 12 and the upper surface of the heat radiating plate 80 may be exposed to the outside of the rotating lamp 100. Thereby, the heat of the power LED 60B can be radiated to the outside of the rotating lamp 100, and the temperature inside the rotating lamp 100 can be suppressed from rising.

  By exposing a part of the heat sink 80 to the outside, the heat sink 80 can be cooled by external air. Further, in the heat dissipation mechanism 63, the shaft portion 3 may be further extended downward and directly connected to the base body 13. Thereby, the heat transmitted to the shaft portion 3 can be radiated from the base 13 to the outside. That is, by causing the base 13 to function also as a radiator, it is possible to suppress the temperature rise of the power LED 60A and to suppress the temperature rise in the rotating lamp 100. The substrate 13 is made of a metal die cast or a composite material in which a metal material is dispersed in a resin.

  Thus, since the temperature rise of power LED60B, 60A can be suppressed, the reduction of the light quantity of power LED60B, 60A accompanying a temperature rise can be suppressed, and the light quantity for obtaining the visibility required as a rotating lamp Can be secured.

  For example, when the heat sink 80 is fitted to the upper wall portion 12A and a part of the heat sink 80 is exposed to the outside, the power LED 60A can be cooled well, so that the power LED having a larger output than the power LED 60B. May be used.

  The reflecting mirror 5 is provided to be rotatable around the shaft portion 3 by a drive mechanism 75. The drive mechanism 75 is formed on the rotary member 8 rotatably provided on the shaft portion 3, the peripheral surface of the rotary member 8, the gear portion 41 shown in FIG. 3, and the worm gear 40 corresponding to the gear portion 41, The motor (drive source) 11 that rotates the worm gear 40 is provided.

When the motor 11 rotates, the worm gear 40 rotates the rotating member 8 shown in FIG. 1 around the shaft portion 3, and thereby the reflecting mirror 5 also rotates around the shaft portion 3.

  Here, the power LEDs 60 </ b> A and 60 </ b> B are arranged on the axis of the shaft portion 3. The focal points O1 and O2 of the reflecting surfaces 6A and 6B are also arranged on the axis of the shaft portion 3. For this reason, even if the reflecting mirror 5 rotates around the shaft portion 3, the focal points O1 and O2 are not displaced and are fixed at fixed positions, and the power LEDs 60A and 60B are disposed at the focal points O1 and O2, respectively. Therefore, even if the reflecting mirror 5 rotates, the reflected lights L1 and L2 from the reflecting surfaces 6A and 6B are not swayed and are radiated well in the horizontal direction.

(Embodiment 2)
A rotating lamp 200 according to the second embodiment will be described with reference to FIGS. 4 to 8. FIG. 4 is a side sectional view of the rotating lamp 200 according to the second embodiment. As shown in FIG. 2, the rotating lamp 200 includes a reflecting mirror 5 having a plurality of curved portions 5C to 5F.

  FIG. 5 is an enlarged cross-sectional view of the reflecting mirror 5, and FIG. 6 is a front view of the reflecting mirror 5. FIG. 7 is a plan view of the rotating lamp 200 according to the second embodiment. As shown in FIG. 5, the reflecting mirror 5 includes a curved surface portion 5A provided to cover the power LED 60A and a curved surface portion 5B provided to cover the power LED 60B.

  The curved surface portion 5B includes a curved portion 5D provided at an end portion on the power LED 60B side, and a curved portion 5F provided at an upper end portion of the curved portion 5D. The curved surface portion 5A includes a curved portion 5C provided on the power LED 60A side and a curved portion 5E provided at an end of the curved portion 5C. And the edge part of the bending part 5E and the edge part of the bending part 5F are provided in a row, and the curved surface part 5A and the curved surface part 5B are integrally connected.

  And all of the reflective surfaces 6C-6F of these curved parts 5C-5F are made into the paraboloid shape.

  Here, the axis P1 of the reflective surface 6E and the axis P2 of the reflective surface 6F extend in parallel to the horizontal direction. Further, the axis P3 of the reflecting surface 6C is inclined downward with respect to the axes P1 and P2 in the traveling direction of the reflected lights L1 and L2 of the reflecting surfaces 6E and 6F.

  On the other hand, the axis P4 of the reflecting surface 6D is inclined upward with respect to the axes P1 and P2 as it goes in the traveling direction of the reflected lights L1 and L2 of the reflecting surfaces 6E and 6F. In addition, an axis line means the straight line which passes through the focal point of each reflective surface 6C-6F, and passes through the vertex of the paraboloid of each reflective surface 6C-6F.

  That is, when the reflective surfaces 6C to 6F are viewed in a cross section in the vertical direction, the quasi-lines R1 and R2 extending in the vertical direction between the reflective surface 6E and the reflective surface 6F extend in parallel or in parallel with each other. The quasi-lines R3 and R4 of the reflecting surfaces 6C and 6D intersect the quasi-lines R1 and R2.

  Here, the focal point O1 of the reflecting surface 6E coincides with the focal point O3 of the reflecting surface 6C, and the power LED 60 is disposed at the positions of the focal points O1 and O3. The focal point O2 of the reflecting surface 6F and the focal point O4 of the reflecting surface 6D coincide with each other, and the power LED 60B is located at the focal points O2 and O4. For this reason, among the light from the power LED 60A, the reflected light L1 and L3 reflected by the reflecting mirror 5 becomes parallel light, and among the light from the power LED 60B, the reflected light L2 reflected by the reflecting mirror 5 L4 is also reflected as parallel light.

  Specifically, when the light from the power LED 60A is reflected by the reflective surface 6E, the reflected light L1 travels in the horizontal direction, and the reflected light L3 reflected by the reflective surface 6C travels downward from the reflected light L1. It becomes reflected light L3. Further, when the light from the power LED 60B is reflected by the reflecting surface 6F, the reflected light L2 travels in the horizontal direction, and the reflected light L4 reflected by the reflecting surface 6D is reflected light L4 directed upward from the reflected light L2. It becomes.

  In particular, the reflected light L1 and the reflected light L2 travel in the same direction, and the reflecting surface 6E and the reflecting surface 6F are connected to each other, so that they are integrated reflected light. For this reason, the reflected lights L1 and L2 can be visually recognized even in the distance. Further, the reflected light L3 or the reflected light L4 can be confirmed at a position above or below the front surface of the reflecting mirror 5, and the reflected lights L3 and L4 are parallel light. The reflected lights L3 and L4 can be confirmed even in the distance. The focal points O <b> 1 to O <b> 4 are located on the axis line of the shaft portion 3.

  As shown in FIG. 6, the quasi-lines S1 to S4 of the reflecting surfaces 6C to 6F extending in the horizontal direction extend in parallel. For this reason, as shown in FIG. 7, when the rotary lamp 200 is viewed in plan, the reflected lights L1 to L4 are not diffused in the horizontal direction but travel in the same direction.

  Further, in FIG. 5, the observer can also check the light emitted directly from the power LEDs 60 </ b> A and 60 </ b> B without going toward the reflecting mirror 5.

  Thus, according to the rotating lamp 200 according to the second embodiment, the reflected light from the reflecting mirror 5 radiates parallel light in multiple directions, so that the visibility of the rotating lamp 200 is improved. In addition, the visibility is improved by direct light from the power LEDs 60A and 60B.

  In addition, as FIG. 7 shows, the bending part 5C and the bending part 5D are made into the same shape, and also the bending part 5E and the bending part 5F are made into the same shape.

  FIG. 8 is a perspective view showing the internal structure of the rotating lamp 200 according to the second embodiment. As shown in FIG. 8, the rotating lamp 200 is also provided with a heat dissipation mechanism, a motor 11 and the like, similar to the rotating lamp 200 according to the first embodiment.

  Although the embodiment of the present invention has been described above, it should be considered that the embodiment disclosed this time is illustrative and not restrictive in all respects. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Furthermore, the above numerical values are examples, and are not limited to the above numerical values and ranges.

  The present invention is suitable for a rotating lamp.

It is a sectional side view of the rotary lamp which concerns on this Embodiment 1. FIG. It is a front view of a revolving light. It is a top view of the rotating light which transparently saw a part. It is a sectional side view of the rotary lamp which concerns on this Embodiment 2. FIG. It is sectional drawing to which the reflecting mirror was expanded. It is a front view of a reflecting mirror. It is a top view of the rotary lamp which concerns on this Embodiment 2. FIG. It is a perspective view which shows the internal structure of the rotary lamp which concerns on this Embodiment 2. FIG.

Explanation of symbols

  3 axis part, 4 chassis, 5 reflecting mirror, 5A, 5B curved surface part 6A, 6B, 6C, 6D, 6F reflecting surface, 60A, 60B power LED, 62, 63 heat dissipation mechanism, 100 rotating lamp, O1, O2 focus.

Claims (3)

A substrate;
A glove attached to the substrate and having translucency;
A first light emitting diode provided in the globe and functioning as a light source;
A second light emitting diode provided at a distance from the first light emitting diode and functioning as a light source;
A reflecting mirror rotatably provided between the first light emitting diode and the second light emitting diode, and capable of reflecting light from the first light emitting diode and the second light emitting diode as an integral reflected light;
Equipped with a,
The reflecting mirror includes a parabolic first reflecting surface that reflects light from the first light emitting diode in parallel, and a parabolic second reflecting that reflects light from the second light emitting diode in parallel. Including a surface,
The first reflecting surface travels in a direction intersecting the first parallel light with a third reflecting surface that reflects light from the first light emitting diode as first parallel light and a light from the first light emitting diode. A fourth reflecting surface that reflects as the second parallel light,
The second reflecting surface reflects the light from the second light emitting diode as third parallel light that travels in parallel with the first parallel light, and the light from the second light emitting diode to the first light. A rotating lamp including a sixth reflecting surface that reflects as fourth parallel light traveling in a direction intersecting with the three parallel light .   The reflecting mirror has a shape that extends laterally from the rear of the first light emitting diode, and further extends to the rear and side of the second light emitting diode via the lower side of the first light emitting diode, The rotating lamp according to claim 1, wherein the rotating light opens toward the front of the first light emitting diode and the second light emitting diode. The rotation according to claim 1 or 2 , wherein the first light emitting diode is provided on an upper wall of the globe, and the second light emitting diode is provided on the base side with respect to the first light emitting diode. light.

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