JP5653290B2 - lamp - Google Patents

Description

  The present invention relates to a lamp using a semiconductor light emitting element such as a light emitting diode (LED).

  In recent years, semiconductor light emitting devices such as LEDs are expected to be new light sources for various lamps because of their high efficiency and long life, and research and development of LED lamps using LEDs as light sources are being promoted.

  Examples of such LED lamps include a straight tube type LED lamp (straight tube type LED lamp) and a light bulb type LED lamp (bulb shape LED lamp). In any lamp, an LED module (light emitting module) configured by mounting a plurality of LEDs on a substrate is used.

  For example, Patent Document 1 discloses a conventional straight tube LED lamp.

JP 2009-043447 A

  In the conventional LED lamp (including the straight tube type and the light bulb type), as described above, the LED mounted on the substrate is used as the light source. Therefore, the LED is mounted in the main light irradiation direction as viewed from the substrate. The direction of the side.

  That is, in the conventional LED lamps, the incandescent bulb, the bulb-type fluorescent lamp or the straight tube type fluorescent lamp having the total light distribution characteristics is different in the way the light from the light source spreads. It is not easy to obtain light distribution characteristics.

  In order to obtain a wide light distribution characteristic, for example, in a straight tube LED lamp, a direction orthogonal to the axis of the straight tube so that more of the light emitted from the LED can be used as illumination light It is conceivable to arrange the LED at a position near the center in the cross section.

  In this case, for example, it is possible to arrange the LED at the position by attaching the LED module to a mounting base arranged on the inner surface of the straight pipe.

  However, in this case, the mount itself prevents the light from the LED module from being irradiated to the outside of the straight tube. Moreover, the operation | work for joining an LED module to the mounting stand inside a straight pipe is needed, and this becomes a factor which prevents the improvement of production efficiency, for example.

  The present invention is a lamp using a semiconductor light-emitting element in consideration of the above-described conventional problems, and the lamp capable of realizing a wide light distribution characteristic with a simple configuration without being blocked by the mounting base. The purpose is to provide.

  In order to achieve the above object, a lamp according to one embodiment of the present invention includes a base body on which a semiconductor light emitting element is disposed, an outer shell member on which the base body is disposed and having translucency, and the base body. An attached holding member, which has a plurality of linear members, and each of the plurality of linear members is in contact with the inner surface of the outer shell member, thereby allowing the base to be inward of the outer shell member. Each of the plurality of linear members has elasticity, and extends from the base toward the inner surface of the outer shell member in different directions from each other. .

  According to this configuration, the holding member is attached to the base body on which the semiconductor light emitting element is disposed. In addition, the holding member includes at least two linear members that have elasticity and extend in different directions. When the linear members come into contact with the inner surface of the outer shell member, in other words, the holding member becomes the outer shell member. The substrate is held at a predetermined position by stretching the inner surface.

  That is, the semiconductor light-emitting device as a light source can be inserted into the outer shell member in a simple assembly operation, for example, by inserting the base body with the holding member attached into the outer shell member from the end opening. A lamp arranged approximately in the center of the cross section perpendicular to is realized.

  In addition, since the portion of the holding member that comes into contact with the inner surface of the outer shell member is a linear member, the amount of the holding member that prevents the light emitted from the semiconductor light emitting element from irradiating the outer shell member outward is extremely small. It will be a thing.

  As described above, the lamp according to this aspect is a lamp using a semiconductor light emitting element, and can realize multi-directional light distribution characteristics with a simple configuration.

  In the lamp according to one aspect of the present invention, the lengths or shapes of the two linear members included in the plurality of linear members may be different from each other.

  According to this configuration, for example, the natural frequencies of the two linear members can be made different, and as a result, the occurrence of resonance of these two linear members is suppressed. Therefore, for example, when the lamp of this aspect is transported and attached to a lighting fixture, the base is prevented from shaking greatly.

  In the lamp according to one aspect of the present invention, at least one of the plurality of linear members may be made of a shape memory alloy.

  According to this configuration, while holding the state where the outer diameter of the holding member as a whole is reduced to a size that does not contact the inner surface of the outer shell member, the base body to which the holding member is attached is placed inward of the outer shell member. Can be inserted.

  That is, when the base member is inserted into the outer shell member, the holding member and the inner surface of the outer shell member are prevented from rubbing against each other. Further, since the shape memory alloy returns to its original shape when heated, for example, the outer diameter of the holding member can be returned to the original size by causing the semiconductor light emitting element to emit light. It is held stably.

  In the lamp according to one aspect of the present invention, the holding member may be attached to the holding member by inserting a part of the holding member into an end portion of the base.

  According to this configuration, the holding member can be easily and reliably attached to the base.

  Moreover, the lamp | ramp which concerns on 1 aspect of this invention WHEREIN: The said base | substrate may have a groove | channel or a notch engaged with the said part of the said holding member.

  According to this configuration, the holding member can be more reliably and stably attached.

  Further, in the lamp according to one aspect of the present invention, an end opening is formed in the outer shell member, and an inner diameter of the end opening is an inner diameter of the outer shell member at a position where the holding member is disposed. It may be smaller than that.

  According to this configuration, for example, when the outer shell member is a straight glass tube, the end opening is formed so that its inner diameter is smaller than the inner diameter other than the end of the glass tube. Thereby, the intensity | strength of the edge part opening which is a location which is easy to break in the said glass tube improves, for example. As a result, for example, breakage of the glass tube in the process of manufacturing the lamp is prevented.

  Also, for example, if the inner diameter of the end opening is reduced by at least the thickness of the base, the step between the outer peripheral surface of the outer shell member and the outer peripheral surface of the base can be reduced when the base is attached to the end opening. it can.

  Further, the linear member of the holding member has elasticity. For this reason, even when the inner diameter of the end opening is formed to be relatively small in this way, the holding member attached to the base must pass through the end opening when assembling the lamp. And the substrate can be appropriately held at a predetermined position by the restoring force.

  Moreover, the lamp | ramp which concerns on 1 aspect of this invention WHEREIN: The said outer shell member is good also as having a sealing edge part formed by sealing an edge part opening.

  According to this configuration, the airtightness of the outer shell member can be maintained. Therefore, for example, it is possible to prevent water or water vapor from entering the outer shell member. Thereby, degradation of the semiconductor light emitting element due to moisture can be suppressed.

  Further, for example, helium can be enclosed in the outer shell member. In this case, the heat dissipation efficiency for the heat generated in the semiconductor light emitting device is improved.

  That is, effective heat dissipation is ensured without attaching a component that hinders light irradiation, such as a metal heat sink, to the substrate on which the semiconductor light emitting element is disposed. As a result, for example, a decrease in light output and a shortening of the lifetime of the semiconductor light emitting element are suppressed.

  Therefore, according to the lamp of this aspect, a wide light distribution characteristic in multiple directions can be realized with a simple configuration, and the semiconductor light emitting element can be made long lasting.

  The lamp according to one embodiment of the present invention further includes a sealing body that seals the end opening, and the sealing end is formed by sealing the end opening with the sealing body. It may be formed.

  In the lamp according to one embodiment of the present invention, the base body may have a light-transmitting property that transmits light from the semiconductor light-emitting element.

  According to this configuration, when the light emitted from the semiconductor light emitting element reaches the substrate directly or indirectly, the light can be transmitted through the substrate, and as a result, the light is emitted to the outside of the outer shell member. .

  ADVANTAGE OF THE INVENTION According to this invention, the lamp | ramp which can implement | achieve the multidirectional light distribution characteristic with a simple structure can be provided.

1A and 1B are a top view and a perspective view showing a schematic configuration of a lamp according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the lamp in the first embodiment. FIG. 3 is a diagram showing an example of the shape of the holding member in the first embodiment. FIG. 4 is a diagram illustrating an example of a shape of the holding member in the first embodiment when viewed from above. FIG. 5 is a perspective view showing an outer appearance of the outer shell member when the inner diameter of the end opening is formed smaller than that of the other part in the first embodiment. FIG. 6 is a top view showing the relationship between the outer shell member and the base shown in FIG. FIG. 7 is a perspective view showing a state in which a base body to which a holding member is attached is inserted into the outer shell member shown in FIG. FIG. 8 is a perspective view showing a part of the manufacturing process of the lamp when the holding member in the first embodiment is made of a shape memory alloy. FIG. 9 is a perspective view showing an appearance of an LED module having a surface mount device (SMD) type LED. FIG. 10 is a perspective view illustrating an appearance of an LED module including one long substrate. FIG. 11A is a top view showing a state where the sealing body and the heat shield in Embodiment 1 are joined. FIG. 11B is a diagram showing an example of another shape of the heat shield in the first exemplary embodiment. FIG. 12 is an exploded perspective view of the lamp in the second embodiment. FIG. 13 is a front view of the lamp in the second embodiment.

  Below, the lamp | ramp which concerns on embodiment of this invention is demonstrated, referring drawings. Each figure is a schematic diagram and is not necessarily illustrated exactly.

(Embodiment 1)
First, the lamp in Embodiment 1 of this invention is demonstrated using FIGS. 1-11B.

  FIG. 1 is a top view and a perspective view showing a schematic configuration of a lamp 100 according to Embodiment 1 of the present invention, and FIG. 2 is an exploded perspective view of the lamp 100 according to Embodiment 1. FIG.

  In each of the drawings including FIG. 1, for convenience, the side on which the semiconductor light emitting element (LED 112) is arranged is illustrated upward in the lamp 100 so that the structure of the lamp 100 can be easily understood.

  As shown in FIGS. 1 and 2, the lamp 100 according to the first embodiment of the present invention is a straight tube type LED lamp, and includes a base 115 on which a plurality of LED modules 110 are arranged, and a light-transmitting outside. A shell member 120.

  The LED module 110 includes a substrate 114 and a light emitting unit 111 disposed on the substrate 114. The light emitting unit 111 includes a plurality of LEDs 112 and a sealing member 113 that seals the plurality of LEDs 112.

  As the LED 112, for example, a blue LED is employed, and as the sealing member 113, for example, a material in which predetermined phosphor particles are dispersed in a translucent material such as silicone resin is employed. Further, as this phosphor particle, YAG (yttrium, aluminum, garnet) yellow phosphor particles are employed.

  The yellow phosphor particles emit yellow light when excited by blue light from the LED 112. As a result, white light obtained by the yellow light and the blue light from the LED module 110 is emitted from the light emitting unit 111.

  Note that in this embodiment mode, a structure including the substrate 114 and the base 115 is referred to as a base body 116. In this case, it is expressed that the LED 112 is arranged on the base 116.

  Outer shell member 120 is a glass tube in the present embodiment. In FIG. 1 and the like, the outer shell member 120 is depicted as transparent in order to describe the internal structure of the outer shell member 120, but the outer shell member 120 need not be transparent.

  For example, a diffusion film may be formed on the outer surface or inner surface of the outer shell member 120 that is transparent. Thereby, the light emitted from the LED module 110 can be diffused. Examples of such a diffusion film include a diffusion film formed by applying silica, calcium carbonate, or the like to the inner surface of the outer shell member 120.

  Further, the material of the base body 116 (the substrate 114 and the base 115) is not particularly limited. For example, the base material 116 (the substrate 114 and the base 115) is a light-transmitting material that transmits light from the LED 112 (such as glass or light-transmitting ceramic). It is configured.

  Here, it is assumed that the light from the LED 112 directly reaches the base 116 or indirectly reaches the base 116 through the diffusion film or the like. In this case, the light can be transmitted through the base 116, and as a result, is emitted to the outside of the outer shell member 120. That is, the lamp | ramp 100 can radiate | emit light in a wider range because the base | substrate 116 has translucency.

  The base 116 is held at a predetermined position inside the outer shell member 120 by the holding member 140. In the present embodiment, as shown in the plan view of FIG. 1, the base body 116 is held by the three holding members 140, but the number of holding members 140 may be one or more.

  In the present embodiment, for example, the base body 116 is held so that the LED 112 is positioned near the center of the cross section perpendicular to the longitudinal direction (X-axis direction) of the outer shell member 120.

  The holding member 140 has a plurality of linear members 141, and each of the plurality of linear members 141 comes into contact with the inner surface of the outer shell member 120, whereby the base 116 is placed at a predetermined position inside the outer shell member 120. Hold on.

  In brief, the holding member 140 includes a plurality of arms (linear members 141) that extend from the base body 116 toward the inner surface of the outer shell member 120.

  Each of the plurality of linear members 141 has elasticity, and extends from the base body 116 toward the inner surface of the outer shell member 120 in different directions.

  In the present embodiment, the holding member 140 includes two linear members 141, and these two linear members 141 extend in directions opposite to each other with the base body 116 interposed therebetween. The base body 116 is held at a predetermined position by stretching by the elastic force spreading in the inner surface direction.

  The tip of the linear member 141 is in line contact with the inner surface of the outer shell member 120. The linear member 141 may be in point contact with the inner surface of the outer shell member 120, but the linear contact can be firmly held because the contact area is larger.

  One holding member 140 is formed, for example, by bending one elastic metal bar or metal plate. Details of the shape and the like of the holding member 140 will be described later with reference to FIG.

  The outer shell member 120 has a sealed end 125 formed by sealing an end opening 121 that is an insertion port of the base 116 with heat.

  Specifically, the base body 116 with the holding member 140 attached thereto is inserted into the outer shell member 120 from the end opening 121. Then, the sealing end part 125 is formed in the end part opening 121 by welding the sealing body 130 comprised, for example with soft glass with a heat | fever. As a result, the end opening 121 is sealed and closed. That is, the peripheral edge of the end opening 121 and the peripheral edge of the flare portion of the sealing body 130 (the shape and size corresponding to the end opening 121) are thermally welded.

  Since the end opening 121 of the outer shell member 120 is sealed as described above, the inside of the outer shell member 120 can be almost sealed, so that, for example, water or water vapor can be used for a long period of time. Intrusion into the LED module 110 can be prevented and deterioration of the LED module 110 due to moisture can be suppressed.

  Further, for example, helium can be enclosed in the outer shell member 120. In this case, the heat dissipation efficiency for the heat generated in the LED 112 is improved.

  That is, effective heat dissipation is ensured without attaching a component such as a metal heat sink that hinders light irradiation to the base 116. As a result, for example, a decrease in the light output of the LED 112 and a shortening of the lifetime are suppressed.

  Although omitted in FIG. 2, a single thin tube functioning as an exhaust pipe is provided in the approximate center of the sealing body 130, and the air inside the outer shell member 120 is connected to the exhaust pipe via this exhaust pipe. Then, replacement with a gas such as helium is performed, and then the tip of the exhaust pipe is sealed and closed (chip off) by heat.

  Further, in the step of thermally welding the sealing body 130 to the end opening 121, for example, heat of about 700 ° C. from a burner or the like is radiated in the direction of the base body 116 having the LED 112 or the like for several tens of seconds. Become.

  Therefore, the lamp 100 according to the present embodiment includes a heat shield 135 disposed between the sealing end 125 and the base body 116.

  The heat shield 135 is a heat resistant object. In the present embodiment, the heat shield 135 is a plate-shaped member, more specifically, a disk-shaped ceramic.

  Further, in the present embodiment, the heat shield 135 is disposed so as to cover the side surface of the base 116 on the side of the sealing end 125 when viewed from the sealing end 125.

  In the lamp 100 according to the present embodiment, the heat shield 135 shields the radiant heat generated in the thermal welding process from going directly toward the base 116, so that the base 116 is not adversely affected by the radiant heat. It is suppressed.

  The shape and material of the heat shield 135 are not limited as long as the heat shield 135 has resistance to the radiant heat generated in the above heat welding process and can suppress the influence of the radiant heat on the substrate 116.

  In this embodiment, the heat shield 135 having a thickness of 1 mm is used. If the thickness is thin, the heat shielding effect is lost, and if the thickness is thick, it becomes heavy, which is not preferable. The distance between the side surface of the heat shield 135 and the inner surface of the outer shell member 120 is about 2 mm. If this interval is too large, the heat shielding effect will decrease, and if the interval is narrow, the heat shield 135 will come into contact with the inner surface of the outer shell member 120 and will be easily damaged when inserted or may collide with vibration. This is not preferable because it causes cracking or abnormal noise.

  Moreover, the heat shield 135 may be made of, for example, glass with an infrared reflecting film. In this case, the light from the LED 112 can reach the outside of the heat shield 135 as viewed from the base 116. That is, the luminous flux used as illumination light can be increased.

  Further, the sealing end portion 125 may be formed without using the sealing body 130. For example, the sealing end portion 125 may be formed by a pinch sealing method in which the sealing end portion 125 is crushed and sealed with a mold in a heat-softened state.

  The lamp 100 of the present embodiment includes a base 150 having a pair of base pins 151 and an attachment member 160 for attaching the lamp 100 to a lighting fixture.

  The base 150 has, for example, a lighting circuit (not shown) that converts AC power received through the base pin 151 into DC power. As a result, the base 150 can supply DC power to the plurality of LED modules 110 via the base pin 151 and the conductive members 152 and 153.

  Specifically, as shown in FIG. 2, the sealing body 130 is formed with a first hole 132 that seals and penetrates the conductive member 152 for supplying power to the LED 112 from the outside of the outer shell member 120. Has been. That is, the conductive member 152 passes through the first hole 132 in a state where the airtightness is maintained.

  In addition, as for the electrically-conductive member 152, a part including the part sealed by the 1st hole 132 and the other part may be comprised separately.

  Further, in the present embodiment, the heat shield 135 is formed with a second hole 137 through which the conductive member 153 passes. The conductive member 153 is coupled to the conductive member 152 and is electrically connected to the plurality of LED modules 110. That is, the conductive member 153 functions as a member for supplying power to the LED 112 together with the conductive member 152.

  As described above, in the lamp 100 according to the present embodiment, the lead wire (conductive member 152 + conductive member 153) extending from the base body 116 on which the LED 112 is disposed penetrates the heat shield 135 and the sealing body 130. Yes.

  That is, in this case, the mount body in which the lead wire (conductive member 152 + conductive member 153) penetrating through the sealing body 130 is connected to the base body 116 through the heat shield 135 is integrated with the end opening 121. To the inside of the outer shell member 120.

  The linear member 141 of the holding member 140 has elasticity. Therefore, in this insertion operation, the holding member 140 is inserted into the outer shell member 120 without any difficulty while elastically deforming, and after the base body 116 is inserted to a predetermined position, the base member 116 is restored by a restoring force. 116 can be held appropriately.

  For example, the linear member 141 is inserted in a contracted state, and after being inserted, the linear member 141 is restored and expanded so that the linear member 141 is stretched to a predetermined position. Thereafter, the sealing member 130 and the outer shell member 120 are heat-sealed in a circumferential shape to form the sealing end 125. The manufacturing process of the lamp 100 is completed through operations such as connection between the conductive member 152 located outside the outer shell member 120 and the base pin 151 of the base 150 and fixing of the base 150 to the end of the outer shell member 120.

  Note that the conductive member 152 and the base 150 may be connected when the base body 116 is inserted into the outer shell member 120.

  Here, at the end of the outer shell member 120 opposite to the sealing end 125, that is, the end where the attachment member 160 is installed, there is no need to extend the conductive member or the like to the outside. Therefore, when it is necessary to maintain the airtightness of the outer shell member 120 as in the present embodiment, for example, the outer shell member 120 may be formed with the end portion closed.

  In addition, the end portion may be sealed by the sealing body 130 in the same manner as the sealing end portion 125. In this case, like the sealing end portion 125, the heat shield 135 is fixed between the end portion and the base body 116 by a predetermined means, so that the radiant heat at the time of heating the end portion is transferred to the base body 116. The influence of is suppressed.

  Further, as described above, since the end portion does not need to extend the conductive member or the like to the outside, the first hole 132 is not provided in the sealing body 130 used for sealing the end portion.

  Further, when the outer shell member 120 is relatively short, the mounting member 160 may be omitted when the lamp 100 can be cantilevered by the coupling portion between the base 150 and the lighting fixture.

  The end portion to which the mounting member 160 is attached may also be configured to function as a lamp using a base having a two-pin configuration, similar to the base 150 side.

  FIG. 3 is a diagram illustrating an example of the shape of the holding member 140 in the first embodiment.

  Specifically, FIG. 3 shows variations of six types of shapes (a) to (f). 3A to 3F respectively show the shapes of the holding member 140 when viewed from the tube axis direction (X-axis direction).

  The holding member 140 shown in FIG. 3A has the same shape as the holding member 140 shown in FIGS. 1 and 2, and the linear member 141 extending from the base 116 to the left and right contacts the inner surface of the outer shell member 120. ing.

  The method for attaching the holding member 140 to the base body 116 is not particularly limited. For example, the holding member 140 may be attached by an adhesive, and the holding member 140 is embedded in the base body 116 so that the holding member 140 is attached to the base body. 116 may be attached.

  Further, for example, as shown in FIG. 3B, the holding member 140 may be attached to the base body 116 by sandwiching an end portion of the base body 116 with a part of the holding member 140. Thereby, the holding member 140 can be easily and reliably attached to the base body 116.

  In this case, for example, by providing the base 116 with a groove or notch that engages with the part of the holding member 140, the holding member 140 can be attached to the base 116 more reliably and stably.

  Further, the holding member 140 may have a shape in which the holding member 140 shown in FIG. 3A is turned upside down, for example, as shown in FIG.

  In addition, as shown in FIG. 3C, when a part of the holding member 140 is attached to the side of the base 116 where the LED 112 is disposed, for example, it is sandwiched between two adjacent LED modules 110. The holding member 140 may be attached to the base body 116. Thereby, for example, the holding member 140 is more securely fixed to the base body 116.

  Further, the direction in which the two linear members 141 are extended may not be left and right, and may be up and down, for example, as shown in FIG.

  In this case, the linear member 141 exists immediately above the light emitting unit 111 of the LED module 110. However, the light shielding amount by the linear member 141 can be minimized by making the linear member 141 as thin as possible.

  Further, the length or shape of each of the plurality of linear members 141 need not be uniform. For example, as shown in (d) and (e) of FIG. The shape may be different.

  Thereby, the natural frequency of each of the two linear members 141 can be made different. As a result, the occurrence of resonance of these two linear members 141 is suppressed. Therefore, for example, when the lamp 100 is transported and attached to a lighting fixture, the base body is prevented from shaking greatly.

  Further, for example, as shown in FIG. 3F, the holding member 140 may include three or more linear members 141.

  The holding member 140 shown in FIG. 3 (f) has three linear members 141, and the linear members 141 are centered on the base body 116 in the upper right direction, the upper left direction, and the lower right direction. Is extended.

  As described above, since the holding member 140 includes three or more linear members 141, for example, the base body 116 is arranged on the lamp 100 more stably.

  In addition, the shape of the linear member 141 in the top view (the shape viewed from the Z-axis direction) does not need to be a straight line, and may be a shape that is entirely or partially curved or bent.

  FIG. 4 is a diagram illustrating an example of the shape of the holding member 140 according to Embodiment 1 in a top view.

  For example, as shown in FIG. 4A, a portion of the holding member 140 that crosses the base 116 may be meandered. Thereby, for example, the rotation of the holding member 140 around the Y axis is restricted, and as a result, the holding member 140 is more stably fixed to the base body 116.

  Further, as shown in FIG. 4B, the entire holding member 140 may be formed to meander in the top view. Thereby, for example, the linear member 141 can be easily contracted in the radial direction, and as a result, the base 116 to which the holding member 140 is attached can be more easily inserted into the outer shell member 120.

  Each of the plurality of holding members 140 shown in FIG. 3 and FIG. 4 described above has a maximum outer diameter larger than the inner diameter of the outer shell member 120 in a state where no external force other than gravity is applied (natural state). It is inserted inside the outer shell member 120 while being elastically deformed.

  That is, each holding member 140 can hold the base body 116 at a predetermined position inside the outer shell member 120 by the restoring force that the holding member 140 has.

  Each of the variation of the shape of the holding member 140 shown in FIGS. 3 and 4 is an example of a shape that can be adopted as the holding member 140. That is, the holding member 140 may have a shape other than the shape shown in FIGS.

  Further, the cross section perpendicular to the longitudinal direction of the linear member 141 need not be circular or elliptical, but may be a polygon such as a rectangle.

  That is, one holding member 140 may be produced by, for example, punching or cutting out from a metal plate, and the linear member 141 may be a long thin linear shape or curved shape as a whole.

  That is, as the linear member 141, an elastic body having a width of about several millimeters in a direction perpendicular to the longitudinal direction (for example, the X-axis direction in FIG. 3) may be employed.

  Further, the holding member 140 may have a different cross-sectional shape and size for each part. In addition, the holding member 140 may be formed by connecting a portion attached to the base body 116, which are separate from each other, and a plurality of linear members 141.

  As described above, since the lamp 100 according to the present embodiment has a simple configuration, it can be easily assembled. As a result, for example, when a plurality of lamps 100 are produced, they can be produced efficiently.

  Further, in the present embodiment, the case where the outer shell member 120 is a glass tube whose inner diameter is uniform over the entire length has been described. However, the outer shell member 120 may be formed so that, for example, the inner diameter of the end opening 121 is smaller than other portions.

  FIG. 5 is a perspective view showing the outer appearance of outer shell member 120 when the inner diameter of end opening 121 is smaller than the other portions in the first embodiment, and FIG. 6 is an outer shell member shown in FIG. 2 is a top view showing a relationship between 120 and a base 150. FIG.

  As shown in FIG. 5, when the inner diameter of the end opening 121 is D1 and the inner diameter of the outer shell member 120 at the position of the holding member 140 is D2, the outer shell member 120 is formed so that D1 <D2. Has been. In this case, the outer diameter of the sealing body 130 is determined according to D1.

  In this case, the strength of the end opening 121 that is a portion that is easily damaged in the outer shell member 120 that is a long glass tube is improved. Therefore, for example, damage to the outer shell member 120 in the process of manufacturing the lamp 100 is prevented.

  Further, as shown in FIG. 6, if the outer diameter of the base 150 is set to a size corresponding to D1, that is, if the outer diameter of the end opening is reduced by at least the thickness of the base 150, the end diameter is reduced. When the base is attached to the part opening, the step between the outer peripheral surface of the outer shell member 120 and the outer peripheral surface of the base 150 can be reduced. Thereby, for example, when storing a plurality of lamps 100 side by side in a certain space, such as a collection container of lamps, the space is effectively used, and compared with a lamp having a step, More lamps 100 can be stored and stored.

  FIG. 7 is a perspective view showing a state in which the base 116 with the holding member 140 attached is inserted into the outer shell member 120 shown in FIG.

  Thus, even when the inner diameter D1 of the end opening 121 is formed to be relatively small, when the lamp 100 is assembled, the holding member 140 attached to the base body 116 is elastic in the direction in which the overall length is reduced. By being deformed, it can pass through the end opening 121 and be inserted into the outer shell member 120.

  Specifically, the external diameter can be made smaller than the internal diameter D1 of the end opening 121 by applying an external force directed from the outside to the inside with respect to the holding member 140. As a result, the holding member 140 has a size that can pass through the end opening 121 and can be inserted into the outer shell member 120.

  Further, the holding member 140 is subsequently restored to a natural state, or, as will be described later, restored to the shape before deformation by heat, and the outer diameter becomes large. It can be held in place.

  In addition, as a raw material of the holding member 140, the metal etc. which have elasticity and are hard to change over time are illustrated.

  For example, at least one linear member 141 of the holding member 140 may be made of a shape memory alloy.

  FIG. 8 is a perspective view showing a part of the manufacturing process of lamp 100 in the case where holding member 140 in Embodiment 1 is made of a shape memory alloy.

  For example, it is assumed that the holding member 140 is manufactured by processing a shape memory alloy. That is, the two linear members 141 are both shape memory alloys.

  In this case, as shown in FIG. 8, the holding member 140 maintains the state in which the two linear members 141 are contracted in the radial direction and the outer diameter of the holding member 140 is smaller than the inner diameter D1 of the end opening. It is inserted inward of the outer shell member 120.

  This prevents friction between the holding member 140 and the inner surface of the outer shell member 120 when the base body 116 is inserted into the outer shell member 120, thereby preventing the occurrence of scratches.

  In particular, as shown in FIG. 8, when the inner diameter D1 of the end opening is formed to be relatively small, the distance between the inner diameter D2 inside the outer shell member 120 and the holding member 140 is relatively large. The certainty of preventing the rubbing is improved.

  Further, since the shape memory alloy returns to its original shape when heated to the temperature of the transformation point or higher, for example, the outer diameter of the holding member 140 increases so as to return to the natural state by the emission heat of the LED module 110, As a result, the substrate is stably held.

  Further, when the sealing body 130 is thermally welded to the end opening 121, the outer diameter of the holding member 140 can be increased by using heat generated during the heat welding.

  In the present embodiment, the LED module 110 includes a plurality of LEDs 112 and a sealing member 113 that seals the plurality of LEDs 112. However, an LED module having a structure different from that of the LED module 110 may be adopted as the light source of the lamp 100.

  FIG. 9 is a perspective view illustrating an appearance of an LED module 110a having a surface mount device (SMD) type LED.

  The LED module 110a shown in FIG. 9 includes a substrate 114 and SMD type LEDs 118 arranged on the substrate 114.

  The SMD type LED 118 includes a resin package having a cavity (concave portion), an LED chip mounted in the cavity, and a phosphor-containing resin sealed in the cavity so as to seal the LED chip. Yes.

  Even when the SMD type LED 118 having such a configuration is adopted as the light source of the lamp 100, the lamp 100 can realize multidirectional light distribution characteristics with a simple configuration.

  Further, the plurality of LED modules 110 may be replaced with one LED module.

  FIG. 10 is a perspective view showing an appearance of an LED module 110b including a single long substrate 114a.

  For example, a light emitting unit 111a composed of a plurality of LEDs 112 and a sealing member 113 on a single substrate 114a having a length close to the entire length of the outer shell member 120, the length corresponding to the length of the substrate 114a. The light emitting portion 111a is formed.

  One or more holding members 140 are attached to the LED module 110b thus obtained, and are inserted into the outer shell member 120, like the base 116 in the present embodiment. That is, in this case, the substrate 114 a also functions as the base body 116.

  In other words, the light emitting function that has been performed by the plurality of LED modules 110 in the present embodiment may be replaced with one or more LED modules having other shapes and sizes. Even in this case, the lamp 100 can achieve multi-directional light distribution characteristics with a simple configuration.

  Further, in the present embodiment, the sealing body 130 and the heat shield 135 are separate bodies. However, the sealing body 130 and the heat shield 135 may be joined.

  FIG. 11A is a top view showing a state in which sealing body 130 and heat shield 135 in Embodiment 1 are joined.

  Thus, when the sealing body 130 and the heat shield 135 are joined, for example, when the sealing body 130 is used for sealing the end of the outer shell member 120 opposite to the sealing end 125. In addition, it is not necessary to separately use means for fixing the heat shield 135 between the end portion and the base body 116.

  In addition, when realizing the sealed body 130 and the heat shield 135 that are joined to each other, the sealed body 130 and the heat shield 135 that are separately manufactured may be joined with an adhesive or the like. For example, the sealing body 130 and the heat shield 135 may be integrally formed.

  For example, the case where the sealing body 130 and the heat shield 135 are integrally formed of glass is assumed. In this case, for example, by applying a paint having high heat resistance and difficult to transmit infrared rays to the heat shield 135, the heat shield 135 can improve the shielding effect against radiant heat.

  Moreover, in this Embodiment, the shape at the time of seeing from the pipe-axis direction (X-axis direction) of the heat shield 135 is a circle. However, the shape of the heat shield 135 may be other shapes.

  For example, as shown in FIG. 11B, the shape of the heat shield 135 viewed from the tube axis direction (X-axis direction) may be a polygon such as an octagon. For example, a shape that can be easily manufactured may be selected from a plurality of candidates for the shape of the heat shield 135.

(Embodiment 2)
Hereinafter, an example in which the holding member 140, the heat shield 135, and the like in Embodiment 1 are applied to a light bulb shaped lamp will be described with reference to FIGS.

  FIG. 12 is an exploded perspective view of the lamp 200 according to the second embodiment, and FIG. 13 is a front view of the lamp 200 according to the second embodiment.

  The lamp 200 is a light bulb shaped lamp. This is a light bulb in which a base 290 is attached to a globe 220 which is an example of a translucent outer shell member. In the globe 220, an LED module 210 on which a plurality of LEDs are mounted is housed.

  The lamp 200 includes two lead wires 252 and a lighting circuit 280, and power for light emission is supplied from the lighting circuit 280 to the LED module 210 via the lead wire 252.

  A holding member 140 is attached to the LED module 210, and the LED module 210 is held at a predetermined position inside the globe 220 by the holding member 140.

  That is, in the present embodiment, the substrate of the LED module 210 plays the same role as the base body 116 in the first embodiment.

  The lamp 200 includes a sealing body 230. Specifically, the sealing body 230 is welded to the end opening 221 of the globe 220 by heat. That is, the peripheral edge of the end opening 221 and the peripheral edge of the flare portion of the sealing body 230 (the shape and size corresponding to the end opening 221) are thermally welded.

  Furthermore, the lamp 200 includes a heat shield 235 between the LED module 210 and a sealed end formed by thermally sealing the sealed body 230 to the end opening 221.

  Hereinafter, each of the basic components of the lamp 200 will be described.

  The globe 220 is a hollow member made of silica glass that is transparent to visible light. Therefore, the user can visually recognize the LED module 210 housed in the globe 220 from the outside of the globe 220. In addition, the lamp 200 can suppress the light generated by the LED module 210 from being lost by the globe 220. Further, the lamp 200 can obtain high heat resistance.

  The LED module 210 has the same configuration as the LED module 110 in Embodiment 1 of the present invention described above.

  In other words, when the lamp 200 is suspended and installed downward from the ceiling, for example, white light is emitted in a wide range including the lower side of the LED module 210 and all sides.

  In the present embodiment, the globe 220 has a shape A (JIS C7710) similar to a general incandescent bulb.

  Note that the shape of the globe 220 is not necessarily A-shaped. For example, the shape of the globe 220 may be a G shape or an E shape. Further, the globe 220 need not be made of silica glass. For example, the globe 220 may be a resin member such as acrylic.

  Moreover, the lower end of the sealing body 230 is formed in a flare shape so as to coincide with the shape of the end opening 221 as shown in FIG. And the lower end of the sealing body 230 formed in the flare shape is welded by heat so as to close the end opening 221 of the globe 220.

  Moreover, the sealing body 230 is comprised from soft glass transparent with respect to visible light. Thereby, the lamp 200 can suppress the light generated in the LED module 210 from being lost by the sealing body 230. In addition, the lamp 200 can prevent a shadow from being formed by the sealing body 230. Moreover, since the sealing body 230 shines by the light emitted from the LED module 210, the lamp 200 can also exhibit a visually excellent aesthetic appearance.

  In addition, a part of each of the two lead wires 252 is sealed in the sealing body 230. As a result, it is possible to supply power from outside the globe 220 to the LED module 210 in the globe 220 in a state in which the airtightness in the globe 220 is maintained.

  Accordingly, the lamp 200 can prevent intrusion of water or water vapor into the globe 220 as in the lamp 100 in the first embodiment, and as a result, deterioration of the LED module 210 is suppressed. .

  Further, for example, since helium can be enclosed in the globe 220, the heat radiation efficiency of the heat generated in the LED module 210 is improved without using a metal heat sink or the like.

  Further, as shown in FIG. 12, the heat shield 235 may be disposed between the upper end of the sealing body 230 and the LED module 210. As shown by the dotted line in FIG. You may arrange | position in the middle of an up-down direction.

  For example, by arranging the heat shield 235 at a position closer to the generation source of the radiant heat that the heat shield 235 should block, the radiation heat blocking efficiency by the heat shield 235 can be improved.

  Note that the number of lead wires 252 is not necessarily two. For example, when the lamp 200 includes a plurality of LED modules 210 in the globe 220, the lamp 200 may include two lead wires 252 for each LED module 210.

  Further, the lead wire 252 may also have a role of holding the LED module 210. Thereby, the retention strength with respect to the LED module 210 in the lamp 200 can be improved.

  Moreover, there is no limitation in particular about the kind of LED module which the lamp 200 employ | adopts as a light source, For example, the LED module 110a which has SMD type LED118 shown in FIG. 9 may be employ | adopted as a light source of the lamp 200.

  Further, the shape of the holding member 140 included in the lamp 200 may be other than the shape shown in FIGS. 12 and 13. For example, the lamp 200 may be provided with any of the holding members 140 having various shapes shown in FIG.

  The lamp of the present invention has been described based on the first and second embodiments. However, the present invention is not limited to these descriptions. As long as it does not deviate from the gist of the present invention, various forms conceived by those skilled in the art are applied to any of the first and second embodiments, or a form constructed by combining the plurality of constituent elements described above, It is included within the scope of the present invention.

  For example, in the LED modules 110 and 210, a blue LED chip is employed as a light source, and yellow phosphor particles are employed as a wavelength conversion material from blue light to white light. However, the combination of the LED module 210 and the phosphor particles is not limited to this combination.

  For example, the LED modules 110 and 210 emit white light by a blue LED chip that emits blue light, and green phosphor particles that are excited by blue light to emit green light and red phosphor particles that emit red light. May be.

  Further, for example, the LED modules 110 and 210 include an ultraviolet LED chip that emits ultraviolet light having a shorter wavelength than blue light, and a blue phosphor that is mainly excited by ultraviolet light and emits blue light, red light, and green light. White light may be emitted by the particles, green phosphor particles and red phosphor particles.

  In the first embodiment, as shown in FIG. 1, a plurality of LED modules 110 are arranged in a row on a base 115. However, the arrangement of the plurality of LED modules 110 is not limited to this, and the LED modules 110 may be arranged in two or more rows or zigzag.

  In the first embodiment, the LED module 110 is disposed only on one of the two main surfaces perpendicular to the thickness direction of the base 115. However, the LED module 110 may be disposed on both of the two main surfaces.

  This is the same as in the second embodiment. For example, the lamp 200 has a wider range of light distribution characteristics by adopting a laminate of the back surfaces of the two LED modules 210 as the light source of the lamp 200. It can also be obtained.

  Moreover, LED was illustrated as a semiconductor light-emitting device with which LED module 110 and 210 in Embodiment 1 and 2 is provided. However, the semiconductor light emitting elements included in the LED modules 110 and 210 may be a semiconductor laser or an organic EL (Electro Luminescence).

  Moreover, the sealing bodies 130 and 230 do not necessarily need to be transparent to visible light, and need not be made of soft glass.

  Further, the conductive member such as the lead wire 252 is preferably a metal wire containing copper having high thermal conductivity. Thereby, the heat generated in the LED module 110 or 210 can be positively released to the base 150 or 290 via the conductive member.

  In each of the above embodiments, the outer shell members 120 and 220 are made of glass, but in this case, the production cost can be reduced because a conventional fluorescent lamp or incandescent lamp facility can be used as the production facility. be able to.

  Further, in the lamps 100 and 200, the heat shields 135 and 235 are not essential. For example, assume that the lamp 100 has a relatively long distance from the sealing end 125 to the base 116. In this case, since the base body 116 is not easily affected by the radiant heat generated when the sealing end portion 125 is formed, the lamp 100 may not include the heat shield 135.

  Moreover, in each said embodiment, although the outer shell member 220 was obstruct | occluded with the sealing body 230, it does not need to be obstruct | occluded.

  Further, the outer shell members 120 and 220 are sealed using the sealing bodies 130 and 230, but without using another member such as the sealing bodies 130 and 230, the end openings 121 of the outer shell members 120 and 220, 221 may be crushed and sealed together with the lead wire with the lead wire extended to the outside. This is more effective as the outer diameter of the end opening of the outer shell member is smaller.

  The present invention can be widely used as a lamp including a semiconductor light emitting element such as an LED.

100, 200 Lamp 110, 110a, 110b, 210 LED module 111, 111a Light emitting part 112 LED
113 Sealing member 114, 114a Substrate 115 Base 116 Substrate 118 SMD type LED
120 Outer shell member 121, 221 End opening 125 Sealed end portion 130, 230 Sealed body 132 First hole 135, 235 Heat shield 137 Second hole 140 Holding member 141 Linear member 150, 290 Base 151 Base pin 152 , 153 Conductive member 160 Mounting member 220 Globe 252 Lead wire 280 Lighting circuit

Claims (9)

A substrate on which a semiconductor light emitting element is disposed;
An outer shell member in which the base body is disposed inward and has translucency;
A holding member attached to the base body, wherein the holding member has a plurality of linear members, and each of the plurality of linear members comes into contact with an inner surface of the outer shell member, whereby the base body is attached to the outer shell member. A holding member that holds the inner predetermined position,
Each of the plurality of linear members has elasticity, and extends from the base toward the inner surface of the outer shell member in different directions. The lamp according to claim 1, wherein each of the two linear members included in the plurality of linear members has a different length or shape. The lamp according to claim 1 or 2, wherein at least one of the plurality of linear members is made of a shape memory alloy. The lamp according to any one of claims 1 to 3, wherein the holding member is attached to the holding member by a part of the holding member sandwiching an end of the base. The lamp according to claim 4, wherein the base has a groove or a notch that engages with the part of the holding member. An end opening is formed in the outer shell member,
The lamp according to any one of claims 1 to 5, wherein an inner diameter of the end opening is formed smaller than an inner diameter of the outer shell member at a position where the holding member is disposed. The lamp according to any one of claims 1 to 6, wherein the outer shell member has a sealed end formed by sealing an end opening. Furthermore, a sealing body for sealing the end opening is provided,
The lamp according to claim 7, wherein the sealing end portion is formed by sealing the end opening with the sealing body. The lamp according to any one of claims 1 to 8, wherein the base body has translucency to transmit light from the semiconductor light emitting element.

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