LED light source device and biochemical analysis device
AssigneeHitachi High-Tech Corporation
InventorsMami Fukumura, Tetsuji Kawahara, Takuya Takahashi, Hiroshi Horikawa
Life of this patent
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Abstract
A biochemical analysis device that emits light used to measure absorbance of a sample includes an LED that emits the light, a substrate on which the LED is mounted, a spacer that supports the substrate, a holder that accommodates the LED, the substrate, and the spacer, and a flow path formed by circulating constant temperature water through the holder. The spacer is formed of a material having a heat conductivity higher than that of the holder. The spacer is in contact with the holder at a contact portion. A convex portion of the spacer is covered with a concave portion of the holder through an air layer.
Claims16
A biochemical analysis device that emits light used to measure absorbance of a sample, the biochemical analysis device comprising:
- an LED that emits the light;
- a substrate on which the LED is mounted;
- a spacer that supports the substrate;
- a holder that accommodates the LED, the substrate, and the spacer;
- and
- a flow path formed by circulating constant temperature water through the holder, wherein
- the spacer is formed of a material having a heat conductivity higher than that of the holder,
- the spacer is in contact with the holder at a contact portion, a convex portion of the spacer is covered with a concave portion of the holder through an air layer, and
- when a thermal resistance from an LED installation portion of the spacer to a contact portion of the spacer with the outside air is Rsp,
- a relationship of 2 (K/W)≤Rsp≤40 (K/W) is satisfied.
A biochemical analysis device that emits light used to measure absorbance of a sample, the biochemical analysis device comprising:
- an LED that emits the light;
- a substrate on which the LED is mounted;
- a spacer that supports the substrate;
- a holder that accommodates the LED, the substrate, and the spacer;
- and
- a flow path formed by circulating constant temperature water through the holder, wherein
- the spacer is formed of a material having a heat conductivity higher than that of the holder,
- the spacer is in contact with the holder at a contact portion, a convex portion of the spacer is covered with a concave portion of the holder through an air layer, and
- a film is formed at a contact portion of the spacer with outside air.
An LED light source device that emits light used to measure absorbance of a sample, the LED light source device comprising:
- an LED that emits the light;
- a substrate on which the LED is mounted;
- a spacer that supports the substrate;
- and
- a holder that accommodates the LED, the substrate, and the spacer, wherein
- the spacer is formed of a material having a heat conductivity higher than that of the holder,
- the spacer is in contact with the holder at a contact portion,
- a convex portion of the spacer is covered with a concave portion of the holder through an air layer, and
- when a thermal resistance from an LED installation portion of the spacer to a contact portion of the spacer with the outside air is Rsp,
- a relationship of 2 (K/W)≤Rsp≤40 (K/W) is satisfied.
An LED light source device that emits light used to measure absorbance of a sample, the LED light source device comprising:
- an LED that emits the light;
- a substrate on which the LED is mounted;
- a spacer that supports the substrate;
- and
- a holder that accommodates the LED, the substrate, and the spacer, wherein
- the spacer is formed of a material having a heat conductivity higher than that of the holder,
- the spacer is in contact with the holder at a contact portion,
- a convex portion of the spacer is covered with a concave portion of the holder through an air layer, and
- a film is formed at a contact portion of the spacer with outside air.
Dependencies are inferred from the claim text.